With an EC2 instance that only had a single network interface, the primary interface, the Update function would call `ModifyInstanceAttribute()` on the target instance. This would only work if there was a single network interface attached to the EC2 instance. If, however, a secondary network interface was attached to the instance, the `ModifyInstanceAttribute()` API call would fail with the following error message:
> There are multiple interfaces attached to instance 'i-XXXXX'. Please specify an interface ID for the operation instead.
After this changeset, modifying instance security groups now makes the correct call to `ModifyNetworkInterfaceAttribute()` in order to modify the list of security groups on the primary network interface, as initially configured during the instances creation.
This change is also safe from an instance that has a non-default primary network interface, as the instance attribute `vpc_security_group_ids` conflicts with the new `network_interface` attribute.
Test Output:
```
$ make testacc TEST=./builtin/providers/aws TESTARGS="-run=TestAccAWSInstance_addSecurityGroupNetworkInterface"
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/05/08 17:52:42 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSInstance_addSecurityGroupNetworkInterface -timeout 120m
=== RUN TestAccAWSInstance_addSecurityGroupNetworkInterface
--- PASS: TestAccAWSInstance_addSecurityGroupNetworkInterface (327.75s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws 327.756s
```
The implementation would return an error if the resource was detected as
removed - this would break Terraform instead of making it re-create the
missing service account.
* provider/aws: Refresh ssm document from state on 404
Originally reported in #13976
When an SSM Document was deleted outside of Terraform, a terraform
refresh would return the following:
```
% terraform plan
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
aws_ssm_document.foo: Refreshing state... (ID: test_document-stack72)
Error refreshing state: 1 error(s) occurred:
* aws_ssm_document.foo: aws_ssm_document.foo: [ERROR] Error describing SSM document: InvalidDocument:
status code: 400, request id: 70c9bed1-33bb-11e7-99aa-697e9b0914e9
```
On applying this patch, it now looks as follows:
```
% terraform plan
[WARN] /Users/stacko/Code/go/bin/terraform-provider-aws overrides an internal plugin for aws-provider.
If you did not expect to see this message you will need to remove the old plugin.
See https://www.terraform.io/docs/internals/internal-plugins.html
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.
aws_ssm_document.foo: Refreshing state... (ID: test_document-stack72)
The Terraform execution plan has been generated and is shown below.
Resources are shown in alphabetical order for quick scanning. Green resources
will be created (or destroyed and then created if an existing resource
exists), yellow resources are being changed in-place, and red resources
will be destroyed. Cyan entries are data sources to be read.
Note: You didn't specify an "-out" parameter to save this plan, so when
"apply" is called, Terraform can't guarantee this is what will execute.
+ aws_ssm_document.foo
arn: "<computed>"
content: " {\n \"schemaVersion\": \"1.2\",\n \"description\": \"Check ip configuration of a Linux instance.\",\n \"parameters\": {\n\n },\n \"runtimeConfig\": {\n \"aws:runShellScript\": {\n \"properties\": [\n {\n \"id\": \"0.aws:runShellScript\",\n \"runCommand\": [\"ifconfig\"]\n }\n ]\n }\n }\n }\n"
created_date: "<computed>"
default_version: "<computed>"
description: "<computed>"
document_type: "Command"
hash: "<computed>"
hash_type: "<computed>"
latest_version: "<computed>"
name: "test_document-stack72"
owner: "<computed>"
parameter.#: "<computed>"
platform_types.#: "<computed>"
schema_version: "<computed>"
status: "<computed>"
Plan: 1 to add, 0 to change, 0 to destroy.
```
* Update resource_aws_ssm_document.go
Add a data source for listing available versions for Container Engine
clusters or retrieving the latest available version.
This is mostly to support our tests for specifying a version for cluster
creation; the withVersion test has been updated to use the data source,
meaning it will stop failing on us as new versions get released.
Paul Stack