Werk #19365: Elasticsearch indices: don't crash on malformed section data

Component

Checks & agents

Title

Elasticsearch indices: don't crash on malformed section data

Date

Apr 13, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Hosts that provided an elasticsearch_indices section in an unexpected format (for example, from a legacy or third-party agent emitting plain tabular rows instead of a single JSON payload) caused the section parser to abort with an opaque JSONDecodeError.

The parser now returns an empty section when the section data is missing or cannot be decoded as JSON. Affected services will go stale rather than producing a crash report.

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