Ubuntu 14.04下安装GitLab
0、硬件要求官方要求：http://doc.gitlab.com/ce/install/requirements.html
CPU
[*]1 core works supports up to 100 users but the application can be a bit slower due to having all workers and background jobs running on the same core
[*]2 cores is the recommended number of cores and supports up to 500 users
[*]4 cores supports up to 2,000 users
[*]8 cores supports up to 5,000 users
[*]16 cores supports up to 10,000 users
[*]32 cores supports up to 20,000 users
[*]64 cores supports up to 40,000 users
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 advice.
[*]1GB RAM + 1GB swap supports up to 100 users but it will be very slow
[*]2GB RAM is the recommended memory>
[*]4GB RAM supports up to 1,000 users
[*]8GB RAM supports up to 2,000 users
[*]16GB RAM supports up to 4,000 users
[*]32GB RAM supports up to 8,000 users
[*]64GB RAM supports up to 16,000 users
[*]128GB RAM supports up to 32,000 users
实验结果：
A、单核1G的阿里云主机，经常提示内存不足，前端表现为500错误。
B、本地虚拟机单核1G，经常卡顿，一个页面要加载很久才能出来。
C、本地虚拟机双核2G，完美运行无卡顿。
默认账号：
root
5iveL!fe
1、官方安装方法
https://about.gitlab.com/downloads/#ubuntu1404
2、手工下载安装
https://about.gitlab.com/downloads/archives/
wget -c https://downloads-packages.s3.amazonaws.com/ubuntu-14.04/gitlab-ce_7.10.4~omnibus-1_amd64.deb
sudo dpkg -i gitlab-ce_7.10.5-omnibus-1_amd64.deb
sudo mkdir -p /etc/gitlab
sudo touch /etc/gitlab/gitlab.rb
sudo chmod 600 /etc/gitlab/gitlab.rb
sudo vi /etc/gitlab/gitlab.rb
sudo gitlab-ctl reconfigure
#80则可以不用写端口号
external_url 'http://git.xxx.com:8080'
修改上述配置
再次执行：sudo gitlab-ctl reconfigure
使用：
sudo gitlab-ctl status 查看状态
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