Add HCL syntax highlighting for everything but providers
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@ -14,7 +14,7 @@ section. After configuring a backend, it has to be
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Below, we show a complete example configuring the "consul" backend:
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```
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```hcl
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terraform {
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backend "consul" {
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address = "demo.consul.io"
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@ -78,7 +78,7 @@ basic encryption on disk so that values are at least not plaintext.
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When using partial configuration, Terraform requires at a minimum that
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an empty backend configuration is in the Terraform files. For example:
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```
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```hcl
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terraform {
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backend "consul" {}
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}
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@ -21,7 +21,7 @@ It will likely end in `/artifactory`.
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## Example Configuration
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```
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```hcl
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terraform {
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backend "artifactory" {
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username = "SheldonCooper"
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@ -35,7 +35,7 @@ terraform {
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## Example Referencing
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "artifactory"
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config {
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@ -19,7 +19,7 @@ and generate new token in the
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## Example Configuration
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```
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```hcl
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terraform {
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backend "atlas" {
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name = "bigbang/example"
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@ -33,7 +33,7 @@ Note that for the access token we recommend using a
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## Example Referencing
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "atlas"
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config {
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@ -30,7 +30,6 @@ Note that for the access credentials we recommend using a
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## Example Referencing
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```hcl
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# setup remote state data source
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data "terraform_remote_state" "foo" {
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backend = "azure"
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config {
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@ -16,7 +16,7 @@ This backend supports [state locking](/docs/state/locking.html).
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## Example Configuration
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```
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```hcl
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terraform {
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backend "consul" {
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address = "demo.consul.io"
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@ -30,7 +30,7 @@ Note that for the access credentials we recommend using a
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## Example Referencing
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "consul"
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config {
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@ -14,7 +14,7 @@ Stores the state in [etcd](https://coreos.com/etcd/) at a given path.
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## Example Configuration
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```
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```hcl
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terraform {
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backend "etcd" {
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path = "path/to/terraform.tfstate"
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@ -25,7 +25,7 @@ terraform {
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## Example Referencing
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "etcd"
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config {
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@ -14,7 +14,7 @@ Stores the state as a given key in a given bucket on [Google Cloud Storage](http
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## Example Configuration
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```
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```hcl
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terraform {
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backend "gcs" {
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bucket = "tf-state-prod"
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@ -27,7 +27,6 @@ terraform {
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## Example Referencing
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```hcl
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# setup remote state data source
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data "terraform_remote_state" "foo" {
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backend = "gcs"
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config {
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@ -37,7 +36,6 @@ data "terraform_remote_state" "foo" {
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}
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}
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# read value from data source
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resource "template_file" "bar" {
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template = "${greeting}"
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@ -16,7 +16,7 @@ State will be fetched via GET, updated via POST, and purged with DELETE.
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## Example Usage
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```
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```hcl
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terraform {
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backend "http" {
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address = "http://myrest.api.com"
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@ -26,7 +26,7 @@ terraform {
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## Example Referencing
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "http"
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config {
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@ -15,7 +15,7 @@ state using system APIs, and performs operations locally.
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## Example Configuration
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```
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```hcl
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terraform {
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backend "local" {
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path = "relative/path/to/terraform.tfstate"
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@ -25,7 +25,7 @@ terraform {
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## Example Reference
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "local"
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@ -14,7 +14,7 @@ Stores the state as an artifact in [Manta](https://www.joyent.com/manta).
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## Example Configuration
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```
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```hcl
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terraform {
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backend "manta" {
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path = "random/path"
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@ -28,7 +28,7 @@ Note that for the access credentials we recommend using a
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## Example Referencing
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "manta"
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config {
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@ -21,7 +21,7 @@ on the S3 bucket to allow for state recovery in the case of accidental deletions
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## Example Configuration
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```
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```hcl
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terraform {
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backend "s3" {
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bucket = "mybucket"
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@ -43,7 +43,7 @@ To make use of the S3 remote state we can use the
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[`terraform_remote_state` data
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source](/docs/providers/terraform/d/remote_state.html).
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "s3"
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config {
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@ -14,7 +14,7 @@ Stores the state as an artifact in [Swift](http://docs.openstack.org/developer/s
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## Example Configuration
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```
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```hcl
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terraform {
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backend "swift" {
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path = "terraform-state"
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## Example Referencing
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```
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```hcl
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data "terraform_remote_state" "foo" {
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backend = "swift"
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config {
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@ -45,7 +45,7 @@ final command is outputted unless an error occurs earlier.
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An example is shown below:
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```
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```shell
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$ echo "1 + 5" | terraform console
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6
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```
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@ -46,10 +46,9 @@ The output of `terraform graph` is in the DOT format, which can
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easily be converted to an image by making use of `dot` provided
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by GraphViz:
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```
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```shell
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$ terraform graph | dot -Tpng > graph.png
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```
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Here is an example graph output:
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![Graph Example](graph-example.png)
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@ -89,7 +89,7 @@ As a working example, if you're importing AWS resources and you have a
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configuration file with the contents below, then Terraform will configure
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the AWS provider with this file.
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```
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```hcl
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variable "access_key" {}
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variable "secret_key" {}
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@ -108,7 +108,7 @@ may not be valid.
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This example will import an AWS instance:
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```
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```shell
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$ terraform import aws_instance.foo i-abcd1234
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```
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The example below will import an AWS instance into a module:
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```
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```shell
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$ terraform import module.foo.aws_instance.bar i-abcd1234
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```
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@ -87,7 +87,7 @@ If the value contains an equal sign (`=`), it is parsed as a `key=value` pair.
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The format of this flag is identical to the `-var` flag for plan, apply,
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etc. but applies to configuration keys for backends. For example:
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```
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```shell
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$ terraform init \
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-backend-config 'address=demo.consul.io' \
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-backend-config 'path=newpath'
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@ -36,7 +36,7 @@ The command-line flags are all optional. The list of available flags are:
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These examples assume the following Terraform output snippet.
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```ruby
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```hcl
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output "lb_address" {
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value = "${aws_alb.web.public_dns}"
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}
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@ -48,20 +48,20 @@ output "instance_ips" {
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To list all outputs:
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```text
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```shell
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$ terraform output
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```
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To query for the DNS address of the load balancer:
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```text
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```shell
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$ terraform output lb_address
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my-app-alb-1657023003.us-east-1.elb.amazonaws.com
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```
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To query for all instance IP addresses:
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```text
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```shell
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$ terraform output instance_ips
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test = [
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54.43.114.12,
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@ -74,6 +74,6 @@ To query for a particular value in a list, use `-json` and a JSON
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command-line parser such as [jq](https://stedolan.github.io/jq/).
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For example, to query for the first instance's IP address:
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```text
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```shell
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$ terraform output -json instance_ips | jq '.value[0]'
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```
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@ -105,9 +105,8 @@ The variable values can be updated using the `-overwrite` flag or via
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the [Atlas website](https://atlas.hashicorp.com). An example of updating
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just a single variable `foo` is shown below:
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```
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```shell
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$ terraform push -var 'foo=bar' -overwrite foo
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...
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```
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Both the `-var` and `-overwrite` flag are required. The `-var` flag
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@ -26,7 +26,7 @@ already.
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Atlas configuration looks like the following:
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```
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```hcl
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atlas {
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name = "mitchellh/production-example"
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}
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The full syntax is:
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```
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```text
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atlas {
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name = VALUE
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}
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@ -36,17 +36,19 @@ already.
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A data source configuration looks like the following:
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```
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// Find the latest available AMI that is tagged with Component = web
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```hcl
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# Find the latest available AMI that is tagged with Component = web
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data "aws_ami" "web" {
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filter {
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name = "state"
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values = ["available"]
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}
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filter {
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name = "tag:Component"
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values = ["web"]
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}
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most_recent = true
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}
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```
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interpolated into other resources using variables of the form
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`data.TYPE.NAME.ATTR`. For example:
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```
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```hcl
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resource "aws_instance" "web" {
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ami = "${data.aws_ami.web.id}"
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instance_type = "t1.micro"
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`provider` meta-parameter can be used where a configuration has
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multiple aliased instances of the same provider:
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```
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```hcl
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data "aws_ami" "web" {
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provider = "aws.west"
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// etc...
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# ...
