kubectl get
- Docker & Kubernetes course
- Intermediate
- Lesson 14/82
- 4 min
Learn to list resources with kubectl get.
kubectl get
kubectl get lists objects as a table. The output format changes with -o:
kubectl get pods # table
kubectl get pods -o wide # IP and node columns
kubectl get pod web-abc -o yaml # full definition
kubectl get pods -o name # in the form pod/web-abc
kubectl get deploy,svc # several types-o yaml also shows the fields Kubernetes added to the object (status, uid, timestamps).
JSONPath and custom columns
For scripts, a single field is taken with -o jsonpath, and readable tables with -o custom-columns:
$ kubectl get pods -o jsonpath='{.items[*].metadata.name}'
web-abc web-def
$ kubectl get pods -o custom-columns=AD:.metadata.name,NODE:.spec.nodeName
AD NODE
web-abc worker-1
web-def worker-2Practice Select the fields
Write two commands: list the deployments and services in one command; then print the names of all pods with jsonpath='{.items[*].metadata.name}'.
Starter code
# buraya yazSample solution
kubectl get deploy,svc
kubectl get pods -o jsonpath='{.items[*].metadata.name}'Expected output
NAME READY UP-TO-DATE AVAILABLE AGE deployment.apps/web 2/2 2 2 1h NAME TYPE CLUSTER-IP PORT(S) AGE service/kubernetes ClusterIP 10.96.0.1 443/TCP 2d web-7c5b9f6d8-abcde web-7c5b9f6d8-fghij
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 Which shows an object's full YAML definition in the cluster?
- kubectl show TYPE NAME
- kubectl get TYPE NAME -o yaml Correct answer
- kubectl yaml TYPE NAME
- kubectl get -yaml
Explanation: -o json gives the same information as JSON.
2 Get the pod's full definition as YAML.
Question
kubectl get pod web-abc -o ____
Answer
kubectl get pod web-abc -o yamlExplanation: -o yaml gives the whole object.
3 Match the formats.
| Term | Meaning |
|---|---|
-o wide |
Extra columns |
-o yaml |
Full definition |
-o name |
type/name list |
-o jsonpath |
Single field selection |