> For the complete documentation index, see [llms.txt](https://docs.keeper.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keeper.io/keeper-connection-manager/jp/supported-protocols/connecting-to-host-instance.md).

# ホストインスタンスへの接続

DockerコンテナからKCMホストインスタンスへの接続

Dockerインストール環境では、`host.docker.internal` という特殊なホスト名を使用して、Keeperコネクションマネージャーホストインスタンスへの接続を確立できます。

設定するには、以下のように、`/etc/kcm-setup/docker-compose.yml` ファイルの `guacd` セクションを更新して、`extra_hosts` パラメータを追加します。

```
    guacd:
        image: keeper/guacd:2
        restart: unless-stopped
        environment:
            ACCEPT_EULA: "Y"
        volumes:
            - "common-storage:/var/lib/guacamole:rw"
        extra_hosts:
            - "host.docker.internal:host-gateway"

```

Docker環境を更新して、変更を反映させます。

```
sudo ./kcm-setup.run stop
sudo ./kcm-setup.run upgrade
```

すると、Keeperコネクションマネージャー内から、`host.docker.internal` というホスト名を参照する新しい接続を作成できます。

<figure><img src="https://4041518992-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZ7s6LQJaKa1G17O787JG%2Fuploads%2Fasj8RRpYYM0472i2Z291%2Fimage.png?alt=media&amp;token=9af51b7c-e936-49db-9311-743dd4b8151e" alt=""><figcaption><p>KCMホストインスタンスへの接続</p></figcaption></figure>

詳しくは、以下の記事をご参照ください。

{% embed url="<https://medium.com/@TimvanBaarsen/how-to-connect-to-the-docker-host-from-inside-a-docker-container-112b4c71bc66>" %}


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