DataStax OpsCenter Documentation

Cluster administration

You can add, edit, or delete a cluster from OpsCenter and generate a PDF report about the cluster. OpsCenter Enterprise Edition 2.1.3 can monitor and administer Cassandra 1.2 as described in these procedures unless you enable virtual nodes. When you enable virtual nodes, OpsCenter chooses a single token for each node for operations, such as collecting metrics. Attempting to move nodes, rebalance nodes, and perform other tasks involving token ranges is not supported.

Prerequisites for administering a cluster

You must have a running and properly configured Cassandra cluster, as described in the documentation. OpsCenter 2.1.3 and later supports:

  • Cassandra 1.2 clusters with limitations if you enable virtual nodes
  • Cassandra 0.8 - 1.1.x clusters
  • DataStax Enterprise 2.2.x and earlier clusters, including multiple data center clusters

Adding a cluster to OpsCenter

To add a cluster to Opscenter:

  1. Click Add a Cluster.

  2. Enter the hostname or IP address for the nodes comprising the cluster. For example:

    ec2-123-45-6-789.us-west-1.compute.amazonaws.com
    ec2-234-56-7-890.us-west-1.compute.amazonaws.com
    
  3. If you are not using the default JMX or Thrift ports, enter the appropriate port numbers.

  4. If required, click Add Credentials and enter the username and password for JMX or Thrift ports.

  5. Click Add Cluster.

Modifying a cluster setting

To modify a cluster setting:

  1. Click Edit Cluster.
  2. Change the IP addresses of cluster nodes.
  3. Change JMX and Thrift listen port numbers. Click Add credentials if the ports require authentication.
  1. Click Save Cluster.

Removing a cluster from OpsCenter

To remove a cluster

This removes the cluster from OpsCenter, it does not delete the cluster.

  1. Click Edit Cluster.
  2. Click Delete Cluster.

Generating a report

To generate a PDF report about the cluster being monitored, click Report at the top of the OpsCenter interface. The report shows the version of OpsCenter, number of clusters and nodes being monitoring, gigabytes of storage used, name of the cluster, and information about nodes in the cluster. The node information includes:

  • Node name and IP address
  • Cassandra software version
  • DataStax software version
  • Memory usage
  • Operating system running on the node

You can save or print the PDF report.