Thakns @rsx. I upgraded the failing agent to r2.11.4-1 tonight. Following are the icinga2.log after the upgrade. Do I need to try rm -rf /var/lib/icinga2/api/{packages,zones,zones-stage}/
again??
[2020-07-30 06:25:01 +0000] information/Application: Received USR1 signal, reopening application logs.
[2020-07-30 06:28:14 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 06:28:53 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:28:53 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:32:18 +0000] information/Application: Received request to shut down.
[2020-07-30 06:32:18 +0000] information/Application: Shutting down...
[2020-07-30 06:32:18 +0000] information/CheckerComponent: 'checker' stopped.
[2020-07-30 06:32:18 +0000] information/ApiListener: 'api' stopped.
[2020-07-30 06:32:20 +0000] information/FileLogger: 'main-log' started.
[2020-07-30 06:32:20 +0000] information/FileLogger: 'debug-file' started.
[2020-07-30 06:32:20 +0000] information/ApiListener: 'api' started.
[2020-07-30 06:32:20 +0000] information/ApiListener: Started new listener on '[0.0.0.0]:5665'
[2020-07-30 06:32:20 +0000] information/CheckerComponent: 'checker' started.
[2020-07-30 06:32:20 +0000] information/ApiListener: Reconnecting to endpoint 'icinga-satellite.***' via host '10.**.***.**' and port '5665'
[2020-07-30 06:32:20 +0000] information/ConfigItem: Activated all objects.
[2020-07-30 06:32:20 +0000] information/ApiListener: New client connection for identity 'icinga-satellite.***' to [10.**.***.**]:5665
[2020-07-30 06:32:20 +0000] information/ApiListener: Requesting new certificate for this Icinga instance from endpoint 'icinga-satellite.***'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Sending config updates for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Finished sending config file updates for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Syncing runtime objects to endpoint 'icinga-satellite.***'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Finished syncing runtime objects to endpoint 'icinga-satellite.***'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Finished sending runtime config updates for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Sending replay log for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Finished sending replay log for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Finished syncing endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:32:20 +0000] information/ApiListener: Finished reconnecting to endpoint 'icinga-satellite.***' via host '10.**.***.**' and port '5665'
[2020-07-30 06:32:30 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:32:30 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:33:23 +0000] information/Application: Received request to shut down.
[2020-07-30 06:33:24 +0000] information/Application: Shutting down...
[2020-07-30 06:33:24 +0000] information/CheckerComponent: 'checker' stopped.
[2020-07-30 06:33:24 +0000] information/ApiListener: 'api' stopped.
[2020-07-30 06:33:24 +0000] information/FileLogger: 'main-log' started.
[2020-07-30 06:33:24 +0000] information/FileLogger: 'debug-file' started.
[2020-07-30 06:33:24 +0000] information/ApiListener: 'api' started.
[2020-07-30 06:33:24 +0000] information/ApiListener: Started new listener on '[0.0.0.0]:5665'
[2020-07-30 06:33:24 +0000] information/ApiListener: Reconnecting to endpoint 'icinga-satellite.***' via host '10.**.***.**' and port '5665'
[2020-07-30 06:33:24 +0000] information/CheckerComponent: 'checker' started.
[2020-07-30 06:33:24 +0000] information/ConfigItem: Activated all objects.
[2020-07-30 06:33:24 +0000] information/ApiListener: New client connection for identity 'icinga-satellite.***' to [10.**.***.**]:5665
[2020-07-30 06:33:24 +0000] information/ApiListener: Requesting new certificate for this Icinga instance from endpoint 'icinga-satellite.***'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Sending config updates for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Finished sending config file updates for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Syncing runtime objects to endpoint 'icinga-satellite.***'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Finished syncing runtime objects to endpoint 'icinga-satellite.***'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Finished sending runtime config updates for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Sending replay log for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Finished sending replay log for endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Finished syncing endpoint 'icinga-satellite.***' in zone 'satellite'.
[2020-07-30 06:33:24 +0000] information/ApiListener: Finished reconnecting to endpoint 'icinga-satellite.***' via host '10.**.***.**' and port '5665'
[2020-07-30 06:33:34 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:33:34 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:38:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 06:38:44 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:38:44 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:43:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 06:43:53 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:43:53 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:48:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 06:49:03 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:49:03 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:53:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 06:54:13 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:54:13 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:58:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 06:59:23 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 06:59:23 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 07:03:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 07:04:33 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 07:04:33 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 07:08:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 07:09:43 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 07:09:43 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 07:13:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'
[2020-07-30 07:14:53 +0000] information/WorkQueue: #6 (ApiListener, SyncQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 07:14:53 +0000] information/WorkQueue: #5 (ApiListener, RelayQueue) items: 0, rate: 0/s (0/min 0/5min 0/15min);
[2020-07-30 07:18:24 +0000] information/ConfigObject: Dumping program state to file '/var/lib/icinga2/icinga2.state'