Safe to remove icinga2.debug.XXXX from /var/cache/icinga2?

we’re running an HA 2 master cluster with 15 satellite zones and i just discovered both our masters are running low on diskspace due to a large number of debug files in /var/cache/icinga2. is it safe to delete the “old” cache files named like icinga2.debug.XXXXXX? we really need to free up some space and this is the biggest offender.

icinga2 --version
icinga2 - The Icinga 2 network monitoring daemon (version: r2.11.2-1)

Copyright (c) 2012-2023 Icinga GmbH (
License GPLv2+: GNU GPL version 2 or later
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

System information:
Platform: Debian GNU/Linux
Platform version: 9 (stretch)
Kernel: Linux
Kernel version: 4.4.0-210-generic
Architecture: x86_64

Build information:
Compiler: GNU 6.3.0
Build host: runner-LTrJQZ9N-project-298-concurrent-0

Application information:

General paths:
Config directory: /etc/icinga2
Data directory: /var/lib/icinga2
Log directory: /var/log/icinga2
Cache directory: /var/cache/icinga2
Spool directory: /var/spool/icinga2
Run directory: /run/icinga2

Old paths (deprecated):
Installation root: /usr
Sysconf directory: /etc
Run directory (base): /run
Local state directory: /var

Internal paths:
Package data directory: /usr/share/icinga2
State path: /var/lib/icinga2/icinga2.state
Modified attributes path: /var/lib/icinga2/modified-attributes.conf
Objects path: /var/cache/icinga2/icinga2.debug
Vars path: /var/cache/icinga2/icinga2.vars
PID path: /run/icinga2/

Hello pete!

I’d say if they’re 1d+ old and named like icinga2.debug.Qgzd8OQM, thrash 'em.