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# rke2a
adamant-kite-43734
08/01/2023, 8:41 AMThis message was deleted.
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salmon-nest-83962
08/01/2023, 8:45 AMwhen i change public ip for for my master node
Getting such errors
Empty dialer response" error="x509: certificate is valid for x.x.x.x(my_old_public_ip), not x.x.x(my_new_public_ip)
Failed to test data store connection: this server is a not a member of the etcd cluster.
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creamy-pencil-82913
08/01/2023, 9:24 AMwhat do you mean by “A single master ,a single server and a single worker.”
creamy-pencil-82913
08/01/2023, 9:24 AMRKE2 doesn’t have masters or workers. It has servers and agents.
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salmon-nest-83962
08/01/2023, 9:25 AMa single main server another server and a single agent
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creamy-pencil-82913
08/01/2023, 9:25 AMyou have two servers and one agent? are both servers running etcd?
creamy-pencil-82913
08/01/2023, 9:26 AMServers should have static IPs. If you change the address of a server, you need to delete it from the cluster and rejoin it, or use --cluster-reset to reset the etcd cluster membership to the current node with the current IP, then rejoin the others.
creamy-pencil-82913
08/01/2023, 9:26 AMAlso, you should always have an odd number of servers running etcd. 1 or 3, never 2.
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salmon-nest-83962
08/01/2023, 9:30 AMThanks for reply yes both servers running etcd.
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