密钥指纹：CentOS7 安装docker 解决启动不了的问题

[root@test ~]# yum update
[root@test ~]# yum install docker
 
[root@test ~]# 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.
[root@test ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
  Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
  Active: inactive (dead) (Result: exit-code) since 四 2016-03-10 13:01:21 CST; 7s ago
   Docs: http://docs.docker.com
 Process: 29939 ExecStart=/usr/bin/docker daemon $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=2)
 Main PID: 29939 (code=exited, status=2)
  CGroup: /system.slice/docker.service
      └─29970 mkfs.ext4 -E nodiscard,lazy_itable_init=0,lazy_journal_ini...

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

[root@apptest ~]# yum remove docker
[root@apptest ~]# yum remove docker-selinux
 
[root@test yum.repos.d]# vi /etc/yum.repos.d/docker.repo
 
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
 
[root@test yum.repos.d]# yum install docker-engine
 

[root@apptest ~]# service docker start
Redirecting to /bin/systemctl start docker.service
[root@apptest ~]# docker images
REPOSITORY     TAG         IMAGE ID      CREATED       SIZE
 
[root@test yum.repos.d]# docker version
Client:
 Version:   1.10.2
 API version: 1.22
 Go version:  go1.5.3
 Git commit:  c3959b1
 Built:    Mon Feb 22 16:16:33 2016
 OS/Arch:   linux/amd64
 
Server:
 Version:   1.10.2
 API version: 1.22
 Go version:  go1.5.3
 Git commit:  c3959b1
 Built:    Mon Feb 22 16:16:33 2016
 OS/Arch:   linux/amd64
[root@test yum.repos.d]# 

[root@apptest ~]# curl -fsSL https://get.docker.com/ | sh
+ sh -c 'sleep 3; yum -y -q install docker-engine'
警告：/var/cache/yum/x86_64/7/docker-main-repo/packages/docker-engine-selinux-1.10.2-1.el7.centos.noarch.rpm: 头V4 RSA/SHA512 Signature, 密钥 ID 2c52609d: NOKEY
docker-engine-selinux-1.10.2-1.el7.centos.noarch.rpm 的公钥尚未安装
导入 GPG key 0x2C52609D:
 用户ID   : "Docker Release Tool (releasedocker) <docker@docker.com>"
 指纹    : 5811 8e89 f3a9 1289 7c07 0adb f762 2157 2c52 609d
 来自    : https://yum.dockerproject.org/gpg
setsebool: SELinux is disabled.
+ sh -c 'docker version'
Client:
 Version:   1.10.2
 API version: 1.22
 Go version:  go1.5.3
 Git commit:  c3959b1
 Built:    Mon Feb 22 16:16:33 2016
 OS/Arch:   linux/amd64
Cannot connect to the Docker daemon. Is the docker daemon running on this host?
 
If you would like to use Docker as a non-root user, you should now consider
adding your user to the "docker" group with something like:
 
 sudo usermod -aG docker your-user
 
Remember that you will have to log out and back in for this to take effect!
 
[root@apptest ~]# 
 
[root@apptest ~]# service docker start
Redirecting to /bin/systemctl start docker.service
[root@apptest ~]# docker images
REPOSITORY     TAG         IMAGE ID      CREATED       SIZE
[root@apptest ~]#