Debugging service connectivity in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to check the status of all pods in the default namespace.

Kubernetes

kubectl get [1]

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Adeployments

Bservices

Cnodes

Dpods

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'services' instead of 'pods' will list services, not pods.

Using 'nodes' lists cluster nodes, not pods.

The command kubectl get pods lists all pods, which helps check if they are running properly.

2fill in blank

medium

Complete the command to describe a service named 'webapp' to check its details.

Kubernetes

kubectl [1] service webapp

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Adescribe

Blogs

Cget

Dexec

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'get' only lists basic info.

Using 'logs' or 'exec' are for pods, not services.

The describe command shows detailed information about the service, including endpoints and events.

3fill in blank

hard

Fix the error in the command to check logs of a pod named 'api-server'.

Kubernetes

kubectl logs [1]

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Aapi-server

Bapi_server

Capi-server-1

Dapi.server

Attempts:

3 left

💡 Hint

Common Mistakes

Using underscores or dots in pod names causes errors.

Using incomplete or wrong pod names.

The pod name must match exactly. 'api-server' is the correct pod name without underscores or dots.

4fill in blank

hard

Fill both blanks to create a command that tests connectivity from a pod named 'tester' to the service 'backend' on port 80.

Kubernetes

kubectl exec [1] -- curl [2]:80

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Atester

Bbackend

Cfrontend

Dlocalhost

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong pod or service names.

Trying to curl 'localhost' which tests the pod itself, not the service.

Use kubectl exec tester to run commands inside the 'tester' pod, and curl the 'backend' service on port 80 to check connectivity.

5fill in blank

hard

Fill all three blanks to create a command that lists pods with label 'app=web' in the 'production' namespace.

Kubernetes

kubectl get pods -n [1] -l [2]=[3]

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Adefault

Bapp

Cweb

Dproduction

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong namespace or label keys/values.

Forgetting the '=' between label key and value.

The namespace is 'production', the label key is 'app', and the label value is 'web'. This command filters pods by label in the specified namespace.