docker安裝常見問題

一、

環境信息：
                       [root@joinApp2 ~]# uname -r
3.10.0-123.9.3.el7.x86_64
[root@joinApp2 ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core）

症狀：

[root@joinApp2 ~]# 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@joinApp2 ~]# 
[root@joinApp2 ~]# 
[root@joinApp2 ~]# 
[root@joinApp2 ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: failed (Result: start-limit) since Thu 2016-02-25 17:26:11 CST; 16s ago
     Docs: 
                      http://docs.docker.com Process: 16384 ExecStart=/usr/bin/docker daemon $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=1/FAILURE)
 Main PID: 16384 (code=exited, status=1/FAILURE)

Feb 25 17:26:10 joinApp2 systemd[1]: Failed to start Docker Application Container Engine.
Feb 25 17:26:10 joinApp2 systemd[1]: Unit docker.service entered failed state.
Feb 25 17:26:10 joinApp2 systemd[1]: docker.service failed.
Feb 25 17:26:11 joinApp2 systemd[1]: docker.service holdoff time over, scheduling restart.
Feb 25 17:26:11 joinApp2 systemd[1]: start request repeated too quickly for docker.service
Feb 25 17:26:11 joinApp2 systemd[1]: Failed to start Docker Application Container Engine.
Feb 25 17:26:11 joinApp2 systemd[1]: Unit docker.service entered failed state.
Feb 25 17:26:11 joinApp2 systemd[1]: docker.service failed.

解決辦法：

（1）、

查看文件系統 /etc/docker/daemon.json 有沒有這個文件，沒有測建立它包括二級目錄 docker

在daemon.json文件中輸入如下內容:

 

{
                       
                      "storage-driver"
                      :
                       
                      "devicemapper"
                       
                      }

若是daemon.json
                      
                      文件包含格式不正確的JSON，
                      Docker將沒法啓動
                      。

（2）、執行了一下 curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://*******.m.daocloud.io 語句，而後 在這個文件中的/etc/docker/daemon.json 格式就變了{"registry-mirrors": ["http://****.m.daocloud.io"]，} 最後一個多了一個逗號，我猜想是這個shell語句的緣由，我把逗號去掉之後，程序能夠正常啓動。

（3）、vi /etc/sysconfig/selinux    把selinux後面的改成disabled，重啓一波機器，再重啓docker就能夠了

 

 

 

Docker 沒法啓動的問題：

https://my.oschina.net/u/1188877/blog/422405