ssh 命令解析

安装和配置参考：免密配置 本文主要介绍 ssh 的功能使用

usage: ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
           [-D [bind_address:]port] [-E log_file] [-e escape_char]
           [-F configfile] [-I pkcs11] [-i identity_file]
           [-J [user@]host[:port]] [-L address] [-l login_name] [-m mac_spec]
           [-O ctl_cmd] [-o option] [-p port] [-Q query_option] [-R address]
           [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]]
           [user@]hostname [command]

登录

ssh -p 22 {{user}}@{{host-ip}}

ssh -p 22 test@test-n1

密钥登录

信息提示大意是密钥文件的权限太过开放了 修改下权限只能自己访问就可以了

FAQ

1. no hostkeys available— exiting root权限下，重新生成密钥：

   ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
    ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
   
   chmod 600 /etc/ssh/ssh_host_dsa_key
   chmod 600 /etc/ssh/ssh_host_rsa_key