CentOS升级openSSH9.8

1.上传openSSH安装包

openssh-9.8p1-1.el7.x86_64.rpm
openssh-clients-9.8p1-1.el7.x86_64.rpm
openssh-debuginfo-9.8p1-1.el7.x86_64.rpm
openssh-server-9.8p1-1.el7.x86_64.rpm

2.删除原版本（若原先不是yum安装的也可直接安装新的）

yum remove openssh*

3.安装新版本

rpm -Uvh openssh-*.rpm

4.查看最新版本

rpm -qa|grep opensshopenssh-clients-9.8p1-1.el7.x86_64
openssh-9.8p1-1.el7.x86_64
openssh-debuginfo-9.8p1-1.el7.x86_64
openssh-server-9.8p1-1.el7.x86_64

5.重启ssh

systemctl restart sshd.service

6.查看ssh状态

systemctl status sshd.service

7.若重启失败，报类似的错

Permissions 0640 for ‘/etc/ssh/ssh_host_rsa_key’ are too open.

修改权限

chmod 0600 /etc/ssh/ssh_host_rsa_key
chmod 0600 /etc/ssh/ssh_host_ecdsa_key
chmod 0600 /etc/ssh/ssh_host_ed25519_key

8.再次重启并新开窗口，看是否可以正常连接，并查看openSSH版本

[root@localhost ssh]# ssh -V
OpenSSH_9.8p1, OpenSSL 3.0.14 4 Jun 2024