openssh在线升级

升级openssh到9.8p1的步骤。

yum install gcc pam-devel zlib-devel openssl-devel telnet-server xinetd -y
service xinetd start
service telnet.socket start
NEW_USER=funi
sudo adduser $NEW_USER
sudo echo "$NEW_USER ALL=(ALL) ALL" >> /etc/sudoers
passwd funi

cp -a /etc/ssh/sshd_config /etc/ssh/sshd_config_bak
mkdir /root/update9.8/ && cd /root/update9.8
上传openssh9.8p1.tar
tar -xvf openssh9.8p1.tar && cd /root/update9.8/x86_64
yum remove openssh*
rpm -Uvh openssh-*.rpm
chmod 600 /etc/ssh/ssh_host_rsa_key
chmod 600 /etc/ssh/ssh_host_ecdsa_key
chmod 600 /etc/ssh/ssh_host_ed25519_key
systemctl restart sshd && ssh -V

yum remove xinetd telnet-server -y