If a node in your Redis Enterprise Software (RS)cluster is faulty, its status appears as Down in the Status column of the Nodes page, and in the Cluster > Configuration page.

Example of a nodefailure

To replace a faulty node:

  1. Acquire a new node that is identical to the old node, install and configure Redis Enterprise Software on it per the install instructions.

    Note -
    If you are using Redis on Flash, you must make sure the required flash storage is set up on this new node.
  2. Add a new node, as described in adding a new node to a cluster.

  3. Make sure the new node has as much available memory as the faulty node.

  4. A message appears, informing you that the cluster has a faulty node and that the new node replaces the faulty node.

  5. If the new node has insufficient memory, you are prompted to add a different node - one with sufficient memory.

    Note -
    • If there is a faulty node in the cluster to which you are adding a node,
    • RS enforces using the new node to replace the faulty one.
    • If you are using the DNS NS record based connection approach, the DNS records must be updated each time a node is added or replaced.