https://www.cnblogs.com/straycats/p/7637373.html

https://www.jianshu.com/p/4111534b339f

openssl genrsa -des3 -out /etc/gitlab/ssl/git.rlsk.link.key 2048

openssl req -new -key /etc/gitlab/ssl/git.rlsk.link.key -out /etc/gitlab/ssl/git.rlsk.link.csr

cp -v /etc/gitlab/ssl/git.rlsk.link.{key,original}

openssl rsa -in /etc/gitlab/ssl/git.rlsk.link.original -out /etc/gitlab/ssl/git.rlsk.link.key

rm -v /etc/gitlab/ssl/git.rlsk.link.original

openssl x509 -req -days 1460 -in /etc/gitlab/ssl/git.rlsk.link.csr -signkey /etc/gitlab/ssl/git.rlsk.link.key -out /etc/gitlab/ssl/git.rlsk.link.crt

openssl x509 -req -days 1460 -in /etc/gitlab/ssl/git.rlsk.link.csr -signkey /etc/gitlab/ssl/git.rlsk.link.key -out /etc/gitlab/ssl/git.rlsk.link.crt

rm -v /etc/gitlab/ssl/git.rlsk.link.csr  

chmod 600 /etc/gitlab/ssl/git.rlsk.link.*

cp /etc/gitlab/ssl/git.rlsk.link.crt /etc/gitlab/trusted-certs/

sudo gitlab-ctl reconfigure

sudo gitlab-ctl restart