topic Re: No response from apache to nginx in Alerting

No response from apache to nginx

tchatzi — Wed, 02 Apr 2025 06:55:59 GMT

In kubernetes I have a pod with nginx and a pod with apache. Requests come from outside clients to nginx, nginx response all static files (js, css,jpg) and all api calls are being proxy passed to apache pod. Everything warks great untill I install dynatrace and redeploy my pods. Then all static files work great but the api calls that are being proxy passed to apache fail. No errors, just nginx dies. Ningx does not get any response from apache.
I used the following to nginx

dynatrace.com/inject: 'false' metadata-enrichment.dynatrace.com/inject: 'false' oneagent.dynatrace.com/inject: 'false'

I redeployed and nginx does get the response from apache pod, but the json is truncated.
If i disable dynatrace for apache as well using the above lines everything work fine.

Is there anyone that can share any thoughts, Thanks for your time and consideration.

Re: No response from apache to nginx

Mizső — Tue, 01 Apr 2025 15:04:54 GMT

Hi @tchatzi

Have checked the nginx support matrix?

https://docs.dynatrace.com/docs/shortlink/nginx-binaries#nginx-versions

Best regards,

János

Re: No response from apache to nginx

tchatzi — Tue, 01 Apr 2025 16:02:14 GMT

my nginx version is 1.20.2 which is supposed to be working

Re: No response from apache to nginx

Mizső — Wed, 02 Apr 2025 14:03:15 GMT

Hi @tchatzi ,

YES, this version is supported based on the matrix. Unfortunately I do not have any other idea.

Could you please raise a support ticket?

Best regards,

János

Re: No response from apache to nginx

Romanenkov_Al3x — Wed, 02 Apr 2025 15:07:58 GMT

Hi! Hope your hump day is going great!

If you are interested in service level monitoring you can try to disable sensor on process group - if there is such process group - nginx. Easiest way to find it on smartscape - you can use search.

You can drill down to process group settings and try to disable this checkbox.

Also you can try to disable specific sensor in OneAgent features, try filter with 'webserver' sensor.

If this is public image - nice to share it / We can add more recomendations / reproduce at our env.

Also you can try to add:

Settings > Processes and containers > Custom process monitoring rules

apiVersion: apps/v1 kind: Deployment metadata: name: web-servers spec: replicas: 1 selector: matchLabels: app: web-servers template: metadata: labels: app: web-servers spec: containers: - name: apache image: httpd:latest ports: - containerPort: 80 - name: nginx image: nginx:latest ports: - containerPort: 80 env: - name: DOG value: "CORGI"

If nothing helps, it's best to create a support ticket as recommended by @Mizső

Regards,

Aleksandr