The original post: /r/debian by /u/keldrin_ on 2024-12-24 11:30:27.
Hi!
I have a VPS server running nextcloud on debian. For some reason, it becomes really slow and unresponsive every 3-4 days and I have to (hard) reboot it from my provider's webinterface.
Last time that happened I managed to log in before it died completely and found a lot of processes that should not be there.
Here is the heavily edited and commented output of ps aux on the server just before I had to reboot it:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
# main suspect: the cron job
# appears 54 times in the process list
root 29559 0.0 0.0 5464 884 ? D Dec22 0:00 sync
root 32255 0.0 0.0 8500 2768 ? S Dec22 0:00 /usr/sbin/CRON -f
root 32256 0.0 0.0 2576 884 ? Ss Dec22 0:00 /bin/sh -c sync; echo 3 > /proc/sys/vm/drop_caches
# comes in variations
# just one example, there are more variations
root 46397 0.0 0.0 5464 880 ? D Dec22 0:00 sync
root 46591 0.0 0.0 167892 5052 ? Ss Dec22 0:00 (tmpfiles)
root 46592 0.0 0.0 0 0 ? D Dec22 0:00 [(sd-mkdcreds)]
root 47908 0.0 0.0 8500 2768 ? S Dec22 0:00 /usr/sbin/CRON -f
root 47909 0.0 0.0 2576 940 ? Ss Dec22 0:00 /bin/sh -c sync; echo 3 > /proc/sys/vm/drop_caches
# loads of rogue apaches
# i guess OOM kill and respawn
# Body count: 74
www-data 87487 0.0 1.5 400920 92612 ? S Dec23 0:31 /usr/sbin/apache2 -k start
I really don't know what's going on.
Both the mariadb database and nextcloud data partition are on LUKS encrypted LVM containers, formatted with ext4. Maybe some interference here?