gitlab 安装

sudo yum install curl openssh-server openssh-clients postfix cronie
sudo service postfix start
sudo chkconfig postfix on
sudo lokkit -s http -s ssh //centos6.7  需要启动ip6tables ，/etc/modprobe.d/ipv6-off.conf

注释掉下面2项

#options ipv6 disable=1
#alias ipv6 off

reboot 重启服务器  service ip6tables start 

curl -sS https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.rpm.sh | sudo bash
sudo yum install gitlab-ce
curl -LJO https://packages.gitlab.com/gitlab/gitlab-ce/packages/el/6/gitlab-ce-XXX.rpm/download
//可使用镜像下载
https://mirror.tuna.tsinghua.edu.cn/help/gitlab-ce/
rpm -i gitlab-ce-XXX.rpm
sudo gitlab-ctl reconfigure  、、启动服务
修改gitlab端口：
vim /var/opt/gitlab/nginx/conf/gitlab-http.conf   server: 8081 
生成公钥：
ssh-keygen -t rsa -C "admin@example.com"
cat /root/.ssh/id_rsa.pub