SSH配置与修改

ssh文件路径：/etc/ssh/
ssh的日志文件：/var/log/secure
端口修改：./sshd_config
服务启停: service sshd start/stop/restart

git以ssh方式clone

ssh key 生成可参考
http://wiki.jenkins-ci.org/display/JENKINS/Git+Plugin
http://blog.csdn.net/wangmuming/article/details/22925873

git clone ssh://git@gitlab.xxxxxx.cn:6911/project/projectName.git

当ssh端口变动时，主要有两处变化：
1、增加了 ssh://
2、指定了ssh服务的端口 6911

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打通服务器间的公私钥免密登录

必须的要求：
SSH doesn’t like it if your home or ~/.ssh directories have group write permissions. Your home directory should be writable only by you, ~/.ssh should be 700, and authorized_keys should be 600.
You can also get around this by adding StrictModes off to your ssh_config file, but I’d advise against it - fixing permissions is the way to go.
即有几处是需要处理（注意）的：
1、用户家目录组用户权限不能有写（W）权限，如/home/oper目录，可以是755.
2、~/.ssh 目录权限应该是700，~/.ssh/authorized_keys 文件权限应该是600.