Critical Description
In 6.6.x, the pools/default/nodeServicesStreaming endpoint on a node being rebalanced out provides an update indicating that the node is in fact getting rebalanced out prior to closing. In Cheshire-Cat, the connection simply closes.
As analytics uses the output of this endpoint to maintain information on remote link topology changes, we are unaware of the rebalance out.
e.g. in 6.6.2 when n_0 is being rebalanced out:
$ curl -u couchbase:couchbase http://localhost:9001/pools/default/nodeServicesStreaming
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{"rev":13,"nodesExt":[{"services":{"mgmt":9001,"mgmtSSL":19001,"kv":12002,"kvSSL":11994,"capi":9501,"capiSSL":19501,"projector":10001,"projector":10001},"thisNode":true,"hostname":"192.168.33.218"}],"clusterCapabilitiesVer":[1,0],"clusterCapabilities":{"n1ql":["enhancedPreparedStatements"]}}
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....
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{"rev":2032,"nodesExt":[{"services":{"mgmt":9001,"mgmtSSL":19001,"kv":12002,"kvSSL":11994,"capi":9501,"capiSSL":19501,"projector":10001,"projector":10001},"thisNode":true,"hostname":"192.168.33.218","alternateAddresses":{"external":{"hostname":"0.0.0.0","ports":{"mgmt":9001,"mgmtSSL":19001,"kv":12002,"kvSSL":11994,"capi":9501,"capiSSL":19501,"projector":10001,"projector":10001}}}},{"services":{"mgmt":9002,"mgmtSSL":19002,"kv":12004,"kvSSL":11990,"capi":9502,"capiSSL":19502,"projector":10002,"projector":10002},"hostname":"192.168.33.218","alternateAddresses":{"external":{"hostname":"0.0.0.0","ports":{"mgmt":9002,"mgmtSSL":19002,"kv":12004,"kvSSL":11990,"capi":9502,"capiSSL":19502,"projector":10002,"projector":10002}}}}],"clusterCapabilitiesVer":[1,0],"clusterCapabilities":{"n1ql":["enhancedPreparedStatements"]}}
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{"rev":3017,"nodesExt":[{"services":{"mgmt":9002,"mgmtSSL":19002,"kv":12004,"kvSSL":11990,"capi":9502,"capiSSL":19502,"projector":10002,"projector":10002},"hostname":"192.168.33.218","alternateAddresses":{"external":{"hostname":"0.0.0.0","ports":{"mgmt":9002,"mgmtSSL":19002,"kv":12004,"kvSSL":11990,"capi":9502,"capiSSL":19502,"projector":10002,"projector":10002}}}}],"clusterCapabilitiesVer":[1,0],"clusterCapabilities":{"n1ql":["enhancedPreparedStatements"]}}
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curl: (18) transfer closed with outstanding read data remaining
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vs 7.0, the last nodeServices update still includes n_0:
$ curl -u couchbase:couchbase http://localhost:9001/pools/default/nodeServicesStreaming
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{"rev":22,"nodesExt":[{"services":{"capi":9501,"capiSSL":19501,"kv":12002,"kvSSL":11994,"mgmt":9001,"mgmtSSL":19001,"projector":10001},"thisNode":true,"hostname":"192.168.1.236"}],"clusterCapabilitiesVer":[1,0],"clusterCapabilities":{"n1ql":["enhancedPreparedStatements"]}}
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...
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{"rev":141,"nodesExt":[{"services":{"capi":9501,"capiSSL":19501,"kv":12002,"kvSSL":11994,"mgmt":9001,"mgmtSSL":19001,"projector":10001},"thisNode":true,"hostname":"192.168.1.236","alternateAddresses":{"external":{"hostname":"0.0.0.0","ports":{"mgmt":9001,"mgmtSSL":19001,"kv":12002,"kvSSL":11994,"capi":9501,"capiSSL":19501,"projector":10001,"projector":10001}}}},{"services":{"capi":9502,"capiSSL":19502,"kv":12004,"kvSSL":11990,"mgmt":9002,"mgmtSSL":19002,"projector":10002},"hostname":"192.168.1.236","alternateAddresses":{"external":{"hostname":"0.0.0.0","ports":{"mgmt":9002,"mgmtSSL":19002,"kv":12004,"kvSSL":11990,"capi":9502,"capiSSL":19502,"projector":10002,"projector":10002}}}}],"clusterCapabilitiesVer":[1,0],"clusterCapabilities":{"n1ql":["enhancedPreparedStatements"]}}
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curl: (18) transfer closed with outstanding read data remaining
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Attachments
Issue Links
- blocks
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MB-45263 [CX] ClusterCbRemoteLinksLifecycleIT 1: lifecycle: alternate-address-rebalance-out
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- Resolved
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