## 安装openssh-server ``` yum install -y openssl openssh-server ``` ## 生成公钥私钥 ``` ssh-keygen -t rsa ``` ## 重新生成主机密钥文件 ``` ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key ```