Prometheus dashboard exposed over alb-ingress-controller is not loading fully

[vikram yerneni]

Fellas, I am using Helm/Stable/Prometheus Server for my Metrics datasource and the Prometheus Server Dashboard is exposed using alb-ingress controller in AWS. Somehow the prometheus webpage is not loading fully (few parts of the webpage are not getting loaded and throwing 404 errors). Here is the Ingress configuration

    ingress: 
    ## If true, Prometheus server Ingress will be created

    ##

    enabled: true

    ## Prometheus server Ingress annotations

    ##

    annotations:

       kubernetes.io/ingress.class: 'alb'

       #kubernetes.io/tls-acme: 'true'

       alb.ingress.kubernetes.io/scheme: internet-facing

       alb.ingress.kubernetes.io/load-balancer-attributes: 'routing.http2.enabled=true,idle_timeout.timeout_seconds=60'

       alb.ingress.kubernetes.io/certificate-arn: certname

       alb.ingress.kubernetes.io/listen-ports: '[{"HTTP": 80}, {"HTTPS":443}]'

       alb.ingress.kubernetes.io/actions.ssl-redirect: '{"Type": "redirect", "RedirectConfig": { "Protocol": "HTTPS", "Port": "443", "StatusCode": "HTTP_301"}}'

    service:

      annotations:

        alb.ingress.kubernetes.io/target-type: ip

    labels: {}

    path: /*

    hosts:

       - prometheus.company.com

    ## Extra paths to prepend to every host configuration. This is useful when working with annotation based services.

    extraPaths:

     - path: /*

       backend:

         serviceName: ssl-redirect

         servicePort: use-annotation

When I access prometheus.company.com, its getting properly redirected to prometheus.company.com/graph (assuming the redirect is working fine). However, some parts (*.js & *.css files) of the webpage is throwing 404 errors Anyone been through this issue before and if so, how y'all got it resolved?

This configuration is set in the values.yaml file: https://github.com/helm/charts/blob/master/stable/prometheus/values.yaml

Cheers!

[Murali Krishna Kanagala]

Try setting the --web.external-url in the container arguments.

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[vikram yerneni]

Hi Murali, the container gets created by Helm charts. Let me see if I can modify the values here.

However, the page is loading (I just want to reiterate here). Its just the additional *.css & *.js files are not loading...

Thanks

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[Murali Krishna Kanagala]

You can add the arguments here.

https://github.com/helm/charts/blob/master/stable/prometheus/values.yaml#L615

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[vikram yerneni]

I tried to add it over here Murali: https://github.com/helm/charts/blob/master/stable/prometheus/values.yaml#L555

It did nothing... Still same...

Thanks again for helping me dude... 

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[vikram yerneni]

Actually, I fixed the issue Murali.

I added the /* after the url defined under hosts section and it worked like charm...

Thanks

[Murali Krishna Kanagala]

Nice! Here are some more details about the web external url flag

https://www.robustperception.io/using-external-urls-and-proxies-with-prometheus

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[vikram yerneni]

Thanks man...

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