請教下centos7啟動docker異常?
啟動docker
[[email protected] ~]# service docker start
Starting docker (via systemctl):

Job for docker.service failed. See 'systemctl status docker.service' and 'journalctl -xn' for details.

按提示敲systemctl status docker.service
[[email protected] ~]# systemctl status docker.service
docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled)
Active: failed (Result: timeout) since Wed 2015-10-14 12:22:57 HKT; 20h ago
Docs: https://docs.docker.com
Main PID: 15618
CGroup: /system.slice/docker.service

Oct 14 12:21:27 centos7-linux--wd.shared systemd[1]: Starting Docker Application Container Engine...
Oct 14 12:21:28 centos7-linux--wd.shared docker[15618]: time="2015-10-14T12:21:28.122825966+08:00" level=info msg="[graphdriver] using prior sto...pper\""
Oct 14 12:21:28 centos7-linux--wd.shared docker[15618]: time="2015-10-14T12:21:28.126233627+08:00" level=info msg="Option DefaultDriver: bridge"
Oct 14 12:21:28 centos7-linux--wd.shared docker[15618]: time="2015-10-14T12:21:28.126274740+08:00" level=info msg="Option DefaultNetwork: bridge"
Oct 14 12:21:28 centos7-linux--wd.shared docker[15618]: time="2015-10-14T12:21:28.130986465+08:00" level=warning msg="Running modprobe bridge nf...atus 1"
Oct 14 12:22:57 centos7-linux--wd.shared systemd[1]: docker.service operation timed out. Terminating.
Oct 14 12:22:57 centos7-linux--wd.shared systemd[1]: Failed to start Docker Application Container Engine.
Oct 14 12:22:57 centos7-linux--wd.shared systemd[1]: Unit docker.service entered failed state.
Hint: Some lines were ellipsized, use -l to show in full.

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2015-10-15 新增評論
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tuxknight

贊同來自: OhMyDock    
提供的資訊比較少，，你自己看看這個case吧。https://github.com/docker/docker/issues/15498    
2015-10-15
1
0

劉鈞

贊同來自: OhMyDock    
可能和Selinux衝突，禁用Selinux一下試試。
2015-10-15
1
0

OhMyDock - docker白    
記錄下解決方法，感謝@劉鈞 。

檢視SELinux狀態：
1、/usr/sbin/sestatus -v ##如果SELinux status引數為enabled即為開啟狀態
SELinux status: enabled
2、getenforce ##也可以用這個命令檢查
關閉SELinux：
1、臨時關閉（不用重啟機器）：
setenforce 0 ##設定SELinux 成為permissive模式
##setenforce 1 設定SELinux 成為enforcing模式
2、修改配置檔案需要重啟機器：
修改/etc/selinux/config 檔案
將SELINUX=enforcing改為SELINUX=disabled
重啟機器即可

參考：http://bguncle.blog.51cto.com/3184079/957315    
2015-10-16
0
0

OhMyDock - docker白    
雖然關閉了selinux，但是貌似執行docker 還是會出現下面錯誤：

[[email protected] init.d]# docker images
Get http:///var/run/docker.sock/v1.20/images/json: dial unix /var/run/docker.sock: no such file or directory.
* Are you trying to connect to a TLS-enabled daemon without TLS?
* Is your docker daemon up and running?

重啟docker服務，就正常了。