Apigee 3 node cassandra going down

[soumyakuberan]

Hi Team,

I have a pre-prod and production environment in which there are 3 node Cassandra nodes implemented.

Among them ,2 are seed nodes .

Recently noticed in prod and preprod, these seed nodes are going down. and the cassandra stopped listening in port 9160 and 9042 ports.

And when I checked in Management server logs there was issue connecting to Cassandra and Management server UI was showing some error.

Also I did check apigee-all status check, It also shown that Cassandra seeds nodes are down.

However, from Cassandra logs I could not make out what made the Cassandra to go down.

Is the weekly maintenance tasks mandatory for Cassandra? How to find the root cause of the issue?

Thanks,

Soumya