阿里云服务器ubuntu ssh断线及配置免密码登陆

创建文件，写入内容

vi ~/.ssh/config
#Added lines to fix.
Host *
IPQoS lowdelay throughput

赋权

chmod 644 ~/.ssh/config

最好在sshd文件中加入

ClientAliveInterval 30
ClientAliveCountMax 86400

免密登录权限给予

chmod 755 ~/.ssh/  
chmod 600 ~/.ssh/id_rsa ~/.ssh/id_rsa.pub   
chmod 644 ~/.ssh/known_hosts