Solution:
1. Uninstall and reinstall
[root@cent ~]# yum -y remove openssh-server [root@cent ~]# yum -y install openssh-server
2. Generate key (optional)
[root@cent ~]# sshd-keygen
3 , Modify the sshd_config configuration file
[root@cent ~]# vim /etc/ssh/sshd_config # 添加以下内容至文件末尾处 :wq PubkeyAuthentication yes
4. Restart sshd
[root@cent ~]# systemctl restart sshd.service
Recommended related tutorials: centos tutorial
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