【Linux】ssh config管理多个远程连接

1.配置文件说明

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# 用户配置文件
$ ~/.ssh/config
# 系统配置文件
$ /etc/ssh/ssh_config
# 本地生成公匙
$ ssh-keygen -t rsa
# 将公匙拷贝到服务器上
ssh-copy-id ~/.ssh/id_rsa.pub xinchen@192.168.0.222
scp ~/.ssh/id_rsa.pub xinchen@192.168.0.222:～/.ssh/authorized_keys

2.配置文件格式

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Host firsthost
    # 主机地址
    HostName deepzz.com
    # 用户名
    User xinchen
    # 认证文件                   
    IdentityFile ~/.ssh/id_ecdsa
    # 指定端口       
    Port 22                      
    SSH_OPTIONS_1 custom_value
    SSH_OPTIONS_2 custom_value
    SSH_OPTIONS_3 custom_value

Host secondhost
    ANOTHER_OPTION custom_value

Host *host
    ANOTHER_OPTION custom_value

Host *
    CHANGE_DEFAULT custom_value
    # 可将用户名全放在这
    # User xinchen

3.使用

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# 配合sshpass
sshpass -f $passfile ssh $firsthost