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}
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```
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See the "Multiple Provider Instances" documentation for resources
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@ -12,13 +12,13 @@ description: |-
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If set to any value, enables detailed logs to appear on stderr which is useful for debugging. For example:
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```
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```shell
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export TF_LOG=TRACE
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```
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To disable, either unset it or set it to empty. When unset, logging will default to stderr. For example:
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```
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```shell
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export TF_LOG=
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```
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This specifies where the log should persist its output to. Note that even when `TF_LOG_PATH` is set, `TF_LOG` must be set in order for any logging to be enabled. For example, to always write the log to the directory you're currently running terraform from:
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```
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```shell
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export TF_LOG_PATH=./terraform.log
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```
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If set to "false" or "0", causes terraform commands to behave as if the `-input=false` flag was specified. This is used when you want to disable prompts for variables that haven't had their values specified. For example:
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```
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```shell
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export TF_INPUT=0
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```
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When given a value, causes terraform commands to behave as if the `-module-depth=VALUE` flag was specified. By setting this to 0, for example, you enable commands such as [plan](/docs/commands/plan.html) and [graph](/docs/commands/graph.html) to display more compressed information.
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```
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```shell
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export TF_MODULE_DEPTH=0
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```
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Environment variables can be used to set variables. The environment variables must be in the format `TF_VAR_name` and this will be checked last for a value. For example:
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```
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```shell
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export TF_VAR_region=us-west-1
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export TF_VAR_ami=ami-049d8641
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export TF_VAR_alist='[1,2,3]'
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@ -95,7 +95,7 @@ requiring remote network connectivity. The unit tests make an attempt to
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automatically detect when connectivity is unavailable and skip the relevant
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tests, but by setting this variable you can force these tests to be skipped.
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```
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```shell
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export TF_SKIP_REMOTE_TESTS=1
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make test
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```
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@ -74,8 +74,6 @@ interpolate the current index in a multi-count resource. For more
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information on `count`, see the [resource configuration
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page](/docs/configuration/resources.html).
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<a id="path-variables"></a>
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#### Path information
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The syntax is `path.TYPE`. TYPE can be `cwd`, `module`, or `root`.
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@ -90,12 +88,11 @@ The syntax is `terraform.FIELD`. This variable type contains metadata about
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the currently executing Terraform run. FIELD can currently only be `env` to
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reference the currently active [state environment](/docs/state/environments.html).
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<a id="conditionals"></a>
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## Conditionals
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Interpolations may contain conditionals to branch on the final value.
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```
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```hcl
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resource "aws_instance" "web" {
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subnet = "${var.env == "production" ? var.prod_subnet : var.dev_subnet}"
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}
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@ -103,7 +100,9 @@ resource "aws_instance" "web" {
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The conditional syntax is the well-known ternary operation:
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CONDITION ? TRUEVAL : FALSEVAL
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```text
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CONDITION ? TRUEVAL : FALSEVAL
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```
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The condition can be any valid interpolation syntax, such as variable
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access, a function call, or even another conditional. The true and false
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@ -119,7 +118,7 @@ The support operators are:
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A common use case for conditionals is to enable/disable a resource by
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conditionally setting the count:
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```
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```hcl
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resource "aws_instance" "vpn" {
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count = "${var.something ? 1 : 0}"
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}
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|
@ -129,7 +128,6 @@ In the example above, the "vpn" resource will only be included if
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"var.something" evaluates to true. Otherwise, the VPN resource will
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not be created at all.
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<a id="functions"></a>
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## Built-in Functions
|
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Terraform ships with built-in functions. Functions are called with the
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|
@ -347,7 +345,6 @@ The supported built-in functions are:
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of the key used to encrypt their initial password, you might use:
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`zipmap(aws_iam_user.users.*.name, aws_iam_user_login_profile.users.*.key_fingerprint)`.
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<a id="templates"></a>
|
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## Templates
|
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|
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Long strings can be managed using templates.
|
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|
@ -358,7 +355,7 @@ computed `rendered` attribute containing the result.
|
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|
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A template data source looks like:
|
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|
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```
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```hcl
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data "template_file" "example" {
|
||||
template = "$${hello} $${world}!"
|
||||
vars {
|
||||
|
@ -383,7 +380,7 @@ details on template usage, please see the
|
|||
Here is an example that combines the capabilities of templates with the interpolation
|
||||
from `count` to give us a parameterized template, unique to each resource instance:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "count" {
|
||||
default = 2
|
||||
}
|
||||
|
@ -396,41 +393,42 @@ variable "hostnames" {
|
|||
}
|
||||
|
||||
data "template_file" "web_init" {
|
||||
// here we expand multiple template_files - the same number as we have instances
|
||||
# Expand multiple template files - the same number as we have instances
|
||||
count = "${var.count}"
|
||||
template = "${file("templates/web_init.tpl")}"
|
||||
vars {
|
||||
// that gives us access to use count.index to do the lookup
|
||||
# that gives us access to use count.index to do the lookup
|
||||
hostname = "${lookup(var.hostnames, count.index)}"
|
||||
}
|
||||
}
|
||||
|
||||
resource "aws_instance" "web" {
|
||||
// ...
|
||||
# ...
|
||||
count = "${var.count}"
|
||||
// here we link each web instance to the proper template_file
|
||||
|
||||
# Link each web instance to the proper template_file
|
||||
user_data = "${element(data.template_file.web_init.*.rendered, count.index)}"
|
||||
}
|
||||
```
|
||||
|
||||
With this, we will build a list of `template_file.web_init` data sources which we can
|
||||
use in combination with our list of `aws_instance.web` resources.
|
||||
With this, we will build a list of `template_file.web_init` data sources which
|
||||
we can use in combination with our list of `aws_instance.web` resources.
|
||||
|
||||
<a id="math"></a>
|
||||
## Math
|
||||
|
||||
Simple math can be performed in interpolations:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "count" {
|
||||
default = 2
|
||||
}
|
||||
|
||||
resource "aws_instance" "web" {
|
||||
// ...
|
||||
# ...
|
||||
|
||||
count = "${var.count}"
|
||||
|
||||
// tag the instance with a counter starting at 1, ie. web-001
|
||||
# Tag the instance with a counter starting at 1, ie. web-001
|
||||
tags {
|
||||
Name = "${format("web-%03d", count.index + 1)}"
|
||||
}
|
||||
|
@ -446,7 +444,7 @@ Operator precedences is the standard mathematical order of operations:
|
|||
*Multiply* (`*`), *Divide* (`/`), and *Modulo* (`%`) have precedence over
|
||||
*Add* (`+`) and *Subtract* (`-`). Parenthesis can be used to force ordering.
|
||||
|
||||
```
|
||||
```text
|
||||
"${2 * 4 + 3 * 3}" # computes to 17
|
||||
"${3 * 3 + 2 * 4}" # computes to 17
|
||||
"${2 * (4 + 3) * 3}" # computes to 42
|
||||
|
|
|
@ -21,7 +21,7 @@ already.
|
|||
|
||||
Module configuration looks like the following:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "github.com/hashicorp/consul/terraform/aws"
|
||||
servers = 5
|
||||
|
@ -54,7 +54,7 @@ lists and maps.
|
|||
|
||||
The full syntax is:
|
||||
|
||||
```
|
||||
```text
|
||||
module NAME {
|
||||
source = SOURCE_URL
|
||||
|
||||
|
@ -64,6 +64,6 @@ module NAME {
|
|||
|
||||
where `CONFIG` is:
|
||||
|
||||
```
|
||||
```text
|
||||
KEY = VALUE
|
||||
```
|
||||
|
|
|
@ -27,7 +27,7 @@ already.
|
|||
|
||||
A simple output configuration looks like the following:
|
||||
|
||||
```ruby
|
||||
```hcl
|
||||
output "address" {
|
||||
value = "${aws_instance.db.public_dns}"
|
||||
}
|
||||
|
@ -38,7 +38,7 @@ DNS address of the Terraform-defined AWS instance named "db". It
|
|||
is possible to export complex data types like maps and strings as
|
||||
well:
|
||||
|
||||
```ruby
|
||||
```hcl
|
||||
output "addresses" {
|
||||
value = ["${aws_instance.web.*.public_dns}"]
|
||||
}
|
||||
|
@ -54,22 +54,21 @@ the output variable.
|
|||
Within the block (the `{ }`) is configuration for the output.
|
||||
These are the parameters that can be set:
|
||||
|
||||
* `value` (required) - The value of the output. This can be a string, list,
|
||||
or map. This usually includes an interpolation since outputs that are
|
||||
static aren't usually useful.
|
||||
- `value` (required) - The value of the output. This can be a string, list, or
|
||||
map. This usually includes an interpolation since outputs that are static
|
||||
aren't usually useful.
|
||||
|
||||
* `depends_on` (list of strings) - Explicit dependencies that this
|
||||
output has. These dependencies will be created before this
|
||||
output value is processed. The dependencies are in the format of
|
||||
`TYPE.NAME`, for example `aws_instance.web`.
|
||||
- `depends_on` (list of strings) - Explicit dependencies that this output has.
