Hello
I’m trying to migrate from Community to Enterprise Edition using the rolling upgrade strategy. When my cluster is mixed (2 CE nodes and 2 EE ones) I’m trying to remove CE node from cluster and getting the following error:
Rebalance exited with reason {service_rebalance_failed,fts,
{worker_died,
{‘EXIT’,<0.13254.3769>,
{rebalance_failed,
{service_error,
<<“nodes: sample res.StatusCode not 200, res: &http.Response{Status:"503 Service Unavailable", StatusCode:503, Proto:"HTTP/1.1",
ProtoMajor:1, ProtoMinor:1, Header:http.Header{"Content-Length":string{"50"}, "Content-Type":string{"text/plain; charset=utf-8"},
"Date":string{"Mon, 09 Oct 2023 05:07:44 GMT"}}, Body:(*http.bodyEOFSignal)(0xc01cf32580), ContentLength:50, TransferEncoding:string(nil), Close:false, Uncompressed:false, Trailer:http.Header(nil), Request:(*http.Request)(0xc02347e300), TLS:(*tls.ConnectionState)(0xc00f9aa840)}, urlUUID: monitor.UrlUUID{Url:"https://couchbase-server-2:18094", UUID:"0d20d5f5c7d3b110ead0ea7970f35a72"}, kind: /api/stats?partitions=true, err: ”>>}}}}}.
As I understand 18094 is secured port for FTS. Probably EE nodes communicate between each other using TLS, while CE nodes don’t. At the same time node-to-node encryption is turned off in cluster settings, so I can’t understand why this error happens