Kubernetes how to get error messages/logs

@christianstrang If you’re wanting to look inside the container and view its logs, you can do one of the following:

Using Docker

shell into container

docker run --rm -it <image-name> bash

view container’s logs

docker logs <container-name>

Note: If you’re using Alpine based image, you will need to use sh instead of bash.

Using Kubernetes

shell into container

kubectl exec -i -t <pod-name> --container <container-name> -- /bin/bash

Note: If you’re using Alpine based image, you will need to use sh instead of bash.

view container’s logs

kubectl logs <pod-name> -c <container-name>  

Note: A Kubernetes pod can consist of 1 or more running containers. Also, I would recommend taking a look at a tool called stern for viewing logs within K8s cluster.

Next, you can use K8s ConfigMaps for your environment variables and K8s Secrets for your sensitive credentials. Finally, I would highly recommend testing your Docker container(s) prior to using them within your K8s cluster.

Well, I wish that the above information was helpful and I wish you all the best.

–

Think different and code well,

-Conrad