|
||||
These dependencies will be created before this output value is processed. The
|
||||
dependencies are in the format of `TYPE.NAME`, for example `aws_instance.web`.
|
||||
|
||||
* `sensitive` (optional, boolean) - See below.
|
||||
- `sensitive` (optional, boolean) - See below.
|
||||
|
||||
## Syntax
|
||||
|
||||
The full syntax is:
|
||||
|
||||
```ruby
|
||||
```text
|
||||
output NAME {
|
||||
value = VALUE
|
||||
}
|
||||
|
@ -80,7 +79,7 @@ output NAME {
|
|||
Outputs can be marked as containing sensitive material by setting the
|
||||
`sensitive` attribute to `true`, like this:
|
||||
|
||||
```ruby
|
||||
```hcl
|
||||
output "sensitive" {
|
||||
sensitive = true
|
||||
value = VALUE
|
||||
|
@ -93,8 +92,9 @@ displayed in place of their value.
|
|||
|
||||
### Limitations of Sensitive Outputs
|
||||
|
||||
* The values of sensitive outputs are still stored in the Terraform
|
||||
state, and available using the `terraform output` command, so cannot be
|
||||
relied on as a sole means of protecting values.
|
||||
* Sensitivity is not tracked internally, so if the output is interpolated in
|
||||
- The values of sensitive outputs are still stored in the Terraform state, and
|
||||
available using the `terraform output` command, so cannot be relied on as a
|
||||
sole means of protecting values.
|
||||
|
||||
- Sensitivity is not tracked internally, so if the output is interpolated in
|
||||
another module into a resource, the value will be displayed.
|
||||
|
|
|
@ -35,7 +35,7 @@ Terraform configurations.
|
|||
|
||||
If you have a Terraform configuration `example.tf` with the contents:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
ami = "ami-408c7f28"
|
||||
}
|
||||
|
@ -43,7 +43,7 @@ resource "aws_instance" "web" {
|
|||
|
||||
And you created a file `override.tf` with the contents:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
ami = "foo"
|
||||
}
|
||||
|
|
|
@ -29,7 +29,7 @@ already.
|
|||
|
||||
A provider configuration looks like the following:
|
||||
|
||||
```
|
||||
```hcl
|
||||
provider "aws" {
|
||||
access_key = "foo"
|
||||
secret_key = "bar"
|
||||
|
@ -45,13 +45,11 @@ Multiple provider blocks can be used to configure multiple providers.
|
|||
Terraform matches providers to resources by matching two criteria.
|
||||
Both criteria must be matched for a provider to manage a resource:
|
||||
|
||||
* They must share a common prefix. Longest matching prefixes are
|
||||
tried first. For example, `aws_instance` would choose the
|
||||
`aws` provider.
|
||||
- They must share a common prefix. Longest matching prefixes are tried first.
|
||||
For example, `aws_instance` would choose the `aws` provider.
|
||||
|
||||
* The provider must report that it supports the given resource
|
||||
type. Providers internally tell Terraform the list of resources
|
||||
they support.
|
||||
- The provider must report that it supports the given resource type. Providers
|
||||
internally tell Terraform the list of resources they support.
|
||||
|
||||
Within the block (the `{ }`) is configuration for the resource.
|
||||
The configuration is dependent on the type, and is documented
|
||||
|
@ -68,7 +66,7 @@ To define multiple provider instances, repeat the provider configuration
|
|||
multiple times, but set the `alias` field and name the provider. For
|
||||
example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
# The default provider
|
||||
provider "aws" {
|
||||
# ...
|
||||
|
@ -77,7 +75,6 @@ provider "aws" {
|
|||
# West coast region
|
||||
provider "aws" {
|
||||
alias = "west"
|
||||
|
||||
region = "us-west-2"
|
||||
}
|
||||
```
|
||||
|
@ -85,7 +82,7 @@ provider "aws" {
|
|||
After naming a provider, you reference it in resources with the `provider`
|
||||
field:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "foo" {
|
||||
provider = "aws.west"
|
||||
|
||||
|
@ -101,7 +98,7 @@ is used (the provider configuration with no `alias` set). The value of the
|
|||
|
||||
The full syntax is:
|
||||
|
||||
```
|
||||
```text
|
||||
provider NAME {
|
||||
CONFIG ...
|
||||
[alias = ALIAS]
|
||||
|
@ -110,7 +107,7 @@ provider NAME {
|
|||
|
||||
where `CONFIG` is:
|
||||
|
||||
```
|
||||
```text
|
||||
KEY = VALUE
|
||||
|
||||
KEY {
|
||||
|
|
|
@ -23,7 +23,7 @@ already.
|
|||
|
||||
A resource configuration looks like the following:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
ami = "ami-408c7f28"
|
||||
instance_type = "t1.micro"
|
||||
|
@ -41,64 +41,56 @@ configuration is dependent on the type, and is documented for each
|
|||
resource type in the
|
||||
[providers section](/docs/providers/index.html).
|
||||
|
||||
<a id="meta-parameters"></a>
|
||||
### Meta-parameters
|
||||
|
||||
There are **meta-parameters** available to all resources:
|
||||
|
||||
* `count` (int) - The number of identical resources to create.
|
||||
This doesn't apply to all resources. For details on using variables in
|
||||
conjunction with count, see [Using Variables with
|
||||
`count`](#using-variables-with-count) below.
|
||||
- `count` (int) - The number of identical resources to create. This doesn't
|
||||
apply to all resources. For details on using variables in conjunction with
|
||||
count, see [Using Variables with `count`](#using-variables-with-count) below.
|
||||
|
||||
~> **NOTE:** Modules don't currently support the `count` parameter.
|
||||
-> Modules don't currently support the `count` parameter.
|
||||
|
||||
* `depends_on` (list of strings) - Explicit dependencies that this
|
||||
resource has. These dependencies will be created before this
|
||||
resource. For syntax and other details, see the section below on
|
||||
[explicit dependencies](#explicit-dependencies).
|
||||
- `depends_on` (list of strings) - Explicit dependencies that this resource has.
|
||||
These dependencies will be created before this resource. For syntax and other
|
||||
details, see the section below on [explicit
|
||||
dependencies](#explicit-dependencies).
|
||||
|
||||
* `provider` (string) - The name of a specific provider to use for
|
||||
this resource. The name is in the format of `TYPE.ALIAS`, for example,
|
||||
`aws.west`. Where `west` is set using the `alias` attribute in a
|
||||
provider. See [multiple provider instances](#multi-provider-instances).
|
||||
- `provider` (string) - The name of a specific provider to use for this
|
||||
resource. The name is in the format of `TYPE.ALIAS`, for example, `aws.west`.
|
||||
Where `west` is set using the `alias` attribute in a provider. See [multiple
|
||||
provider instances](#multi-provider-instances).
|
||||
|
||||
* `lifecycle` (configuration block) - Customizes the lifecycle
|
||||
behavior of the resource. The specific options are documented
|
||||
below.
|
||||
- `lifecycle` (configuration block) - Customizes the lifecycle behavior of the
|
||||
resource. The specific options are documented below.
|
||||
|
||||
The `lifecycle` block allows the following keys to be set:
|
||||
The `lifecycle` block allows the following keys to be set:
|
||||
|
||||
* `create_before_destroy` (bool) - This flag is used to ensure
|
||||
the replacement of a resource is created before the original
|
||||
instance is destroyed. As an example, this can be used to
|
||||
create an new DNS record before removing an old record.
|
||||
- `create_before_destroy` (bool) - This flag is used to ensure the replacement
|
||||
of a resource is created before the original instance is destroyed. As an
|
||||
example, this can be used to create an new DNS record before removing an old
|
||||
record.
|
||||
|
||||
* `prevent_destroy` (bool) - This flag provides extra protection against the
|
||||
destruction of a given resource. When this is set to `true`, any plan
|
||||
that includes a destroy of this resource will return an error message.
|
||||
~> Resources that utilize the `create_before_destroy` key can only
|
||||
depend on other resources that also include `create_before_destroy`.
|
||||
Referencing a resource that does not include `create_before_destroy`
|
||||
will result in a dependency graph cycle.
|
||||
|
||||
<a id="ignore-changes"></a>
|
||||
- `prevent_destroy` (bool) - This flag provides extra protection against the
|
||||
destruction of a given resource. When this is set to `true`, any plan that
|
||||
includes a destroy of this resource will return an error message.
|
||||
|
||||
* `ignore_changes` (list of strings) - Customizes how diffs are evaluated for
|
||||
resources, allowing individual attributes to be ignored through changes.
|
||||
As an example, this can be used to ignore dynamic changes to the
|
||||
resource from external resources. Other meta-parameters cannot be ignored.
