这几天折腾搭建git服务器，选择了比较流行的gitlab，一开始就直奔一键安装脚本去了，连gitlab主页都没去看看。用的gitlab-installer，centos6.5，各种错误，各种依赖关系，还有各种无法连接，两天了都没成功。无奈手动配置，没有接触过ruby on rails，照着网上的文档抄，忍受着龟速的epel源，花了几个小时，终于配置成功。把一个项目托管上去，终于松口气，想着下班回去在配一遍，总结下过程。然而，下班回来一搜gitlab，随手打开gitlab主页，我决定暂时放弃这个想法。

因为我发现，居！然！有！官！方！的！rpm！安！装！包！

omnibus方式部署gitlab

Download the Omnibus package and install everything

curl -O https://downloads-packages.s3.amazonaws.com/centos-6.6/gitlab-7.6.2_omnibus.5.3.0.ci.1-1.el6.x86_64.rpm
sudo yum install openssh-server
sudo yum install postfix
sudo yum install cronie
sudo service postfix start
sudo chkconfig postfix on
sudo rpm -i gitlab-7.6.2_omnibus.5.3.0.ci.1-1.el6.x86_64.rpm


Configure and start GitLab

sudo gitlab-ctl reconfigure
sudo lokkit -s http -s ssh


Browse to the hostname and login 
Username: root 
Password: 5iveL!fe

步骤很简单，主要就是下载速度太慢，好在有个美国的vps，先下载到vps上，然后从vps下载，速度稍好，顺便用百度网盘离线下载了一份。

配置开放用户注册

默认是不允许注册的，如果需要开放注册，可以编辑 /etc/gitlab/gitlab.rb，查找signup_enabled ，值改为true，并取消注释，之后重新配置gitlab。

sudo gitlab-ctl reconfigure

 遇到的问题

内存不足

512M的虚拟机，打开gitlab页面巨卡，简直无法忍受，查看内存使用情况：

[root@localhost ~]# free -m 
             total       used       free     shared    buffers     cached
Mem:           482        476          6          0          0         13
-/+ buffers/cache:        462         20
Swap:         1023        260        763

查看gitlab官网的硬件需求。

Memory

You need at least 2GB of addressable memory (RAM + swap) to install and use GitLab! With less memory GitLab will give strange errors during the reconfigure run and 500 errors during usage.

• 512MB RAM + 1.5GB of swap is the absolute minimum but we strongly advise against this amount of memory. See the unicorn worker section below for more advise.
• 1GB RAM + 1GB swap supports up to 100 users
• 2GB RAM is the recommended memory size and supports up to 500 users
• 4GB RAM supports up to 2,000 users
• 8GB RAM supports up to 5,000 users
• 16GB RAM supports up to 10,000 users
• 32GB RAM supports up to 20,000 users
• 64GB RAM supports up to 40,000 users

Notice: The 25 workers of Sidekiq will show up as separate processes in your process overview (such as top or htop) but they share the same RAM allocation since Sidekiq is a multithreaded application.

把虚拟机内存调到1G，果然好了，页面打开很流畅。

[root@localhost gitlab]# free -m
             total       used       free     shared    buffers     cached
Mem:           988        906         82          0         23        114
-/+ buffers/cache:        768        220
Swap:         1023          0       1023

但是之前手动配置的也是512的虚拟机，打开一样很流畅，看来手动配置还是有意义的。

参考资料

[1]. gitlab下载页. https://about.gitlab.com/downloads/
[2]. gitlab硬件需求. http://doc.gitlab.com/ce/install/requirements.html