oepnssh版本升级# 本地安装openssh---参考网络文档 https://www.cnblogs.com/libruce/p/18961920 备份原有配置 cp /etc/ssh/sshd_config /etc/ssh/sshd_config.backup cp /etc/pam.d/sshd /etc/pam.d/sshd.backup cp /etc/pam.d/system-auth /etc/pam.d/system-auth.backup 安装 sudo yum localinstall -y open