Aria Operations for Logs is offline due to Cassandra service failure on worker nodes

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

The Aria Operations for Logs UI is not accessible and the cluster status is offline. When checking the service status on worker nodes, the Cassandra service is not running.

Environment

Aria Operations for Logs 8.x

Cause

A DNS issue caused the Primary node to resolve to an incorrect IP address. Consequently, the seed configuration in the cassandra.yaml file on the worker nodes referenced the wrong IP for the Primary node, preventing the Cassandra service from starting.

Resolution

1. Resolve the DNS issue in the environment to ensure the Primary node resolves to the correct IP address.
2. Log in to the affected worker node(s) as root via SSH.
3. Open the Cassandra configuration file for editing:
   
   vi /storage/core/loginsight/cidata/cassandra/config/cassandra.yaml
4. Locate the seeds section and update the IP address to match the correct IP of the Primary node.
5. Save and close the file.
6. Restart the loginsight service:
   
   systemctl restart loginsight
   
   
7. Verify the service is running:
   
   nodetool-no-pass status
   
   
8. Verify and confirm Aria Operations for Logs UI is accessible.