CentOS 7 上に docker を yum でデフォルトインストールし、サービス起動しようとしたところ以下のエラーで起動できません。
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[root@mycentos7 takeda]#
systemctl start docker
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.
[root@mycentos7 takeda]# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since 月 2018-09-17 00:56:24 JST; 1min 9s ago
Docs: http://docs.docker.com
Process: 10824 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current --init-path=/usr/libexec/docker/docker-init-current --seccomp-profile=/etc/docker/seccomp.json $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY $REGISTRIES (code=exited, status=1/FAILURE)
Main PID: 10824 (code=exited, status=1/FAILURE)
9月 17 00:56:22 mycentos7 systemd[1]: Starting Docker Application Container Engine...
9月 17 00:56:22 mycentos7 dockerd-current[10824]: time="2018-09-17T00:56:22.915287681+09:00" level=warning...und"
9月 17 00:56:22 mycentos7 dockerd-current[10824]: time="2018-09-17T00:56:22.927551156+09:00" level=info ms...829"
9月 17 00:56:24 mycentos7 dockerd-current[10824]: Error starting daemon: SELinux is not supported with the...lse)
9月 17 00:56:24 mycentos7 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
9月 17 00:56:24 mycentos7 systemd[1]: Failed to start Docker Application Container Engine.
9月 17 00:56:24 mycentos7 systemd[1]: Unit docker.service entered failed state.
9月 17 00:56:24 mycentos7 systemd[1]: docker.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
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STORAGE_DRIVER をデフォルトで設定される overlay2 から、devicemappr に変更すると起動できました。
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デフォルト
[root@mycentos7 takeda]# cat /etc/sysconfig/docker-storage-setup
STORAGE_DRIVER=overlay2
[root@mycentos7 takeda]# cat /etc/sysconfig/docker-storage
DOCKER_STORAGE_OPTIONS="--storage-driver overlay2 "
→変更
[root@mycentos7 takeda]# echo STORAGE_DRIVER=devicemappr > /etc/sysconfig/docker-storage-setup
[root@mycentos7 takeda]# echo DOCKER_STORAGE_OPTIONS="--storage-driver devicemapper " > /etc/sysconfig/docker-storage
→変更後
[root@mycentos7 takeda]#
cat /etc/sysconfig/docker-storage-setup
STORAGE_DRIVER=devicemappr
[root@mycentos7 takeda]#
cat /etc/sysconfig/docker-storage
DOCKER_STORAGE_OPTIONS=--storage-driver devicemapper
（DOCKER_STORAGE_OPTIONS のみ変更で起動できましたが、一応両方 devicemappr に変更しています。）
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[root@mycentos7 takeda]# systemctl start docker
[root@mycentos7 takeda]# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
Active:
active (running) since 月 2018-09-17 01:14:58 JST; 6s ago
Docs: http://docs.docker.com
Main PID: 11778 (dockerd-current)
CGroup: /system.slice/docker.service
tq11778 /usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --...
mq11782 /usr/bin/docker-containerd-current -l unix:///var/run/docker/libcontainerd/docker-containerd....
9月 17 01:14:57 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:57.433343640+09:00" level=warning...ed."
9月 17 01:14:57 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:57.597673721+09:00" level=info ms...nds"
9月 17 01:14:57 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:57.600587978+09:00" level=info ms...rt."
9月 17 01:14:57 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:57.634389495+09:00" level=info ms...rue"
9月 17 01:14:58 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:58.405195396+09:00" level=info ms...ess"
9月 17 01:14:58 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:58.788143620+09:00" level=info ms...ne."
9月 17 01:14:58 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:58.936721690+09:00" level=info ms...ion"
9月 17 01:14:58 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:58.936809926+09:00" level=info ms...13.1
9月 17 01:14:58 mycentos7 systemd[1]: Started Docker Application Container Engine.
9月 17 01:14:58 mycentos7 dockerd-current[11778]: time="2018-09-17T01:14:58.958821424+09:00" level=info ms...ock"
Hint: Some lines were ellipsized, use -l to show in full.
以下の情報の通りです
『CentOS 7：Docker App Container Engineの起動に失敗しました - graphdriverの初期化エラー：ドライバがサポートされていません ＃32』
『SELinux is not supported with the overlay graph driver』
■環境は以下の通り。
Docker:Docker version 1.13.1, build 6e3bb8e/1.13.1
ゲストOS: CentOS Linux release 7.3.1611 (Core)
ホストOS: Windows 10 1803
