How to get AKS logs generated by hosted webapplication

Question

Hi Team,

Is there any way to get location of AKS logs files of web application deployed in AKS.

Actually, Grafana Loki is getting logs, but wanted to know from which location grafana loki is getting logs.

Thanks

Kalyan

Answer 1

Hello Kalyan Gandham,

Thanks for your question.

Grafana Loki logs are usually gotten from the container logs. With Grafana loki, the typical workflow involves applications writing logs to standard output (stdout) or standard error (stderr), and then a log collection agent like Fluentd or Logstash sidecar container captures and ships them to a centralized location (Loki in this instance)

See an example architecture: https://learn.microsoft.com/en-us/azure/architecture/microservices/logging-monitoring

Please let me know if you have further questions**

You can mark it 'Accept Answer' if this helped.

Answer 2

Hello Kalyan Gandham

Welcome to Microsoft Q&A Platform, thanks for posting your query here.

Container logs in AKS (and Kubernetes in general) are written to the node's filesystem under var/log/containers
If you are using Grafana Loki to collect logs from your AKS cluster, it is likely that it is using the Kubernetes API to access the logs. The logs are stored in the var/log/containers directory on each node in the cluster.

SSH into your AKS nodes and check the var/log/containers directory to verify if the logs are stored there.

Use kubectl to describe your pods and check events/logs to see how logging is configured:

kubectl describe pod <your-pod-name> -n <your-namespace>

Hope this helps.