Kibana randomly giving 502 bad gateway error

Elastic Stack Kibana
1

Hi,

I am run EFK stack on Kubernetes for logging. For elasticseach we have 2 data, 1 master and 1 client node. Everything is working fine but i randomly get 502 bad gateway error.

From dashboard:

Discover: Bad Gateway

SearchError: Bad Gateway
    at https://kibana.logging.stakater.com/bundles/kibana.bundle.js:2:579398
    at processQueue (https://kibana.logging.stakater.com/built_assets/dlls/vendors.bundle.dll.js:307:199687)
    at https://kibana.logging.stakater.com/built_assets/dlls/vendors.bundle.dll.js:307:200650
    at Scope.$digest (https://kibana.logging.stakater.com/built_assets/dlls/vendors.bundle.dll.js:307:210412)
    at Scope.$apply (https://kibana.logging.stakater.com/built_assets/dlls/vendors.bundle.dll.js:307:213219)
    at done (https://kibana.logging.stakater.com/built_assets/dlls/vendors.bundle.dll.js:307:132717)
    at completeRequest (https://kibana.logging.stakater.com/built_assets/dlls/vendors.bundle.dll.js:307:136329)
    at XMLHttpRequest.requestLoaded (https://kibana.logging.stakater.com/built_assets/dlls/vendors.bundle.dll.js:307:135225)

Endpoint triggered that is giving error:
https://kibana.logging.stakater.com/elasticsearch/_msearch?rest_total_hits_as_int=true&ignore_throttled=true

I have updated my nginx configuration etc. but still unable to resolve this.

P.s. Let me know if more information is required from my side

2

Hey @ahmedwaleedmalik, do your Kibana logs contain additional information regarding the error? Also, if you capture a HAR of the request which is causing the 502, it'll help us diagnose further.