Recently, i found   i can't change ssh port on 6.4.16 bookworm (Onecloud)  cli version(https://github.com/armbian-delta/os/releases/download/23.8.0-trunk.2/Armbian_23.8.0-trunk.2_Onecloud_bookworm_edge_6.4.16.img.xz#onecloud)

   i changed the `/etc/ssh/sshd_config`    add the `Port 10086` .and then i restart the system, It still not working, ssh port only work on `22`

  but at the same time, i found the other thing  `KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1` i added is working.

   So, i check if selinux is disabled, the sestatus says it's disabled.

and  check the  sshd status...it stills on port 22,  no 10086

`root@onecloud:~# service sshd status
● ssh.service - OpenBSD Secure Shell server
     Loaded: loaded (/lib/systemd/system/ssh.service; enabled; preset: enabled)
     Active: active (running) since Thu 2023-10-12 14:15:38 CST; 3s ago
TriggeredBy: ● ssh.socket
       Docs: man:sshd(8)
             man:sshd_config(5)
    Process: 7609 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=0/SUCCESS)
   Main PID: 7610 (sshd)
      Tasks: 1 (limit: 2190)
     Memory: 1.0M
        CPU: 305ms
     CGroup: /system.slice/ssh.service
             └─7610 "sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups"

Oct 12 14:15:38 onecloud systemd[1]: Starting ssh.service - OpenBSD Secure Shel>
Oct 12 14:15:38 onecloud sshd[7610]: Server listening on :: port 22.
Oct 12 14:15:38 onecloud systemd[1]: Started ssh.service - OpenBSD Secure Shell`

So i checked `netstat -atunlp | grep sshd` there is only  22..

`
tcp6       0      0 192.168.1.112:22        xxx:20158     ESTABLISHED 3147/sshd: root@pts
tcp6       0    144 192.168.1.112:22       xxx:22320     ESTABLISHED 3514/sshd: root@pts
`

iptables nothing on it.

`Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination`

So, it may be a bug, sshd can't read configuration to open a new port?

It shutdown about every 40 minutes.

How to solve this problem?

Thanks!

journalctl.log kern.log armbian-hardware-monitor.log