Prerequisites
Assignment
1️⃣ Lets start by creating a pod and verify the default labels.
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| kubectl run nginx --image nginx --port 80 -o yaml --dry-run=client
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| kubectl run nginx --image nginx --port 80
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2️⃣ Expose the pod based on the labels (check the yaml definition)).
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| kubectl expose pod/nginx --dry-run=client -o yaml
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| kubectl expose pod/nginx
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| kubectl get all --selector run=nginx
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3️⃣ Create Pod with different labels and query them using selectors.
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| cat <<EOF > coloured_pods.yaml
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
run: ubuntu
colour: red
name: ubuntu-red
spec:
containers:
- command:
- sleep
- infinity
image: ubuntu
name: ubuntu
resources: {}
dnsPolicy: ClusterFirst
restartPolicy: Always
status: {}
---
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
run: ubuntu
colour: green
name: ubuntu-green
spec:
containers:
- command:
- sleep
- infinity
image: ubuntu
name: ubuntu
resources: {}
dnsPolicy: ClusterFirst
restartPolicy: Always
status: {}
---
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
run: ubuntu
colour: pink
name: ubuntu-pink
spec:
containers:
- command:
- sleep
- infinity
image: ubuntu
name: ubuntu
resources: {}
dnsPolicy: ClusterFirst
restartPolicy: Always
status: {}
EOF
|
1
| kubectl apply -f coloured_pods.yaml
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1
| kubectl get pods -o wide
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1
| kubectl get all --selector colour=green
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| kubectl get all -l colour=green
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4️⃣ CleanUp the resources
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| kubectl delete pod/nginx service/nginx pod/ubuntu-red pod/ubuntu-green pod/ubuntu-pink --now
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