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I have a Redis cluster with 6 nodes (3 masters,3 slaves). One of the nodes has been replaced with a new one but the old container is left in the list of nodes:

0ab126e86a172a9471a25ff3d2241b2793b87539 :0@0 master,fail,noaddr - 1627299797915 1627299797816 1 disconnected

I would like to remove that entry because that container will never come back but when I run:

redis-cli --cluster del-node IP:PORT 0ab126e86a172a9471a25ff3d2241b2793b87539

I get

>>> Removing node 0ab126e86a172a9471a25ff3d2241b2793b87539 from cluster IP:PORT
[ERR] No such node ID 0ab126e86a172a9471a25ff3d2241b2793b87539

What am I missing?

oroblam
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1 Answers1

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You can try with:

redis-cli --cluster forget 0ab126e86a172a9471a25ff3d2241b2793b87539

Then run a soft reset to update all the other nodes, in the cluster.

Radu Linu
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George Georgaras
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  • I can run a cluster forget on all the nodes and that is going to work. However, I've noticed that del-node does not work if you have some nodes in a failure state because redis-cli tries to talk to disconnected nodes. I raised a bug in redis-cli to fix that behaviour (https://github.com/redis/redis/issues/9957) – oroblam Jan 05 '22 at 15:02