Question
According to KB article #9039, since POA version 5.5, a restart of pem service is required in order to change POA log level to TRACE.
TRACE log level contains API requests that POA sends to Virtuozzo Hardware Nodes and Parallels Plesk Panel installations, and the responses to them.
How to enable the logging of these requests without POA restart?
Answer
Since POA 5.5.2, it is possible to separately enable logging of Virtuozzo/Plesk requests without pem service restart by launching the following commands from POA core node:
For logging Virtuozzo API packets:
~# kill -SIGUSR1 `pgrep -f VPSManager`
For logging Plesk API packets:
~# kill -SIGUSR1 `pgrep -f PleskBridge`
The consequent sending of the SIGUSR1 signal switches log level to default.