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

ID: 14732 Title: cmk-update-agent: Retry locking Component: agents Level: 1 Class: Bug fix Version: 2.2.0i1 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.