terraform/website/source/docs/provisioners/connection.html.markdown

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---
layout: "docs"
page_title: "Provisioner Connections"
sidebar_current: "docs-provisioners-connection"
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description: |-
Many provisioners require access to the remote resource. For example, a provisioner may need to use ssh to connect to the resource.
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---
# Provisioner Connections
Many provisioners require access to the remote resource. For example,
a provisioner may need to use ssh to connect to the resource.
Terraform uses a number of defaults when connecting to a resource, but these
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
provisioners, but it can be scoped to a single provisioner as well. One use case
is to have an initial provisioner connect as root to setup user accounts, and have
subsequent provisioners connect as a user with more limited permissions.
## Example usage
```
# Copies the file as the root user using a password
provisioner "file" {
source = "conf/myapp.conf"
destination = "/etc/myapp.conf"
connection {
user = "root"
password = "${var.root_password}"
}
}
```
## Argument Reference
The following arguments are supported:
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* `type` - The connection type that should be used. This defaults to "ssh". The type
of connection supported depends on the provisioner.
* `user` - The user that we should use for the connection. This defaults to "root".
* `password` - The password we should use for the connection.
* `key_file` - The SSH key to use for the connection. This takes preference over the
password if provided.
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* `agent` - Set to true to enable using ssh-agent to authenticate.
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* `host` - The address of the resource to connect to. This is provided by the provider.
* `port` - The port to connect to. This defaults to 22.
* `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".