|
||||
- `ignore_changes` (list of strings) - Customizes how diffs are evaluated for
|
||||
resources, allowing individual attributes to be ignored through changes. As
|
||||
an example, this can be used to ignore dynamic changes to the resource from
|
||||
external resources. Other meta-parameters cannot be ignored.
|
||||
|
||||
~> **NOTE on create\_before\_destroy and dependencies:** Resources that utilize
|
||||
the `create_before_destroy` key can only depend on other resources that also
|
||||
include `create_before_destroy`. Referencing a resource that does not include
|
||||
`create_before_destroy` will result in a dependency graph cycle.
|
||||
|
||||
~> **NOTE on ignore\_changes:** Ignored attribute names can be matched by their
|
||||
name, not state ID. For example, if an `aws_route_table` has two routes defined
|
||||
and the `ignore_changes` list contains "route", both routes will be ignored.
|
||||
Additionally you can also use a single entry with a wildcard (e.g. `"*"`)
|
||||
which will match all attribute names. Using a partial string together with a
|
||||
wildcard (e.g. `"rout*"`) is **not** supported.
|
||||
|
||||
|
||||
<a id="timeouts"></a>
|
||||
~> Ignored attribute names can be matched by their name, not state ID.
|
||||
For example, if an `aws_route_table` has two routes defined and the
|
||||
`ignore_changes` list contains "route", both routes will be ignored.
|
||||
Additionally you can also use a single entry with a wildcard (e.g. `"*"`)
|
||||
which will match all attribute names. Using a partial string together
|
||||
with a wildcard (e.g. `"rout*"`) is **not** supported.
|
||||
|
||||
### Timeouts
|
||||
|
||||
|
@ -113,14 +105,15 @@ them in their configuration.
|
|||
|
||||
Example overwriting the `create` and `delete` timeouts:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_db_instance" "timeout_example" {
|
||||
allocated_storage = 10
|
||||
engine = "mysql"
|
||||
engine_version = "5.6.17"
|
||||
instance_class = "db.t1.micro"
|
||||
name = "mydb"
|
||||
[...]
|
||||
|
||||
# ...
|
||||
|
||||
timeouts {
|
||||
create = "60m"
|
||||
|
@ -134,8 +127,6 @@ attempting to configure the timeout for a Resource that does not support
|
|||
Timeouts, or overwriting a specific action that the Resource does not specify as
|
||||
an option, will result in an error. Valid units of time are `s`, `m`, `h`.
|
||||
|
||||
<a id="explicit-dependencies"></a>
|
||||
|
||||
### Explicit Dependencies
|
||||
|
||||
Terraform ensures that dependencies are successfully created before a
|
||||
|
@ -158,8 +149,8 @@ be allowed to determine dependencies automatically.
|
|||
|
||||
The syntax of `depends_on` is a list of resources and modules:
|
||||
|
||||
* Resources are `TYPE.NAME`, such as `aws_instance.web`.
|
||||
* Modules are `module.NAME`, such as `module.foo`.
|
||||
- Resources are `TYPE.NAME`, such as `aws_instance.web`.
|
||||
- Modules are `module.NAME`, such as `module.foo`.
|
||||
|
||||
When a resource depends on a module, _everything_ in that module must be
|
||||
created before the resource is created.
|
||||
|
@ -167,7 +158,7 @@ created before the resource is created.
|
|||
An example of a resource depending on both a module and resource is shown
|
||||
below. Note that `depends_on` can contain any number of dependencies:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
depends_on = ["aws_instance.leader", "module.vpc"]
|
||||
}
|
||||
|
@ -179,8 +170,6 @@ scenario by having your resources depend only on what they explicitly use.
|
|||
Please think carefully before you use `depends_on` to determine if Terraform
|
||||
could automatically do this a better way.
|
||||
|
||||
<a id="connection-block"></a>
|
||||
|
||||
### Connection block
|
||||
|
||||
Within a resource, you can optionally have a **connection block**.
|
||||
|
@ -196,8 +185,6 @@ but other data must be specified by the user.
|
|||
The full list of settings that can be specified are listed on
|
||||
the [provisioner connection page](/docs/provisioners/connection.html).
|
||||
|
||||
<a id="provisioners"></a>
|
||||
|
||||
### Provisioners
|
||||
|
||||
Within a resource, you can specify zero or more **provisioner
|
||||
|
@ -213,8 +200,6 @@ provide more specific connection info for a specific provisioner.
|
|||
An example use case might be to use a different user to log in
|
||||
for a single provisioner.
|
||||
|
||||
<a id="using-variables-with-count"></a>
|
||||
|
||||
## Using Variables With `count`
|
||||
|
||||
When declaring multiple instances of a resource using [`count`](#count), it is
|
||||
|
@ -228,7 +213,7 @@ For example, here's how you could create three [AWS
|
|||
Instances](/docs/providers/aws/r/instance.html) each with their own
|
||||
static IP address:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "instance_ips" {
|
||||
default = {
|
||||
"0" = "10.11.12.100"
|
||||
|
@ -244,8 +229,6 @@ resource "aws_instance" "app" {
|
|||
}
|
||||
```
|
||||
|
||||
<a id="multi-provider-instances"></a>
|
||||
|
||||
## Multiple Provider Instances
|
||||
|
||||
By default, a resource targets the provider based on its type. For example
|
||||
|
@ -257,7 +240,7 @@ a provider that is configured multiple times to support multiple regions, etc.
|
|||
|
||||
To target another provider, set the `provider` field:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "foo" {
|
||||
provider = "aws.west"
|
||||
|
||||
|
@ -269,7 +252,7 @@ The value of the field should be `TYPE` or `TYPE.ALIAS`. The `ALIAS` value
|
|||
comes from the `alias` field value when configuring the
|
||||
[provider](/docs/configuration/providers.html).
|
||||
|
||||
```
|
||||
```hcl
|
||||
provider "aws" {
|
||||
alias = "west"
|
||||
|
||||
|
@ -283,7 +266,7 @@ If no `provider` field is specified, the default provider is used.
|
|||
|
||||
The full syntax is:
|
||||
|
||||
```
|
||||
```text
|
||||
resource TYPE NAME {
|
||||
CONFIG ...
|
||||
[count = COUNT]
|
||||
|
@ -299,7 +282,7 @@ resource TYPE NAME {
|
|||
|
||||
where `CONFIG` is:
|
||||
|
||||
```
|
||||
```text
|
||||
KEY = VALUE
|
||||
|
||||
KEY {
|
||||
|
@ -309,7 +292,7 @@ KEY {
|
|||
|
||||
where `LIFECYCLE` is:
|
||||
|
||||
```
|
||||
```text
|
||||
lifecycle {
|
||||
[create_before_destroy = true|false]
|
||||
[prevent_destroy = true|false]
|
||||
|
@ -319,7 +302,7 @@ lifecycle {
|
|||
|
||||
where `CONNECTION` is:
|
||||
|
||||
```
|
||||
```text
|
||||
connection {
|
||||
KEY = VALUE
|
||||
...
|
||||
|
@ -328,7 +311,7 @@ connection {
|
|||
|
||||
where `PROVISIONER` is:
|
||||
|
||||
```
|
||||
```text
|
||||
provisioner NAME {
|
||||
CONFIG ...
|
||||
|
||||
|
|
|
@ -3,13 +3,15 @@ layout: "docs"
|
|||
page_title: "Configuration Syntax"
|
||||
sidebar_current: "docs-config-syntax"
|
||||
description: |-
|
||||
The syntax of Terraform configurations is custom. It is meant to strike a balance between human readable and editable as well as being machine-friendly. For machine-friendliness, Terraform can also read JSON configurations. For general Terraform configurations, however, we recommend using the Terraform syntax.
|
||||
The syntax of Terraform configurations is custom. It is meant to strike a
|
||||
balance between human readable and editable as well as being machine-friendly.
|
||||
For machine-friendliness, Terraform can also read JSON configurations. For
|
||||
general Terraform configurations, however, we recommend using the Terraform
|
||||
syntax.
|
||||
---
|
||||
|
||||
# Configuration Syntax
|
||||
|
||||
<a id="hcl"></a>
|
||||
|
||||
The syntax of Terraform configurations is called [HashiCorp Configuration
|
||||
Language (HCL)](https://github.com/hashicorp/hcl). It is meant to strike a
|
||||
balance between human readable and editable as well as being machine-friendly.
|
||||
|
@ -21,7 +23,7 @@ syntax.
