[Koha-devel] Background jobs quirks

[David Cook]

Hi all,

 

Have you seen something like the following in your worker-error.log?

 

20231018 07:44:06 instance-koha-worker-long_tasks: client (pid 3949888)
killed by signal 13, respawning

20231019 07:21:26 instance-koha-worker-long_tasks: client (pid 4082852)
killed by signal 13, respawning

 

I found some discussion in a thread
https://www.mail-archive.com/koha@lists.katipo.co.nz/msg30046.html

 

Signal 13 would be a SIGPIPE I believe. At first, I assumed it was the
connection between the background worker and RabbitMQ, but based off the
RabbitMQ logs[1] that seemed unlikely.

 

MariaDB is another possibility. Looking at its logs [2] and I see some timed
out connections. 

 

I might monitor the connections between the background workers and the
database tonight and see if it's related. It might also explain why it
happens on my MariaDB system but not my MySQL system.

 

Anyway, just putting out some feelers.

 

[1]

2023-10-18 07:44:06.492400+11:00 [info] <0.30487.131> accepting STOMP
connection <0.30487.131> (127.0.0.1:59120 -> 127.0.0.1:61613)

2023-10-18 07:44:06.500534+11:00 [info] <0.30487.131> closing STOMP
connection <0.30487.131> (127.0.0.1:59120 -> 127.0.0.1:61613)

2023-10-18 07:44:06.510426+11:00 [info] <0.20712.130> closing STOMP
connection <0.20712.130> (127.0.0.1:57508 -> 127.0.0.1:61613)

2023-10-18 07:44:08.703380+11:00 [info] <0.30518.131> accepting STOMP
connection <0.30518.131> (127.0.0.1:59882 -> 127.0.0.1:61613)

 

2023-10-19 07:21:26.254065+11:00 [info] <0.27344.133> accepting STOMP
connection <0.27344.133> (127.0.0.1:54116 -> 127.0.0.1:61613)

2023-10-19 07:21:26.259129+11:00 [info] <0.27344.133> closing STOMP
connection <0.27344.133> (127.0.0.1:54116 -> 127.0.0.1:61613)

2023-10-19 07:21:26.269652+11:00 [info] <0.30518.131> closing STOMP
connection <0.30518.131> (127.0.0.1:59882 -> 127.0.0.1:61613)

2023-10-19 07:21:26.660604+11:00 [info] <0.27372.133> accepting STOMP
connection <0.27372.133> (127.0.0.1:46178 -> 127.0.0.1:61613)

 

[2]

Oct 18 02:08:28 awesome-host mariadbd[959]: 2023-10-18  2:08:28 6308
[Warning] Aborted connection 6308 to db: 'koha_instance' user:
'koha_instance' host: 'localhost' (Got timeout reading communication
packets)

Oct 18 02:15:58 awesome-host mariadbd[959]: 2023-10-18  2:15:58 6304
[Warning] Aborted connection 6304 to db: 'koha_instance' user:
'koha_instance' host: 'localhost' (Got timeout reading communication
packets)

Oct 18 02:16:06 awesome-host mariadbd[959]: 2023-10-18  2:16:06 6303
[Warning] Aborted connection 6303 to db: 'koha_instance' user:
'koha_instance' host: 'localhost' (Got timeout reading communication
packets)

Oct 18 21:10:08 awesome-host mariadbd[959]: 2023-10-18 21:10:08 6380
[Warning] Aborted connection 6380 to db: 'koha_instance' user:
'koha_instance' host: 'localhost' (Got timeout reading communication
packets)

Oct 19 02:21:17 awesome-host mariadbd[959]: 2023-10-19  2:21:17 6431
[Warning] Aborted connection 6431 to db: 'koha_instance' user:
'koha_instance' host: 'localhost' (Got timeout reading communication
packets)

Oct 19 02:24:02 awesome-host mariadbd[959]: 2023-10-19  2:24:02 6432
[Warning] Aborted connection 6432 to db: 'koha_instance' user:
'koha_instance' host: 'localhost' (Got timeout reading communication
packets)

 

David Cook

Senior Software Engineer

Prosentient Systems

Suite 7.03

6a Glen St

Milsons Point NSW 2061

Australia

 

Office: 02 9212 0899

Online: 02 8005 0595

 

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