Resolved Server blocking all ports, can only connect to server directly

[DaarGaJeDan]

Hi Guys,

My plesk server suddently blocking all ports. i cant find any thing in the logs kern, syslog, fail2ban. I updated everything. And it happened after a licence renewal.
Its always on xx:40 minutes (after 5 minutes i get a monitoring allert)

It started on 07:40 then 08:40 and so on. today it was on 12.40.

Does any one have a suggestion?

My server:
OS:
Ubuntu 20.04.3 LTS

Product:
Plesk Obsidian, Version 18.0.41, last updated on Jan 18, 2022 11:13 PM

 

[DaarGaJeDan]

Just did a repair

# plesk repair all -v

After restart everything runs but no website or mail can be reached.

 

[DaarGaJeDan]

After a new reboot i the websites and mail came online.....

 

[DaarGaJeDan]

After 20 hours everything looks fine..... Still dont know what it was.

 

[DaarGaJeDan]

still the server blocks all ports.....

24 hours after last reboot

 

[DaarGaJeDan]

I found in the kern.log
Jan 21 02:34:12 s2 named[720]: no longer listening on <Server IP>#53

and
Jan 21 02:35:01 s2 CRON[129292]: (root) CMD (/opt/psa/bin/sw-engine-pleskrun /opt/psa/admin/plib/DailyMaintainance/task-script.php StoreOutgoingMessagesStatistics >/dev/null 2>&1)

Around the time off the blocking.

 

[DaarGaJeDan]

New thread:

Resolved - Server unreachable, 24 hours after reboot

Hi Guys, My plesk server suddently unreachable on all ports. The server is up to date. It happened after a licence renewal. Looks like it happends 24 hours after a reboot. What i tried: # plesk repair all -v After restart everything runs but no website or mail can be reached. After a new...

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