【terraform】terraform importでハマったこと

## 概要
`terraform import`をするだけなのに、それが上手くいかず困ったので備忘録として記す

### エラー① resource address XX does not exist in the configuration.
リソースがないよって怒られているエラー
```
$ terraform import module.network.aws_security_group.XXX sg-XXX
Error: resource address "module.network.aws_security_group.XXX" does not exist in the configuration.

Before importing this resource, please create its configuration in module.network. For example:

resource "aws_security_group" "XXX" {
  # (resource arguments)
}
```
### エラー② Invalid address
アドレスが違うよって怒られる
```
$ terraform import module.network.module.aws_security_group.XXX XXX
Error: Invalid address

  on <import-address> line 1:
   1: module.network.module.aws_security_group.XXX

Resource specification must include a resource type and name.
```
### エラー③ The import command expects two arguments.
インポートコマンドの定義の仕方が違うと怒られる
```
$ terraform import aws --regions=ap-northeast-1 --resources=security-group --filter=aws_security_group=sg-XXX 
The import command expects two arguments.
Usage: terraform import [options] ADDR ID

  Import existing infrastructure into your Terraform state.

  This will find and import the specified resource into your Terraform
  state, allowing existing infrastructure to come under Terraform
  management without having to be initially created by Terraform.

  The ADDR specified is the address to import the resource to. Please
  see the documentation online for resource addresses. The ID is a
  resource-specific ID to identify that resource being imported. Please
  reference the documentation for the resource type you're importing to
  determine the ID syntax to use. It typically matches directly to the ID
  that the provider uses.

  The current implementation of Terraform import can only import resources
  into the state. It does not generate configuration. A future version of
  Terraform will also generate configuration.

  Because of this, prior to running terraform import it is necessary to write
  a resource configuration block for the resource manually, to which the
  imported object will be attached.

  This command will not modify your infrastructure, but it will make
  network requests to inspect parts of your infrastructure relevant to
  the resource being imported.

Options:

  -backup=path            Path to backup the existing state file before
                          modifying. Defaults to the "-state-out" path with
                          ".backup" extension. Set to "-" to disable backup.

  -config=path            Path to a directory of Terraform configuration files
                          to use to configure the provider. Defaults to pwd.
                          If no config files are present, they must be provided
                          via the input prompts or env vars.

  -allow-missing-config   Allow import when no resource configuration block exists.

  -input=true             Ask for input for variables if not directly set.

  -lock=true              Lock the state file when locking is supported.

  -lock-timeout=0s        Duration to retry a state lock.

  -no-color               If specified, output won't contain any color.

  -state=PATH             Path to the source state file. Defaults to the configured
                          backend, or "terraform.tfstate"

  -state-out=PATH         Path to the destination state file to write to. If this
                          isn't specified, the source state file will be used. This
                          can be a new or existing path.

  -var 'foo=bar'          Set a variable in the Terraform configuration. This
                          flag can be set multiple times. This is only useful
                          with the "-config" flag.

  -var-file=foo           Set variables in the Terraform configuration from
                          a file. If "terraform.tfvars" or any ".auto.tfvars"
                          files are present, they will be automatically loaded.

  -ignore-remote-version  Continue even if remote and local Terraform versions
                          differ. This may result in an unusable workspace, and
                          should be used with extreme caution.
```

## 解決策
### 
```
$ terraform import module.ディレクトリ.ファイル名.ファイル内で定義している名前 セキュリティグループID

module.network.aws_security_group.XXX: Importing from ID "XXX"...
module.network.aws_security_group.XXX: Import prepared!
  Prepared aws_security_group for import
module.network.aws_security_group.XXX: Refreshing state... [id=sg-XXX]

Import successful!

The resources that were imported are shown above. These resources are now in
your Terraform state and will henceforth be managed by Terraform.
```


## 参考文献
https://developer.hashicorp.com/terraform/cli/state/resource-addressing