back to GunicornPrometheusMetrics, CollectorRegistry, port 9200

[charlienegri]

Summary: this again for me exposes all the metrics at port 9200 when I run the container with docker....

Related issue: #220

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[charlienegri]

@magnarem if this does not work I am out of ideas, this works for me locally, again

[charlienegri]

will need this too https://gitlab.met.no/tjenester/s-enda/-/merge_requests/2930

[charlienegri]

Approved. And merged. Le'ts hope this works now.

If not, I bet the issue is related to the wsgi.py file. Since the gunicorn process loads wsgi:appthen in the wsgi.py file, I am not sure if the lines after app = App() is then loaded by gunicorn.

Also in the statefulset.yml for dmci in the tjenester-repo. The gunicorn command from the Dockerfile is overrided, so you will probably need to add the -c /src/gunicorn_prometheus_config.py to the command: for the dmci container in the statefulset.yml too. And make sure the 9200 is exposded and scraped

we got the flask metrics exposed correctly at the 9200 port tho initially, before I implemente the custom ones, so I think that the GunicornPrometheusMetrics() or variants of it in wsgi.py works, but the problem is having both those default ones and the custom one exposed at the same port and by the same collector

[charlienegri]

mmh /src/gunicorn_prometheus_config.py' doesn't exist
I must have merged too fast on the other side, restarted the pod now

[magnarem]

yeah. you probably not need this copy statement. Since the gunicorn_prometheus_config.py resides in container/ folder together with the wsgi.py both files are copied to root, so you will not need this line COPY container/gunicorn_prometheus_config.py /src

and then the gunicorn command should work with:

CMD gunicorn -c gunicorn_prometheus_config.py --worker-class sync --workers 5 --bind 0.0.0.0:8000 wsgi:app --keep-alive 5 --log-level info

Also I see no problem with our custom metrics (the failed dist) you implemented is exposed on different port than the other prometheus flask metrics. You can have multiple annotations for scraping in kubernetes I imagine.

[magnarem]

Also for the 9200 Port, you will probably have to add a special ingress in the ingress.yml in the dmci base folder.

 rules:
    - host: "dmci.s-enda.k8s.met.no"
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: dmci
                port:
                  name: http
        - path:/flask-metrics
         pathType: Prefix?
         backend:
         service:
           name: dmci
           port:
             name: http-flask-metrics

         and then in statefulset

         ```
           ports:
        - name: http
          containerPort: 8000
          protocol: TCP
     - name: http-flask-metrics
       port: 9200
       protocol: TCP
       ``

[charlienegri]

the exposure of 9200 in the statefulset is already there, I had added it, removed it and added it back after last update
the endpoint seems also to have everything now, I am happy with this finally --> https://dmci.s-enda-dev.k8s.met.no/metrics

[charlienegri]

yeah. you probably not need this copy statement. Since the gunicorn_prometheus_config.py resides in container/ folder together with the wsgi.py both files are copied to root, so you will not need this line COPY container/gunicorn_prometheus_config.py /src

and then the gunicorn command should work with:

CMD gunicorn -c gunicorn_prometheus_config.py --worker-class sync --workers 5 --bind 0.0.0.0:8000 wsgi:app --keep-alive 5 --log-level info

Also I see no problem with our custom metrics (the failed dist) you implemented is exposed on different port than the other prometheus flask metrics. You can have multiple annotations for scraping in kubernetes I imagine.

gunicorn_prometheus_config.py is indeed in the root folder of the container so as you say we can skip the copy to src step

[charlienegri]

w̶h̶i̶l̶e̶ ̶l̶o̶o̶k̶i̶n̶g̶ ̶a̶t̶ ̶t̶h̶e̶ ̶f̶e̶d̶e̶r̶a̶t̶e̶d̶ ̶m̶e̶t̶r̶i̶c̶s̶ ̶I̶ ̶s̶e̶e̶ ̶s̶o̶m̶e̶ ̶i̶n̶c̶o̶n̶s̶i̶s̶t̶e̶n̶c̶i̶e̶s̶.̶.̶ ̶I̶ ̶f̶e̶a̶r̶ ̶t̶h̶e̶ ̶e̶x̶p̶o̶s̶u̶r̶e̶ ̶m̶i̶g̶h̶t̶ ̶h̶a̶p̶p̶e̶n̶ ̶o̶n̶ ̶o̶n̶e̶ ̶i̶n̶s̶t̶a̶n̶c̶e̶ ̶o̶n̶l̶y̶ ̶:̶/̶ ̶.̶.̶ ̶t̶h̶i̶s̶ ̶m̶i̶g̶h̶t̶ ̶b̶e̶ ̶d̶u̶e̶ ̶t̶o̶ ̶t̶h̶e̶ ̶u̶s̶e̶ ̶o̶f̶ ̶G̶u̶n̶i̶c̶o̶r̶n̶P̶r̶o̶m̶e̶t̶h̶e̶u̶s̶M̶e̶t̶r̶i̶c̶s̶ ̶i̶n̶s̶t̶e̶a̶d̶ ̶o̶f̶ ̶G̶u̶n̶i̶c̶o̶r̶n̶I̶n̶t̶e̶r̶n̶a̶l̶P̶r̶o̶m̶e̶t̶h̶e̶u̶s̶M̶e̶t̶r̶i̶c̶s̶?̶ ̶s̶e̶e̶ ̶h̶t̶t̶p̶s̶:̶/̶/̶g̶i̶t̶h̶u̶b̶.̶c̶o̶m̶/̶r̶y̶c̶u̶s̶8̶6̶/̶p̶r̶o̶m̶e̶t̶h̶e̶u̶s̶̶f̶l̶a̶s̶k̶̶e̶x̶p̶o̶r̶t̶e̶r̶/̶b̶l̶o̶b̶/̶m̶a̶s̶t̶e̶r̶/̶e̶x̶a̶m̶p̶l̶e̶s̶/̶g̶u̶n̶i̶c̶o̶r̶n̶-̶m̶u̶l̶t̶i̶p̶r̶o̶c̶e̶s̶s̶-̶1̶0̶9̶/̶s̶e̶r̶v̶e̶r̶.̶p̶y̶ ̶b̶u̶t̶ ̶i̶n̶ ̶m̶y̶ ̶p̶r̶e̶v̶i̶o̶u̶s̶ ̶a̶t̶t̶e̶m̶p̶t̶ ̶t̶o̶ ̶u̶s̶e̶ ̶t̶h̶a̶t̶ ̶t̶h̶a̶n̶ ̶w̶e̶ ̶w̶e̶r̶e̶ ̶m̶i̶s̶s̶i̶n̶g̶ ̶t̶h̶e̶ ̶f̶l̶a̶s̶k̶ ̶s̶t̶a̶n̶d̶a̶r̶d̶ ̶m̶e̶t̶r̶i̶c̶s̶ this might be correct after all, one instance only is consistent with the catalog-rebuilder-flask