把玩jenkins docker镜像遇到的volume权限问题
把玩jenkins docker镜像遇到的volume权限问题
这两天在玩jenkins,但是在挂在数据卷的时候遇到了权限问题,如下,
docker启动命令
docker run -d -v /root/jenkins:/var/jenkins_home -P --name jenkins-server jenkins
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这个命令看似没有什么问题,但容器就是启动不起来,执行docker ps -a,查看container,如下,
[root@esslog-shqs-6 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
274d92964edb jenkins "/bin/tini -- /usr/lo" 2 minutes ago Exited (1) 2 minutes ago jenkins-server
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接着执行docker logs jenkins-server查看container日志,如下
Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
touch: cannot touch ‘/var/jenkins_home/copy_reference_file.log’: Permission denied
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日志中出现了一个Permission denied错误,,以我目前的功力还不清楚是什么问题造成的,但是在谈谈Docker Volume 之权限管理和持续集成(Continuous integration)两篇博客中找到了答案,在执行docker run命令的时候增加一个-u参数,如下改进后的命令,
docker run -d -v /root/jenkins:/var/jenkins_home -u 0 -P --name jenkins-server jenkins
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这命令的意思是覆盖容器中内置的帐号,该用外部传入,这里传入0代表的是root帐号Id。这样再启动的时候就应该没问题了。
如果按照上面做还是出现Permission denied错误,那么可以检查一下selinux状态,开启的情况下会导致一些服务安装、使用不成功。
查看selinux状态,
[root@localhost ~]# sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: targeted
Current mode: enforcing
Mode from config file: enforcing
Policy MLS status: enabled
Policy deny_unknown status: allowed
Max kernel policy version: 28
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临时关闭,
[root@localhost ~]# setenforce 0
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永久关闭,可以修改配置文件/etc/selinux/config,将其中SELINUX设置为disabled,如下,
[root@localhost ~]# cat /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
#SELINUX=enforcing
SELINUX=disabled
# SELINUXTYPE= can take one of three two values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
[root@rdo ~]# sestatus
SELinux status: disabled
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参考文章:
http://www.cnblogs.com/99fu/p/6042744.html
https://yq.aliyun.com/articles/53990
http://blog.csdn.net/one_clouder/article/details/39224767
http://www.orcs.cc/post/6.html
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版权声明:本文为CSDN博主「MiniCTO」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/minicto/article/details/73539986