git ssh: connect to host github.com port 22: Connection refused

报错如下

[root@test1 learngit]# git push -u origin master

ssh: connect to host github.com port 22: Connection refused

fatal: The remote end hung up unexpectedly

公钥已经传到github上的话，分析原因为username没有指定对

cat /root/.gitconfig

[user]

    name = test

    email = [e-mail]

cat /root/.ssh/config

Host github.com

User test

Hostname ssh.github.com

PreferredAuthentications publickey

IdentityFile ~/.ssh/id_rsa

Port 443

我的问题就是上面两个用户没有一样，改为一样后，测试成功

[root@test1 ~]# ssh -T [e-mail]

The authenticity of host '[ssh.github.com]:443 ([192.30.253.123]:443)' can't be established.

RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '[ssh.github.com]:443,[192.30.253.123]:443' (RSA) to the list of known hosts.