Splunk Indexer Error

[abhijitnath89ax]

We received the below error in splunkd.log on our indexer server. We are using cluster env with 6 indexers. The indexers are coming up and down

11-05-2020 07:43:17.734 +0000 WARN TcpInputProc - Stopping all listening ports. Queues blocked for more than 300 seconds
11-05-2020 07:43:17.734 +0000 INFO TcpInputProc - Stopping IPv4 port 9995
11-05-2020 07:43:17.734 +0000 INFO TcpInputProc - Stopping IPv4 port 9997

[richgalloway]

Why are the queues blocked?  Use the Monitoring Console to see which queue is blocked then address it.  Usually, a slow storage system is the cause.