Hi Morten,
Thanks for waiting. Presumably this is happening due to the fact that sometimes the number of running PHP processes spikes enough to make imunify360-php-daemon hit the maximum number of open files threshold.
That maximum number of open files is specified on a service level and defaults to 1024.
The imunify360-php-daemon version 1.1.3-1 that has been installed along with the latest update has this limit increased to 4096 by default through the system unit.
As a workaround, the limit can be increased by executing
systemctl edit imunify360-php-daemon
and saving the following:
[Service]
LimitNOFILE=4096
After that, please execute
systemctl restart imunify360-php-daemon
If the above doe not resolves the problem, please get back to us with a ticket
https://cloudlinux.zendesk.com/hc/en-us/requests/new so that we can take a closer look at the problem.
We are still working on a permanent fix, it will take several days.
Thank you for understanding.