gitlab-runner真是个好东西，尤其是shell runner,喜欢的不要不要的，什么脏活累活，自动化任务都可以交给它。
随着现在云计算普及，5-6个人的小团队都会有好几台后台服务器，Linux上那套用户权限管理感觉太多余了，直接root操作多爽。
鉴于官网手册Install GitLab Runner manually on GNU/Linux 还是用非gitlab-runner用户安装，导致写shell时会额外增加权限调整的工作量。在此专门写个小文说明下：
安装runner
# Linux x86-64
sudo curl -L --output /usr/local/bin/gitlab-runner https://gitlab-runner-downloads.s3.amazonaws.com/latest/binaries/gitlab-runner-linux-amd64
sudo chmod +x /usr/local/bin/gitlab-runner
sudo gitlab-runner install --user=root --working-directory=/home/gitlab-runner # 官方文档还是user=gitlab-runner
sudo gitlab-runner start
注册runner
step1 在gitlab上找到注册runner页面
例如:http://gitlab.lingxi.co/admin/runners,记录下url和token
gitlab-register-runner
step2 在后台服务器上注册Runner
执行sudo gitlab-runner register命令
untime platform arch=amd64 os=linux pid=30202 revision=1f513601 version=11.10.1
Running in system-mode.
Please enter the gitlab-ci coordinator URL (e.g. https://gitlab.com/):
http://gitlab.lingxi.co/
Please enter the gitlab-ci token for this runner:
MbXYws71x3X2isnQdE_- # 次数输入token
Please enter the gitlab-ci description for this runner:
[ops2]: shell runner test
Please enter the gitlab-ci tags for this runner (comma separated):
test
Registering runner... succeeded runner=MbXYws71
Please enter the executor: docker-ssh+machine, kubernetes, docker-ssh, parallels, ssh, virtualbox, docker+machine, docker, shell:
shell # executor类型为shell
Runner registered successfully. Feel free to start it, but if it's running already the config should be automatically reloaded!
执行步骤参见Registering Runners
然后就可以在gitlab页面上可以看到注册状态了
gitlab-register-runner-status
step2 修改runner参数，比如并发数等
执行ps -ef|grep gitlab 查看运行状态
root 24171 1 0 11:33 ? 00:00:01 /usr/lib/gitlab-runner/gitlab-runner run --working-directory /home/gitlab-runner --config /etc/gitlab-runner/config.toml --service gitlab-runner --syslog --user root
执行vim /etc/gitlab-runner/config.toml,可以修改concurrent=3（默认为一个并发）
concurrent = 3
check_interval = 10
[session_server]
session_timeout = 1800
[[runners]]
name = "mg_ci_111"
url = "http://172.10.1.118/"
token = "Co1UmjA6zWzBmcLss4xx"
executor = "shell"
[runners.custom_build_dir]
[runners.cache]
[runners.cache.s3]
[runners.cache.gcs]
执行service gitlab-runner restart重启服务，就可以完成了整个部署