Werk #14732: cmk-update-agent: Retry locking
| Component | Agent bakery | ||||||
| Title | cmk-update-agent: Retry locking | ||||||
| Date | Aug 25, 2022 | ||||||
| Level | Trivial Change | ||||||
| Class | Bug Fix | ||||||
| Compatibility | Compatible - no manual interaction needed | ||||||
| Checkmk versions & editions |
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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.