1、查看服务器是否配置过

[root@kingbal-ecs-7612 ~]# cd .ssh/
[root@kingbal-ecs-7612 .ssh]# ls
authorized_keys  id_ed25519  id_ed25519.pub  id_rsa  id_rsa.pub

2、创建密钥

$ ssh-keygen -t rsa -C 'kingbal@kingbal.com' # -C 后写你的邮箱 一路回车

3、复制密钥

[root@kingbal-ecs-7612 .ssh]# cat id_rsa.pub 
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQDFjNV+MfkPLRCvuSKYNTLhZijufHhCqrVuIRjL3rfbEIuyvav+lEmWLg/a+NrP12LpgMvrxjOF/ltUHSus0ZrBTgIPd8JW+sQoSWmua8NA/YO8fa+5POwxEQZo0o1M97lht4fAm6wylBdzt1kz+qx5o/7VLXKWZSxACbTf6z0bHl1xAtNFE5w6you9pozh67uPGbKLwqzSLj9kJ/SA1ZINlBhQzMM62NY4x9+WBeQXyMbCHJN1UOfsJcTq0iJbv6pDrc3cR3eJRujdcjItfgA9tbD67zjBn/TbVfprSvPg6pvsrm4gHcmsuNveQV1Y6neYGNaNr9FXpDo8wcwmQIf84NvcSpaacADkir0OhI7bW1rdBLb95TXcIm9sKCAx0psqmrIlS+FVfIlr8nA2/HrjiCXeAxHhXCI+7bKgnSYxCqs/SNJcXdMdYI08teAPv5PUZqAKwme2B3X7VJFk0Y3.....

4、添加密钥

打开gitlab,找到Profile Settings-->SSH Keys--->Add SSH Key,并把上一步中复制的内容粘贴到Key所对应的文本框，在Title对应的文本框中给这个sshkey设置一个名字，点击Add key按钮

 

好了这样就配置好了