kibana logs:
{"type":"log","@timestamp":"2019-04-25T20:43:58Z","tags":["status","plugin:beats_management@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"red","prevMsg":"Service Unavailable"}
{"type":"log","@timestamp":"2019-04-25T20:43:58Z","tags":["status","plugin:maps@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"red","prevMsg":"Service Unavailable"}
{"type":"log","@timestamp":"2019-04-25T20:43:58Z","tags":["status","plugin:index_management@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"red","prevMsg":"Service Unavailable"}
{"type":"log","@timestamp":"2019-04-25T20:43:58Z","tags":["status","plugin:index_lifecycle_management@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"red","prevMsg":"Service Unavailable"}
{"type":"log","@timestamp":"2019-04-25T20:43:58Z","tags":["status","plugin:rollup@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"red","prevMsg":"Service Unavailable"}
{"type":"log","@timestamp":"2019-04-25T20:43:58Z","tags":["status","plugin:remote_clusters@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"red","prevMsg":"Service Unavailable"}
{"type":"log","@timestamp":"2019-04-25T20:43:58Z","tags":["status","plugin:cross_cluster_replication@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"red","prevMsg":"Service Unavailable"}
{"type":"log","@timestamp":"2019-04-25T20:43:59Z","tags":["status","plugin:reporting@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from uninitialized to red - [data] Elasticsearch cluster did not respond with license information.","prevState":"uninitialized","prevMsg":"uninitialized"}
{"type":"log","@timestamp":"2019-04-25T20:44:32Z","tags":["status","plugin:spaces@6.7.0","error"],"pid":20008,"state":"red","message":"Status changed from red to red - Request Timeout after 30000ms","prevState":"red","prevMsg":"[data] Elasticsearch cluster did not respond with license information."}
{"type":"log","@timestamp":"2019-04-25T20:44:32Z","tags":["fatal","root"],"pid":20008,"message":"{ Error: Request Timeout after 30000ms\n at /usr/share/kibana/node_modules/elasticsearch/src/lib/transport.js:355:15\n at Timeout. (/usr/share/kibana/node_modules/elasticsearch/src/lib/transport.js:384:7)\n at ontimeout (timers.js:436:11)\n at tryOnTimeout (timers.js:300:5)\n at listOnTimeout (timers.js:263:5)\n at Timer.processTimers (timers.js:223:10)\n status: undefined,\n displayName: 'RequestTimeout',\n message: 'Request Timeout after 30000ms',\n body: undefined,\n isBoom: true,\n isServer: true,\n data: null,\n output:\n { statusCode: 503,\n payload:\n { statusCode: 503,\n error: 'Service Unavailable',\n message: 'Request Timeout after 30000ms' },\n headers: {} },\n reformat: [Function],\n [Symbol(SavedObjectsClientErrorCode)]: 'SavedObjectsClient/esUnavailable' }"}