Werk #18668: Use UUIDs instead of incremental integers for keypair identifiers

Component

Core & setup

Title

Use UUIDs instead of incremental integers for keypair identifiers

Date

Jan 21, 2026

Level

Trivial Change

Class

New Feature

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.5.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

The keypair store (used for backup encryption keys and agent signature keys) now uses UUIDs instead of incremental integers as key identifiers.

This change improves key management by avoiding potential ID conflicts and provides more robust key identification.

Existing keys with integer IDs continue to work transparently.