|
|||
|
||||
Here is an example of Terraform's HCL syntax:
|
||||
|
||||
```
|
||||
```hcl
|
||||
# An AMI
|
||||
variable "ami" {
|
||||
description = "the AMI to use"
|
||||
|
@ -80,13 +82,15 @@ such as the "resource" and "variable" in the example above. These
|
|||
sections are similar to maps, but visually look better. For example,
|
||||
these are nearly equivalent:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "ami" {
|
||||
description = "the AMI to use"
|
||||
}
|
||||
```
|
||||
|
||||
# is equal to:
|
||||
is equal to:
|
||||
|
||||
```hcl
|
||||
variable = [{
|
||||
"ami": {
|
||||
"description": "the AMI to use",
|
||||
|
|
|
@ -19,7 +19,7 @@ already.
|
|||
|
||||
Terraform configuration looks like the following:
|
||||
|
||||
```
|
||||
```hcl
|
||||
terraform {
|
||||
required_version = "> 0.7.0"
|
||||
}
|
||||
|
@ -55,11 +55,14 @@ The value of this configuration is a comma-separated list of constraints.
|
|||
A constraint is an operator followed by a version, such as `> 0.7.0`.
|
||||
Constraints support the following operations:
|
||||
|
||||
* `=` (or no operator): exact version equality
|
||||
* `!=`: version not equal
|
||||
* `>`, `>=`, `<`, `<=`: version comparison, where "greater than" is
|
||||
a larger version number.
|
||||
* `~>`: pessimistic constraint operator. Example: for `~> 0.9`, this means
|
||||
- `=` (or no operator): exact version equality
|
||||
|
||||
- `!=`: version not equal
|
||||
|
||||
- `>`, `>=`, `<`, `<=`: version comparison, where "greater than" is a larger
|
||||
version number
|
||||
|
||||
- `~>`: pessimistic constraint operator. Example: for `~> 0.9`, this means
|
||||
`>= 0.9, < 1.0`. Example: for `~> 0.8.4`, this means `>= 0.8.4, < 0.9`
|
||||
|
||||
For modules, a minimum version is recommended, such as `> 0.8.0`. This
|
||||
|
@ -70,7 +73,7 @@ the consumer flexibility to use newer versions.
|
|||
|
||||
The full syntax is:
|
||||
|
||||
```
|
||||
```text
|
||||
terraform {
|
||||
required_version = VALUE
|
||||
}
|
||||
|
|
|
@ -22,7 +22,7 @@ already.
|
|||
|
||||
A variable configuration looks like the following:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "key" {
|
||||
type = "string"
|
||||
}
|
||||
|
@ -54,23 +54,20 @@ throughout the Terraform configuration.
|
|||
Within the block (the `{ }`) is configuration for the variable.
|
||||
These are the parameters that can be set:
|
||||
|
||||
* `type` (optional) - If set this defines the type of the variable.
|
||||
Valid values are `string`, `list`, and `map`. If this field is omitted, the
|
||||
variable type will be inferred based on the `default`. If no `default` is
|
||||
provided, the type is assumed to be `string`.
|
||||
- `type` (optional) - If set this defines the type of the variable. Valid values
|
||||
are `string`, `list`, and `map`. If this field is omitted, the variable type
|
||||
will be inferred based on the `default`. If no `default` is provided, the type
|
||||
is assumed to be `string`.
|
||||
|
||||
* `default` (optional) - This sets a default value for the variable.
|
||||
If no default is provided, the variable is considered required and
|
||||
Terraform will error if it is not set. The default value can be any of the
|
||||
data types Terraform supports. This is covered in more detail below.
|
||||
- `default` (optional) - This sets a default value for the variable. If no
|
||||
default is provided, the variable is considered required and Terraform will
|
||||
error if it is not set. The default value can be any of the data types
|
||||
Terraform supports. This is covered in more detail below.
|
||||
|
||||
* `description` (optional) - A human-friendly description for
|
||||
the variable. This is primarily for documentation for users
|
||||
using your Terraform configuration. A future version of Terraform
|
||||
will expose these descriptions as part of some Terraform CLI
|
||||
command.
|
||||
|
||||
------
|
||||
- `description` (optional) - A human-friendly description for the variable. This
|
||||
is primarily for documentation for users using your Terraform configuration. A
|
||||
future version of Terraform will expose these descriptions as part of some
|
||||
Terraform CLI command.
|
||||
|
||||
-> **Note**: Default values can be strings, lists, or maps. If a default is
|
||||
specified, it must match the declared type of the variable.
|
||||
|
@ -80,7 +77,7 @@ specified, it must match the declared type of the variable.
|
|||
String values are simple and represent a basic key to value
|
||||
mapping where the key is the variable name. An example is:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "key" {
|
||||
type = "string"
|
||||
default = "value"
|
||||
|
@ -89,7 +86,7 @@ variable "key" {
|
|||
|
||||
A multi-line string value can be provided using heredoc syntax.
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "long_key" {
|
||||
type = "string"
|
||||
default = <<EOF
|
||||
|
@ -106,7 +103,7 @@ for some values that change depending on some external pivot.
|
|||
A common use case for this is mapping cloud images to regions.
|
||||
An example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "images" {
|
||||
type = "map"
|
||||
default = {
|
||||
|
@ -120,7 +117,7 @@ variable "images" {
|
|||
|
||||
A list can also be useful to store certain variables. For example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "users" {
|
||||
type = "list"
|
||||
default = ["admin", "ubuntu"]
|
||||
|
@ -135,7 +132,7 @@ page.
|
|||
|
||||
The full syntax is:
|
||||
|
||||
```
|
||||
```text
|
||||
variable NAME {
|
||||
[type = TYPE]
|
||||
[default = DEFAULT]
|
||||
|
@ -145,7 +142,7 @@ variable NAME {
|
|||
|
||||
where `DEFAULT` is:
|
||||
|
||||
```
|
||||
```text
|
||||
VALUE
|
||||
|
||||
[
|
||||
|
@ -166,13 +163,13 @@ silently converted to string types. The implications of this are subtle and
|
|||
should be completely understood if you plan on using boolean values.
|
||||
|
||||
It is instead recommended you avoid using boolean values for now and use
|
||||
explicit strings. A future version of Terraform will properly support
|
||||
booleans and using the current behavior could result in backwards-incompatibilities
|
||||
in the future.
|
||||
explicit strings. A future version of Terraform will properly support booleans
|
||||
and using the current behavior could result in backwards-incompatibilities in
|
||||
the future.
|
||||
|
||||
For a configuration such as the following:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "active" {
|
||||
default = false
|
||||
}
|
||||
|
@ -182,15 +179,14 @@ The false is converted to a string `"0"` when running Terraform.
|
|||
|
||||
Then, depending on where you specify overrides, the behavior can differ:
|
||||
|
||||
* Variables with boolean values in a `tfvars` file will likewise be
|
||||
converted to "0" and "1" values.
|
||||
- Variables with boolean values in a `tfvars` file will likewise be converted to
|
||||
"0" and "1" values.
|
||||
|
||||
* Variables specified via the `-var` command line flag will be literal
|
||||
strings "true" and "false", so care should be taken to explicitly use
|
||||
"0" or "1".
|
||||
- Variables specified via the `-var` command line flag will be literal strings
|
||||
"true" and "false", so care should be taken to explicitly use "0" or "1".
|
||||
|
||||
* Variables specified with the `TF_VAR_` environment variables will
|
||||
be literal string values, just like `-var`.
|
||||
- Variables specified with the `TF_VAR_` environment variables will be literal
|
||||
string values, just like `-var`.
|
||||
|
||||
A future version of Terraform will fully support first-class boolean
|
||||
types which will make the behavior of booleans consistent as you would
|
||||
|
@ -199,8 +195,8 @@ expect. This may break some of the above behavior.
|
|||
When passing boolean-like variables as parameters to resource configurations
|
||||
that expect boolean values, they are converted consistently:
|
||||
|
||||
* "1", "true", "t" all become `true`
|
||||
* "0", "false", "f" all become `false`
|
||||
- "1", "true", "t" all become `true`
|
||||
- "0", "false", "f" all become `false`
|
||||
|
||||
The behavior of conversion above will likely not change in future
|
||||
Terraform versions. Therefore, simply using string values rather than
|
||||
|
@ -214,13 +210,13 @@ is the value of the variable.
