Adding a node to a cluster

Add Cassandra, Solr, Spark, or Hadoop nodes to a cluster locally or in the cloud.

Follow these steps to add Cassandra, Solr, Spark, or Hadoop nodes to a cluster locally or in the cloud. After adding a node to a cluster, rebalancing the cluster is recommended.

Note: When adding a node to a cluster, only the following snitches are supported: SimpleSnitch, DseSimpleSnitch, and RackInferringSnitch. Forthcoming versions of OpsCenter will provide more robust support for additional snitches. All snitches available in Cassandra are described in the Cassandra documentation.

Procedure

  1. Click cluster name > Nodes in the left navigation pane.
  2. Click Cluster Actions > Add Node > Add node type.
    The Add Type Nodes dialog appears.



  3. Click Cloud or Local.

    The Cloud and Local buttons appear only if OpsCenter is running in the cloud.

  4. Enter the following:
    Option Value
    Package The version of DSE to install on the node.
    DataStax credentials The username and password you received when registering to Download DSE.
    Nodes The hostname or IP address, token, and software to install on the node (from Cassandra, Solr, Spark, and Hadoop). You can add more than one node by clicking Add.
    Node credentials (sudo) (Local only) The username and password to authenticate on the host. (Optional) The private SSH key to use for authentication.
    Amazon EC2 Credentials (Cloud only) The <access-key-id> and <secret-access-key> to use to authenticate on AWS EC2.
    Availability Zone (Cloud only) Which availability zone to use. The menu populates after entering your EC2 credentials.
    Size (Cloud only) Which size image to use.
    AMI (Cloud only) Which image to use.
    Use OpsCenter specific security group (Cloud only) Determines whether OpsCenter creates its own specific security group (default), or allows you to select one that is available using your EC2 credentials.
    Use OpsCenter specific keypair (Cloud only) Determines whether OpsCenter creates its own specific keypair (default), or allows you to select one that is available using your EC2 credentials.
    View Advanced Options Access cassandra.yaml for configuring a node.
  5. Click Add Nodes.