Troubleshoot: Using BusyBox

To check if your application is working using BusyBox in Kubernetes, you can use BusyBox as a test pod to:

• Ping your app
• Curl a service
• Test DNS resolution
• Access internal services

Step-by-Step: Use BusyBox to Check Your Application

Run a BusyBox Pod

kubectl run busybox --image=busybox:1.28 --restart=Never -it -- sh

This command will:

• Create a one-off pod using the BusyBox image
• Open an interactive shell in that pod

If you’re using Minikube and want DNS working, ensure coredns is running (kubectl get pods -n kube-system).

Use BusyBox to Test Connectivity

Once you’re inside the pod shell:

# Ping a service by name (replace with your app service)
ping my-service-name
 
# Or test with wget if available
wget http://my-service-name
 
# If using curl (BusyBox must be built with it)
curl http://my-service-name:port
 
# DNS test
nslookup my-service-name

Exit the Pod

exit

Then delete the pod:

kubectl delete pod busybox

Tip: Use --namespace if your app is not in default

kubectl run busybox -n my-namespace --image=busybox:1.28 --restart=Never -it -- sh