|
|||
|
||||
For example, given the configuration below:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "image" {}
|
||||
```
|
||||
|
||||
The variable can be set via an environment variable:
|
||||
|
||||
```
|
||||
```shell
|
||||
$ TF_VAR_image=foo terraform apply
|
||||
```
|
||||
|
||||
|
@ -229,7 +225,7 @@ Maps and lists can be specified using environment variables as well using
|
|||
|
||||
For a list variable like so:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "somelist" {
|
||||
type = "list"
|
||||
}
|
||||
|
@ -237,13 +233,13 @@ variable "somelist" {
|
|||
|
||||
The variable could be set like so:
|
||||
|
||||
```
|
||||
```shell
|
||||
$ TF_VAR_somelist='["ami-abc123", "ami-bcd234"]' terraform plan
|
||||
```
|
||||
|
||||
Similarly, for a map declared like:
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "somemap" {
|
||||
type = "map"
|
||||
}
|
||||
|
@ -251,14 +247,12 @@ variable "somemap" {
|
|||
|
||||
The value can be set like this:
|
||||
|
||||
```
|
||||
```shell
|
||||
$ TF_VAR_somemap='{foo = "bar", baz = "qux"}' terraform plan
|
||||
```
|
||||
|
||||
## Variable Files
|
||||
|
||||
<a id="variable-files"></a>
|
||||
|
||||
Variables can be collected in files and passed all at once using the
|
||||
`-var-file=foo.tfvars` flag.
|
||||
|
||||
|
@ -271,13 +265,15 @@ Variables files use HCL or JSON to define variable values. Strings, lists or
|
|||
maps may be set in the same manner as the default value in a `variable` block
|
||||
in Terraform configuration. For example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
foo = "bar"
|
||||
xyz = "abc"
|
||||
|
||||
somelist = [
|
||||
"one",
|
||||
"two",
|
||||
]
|
||||
|
||||
somemap = {
|
||||
foo = "bar"
|
||||
bax = "qux"
|
||||
|
@ -286,13 +282,13 @@ somemap = {
|
|||
|
||||
The `-var-file` flag can be used multiple times per command invocation:
|
||||
|
||||
```
|
||||
terraform apply -var-file=foo.tfvars -var-file=bar.tfvars
|
||||
```shell
|
||||
$ terraform apply -var-file=foo.tfvars -var-file=bar.tfvars
|
||||
```
|
||||
|
||||
-> **Note**: Variable files are evaluated in the order in which they are specified
|
||||
on the command line. If a variable is defined in more than one variable file,
|
||||
the last value specified is effective.
|
||||
-> **Note**: Variable files are evaluated in the order in which they are
|
||||
specified on the command line. If a variable is defined in more than one
|
||||
variable file, the last value specified is effective.
|
||||
|
||||
### Variable Merging
|
||||
|
||||
|
@ -301,21 +297,21 @@ overridden. Map values are always merged.
|
|||
|
||||
For example, if you set a variable twice on the command line:
|
||||
|
||||
```
|
||||
terraform apply -var foo=bar -var foo=baz
|
||||
```shell
|
||||
$ terraform apply -var foo=bar -var foo=baz
|
||||
```
|
||||
|
||||
Then the value of `foo` will be `baz` since it was the last value seen.
|
||||
|
||||
However, for maps, the values are merged:
|
||||
|
||||
```
|
||||
terraform apply -var 'foo={foo="bar"}' -var 'foo={bar="baz"}'
|
||||
```shell
|
||||
$ terraform apply -var 'foo={foo="bar"}' -var 'foo={bar="baz"}'
|
||||
```
|
||||
|
||||
The resulting value of `foo` will be:
|
||||
|
||||
```
|
||||
```shell
|
||||
{
|
||||
foo = "bar"
|
||||
bar = "baz"
|
||||
|
@ -332,20 +328,20 @@ Both these files have the variable `baz` defined:
|
|||
|
||||
_foo.tfvars_
|
||||
|
||||
```
|
||||
```hcl
|
||||
baz = "foo"
|
||||
```
|
||||
|
||||
_bar.tfvars_
|
||||
|
||||
```
|
||||
```hcl
|
||||
baz = "bar"
|
||||
```
|
||||
|
||||
When they are passed in the following order:
|
||||
|
||||
```
|
||||
terraform apply -var-file=foo.tfvars -var-file=bar.tfvars
|
||||
```shell
|
||||
$ terraform apply -var-file=foo.tfvars -var-file=bar.tfvars
|
||||
```
|
||||
|
||||
The result will be that `baz` will contain the value `bar` because `bar.tfvars`
|
||||
|
|
|
@ -17,9 +17,8 @@ be able to do this.
|
|||
|
||||
Using `terraform import` is simple. An example is shown below:
|
||||
|
||||
```
|
||||
```shell
|
||||
$ terraform import aws_instance.bar i-abcd1234
|
||||
...
|
||||
```
|
||||
|
||||
The above command imports an AWS instance with the given ID to the
|
||||
|
|
|
@ -16,8 +16,6 @@ To persist logged output you can set `TF_LOG_PATH` in order to force the log to
|
|||
|
||||
If you find a bug with Terraform, please include the detailed log by using a service such as gist.
|
||||
|
||||
<a id="interpreting-a-crash-log"></a>
|
||||
|
||||
## Interpreting a Crash Log
|
||||
|
||||
If Terraform ever crashes (a "panic" in the Go runtime), it saves a log file
|
||||
|
@ -35,7 +33,7 @@ backtrace immediately following. So the first thing to do is to search the file
|
|||
for `panic: `, which should jump you right to this message. It will look
|
||||
something like this:
|
||||
|
||||
```
|
||||
```text
|
||||
panic: runtime error: invalid memory address or nil pointer dereference
|
||||
|
||||
goroutine 123 [running]:
|
||||
|
@ -61,7 +59,7 @@ created by net/rpc.(*Server).ServeCodec
|
|||
|
||||
The key part of this message is the first two lines that involve `hashicorp/terraform`. In this example:
|
||||
|
||||
```
|
||||
```text
|
||||
github.com/hashicorp/terraform/builtin/providers/aws.resourceAwsSomeResourceCreate(...)
|
||||
/opt/gopath/src/github.com/hashicorp/terraform/builtin/providers/aws/resource_aws_some_resource.go:123 +0x123
|
||||
```
|
||||
|
|
|
@ -20,7 +20,7 @@ However, when you upgrade you will need to manually delete old plugins from disk
|
|||
|
||||
If you don't do this you will see an error message like the following:
|
||||
|
||||
```
|
||||
```text
|
||||
[WARN] /usr/local/bin/terraform-provisioner-file overrides an internal plugin for file-provisioner.
|
||||
If you did not expect to see this message you will need to remove the old plugin.
|
||||
See https://www.terraform.io/docs/internals/plugins.html
|
||||
|
|
|
@ -18,7 +18,7 @@ Therefore, you can enter the source of any module, satisfy any required variable
|
|||
|
||||
Within a folder containing Terraform configurations, create a subfolder called `child`. In this subfolder, make one empty `main.tf` file. Then, back in the root folder containing the `child` folder, add this to one of your Terraform configuration files:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "child" {
|
||||
source = "./child"
|
||||
}
|
||||
|
@ -37,7 +37,7 @@ Inputs of a module are [variables](/docs/configuration/variables.html) and outpu
|
|||
|
||||
Let's add a variable and an output to our `child` module.
|
||||
|
||||
```
|
||||
```hcl
|
||||
variable "memory" {}
|
||||
|
||||
output "received" {
|
||||
|
@ -49,7 +49,7 @@ This will create a required variable, `memory`, and then an output, `received`,
|
|||
|
||||
You can then configure the module and use the output like so:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "child" {
|
||||
source = "./child"
|
||||
|
||||
|
@ -69,7 +69,7 @@ It is sometimes useful to embed files within the module that aren't Terraform co
|
|||
|
||||
In these cases, you can't use a relative path, since paths in Terraform are generally relative to the working directory from which Terraform was executed. Instead, you want to use a module-relative path. To do this, you should use the [path interpolated variables](/docs/configuration/interpolation.html).
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "server" {
|
||||
# ...
|
||||
|
||||
|
|
|
@ -31,7 +31,7 @@ Each is documented further below.
|
|||
|
||||
The easiest source is the local file path. For maximum portability, this should be a relative file path into a subdirectory. This allows you to organize your Terraform configuration into modules within one repository, for example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "./consul"
|
||||
}
|
||||
|
@ -43,7 +43,7 @@ Updates for file paths are automatic: when "downloading" the module using the [g
|
|||
|
||||
Terraform will automatically recognize GitHub URLs and turn them into a link to the specific Git repository. The syntax is simple:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "github.com/hashicorp/example"
|
||||
}
|
||||
|
@ -51,7 +51,7 @@ module "consul" {
|
|||
|
||||
Subdirectories within the repository can also be referenced:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "github.com/hashicorp/example//subdir"
|
||||
}
|
||||
|
@ -59,7 +59,7 @@ module "consul" {
|
|||
|
||||
These will fetch the modules using HTTPS. If you want to use SSH instead:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "git@github.com:hashicorp/example.git//subdir"
|
||||
}
|
||||
|
@ -77,7 +77,7 @@ If you need Terraform to be able to fetch modules from private GitHub repos on a
|
|||
|
||||
First, create a [machine user](https://developer.github.com/guides/managing-deploy-keys/#machine-users) on GitHub with read access to the private repo in question, then embed this user's credentials into the `source` parameter:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "private-infra" {
|
||||
source = "git::https://MACHINE-USER:MACHINE-PASS@github.com/org/privatemodules//modules/foo"
|
||||
}
|
||||
|
@ -89,7 +89,7 @@ module "private-infra" {
|
|||
|
||||
Terraform will automatically recognize BitBucket URLs and turn them into a link to the specific Git or Mercurial repository, for example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "bitbucket.org/hashicorp/consul"
|
||||
}
|
||||
|
@ -97,7 +97,7 @@ module "consul" {
|
|||
|
||||
Subdirectories within the repository can also be referenced:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "bitbucket.org/hashicorp/consul//subdir"
|
||||
}
|
||||
|
@ -111,7 +111,7 @@ BitBucket URLs will require that Git or Mercurial is installed on your system, d
|
|||
|
||||
Generic Git repositories are also supported. The value of `source` in this case should be a complete Git-compatible URL. Using generic Git repositories requires that Git is installed on your system.
