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Description of problem:
The [scheduler] plug-in has support for (black|white)listing processes by the 'ps_(black|white)list' options. The (ex|in)clusion is implemented based on regular expression matching process names. We need a similar mechanism mostly to exclude processes from the [scheduler] plug-in based on cgroup names. Process inclusion (whitelisting) might also be useful. Both cgroups v1 and v2 need to be supported. For cgroups v1, regular expression matching should likely be performed for all the hierarchies, i.e. multi-line matching in the /proc/PID/cgroup file.
Proposed syntax:
[scheduler]
#cgroup_ps_whitelist=.* # by default, whitelist matches all processes
cgroup_ps_blacklist=/kubepods\.slice/
should exclude processes such as:
$ grep ^1: /proc/4334/cgroup
1:name=systemd:/kubepods.slice/kubepods-burstable.slice/kubepods-burstable-pod73ea0596_5e4c_4310_b3cf_c14c15ea3cfc.slice/crio-8b2fd8a97c19123fbb6a8bf4feefddb9a87aa2b1ba8b7009b94f73fcab270007.scope
Additional info:
Original BZ that prompted the need for this feature:
https://bugzilla.redhat.com/show_bug.cgi?id=1979352
Comment 2Jaroslav Škarvada
2021-07-15 19:35:27 UTC