Multiple events are noticed on the controller related to controller_service_failure and controller_process_stopped.
The events controller_service_failure or controller_process_stopped
are suggestive of high memory usage on the controller. As a result, the memory balancer feature kicks in and restarts a few processes (based on priority) to bring the System memory utilisation to optimum.
The high memory is consumed by avi-logmgr process which is due to the presence of a large number of IP address groups.
As a workaround, the overall system memory can be increased and then increase the allowed memory usage by avi-logmgr.
It is recommended to contact Avi support team to help with increasing the allowed memory.