Replace a faulty cluster node
If a node in your Redis Enterprise Software cluster is faulty, its status appears as Down in the Status column of the Nodes page, and in the Cluster > Configuration page.
To replace a faulty node:
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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. -
Add a new node, as described in adding a new node to a cluster.
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Make sure the new node has as much available memory as the faulty node.
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A message appears, informing you that the cluster has a faulty node and that the new node replaces the faulty node.
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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.