我的jenkins是docker部署的
需要在jenkins的容器里 执行以下命令访问git上的仓库地址，把git的主机添加到/root/.ssh/known_hosts(执行命令前known_hosts这个文件是不存在的，执行后就有了)
root@80b05f3c5097:~/.ssh# git ls-remote -h git@gitee.com:XXXXX/autotest.git HEAD
The authenticity of host 'gitee.com (212.64.63.215)' can't be established.
ECDSA key fingerprint is SHA256:FQGC9Kn/eye1W8icdBgrQp+KkGYoFgbVr17bmjey0Wc.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'gitee.com,212.64.63.215' (ECDSA) to the list of known hosts.
root@80b05f3c5097:~/.ssh#
root@80b05f3c5097:~/.ssh#
root@80b05f3c5097:~/.ssh# pwd
/root/.ssh
root@80b05f3c5097:~/.ssh# ls -al
total 12
drwx------ 2 root root 57 Oct 25 03:55 .
drwx------ 1 root root 71 Sep 28 04:49 ..
-rw------- 1 root root 2602 Oct 25 02:42 id_rsa
-rw-r--r-- 1 root root 571 Oct 25 02:42 id_rsa.pub
-rw-r--r-- 1 root root 444 Oct 25 03:55 known_hosts
然后jenkins就不报错了
标签：No,com,连不上,gitee,ssh,key,known,root From： https://www.cnblogs.com/yitian395/p/16824436.html