Werk #7430: ps: fix empty output on older distros with cgroups

Component

Checks & agents

Title

ps: fix empty output on older distros with cgroups

Date

Jul 1, 2019

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.0.0i1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.6.0b3	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Werk #7420 used the column cgname to determine if a process belongs to a docker container. Unfortunately, the column is not available on older distros with cgroups like e.g. Ubuntu 16.04. To fix this issue the ps section now uses the cgroup column.

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