Applicable to:
- Plesk for Linux
Symptoms
- All sites are down;
- Manual restart of nginx resolves the issue;
- The following messages appear after executing of
service nginx status
command:# service nginx status
. . .
nginx: worker process is shutting down - Server running as a container of a Virtuozzo host node;
- Output of
dmesg
command shows a number of OOM (Out of memory) entries:# dmesg
Out of memory in UB 425: OOM killed process 17660 (nginx) score 27 vm:326900kB, rss:97620kB, swap:189992kB
Out of memory in UB 425: OOM killed process 17662 (nginx) score 27 vm:326900kB, rss:102428kB, swap:185184kB
. . . -
'failcnt' value is not equal 0
# cat /proc/user_beancounters
resource held maxheld barrier limit failcnt
. . .
physpages 1677634 2621726 0 2621440 1600
Cause
A command for nginx shutdown process comes from the Virtuozhost nodeode due to the fact that nginx consumes a lot of memory resources.
Resolution
Contact host provider to increase the amount of memory allocated to the server.
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