After Installing DX NetOps Topology, the Hazelcast Service will not start

Products

• Network Observability

Issue/Introduction

When the Hazelcast service is trying to start, users are seeing the following error in the /opt/netops-topology/hazelcast-<version>-slim/logs/hazelcast.log

[ WARN] [hz.keen_banach.cached.thread-10] [.b.n.d.MySqlDAOImpl]: Error reading record: Table 'globaltopology.hz_persistence_location_data' doesn't exist

Cause

Directory Permissions due to umask settings

Resolution

This issue is occurring because umask is set to 0077 on the topology system. When that happens, the proper permissions are not set for the /opt/netops-topology/hazelcast-<version>-slim directory. The following steps should resolve this issue.

chmod -R 755  /opt/netops-topology/hazelcast-<version>-slim

Stop and Restart the following services via systemctl

hazelcast
graph-store-api
topology
connection
graph-cdc
netops-alarm-consumer