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "git://hashicorp.com/consul.git"
|
||||
}
|
||||
|
@ -119,7 +119,7 @@ module "consul" {
|
|||
|
||||
You can also use protocols such as HTTP or SSH to reference a module, but you'll have specify to Terraform that it is a Git module, by prefixing the URL with `git::` like so:
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "git::https://hashicorp.com/consul.git"
|
||||
}
|
||||
|
@ -135,7 +135,7 @@ The URLs for Git repositories support the following query parameters:
|
|||
|
||||
* `ref` - The ref to checkout. This can be a branch, tag, commit, etc.
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "git::https://hashicorp.com/consul.git?ref=master"
|
||||
}
|
||||
|
@ -145,7 +145,7 @@ module "consul" {
|
|||
|
||||
Generic Mercurial repositories are supported. The value of `source` in this case should be a complete Mercurial-compatible URL. Using generic Mercurial repositories requires that Mercurial is installed on your system. You must tell Terraform that your `source` is a Mercurial repository by prefixing it with `hg::`.
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "hg::http://hashicorp.com/consul.hg"
|
||||
}
|
||||
|
@ -155,7 +155,7 @@ URLs for Mercurial repositories support the following query parameters:
|
|||
|
||||
* `rev` - The rev to checkout. This can be a branch, tag, commit, etc.
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "hg::http://hashicorp.com/consul.hg?rev=default"
|
||||
}
|
||||
|
@ -172,8 +172,8 @@ Terraform then looks for the resulting module URL in the following order:
|
|||
|
||||
2. Terraform will look for a `<meta>` tag with the name of `terraform-get`, for example:
|
||||
|
||||
```
|
||||
<meta name=“terraform-get” content="github.com/hashicorp/example" />
|
||||
```html
|
||||
<meta name="terraform-get” content="github.com/hashicorp/example" />
|
||||
```
|
||||
|
||||
### S3 Bucket
|
||||
|
@ -189,7 +189,7 @@ Here are a couple of examples.
|
|||
|
||||
Using the `s3` protocol.
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "s3::https://s3-eu-west-1.amazonaws.com/consulbucket/consul.zip"
|
||||
}
|
||||
|
@ -197,7 +197,7 @@ module "consul" {
|
|||
|
||||
Or directly using the bucket's URL.
|
||||
|
||||
```
|
||||
```hcl
|
||||
module "consul" {
|
||||
source = "consulbucket.s3-eu-west-1.amazonaws.com/consul.zip"
|
||||
}
|
||||
|
@ -215,4 +215,3 @@ archive formats:
|
|||
* zip
|
||||
* gz
|
||||
* bz2
|
||||
|
||||
|
|
|
@ -9,7 +9,7 @@ description: Using modules in Terraform is very similar to defining resources.
|
|||
|
||||
Using modules in Terraform is very similar to defining resources:
|
||||
|
||||
```
|
||||
```shell
|
||||
module "consul" {
|
||||
source = "github.com/hashicorp/consul/terraform/aws"
|
||||
servers = 3
|
||||
|
@ -26,8 +26,9 @@ The existence of the above configuration will tell Terraform to create the resou
|
|||
|
||||
You can instantiate a module multiple times.
|
||||
|
||||
```
|
||||
```hcl
|
||||
# my_buckets.tf
|
||||
|
||||
module "assets_bucket" {
|
||||
source = "./publish_bucket"
|
||||
name = "assets"
|
||||
|
@ -38,7 +39,8 @@ module "media_bucket" {
|
|||
name = "media"
|
||||
}
|
||||
```
|
||||
```
|
||||
|
||||
```hcl
|
||||
# publish_bucket/bucket-and-cloudfront.tf
|
||||
|
||||
variable "name" {} # this is the input parameter of the module
|
||||
|
@ -65,9 +67,8 @@ are documented in the [Module sources documentation](/docs/modules/sources.html)
|
|||
|
||||
Prior to running any Terraform command with a configuration that uses modules, you'll have to [get](/docs/commands/get.html) the modules. This is done using the [get command](/docs/commands/get.html).
|
||||
|
||||
```
|
||||
```shell
|
||||
$ terraform get
|
||||
...
|
||||
```
|
||||
|
||||
This command will download the modules if they haven't been already.
|
||||
|
@ -85,7 +86,7 @@ Additionally, because these map directly to variables, module configuration can
|
|||
|
||||
Modules can also specify their own [outputs](/docs/configuration/outputs.html). These outputs can be referenced in other places in your configuration, for example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "client" {
|
||||
ami = "ami-408c7f28"
|
||||
instance_type = "t1.micro"
|
||||
|
@ -99,8 +100,8 @@ Just like resources, this will create a dependency from the `aws_instance.client
|
|||
|
||||
To use module outputs via command line you have to specify the module name before the variable, for example:
|
||||
|
||||
```
|
||||
terraform output -module=consul server_availability_zone
|
||||
```shell
|
||||
$ terraform output -module=consul server_availability_zone
|
||||
```
|
||||
|
||||
## Plans and Graphs
|
||||
|
@ -109,15 +110,11 @@ Commands such as the [plan command](/docs/commands/plan.html) and [graph command
|
|||
|
||||
For example, with a configuration similar to what we've built above, here is what the graph output looks like by default:
|
||||
|
||||
<div class="center">
|
||||
![Terraform Expanded Module Graph](docs/module_graph_expand.png)
|
||||
</div>
|
||||
|
||||
If instead we set `-module-depth=0`, the graph will look like this:
|
||||
|
||||
<div class="center">
|
||||
![Terraform Module Graph](docs/module_graph.png)
|
||||
</div>
|
||||
|
||||
Other commands work similarly with modules. Note that the `-module-depth` flag is purely a formatting flag; it doesn't affect what modules are created or not.
|
||||
|
||||
|
@ -125,8 +122,8 @@ Other commands work similarly with modules. Note that the `-module-depth` flag i
|
|||
|
||||
The [taint command](/docs/commands/taint.html) can be used to _taint_ specific resources within a module:
|
||||
|
||||
```
|
||||
terraform taint -module=salt_master aws_instance.salt_master
|
||||
```shell
|
||||
$ terraform taint -module=salt_master aws_instance.salt_master
|
||||
```
|
||||
|
||||
It is currently not possible to taint an entire module.
|
||||
|
|
|
@ -41,7 +41,7 @@ are defined is `~/.terraformrc` for Unix-like systems and
|
|||
|
||||
An example that configures a new provider is shown below:
|
||||
|
||||
```
|
||||
```hcl
|
||||
providers {
|
||||
privatecloud = "/path/to/privatecloud"
|
||||
}
|
||||
|
@ -74,7 +74,7 @@ the road.
|
|||
With the directory made, create a `main.go` file. This project will
|
||||
be a binary so the package is "main":
|
||||
|
||||
```
|
||||
```golang
|
||||
package main
|
||||
|
||||
import (
|
||||
|
|
|
@ -70,7 +70,7 @@ This structure implements the `ResourceProvider` interface. We
|
|||
recommend creating this structure in a function to make testing easier
|
||||
later. Example:
|
||||
|
||||
```
|
||||
```golang
|
||||
func Provider() *schema.Provider {
|
||||
return &schema.Provider{
|
||||
...
|
||||
|
@ -100,7 +100,7 @@ As part of the unit tests, you should call `InternalValidate`. This is used
|
|||
to verify the structure of the provider and all of the resources, and reports
|
||||
an error if it is invalid. An example test is shown below:
|
||||
|
||||
```
|
||||
```golang
|
||||
func TestProvider(t *testing.T) {
|
||||
if err := Provider().(*schema.Provider).InternalValidate(); err != nil {
|
||||
t.Fatalf("err: %s", err)
|
||||
|
@ -118,7 +118,7 @@ These resources are put into the `ResourcesMap` field of the provider
|
|||
structure. Again, we recommend creating functions to instantiate these.
