====== 23 Docker log設定 ======


===== ログの場所 =====

<code>
# ls -alh /var/lib/docker/containers/*/*-json.log
</code>

<code>
# docker inspect app-proxy-1 | grep -i log
        "LogPath": "/var/lib/docker/containers/415a09895929c250e05f2ec463c2affc144166884a93b1591e8cd2a884b86a7a/415a09895929c250e05f2ec463c2affc144166884a93b1591e8cd2a884b86a7a-json.log",
            "LogConfig": {

</code>


===== 1.ログを消す =====

<code>
# truncate -s 0 /var/lib/docker/containers/415a09895929c250e05f2ec463c2affc144166884a93b1591e8cd2a884b86a7a/415a09895929c250e05f2ec463c2affc144166884a93b1591e8cd2a884b86a7a-json.log
</code>


===== 2. docker-compose.ymlで設定 =====

<code|docker-compose.yml>
services:
  app:
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
</code>

===== 3. Dockerの設定ファイル =====


<code|/etc/docker/daemon.json>
{
   "log-driver": "json-file",
   "log-opts": {"max-size": "10m", "max-file": "3"}
}
</code>
{{tag>Docker}}