OpsCenter 4.0 User Guide

General troubleshooting steps

Ensure firewalls are properly opened between the opscenterd machine and each node.

Check the following files (on any of the nodes having problems) for any errors:
  • /var/log/cassandra/system.log
  • /var/log/opscenter-agent/agent.log

Verify that Cassandra (or DSE) was not previously installed on any of the machines; if it was, all binaries, configuration files, logs, etc. must be cleared out first.