CentOS 7 - Docker install

1. Docker Install 

yum install -y docker

1.1 Install 후 Docker Version

[root@blue ~]# docker version  Client:  Version:         1.13.1  API version:     1.26  Package version:  Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

2. docker service start

systemctl start docker

2.1 정상 실행

[root@blue ~]# service docker start Redirecting to /bin/systemctl start  docker.service

2.2 오류 발생

[root@blue ~]# service docker start Redirecting to /bin/systemctl start  docker.service Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.

2.2.1 오류 : could not change group /var/run/docker.sock to docker: group docker not found"

Oct 29 11:01:05 blue systemd[1]: Starting Docker Application Container Engine... Oct 29 11:01:06 blue dockerd-current[4597]: time="2018-10-29T11:01:06.015187764+09:00" level=warning msg="could not change group /var/run/docker.sock to docker: group docker not found" Oct 29 11:01:06 blue dockerd-current[4597]: time="2018-10-29T11:01:06.016165310+09:00" level=info msg="libcontainerd: new containerd process, pid: 4612" Oct 29 11:01:07 blue dockerd-current[4597]: Error starting daemon: SELinux is not supported with the overlay2 graph driver on this kernel. Either boot into a newer kernel or disable se...nabled=false) Oct 29 11:01:07 blue systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE Oct 29 11:01:07 blue systemd[1]: Failed to start Docker Application Container Engine. Oct 29 11:01:07 blue systemd[1]: Unit docker.service entered failed state. Oct 29 11:01:07 blue systemd[1]: docker.service failed.

2.2.2 groupadd 조치

[root@blue ~]# groupadd docker [root@blue ~]# usermod -aG docker $(whoami)

2.2.3 오류 : SELinux is not supported with the overlay2 graph driver on this kernel. Either boot into a newer kernel or disable se...nabled=false)

Oct 29 11:03:19 blue systemd[1]: Starting Docker Application Container Engine... Oct 29 11:03:19 blue dockerd-current[4738]: time="2018-10-29T11:03:19.099259681+09:00" level=info msg="libcontainerd: new containerd process, pid: 4761" Oct 29 11:03:20 blue dockerd-current[4738]: Error starting daemon: SELinux is not supported with the overlay2 graph driver on this kernel. Either boot into a newer kernel or disable se...nabled=false) Oct 29 11:03:20 blue systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE Oct 29 11:03:20 blue systemd[1]: Failed to start Docker Application Container Engine. Oct 29 11:03:20 blue systemd[1]: Unit docker.service entered failed state. Oct 29 11:03:20 blue systemd[1]: docker.service failed.

2.2.4 /etc/ sysconfig/docker 설정 변경 

OPTIONS='--selinux-enabled --log-driver=journald --signature-verification=false'  --->   OPTIONS='--selinux-enabled=false --log-driver=journald --signature-verification=false'

3. 실행 후 docker version 확인

[root@blue ~]# docker version Client:  Version:         1.13.1  API version:     1.26  Package version: docker-1.13.1-75.git8633870.el7.centos.x86_64  Go version:      go1.9.4  Git commit:      8633870/1.13.1  Built:           Fri Sep 28 19:45:08 2018  OS/Arch:         linux/amd64 Server:  Version:         1.13.1  API version:     1.26 (minimum version 1.12)  Package version: docker-1.13.1-75.git8633870.el7.centos.x86_64  Go version:      go1.9.4  Git commit:      8633870/1.13.1  Built:           Fri Sep 28 19:45:08 2018  OS/Arch:         linux/amd64  Experimental:    false