unsupported ES version should spit out a useful error

[wyardley]

Given that the ES version is trivial to get, Kibana should spit out a useful error message (i.e., "You're running an unsupported version of Elasticsearch; please consult https://www.elastic.co/support/matrix#show_compatibility") rather than "Error: Unknown error".

For example, Kibana 4.1.1 talking to ES 2.1.1 gives:
{"name":"Kibana","hostname":"xxx","pid":18465,"level":50,"err":{"message":"unknown error","name":"Error","stack":"Error: unknown error\n at respond (/opt/kibana/src/node_modules/elasticsearch/src/lib/transport.js:237:15)\n at checkRespForFailure (/opt/kibana/src/node_modules/elasticsearch/src/lib/transport.js:203:7)\n at HttpConnector.<anonymous> (/opt/kibana/src/node_modules/elasticsearch/src/lib/connectors/http.js:156:7)\n at IncomingMessage.bound (/opt/kibana/src/node_modules/elasticsearch/node_modules/lodash-node/modern/internals/baseBind.js:56:17)\n at IncomingMessage.emit (events.js:117:20)\n at _stream_readable.js:944:16\n at process._tickCallback (node.js:442:13)"},"msg":"","time":"2016-01-29T18:53:45.740Z","v":0}
(or slightly different error if the .kibana index exists).

[epixa]

I have to confirm, but I'm pretty sure newer versions of Kibana do provide a useful error message.

[wyardley]

Thanks... have not tested with 4.2 or 4.3 yet.

[epixa]

Here's the error message in 4.1.4:

[wyardley]

Thank you @epixa. Just FWIW, kibana-4.1.4 (or anything >1) does not appear to be available in RPM format via the official 4.1 repo.

[epixa]

That is correct - there was never any official coordinated effort to maintain the rpm distribution, it was just a single person going the extra mile. We're going to try to start coordinating it more officially starting in 4.4.0.