Werk #18653: Netstat: Switch linux plugin to prefer 'ss' over deprecated 'netstat'

Component

Checks & agents

Title

Netstat: Switch linux plugin to prefer 'ss' over deprecated 'netstat'

Date

Sep 18, 2025

Level

Trivial Change

Class

New Feature

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.5.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

The netstat linux plugin previously used 'netstat' as the primary tool and fell back to 'ss' if 'netstat' was unavailable.

This order has now been reversed: 'ss' is used first, and 'netstat' serves only as a fallback. The change reflects the fact that 'netstat' has been deprecated for a long time, while 'ss' is the recommended replacement.

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