wget --content-disposition https://packages.gitlab.com/gitlab/gitlab-ce/packages/ol/7/gitlab-ce-12.6.7-ce.0.el7.x86_64.rpm/download.rpm

rpm -ivh gitlab-ce-12.6.7-ce.0.el7.x86_64.rpm

vim /etc/gitlab/gitlab.rb 使external_url指向自己的ip

gitlab-ctl reconfigure

gitlab-ctl start

root 默认密码：cat /etc/gitlab/initial_root_password