sshd出现了周期性连不上的情况,查看日志如下:
/var/log/secure:
1sshd[3170]: Server listening on 0.0.0.0 port 22. 2sshd[3170]: Received signal 15; terminating.
/var/log/messages:
1systemd: sshd.service holdoff time over, scheduling restart. 2systemd: Starting OpenSSH server daemon... 3systemd: sshd.service start operation timed out. Terminating. 4systemd: Failed to start OpenSSH server daemon. 5systemd: Unit sshd.service entered failed state. 6systemd: sshd.service failed. 7systemd: sshd.service holdoff time over, scheduling restart. 8systemd: Starting OpenSSH server daemon... 9systemd: sshd.service start operation timed out. Terminating. 10systemd: Failed to start OpenSSH server daemon. 11systemd: Unit sshd.service entered failed state. 12systemd: sshd.service failed. 13systemd: sshd.service holdoff time over, scheduling restart. 14systemd: Starting OpenSSH server daemon... 15systemd: sshd.service start operation timed out. Terminating. 16systemd: Failed to start OpenSSH server daemon. 17systemd: Unit sshd.service entered failed state. 18systemd: sshd.service failed.
journalctl -xe:
1sshd.service start operation timed out. Terminating. 2sshd[8425]: Received signal 15; terminating. 3systemd[1]: Failed to start OpenSSH server daemon. 4-- Subject: Unit sshd.service has failed 5-- Defined-By: systemd 6-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel 7-- 8-- Unit sshd.service has failed. 9-- 10-- The result is failed. 11systemd[1]: Unit sshd.service entered failed state. 12systemd[1]: sshd.service failed. 13polkitd[457]: Unregistered Authentication Agent for unix-process:8419:67059806 (system bus name :1.2658, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)
以上就是报错信息,完全找不到原因在哪里, sshd -t 也没有任何输出
无奈只能选择重装opendssh
1yum remove openssh 2yum install openssh openssh-server openssh-clients 3service sshd start 4(systemctl start sshd)
重装之后就好了,没有再出现进程被杀死的情况