解决GitLab提交MergeRequest时，提示502 GitLab is not responding.的问题

最近使用GitLab提交MergeRequest时，提示502 GitLab is not responding。使用gitlab-ctl tail查看错误信息如下：

2016/06/28 11:50:50 [error] 6565#0: *1 upstream prematurely closed connection while reading response header from upstream, client: 10.xx.xx.xx, server: 10.xx.xx.xx, request: "GET /xxx/webopinion/merge_requests/new？utf8=%E2%9C%93&merge_request%5Bsource_project_id%5D=6&merge_request%5Bsource_branch%5D=develop&merge_request%5Btarget_project_id%5D=4&merge_request%5Btarget_branch%5D=develop HTTP/1.1", upstream: "http://unix:/home/gitlab/gitlab-rails/tmp/sockets/gitlab.socket:/xxx/webopinion/merge_requests/new？utf8=%E2%9C%93&merge_request%5Bsource_project_id%5D=6&merge_request%5Bsource_branch%5D=develop&merge_request%5Btarget_project_id%5D=4&merge_request%5Btarget_branch%5D=develop", host: "10.xx.xx.xx", referrer: "http://10.xx.xx.xx/xxx/webopinion/merge_requests/new"

原因及解决方案

上面的问题是由于unicron的超时时间设置偏低，再加上我用的服务器性能不好导致的。解决方案：修改文件{GIT_LAB}/gitlab-rails/etc/unicorn.rb，将其中的timeout修改的高一些，比如90，然后gitlab-ctl restart重启即可。更多GitLab相关教程见以下内容：Ubuntu 14.04下安装GitLab指南 http://www.linuxidc.com/Linux/2015-12/126876.htm如何在Ubuntu Server 14.04下安装Gitlab中文版 http://www.linuxidc.com/Linux/2015-12/126875.htmCentOS源码安装GitLab汉化版 http://www.linuxidc.com/Linux/2015-10/124648.htm在 Ubuntu 12.04 上安装 GitLab http://www.linuxidc.com/Linux/2012-12/75249.htmGitLab 5.3 升级注意事项 http://www.linuxidc.com/Linux/2013-06/86473.htm在 CentOS 上部署 GitLab （自托管的Git项目仓库） http://www.linuxidc.com/Linux/2013-06/85754.htm在RHEL6/CentOS6/ScientificLinux6上安装GitLab 6.0.2 http://www.linuxidc.com/Linux/2014-03/97831.htmCentOS 6.5安装GitLab教程及相关问题解决 http://www.linuxidc.com/Linux/2014-05/101526.htm升级GitLab到8.2.0 http://www.linuxidc.com/Linux/2015-12/126220.htmGitLab 的详细介绍：请点这里
GitLab 的下载地址：请点这里 本文永久更新链接地址