|
||||
An example is shown below.
|
||||
|
||||
```
|
||||
```golang
|
||||
func resourceComputeAddress() *schema.Resource {
|
||||
return &schema.Resource {
|
||||
...
|
||||
|
@ -211,7 +211,7 @@ subsequent `terraform apply` fixes this resource.
|
|||
Most of the time, partial state is not required. When it is, it must be
|
||||
specifically enabled. An example is shown below:
|
||||
|
||||
```
|
||||
```golang
|
||||
func resourceUpdate(d *schema.ResourceData, meta interface{}) error {
|
||||
// Enable partial state mode
|
||||
d.Partial(true)
|
||||
|
|
|
@ -8,24 +8,25 @@ description: |-
|
|||
|
||||
# Chef Provisioner
|
||||
|
||||
The `chef` provisioner installs, configures and runs the Chef Client on a remote resource. The `chef` provisioner supports both `ssh`
|
||||
and `winrm` type [connections](/docs/provisioners/connection.html).
|
||||
The `chef` provisioner installs, configures and runs the Chef Client on a remote
|
||||
resource. The `chef` provisioner supports both `ssh` and `winrm` type
|
||||
[connections](/docs/provisioners/connection.html).
|
||||
|
||||
## Requirements
|
||||
|
||||
The `chef` provisioner has some prerequisites for specific connection types:
|
||||
|
||||
* For `ssh` type connections, `cURL` must be available on the remote host.
|
||||
* For `winrm` connections, `PowerShell 2.0` must be available on the remote host.
|
||||
- For `ssh` type connections, `cURL` must be available on the remote host.
|
||||
- For `winrm` connections, `PowerShell 2.0` must be available on the remote host.
|
||||
|
||||
Without these prerequisites, your provisioning execution will fail.
|
||||
|
||||
## Example usage
|
||||
|
||||
```
|
||||
# Start a initial chef run on a resource
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
provisioner "chef" {
|
||||
attributes_json = <<-EOF
|
||||
{
|
||||
|
|
|
@ -11,16 +11,17 @@ description: |-
|
|||
Many provisioners require access to the remote resource. For example,
|
||||
a provisioner may need to use SSH or WinRM to connect to the resource.
|
||||
|
||||
Terraform uses a number of defaults when connecting to a resource, but these
|
||||
can be overridden using a `connection` block in either a `resource` or `provisioner`.
|
||||
Any `connection` information provided in a `resource` will apply to all the
|
||||
provisioners, but it can be scoped to a single provisioner as well. One use case
|
||||
is to have an initial provisioner connect as the `root` user to setup user accounts, and have
|
||||
subsequent provisioners connect as a user with more limited permissions.
|
||||
Terraform uses a number of defaults when connecting to a resource, but these can
|
||||
be overridden using a `connection` block in either a `resource` or
|
||||
`provisioner`. Any `connection` information provided in a `resource` will apply
|
||||
to all the provisioners, but it can be scoped to a single provisioner as well.
|
||||
One use case is to have an initial provisioner connect as the `root` user to
|
||||
setup user accounts, and have subsequent provisioners connect as a user with
|
||||
more limited permissions.
|
||||
|
||||
## Example usage
|
||||
|
||||
```
|
||||
```hcl
|
||||
# Copies the file as the root user using SSH
|
||||
provisioner "file" {
|
||||
source = "conf/myapp.conf"
|
||||
|
|
|
@ -14,7 +14,7 @@ supports both `ssh` and `winrm` type [connections](/docs/provisioners/connection
|
|||
|
||||
## Example usage
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
|
|
|
@ -14,7 +14,7 @@ bootstrap a resource, cleanup before destroy, run configuration management, etc.
|
|||
|
||||
Provisioners are added directly to any resource:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
|
@ -82,7 +82,7 @@ file.
|
|||
|
||||
Example of multiple provisioners:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
|
@ -102,14 +102,14 @@ By default, provisioners that fail will also cause the Terraform apply
|
|||
itself to error. The `on_failure` setting can be used to change this. The
|
||||
allowed values are:
|
||||
|
||||
* `"continue"` - Ignore the error and continue with creation or destruction.
|
||||
- `"continue"` - Ignore the error and continue with creation or destruction.
|
||||
|
||||
* `"fail"` - Error (the default behavior). If this is a creation provisioner,
|
||||
- `"fail"` - Error (the default behavior). If this is a creation provisioner,
|
||||
taint the resource.
|
||||
|
||||
Example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
|
|
|
@ -8,21 +8,22 @@ description: |-
|
|||
|
||||
# local-exec Provisioner
|
||||
|
||||
The `local-exec` provisioner invokes a local executable after a resource
|
||||
is created. This invokes a process on the machine running Terraform, not on
|
||||
the resource. See the `remote-exec` [provisioner](/docs/provisioners/remote-exec.html)
|
||||
to run commands on the resource.
|
||||
The `local-exec` provisioner invokes a local executable after a resource is
|
||||
created. This invokes a process on the machine running Terraform, not on the
|
||||
resource. See the `remote-exec`
|
||||
[provisioner](/docs/provisioners/remote-exec.html) to run commands on the
|
||||
resource.
|
||||
|
||||
Note that even though the resource will be fully created when the provisioner is run,
|
||||
there is no guarantee that it will be in an operable state - for example system services
|
||||
such as `sshd` may not be started yet on compute resources.
|
||||
Note that even though the resource will be fully created when the provisioner is
|
||||
run, there is no guarantee that it will be in an operable state - for example
|
||||
system services such as `sshd` may not be started yet on compute resources.
|
||||
|
||||
## Example usage
|
||||
|
||||
```
|
||||
# Join the newly created machine to our Consul cluster
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
provisioner "local-exec" {
|
||||
command = "echo ${aws_instance.web.private_ip} >> private_ips.txt"
|
||||
}
|
||||
|
@ -37,4 +38,3 @@ The following arguments are supported:
|
|||
as a relative path to the current working directory or as an absolute path.
|
||||
It is evaluated in a shell, and can use environment variables or Terraform
|
||||
variables.
|
||||
|
||||
|
|
|
@ -22,12 +22,11 @@ graph.
|
|||
|
||||
## Example usage
|
||||
|
||||
```
|
||||
# Bootstrap a cluster after all its instances are up
|
||||
```hcl
|
||||
resource "aws_instance" "cluster" {
|
||||
count = 3
|
||||
|
||||
// ...
|
||||
# ...
|
||||
}
|
||||
|
||||
resource "null_resource" "cluster" {
|
||||
|
@ -58,4 +57,3 @@ In addition to all the resource configuration available, `null_resource` support
|
|||
* `triggers` - A mapping of values which should trigger a rerun of this set of
|
||||
provisioners. Values are meant to be interpolated references to variables or
|
||||
attributes of other resources.
|
||||
|
||||
|
|
|
@ -17,10 +17,10 @@ provisioner supports both `ssh` and `winrm` type [connections](/docs/provisioner
|
|||
|
||||
## Example usage
|
||||
|
||||
```
|
||||
# Run puppet and join our Consul cluster
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
provisioner "remote-exec" {
|
||||
inline = [
|
||||
"puppet apply",
|
||||
|
@ -53,7 +53,7 @@ upload the script with the
|
|||
[file provisioner](/docs/provisioners/file.html)
|
||||
and then use `inline` to call it. Example:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "web" {
|
||||
# ...
|
||||
|
||||
|
|
|
@ -38,7 +38,7 @@ to switch environments you can use `terraform env select`, etc.
|
|||
|
||||
For example, creating an environment:
|
||||
|
||||
```
|
||||
```text
|
||||
$ terraform env new bar
|
||||
Created and switched to environment "bar"!
|
||||
|
||||
|
@ -62,7 +62,7 @@ Referencing the current environment is useful for changing behavior based
|
|||
on the environment. For example, for non-default environments, it may be useful
|
||||
to spin up smaller cluster sizes. You can do this:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "example" {
|
||||
count = "${terraform.env == "default" ? 5 : 1}"
|
||||
|
||||
|
@ -73,7 +73,7 @@ resource "aws_instance" "example" {
|
|||
Another popular use case is using the environment as part of naming or
|
||||
tagging behavior:
|
||||
|
||||
```
|
||||
```hcl
|
||||
resource "aws_instance" "example" {
|
||||
tags { Name = "web - ${terraform.env}" }
|
||||
|
||||
|
|
Loading…
Reference in New Issue