125 lines
4.7 KiB
Markdown
125 lines
4.7 KiB
Markdown
---
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layout: "docs"
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page_title: "Provisioner Connections"
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sidebar_current: "docs-provisioners-connection"
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description: |-
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Many provisioners require access to the remote resource. For example, a provisioner may need to use SSH or WinRM to connect to the resource.
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---
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# Provisioner Connections
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Many provisioners require access to the remote resource. For example,
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a provisioner may need to use SSH or WinRM to connect to the resource.
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Terraform uses a number of defaults when connecting to a resource, but these
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can be overridden using `connection` block in either a `resource` or `provisioner`.
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Any `connection` information provided in a `resource` will apply to all the
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provisioners, but it can be scoped to a single provisioner as well. One use case
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is to have an initial provisioner connect as root to setup user accounts, and have
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subsequent provisioners connect as a user with more limited permissions.
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## Example usage
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```
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# Copies the file as the root user using SSH
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provisioner "file" {
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source = "conf/myapp.conf"
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destination = "/etc/myapp.conf"
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connection {
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user = "root"
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password = "${var.root_password}"
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}
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}
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# Copies the file as the Administrator user using WinRM
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provisioner "file" {
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source = "conf/myapp.conf"
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destination = "C:/App/myapp.conf"
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connection {
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type = "winrm"
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user = "Administrator"
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password = "${var.admin_password}"
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}
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}
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```
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## Argument Reference
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**The following arguments are supported by all connection types:**
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* `type` - The connection type that should be used. Valid types are "ssh" and "winrm"
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This defaults to "ssh".
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* `user` - The user that we should use for the connection. Defaults to "root" when
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using type "ssh" and defaults to "Administrator" when using type "winrm".
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* `password` - The password we should use for the connection. In some cases this is
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provided by the provider.
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* `host` - The address of the resource to connect to. This is provided by the provider.
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* `port` - The port to connect to. Defaults to 22 when using type "ssh" and defaults
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to 5985 when using type "winrm".
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* `timeout` - The timeout to wait for the connection to become available. This defaults
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to 5 minutes. Should be provided as a string like "30s" or "5m".
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* `script_path` - The path used to copy scripts meant for remote execution.
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**Additional arguments only supported by the "ssh" connection type:**
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* `private_key` - The contents of an SSH key to use for the connection. These can
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be loaded from a file on disk using the [`file()` interpolation
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function](/docs/configuration/interpolation.html#file_path_). This takes
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preference over the password if provided.
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* `agent` - Set to false to disable using ssh-agent to authenticate. On Windows the
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only supported SSH authentication agent is
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[Pageant](http://the.earth.li/~sgtatham/putty/0.66/htmldoc/Chapter9.html#pageant)
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**Additional arguments only supported by the "winrm" connection type:**
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* `https` - Set to true to connect using HTTPS instead of HTTP.
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* `insecure` - Set to true to not validate the HTTPS certificate chain.
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* `cacert` - The CA certificate to validate against.
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<a id="bastion"></a>
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## Connecting through a Bastion Host with SSH
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The `ssh` connection additionally supports the following fields to facilitate a
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[bastion host](https://en.wikipedia.org/wiki/Bastion_host) connection.
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* `bastion_host` - Setting this enables the bastion Host connection. This host
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will be connected to first, and the `host` connection will be made from there.
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* `bastion_port` - The port to use connect to the bastion host. Defaults to the
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value of `port`.
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* `bastion_user` - The user to use to connect to the bastion host. Defaults to
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the value of `user`.
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* `bastion_password` - The password we should use for the bastion host.
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Defaults to the value of `password`.
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* `bastion_private_key` - The contents of an SSH key file to use for the bastion
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host. These can be loaded from a file on disk using the [`file()`
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interpolation function](/docs/configuration/interpolation.html#file_path_).
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Defaults to the value of `private_key`.
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## Deprecations
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These are supported for backwards compatibility and may be removed in a
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future version:
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* `key_file` - A path to or the contents of an SSH key to use for the
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connection. These can be loaded from a file on disk using the [`file()`
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interpolation function](/docs/configuration/interpolation.html#file_path_).
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This takes preference over the password if provided.
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* `bastion_key_file` - The contents of an SSH key file to use for the bastion
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host. These can be loaded from a file on disk using the [`file()`
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interpolation function](/docs/configuration/interpolation.html#file_path_).
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Defaults to the value of `key_file`.
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