yum安装的Jenkins 配置文件默认位置/etc/sysconfig/jenkins
默认jenkins服务以jenkins用户运行，这时在jenkins执行maven脚本时可能会发生没有权限操作某个目录下的文件，覆盖文件等情况。例如可能会报下面的错误。
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-install-plugin:2.5.2:install (default-install) on project icps-parent: Failed to install artifact io.binghe:binghe-parent:pom:1.0.0-SNAPSHOT: /home/repository/io/binghe/binghe-parent/1.0.0-SNAPSHOT/binghe-parent-1.0.0-SNAPSHOT.pom (权限不够) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
可以让jenkins以root用户运行来解决这个问题
1.将jenkins账号分别加入到root组中
gpasswd -a jenkins root
2.修改/etc/sysconfig/jenkins文件中，
#user id to be invoked as (otherwise will run as root; not wise!)
JENKINS_USER=root
JENKINS_GROUP=root
可以修改为root权限运行
重启服务，搞定。
