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# general
a
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b
Do you have a restriction on the number of worker nodes that can be upgraded at a time? I don't remember the name of the setting off the top of my head.
p
Thank you very much for the quick answer. I don't think I never touched this restriction. By the way, I use version 2.7.0.
And after some time I'm getting this error. when tryting to register to Node to the cluster.
b
OK. I think that error means that what I was talking about isn't the issue.
p
The Node has a public IP and a private IP (which uses to communicate inside the Cluster), I assume that could be a problem with networking.
See the status of the Nodes.