Checking the node status
This content applies only to On-premises and Client-managed cloud environments
Check the status of Decision Data Store (DDS) nodes, for example, to troubleshoot Cassandra-related failures listed in Pega Platform logs.
- If you are using Cassandra in embedded mode, perform the following steps:
- In the header of Dev Studio, click .
- On the Decision Data Store landing page, ensure
that data correctly replicates across nodes by verifying that the
ownership percentages of all DDS nodes add up to 100%.
- For both external and embedded Cassandra, check the node state in the nodetool
utility:
- In the nodetool utility, run the nodetool status command.
- Ensure that the cluster status report lists all nodes.
- In the -- column, ensure that all nodes
are marked as UN.UN means that the node status is UP and that the node state is NORMAL.
- If a node does not have UN status, investigate the
source of the problem, for example, by performing other Cassandra
troubleshooting procedures.For more information, see the Troubleshooting section of the Apache Cassandra documentation.
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