MySQL fails and recovers every morning

CK2017

Registered
Jul 28, 2017
3
0
1
Australia
cPanel Access Level
Root Administrator
Hi everyone,

longtime listener, first time caller.

  • CLOUDLINUX 6.9 x86_64 xen pv
  • cPanel & WHM 64.0 (build 36)
A few months back mySQL began failing and then recovering at approximately the same time every morning (3.50am - 4.00am).

The alert email shows multiple lines of:
/usr/sbin/mysqld: Out of memory (Needed 3789200 bytes)
and then:
/usr/sbin/mysqld: Normal shutdown
/usr/sbin/mysqld: Shutdown complete

Memory Information
Used 5.84 GB
Available 4.48 GB
Installed 10.32 GB

Load Information
0.62 1.49 2.17


After Googling I checked the Daily Cron jobs and there is a /usr/local/cpanel/scripts/upcp --cron
which today for example started at 3.53am and completed at 4.19am.
After a call to the server provider,

Due to the time of day this has been occurring it hasn't been a huge problem. But of late some clients have begun using up-time monitoring services via their seo agents, who then hand out torches and pitchforks.
I have searched the logs I can find but cannot see any correlation between events/errors at this time. (aside from the timing of the upcp --cron job)
Suggestions would be greatly appreciated.