/etc/icinga2/features-available/compatlog.conf is in icinga2-common 2.6.0-2+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | /**
* The CompatLogger type is responsible for writing log files in a format
* that is compatible with Icinga 1.x.
*/
library "compat"
object CompatLogger "compatlog" { }
|