[.kibana_task_manager] Action failed with ‘Request timed out’

Continuing the discussion from [.kibana_task_manager] Action failed with 'Request timed out':

I have deployed Elasticsearch & Kibana on a Kubernetes cluster. I am also facing similar issue when we restart the Kibana., I get above error while startup .. As mentioned in the trailing thread i did a curl

curl -X GET "http://elasticip:port/.kibana,.kibana_7.13.4?ignore_unavailable=true" and i get result as below..

{".kibana_7.16.3_001":{"aliases":{".kibana":{},".kibana_7.16.3":{}},"mappings":{"dynamic":"strict","_meta":{"migrationMappingPropertyHashes":{"visualization":"f819cf6636b75c9e76ba733a0c6ef355","endpoint:user-artifact":"4a11183eee21e6fbad864f7a30b39ad0","references":"7997cf5a56cc02bdc9c93361bde732b0","graph-workspace":"27a94b2edcb0610c6aea54a7c56d7752","file-upload-usage-collection-telemetry":"a34fbb8e3263d105044869264860c697","ml-job":"3bb64c31915acf93fc724af137a0891b","epm-packages":"9e8ba2a3c9f8b385970c7c7eb5f3652b","cases-connector-mappings":"17d2e9e0e170a21a471285a5d845353c","type":"2f4316de49999235636386fe51dc06c1","ui-counter":"0d409297dc5ebe1e3a1da691c6ee32e3","osquery-manager-usage-metric":"4dc4f647d27247c002f56f22742175fe","space":"c5ca8acafa0beaa4d08d014a97b6bc6b","infrastructure-ui-source":"3d1b76c39bfb2cc8296b024d73854724","api_key_pending_invalidation":"16f515278a295f6245149ad7c5ddedb7","ingest_manager_settings":"f159646d76ab261bfbf8ef504d9631e4","event_loop_delays_daily":"5df7e292ddd5028e07c1482e130e6654","application_usage_totals":"3d1b76c39bfb2cc8296b024d73854724","spaces-usage-stats":"3d1b76c39bfb2cc8296b024d73854724","osquery-pack":"1137eea2d805fc1039870fb33cab367a","action":"38c91d092e0790ecd9ebe58e82145280","tag":"83d55da58f6530f7055415717ec06474","dashboard":"40554caf09725935e2c02e02563a2d07","metrics-explorer-view":"3d1b76c39bfb2cc8296b024d73854724","siem-detection-engine-rule-actions":"ec8a5cc503fc8cd151a2463190e4e425","security-solution-signals-migration":"72761fd374ca11122ac8025a92b84fca","apm-server-schema":"b1d71908f324c17bf744ac72af5038fb","query":"11aaeb7f5f7fa5bb43f25e18ce26e7d9","application_usage_transactional":"3d1b76c39bfb2cc8296b024d73................

@rudolf can you help with the followup on this? Thanks!

@ndinesh-aie Can you please share the complete Kibana logs?