在~/.ssh 添加config文件

github

Host github.com
HostName github.com
User xxx
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa.github

github:
ssh-keygen -t rsa -f ~/.ssh/id_rsa.github -C "xxx@xx.com"

gitlab:
ssh-keygen -t rsa -C "xxx@xxx.com"

ssh-add ~/.ssh/id_rsa.github
ssh-add ~/.ssh/id_rsa

id_rsa.github.pub里面的内容粘贴到https://github.com/settings/keys 里面
同样id_rsa.pub粘贴到gitlab的keys里面

ssh -T git@github.com

ssh -T git@git.xxx.com

在 ~/.gitconfig里面设置gitlab提交的用户名密码
[user]
name = xxxx
email = xxx@xxx.com
[core]
autocrlf = input

或者取消
git config --global --unset user.name 取消全局设置
git config --global --unset user.email 取消全局设置