[systemd-devel] Socket is dying, how to automatically restart it?

[George McCollister]

On 04/20/2013 08:04 AM, Koen Kooi wrote:
> Op 18 apr. 2013, om 19:18 heeft George McCollister<george.mccollister at gmail.com>  het volgende geschreven:
>
>> On 04/10/2013 12:03 PM, Koen Kooi wrote:
>>> Hi,
>>>
>>> I have a bit of a heisenbug where dropbear.socket will just die and needs a systemctl restart dropbear.socket. I can't tell why it's dying, just that it does within 3 days of uptime. After restarting it it seems to be rock solid again for at least some weeks.
>>>
>>> The real way to fix this is to find out why it dies, but till someone figures that out I'm looking to a way to automatically restart the socket when it fails, kinda like Restart=Always for services. Is such a thing possible? This is with 195 and 196, haven't tried 201 yet.
>> I'm having exactly the same problem with sshd.socket (openssh) with systemd 197. I've done a netstat after it dies (just says dead no useful information) and port 22 still shows up under listening. systemctl start sshd.socket fixes the problem. I just upgraded to systemd 201 so I'll let you know if the problem shows up again. The problem happens intermittently so its been a bit elusive.
> It is indeed elusive, it hasn't happened to me in the past week, so progress is slow on this.
>
> regards,
>
> Koen
This is really strange but I think I just accidentally found a way to 
reproduce the problem.
1) Reboot
2) Verify ssh works
3) login as root and run: systemctl --system daemon-reload

Can't ssh anymore.

If I do 'systemctl start sshd.socket' I can ssh again and doing 
'systemctl --system daemon-reload' again doesn't seem to break it.