With the trouble we’ve experienced in moving to 2.0, we’d like to get back to 1.8.1 in our production cluster for now while we work through our issues in a test environment. My plan was to use ‘swap rebalance’ to replace 2.0 instances with 1.8.1 instances. However, when I attempt to add the 1.8.1 node, I encounter this error:
Attention - This node cannot add another node (‘email@example.com’) because of cluster version compatibility mismatch. Cluster works in [2, 0] mode and node only supports [1, 8]
It appears that I need to get the cluster back into [1, 8] mode, but I haven’t found any information on how to do that.
Please advise. Thanks.