Kibana server not ready yet: ValidationError: child "elasticsearch" fails because [child "hosts" fails because ["hosts" at position 0 fails because ["0" must be a string]]]

[amin.nugroho]

Hi,
I am setting up a production cluster with version 6.6.0.1 as follows:
3 elastic nodes all as master, ingest, data
1 kibana node with elastic in it as elastic load balancer (master,ingest,data: false)
1 apm, 1 logstash

I am getting: Kibana server is not ready yet

Kibana Log:
Feb 14 12:10:04 kibana.bps.go.id systemd[1]: Started Kibana.
Feb 14 12:10:19 kibana.bps.go.id kibana[7720]: {"type":"log","@timestamp":"2019-02-14T05:10:19Z","tags":["plugin","warning"],"pid":7720,"path":"/usr/share/kibana/src/legacy/core_plugins/ems_util","message":"Skipping non-plugin directory at /usr/share/kibana/src/legacy/core_plugins/ems_util"}
Feb 14 12:10:21 kibana.bps.go.id kibana[7720]: {"type":"log","@timestamp":"2019-02-14T05:10:21Z","tags":["fatal","root"],"pid":7720,"message":"{ ValidationError: child "elasticsearch" fails because [child "hosts" fails because ["hosts" at position 0 fails because ["0" must be a string]]]\n at Object.exports.process (/usr/share/kibana/node_modules/joi/lib/errors.js:196:19)\n at internals.Object._validateWithOptions (/usr/share/kibana/node_modules/joi/lib/types/any/index.js:675:31)\n at module.exports.internals.Any.root.validate (/usr/share/kibana/node_modules/joi/lib/index.js:146:23)\n at Config._commit (/usr/share/kibana/src/server/config/config.js:139:35)\n at Config.set (/usr/share/kibana/src/server/config/config.js:108:10)\n at Config.extendSchema (/usr/share/kibana/src/server/config/config.js:81:10)\n at extendConfigService (/usr/share/kibana/src/plugin_discovery/plugin_config/extend_config_service.js:45:10) name: 'ValidationError' }"}
Feb 14 12:10:21 kibana.bps.go.id kibana[7720]: FATAL ValidationError: child "elasticsearch" fails because [child "hosts" fails because ["hosts" at position 0 fails because ["0" must be a string]]]
Feb 14 12:10:21 kibana.bps.go.id systemd[1]: kibana.service: main process exited, code=exited, status=1/FAILURE
Feb 14 12:10:21 kibana.bps.go.id systemd[1]: Unit kibana.service entered failed state.
Feb 14 12:10:21 kibana.bps.go.id systemd[1]: kibana.service failed.
Feb 14 12:10:22 kibana.bps.go.id systemd[1]: kibana.service holdoff time over, scheduling restart.
Feb 14 12:10:22 kibana.bps.go.id systemd[1]: Stopped Kibana.
Feb 14 12:10:22 kibana.bps.go.id systemd[1]: Started Kibana.

Elasticsearch cluster health:
https://gist.githubusercontent.com/sinunk/e8a14a72fc52a861dd76aabe74502086/raw/47d306e881a132253afae1b904cca705c22ca99e/elastic-cluster-health.md

Thank you for your help

[tsullivan (Tim Sullivan)]

Hi, this error message is self explanatory and indicates you need to check your kibana.yml settings.

ValidationError: child "elasticsearch" fails because [child "hosts" fails because ["hosts" at position 0 fails because ["0" must be a string]]]

See the documentation for elasticsearch.hosts in https://www.elastic.co/guide/en/kibana/current/settings.html. The value type is a list of strings

[amin.nugroho]

Thanks, it turns out elastic.url is deperecated in 6.6
Now it's elasticsearch.hosts