Securing internal transactional node connections

Node-to-node (internode) encryption protects data transferred between nodes in a cluster using SSL (Secure Sockets Layer). For information about generating SSL certificates, see Setting up SSL certificates.

OpsCenter Lifecycle Manager can configure DataStax Enterprise clusters to use node-to-node encryption and automates the process of preparing server certificates using an internal certificate authority and deploys the resulting keystore and truststore to each node automatically.


To enable node-to-node SSL encryption:

  1. Set the server_encryption_options in the cassandra.yaml file on each node:

    • internode_encryption: Encrypts traffic between nodes, options: none, all, dc, or rack.

    • keystore: Relative path from DSE installation directory or absolute path to the keystore file.

    • keystore_password: Password to access the keystore.

    • truststore: Relative path from DSE installation directory or absolute path to truststore file.

    • truststore_password: Password to access truststore.

    • require_client_auth: Enable two way encryption. After enabling you must configure clients, such as nodetool and cqlsh to use SSL.

    • require_endpoint_verification: Optional, verify the connected node’s IP address matches the certificate.

    To encrypt the truststore and keystore passwords with KMIP, see Encrypting table data.

       internode_encryption: **all**
       keystore: **resources/dse/conf/keystore.jks**
       keystore_password: **myPassKey**
       truststore: **resources/dse/conf/truststore.jks**
       truststore_password: **truststorePass**
       require_client_auth: **true**
       require_endpoint_verification: **true**
  2. Restart DSE.

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