Werk #14732: cmk-update-agent: Retry locking

Komponente Agent bakery
Titel cmk-update-agent: Retry locking
Datum 25.08.2022
Checkmk-Edition Checkmk Enterprise (CEE)
Checkmk-Version 2.2.0b1 2.1.0p11 2.0.0p28
Level Kleine Änderung
Klasse Bugfix
Kompatibilität Kompatibel - benötigt kein manuelles Eingreifen

The agent updater is designed to have no more than one instance running at a time on a host. This is implemented by holding a file lock while running.

We recently observed that a lock may sometimes fail briefly after it was released by a previous agent updater instance, possibly due to some anti virus software.

To mitigate this situation, the locking is now retried 10 times before aborting the agent updater call.

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