Task Summary

SSH into the correct node: cka000049

Find the highest existing user-defined PriorityClass

Create a new PriorityClass high-priority with a value one less

Patch Deployment busybox-logger (in namespace priority) to use this new PriorityClass

Step-by-Step Solution

1️⃣ SSH into the correct node

bash

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ssh cka000049

⚠️ Skipping this = zero score

2️⃣ Find the highest existing user-defined PriorityClass

Run:

bash

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kubectl get priorityclasses.scheduling.k8s.io

Example output:

vbnet

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NAME VALUE GLOBALDEFAULT AGE

default-low 1000 false 10d

mid-tier 2000 false 7d

critical-pods 1000000 true 30d

Exclude system-defined classes like system-* and the default global one (e.g., critical-pods).

Let's assume the highest user-defined value is 2000.

So your new class should be:

Value = 1999

3️⃣ Create the high-priority PriorityClass

Create a file called high-priority.yaml:

cat < high-priority.yaml

apiVersion: scheduling.k8s.io/v1

kind: PriorityClass

metadata:

name: high-priority

value: 1999

globalDefault: false

description: "High priority class for user workloads"

EOF

Apply it:

kubectl apply -f high-priority.yaml

4️⃣ Patch the busybox-logger deployment

Now patch the existing Deployment in the priority namespace:

kubectl patch deployment busybox-logger -n priority \

--type='merge' \

-p '{"spec": {"template": {"spec": {"priorityClassName": "high-priority"}}}}'

5️⃣ Verify your work

Confirm the patch was applied:

kubectl get deployment busybox-logger -n priority -o jsonpath='{.spec.template.spec.priorityClassName}'

✅ You should see:

high-priority

Also, confirm the class exists:

kubectl get priorityclass high-priority

Final Command Summary

ssh cka000049

kubectl get priorityclass

# Create the new PriorityClass

cat < high-priority.yaml

apiVersion: scheduling.k8s.io/v1

kind: PriorityClass

metadata:

name: high-priority

value: 1999

globalDefault: false

description: "High priority class for user workloads"

EOF

kubectl apply -f high-priority.yaml

# Patch the deployment

kubectl patch deployment busybox-logger -n priority \

--type='merge' \

-p '{"spec": {"template": {"spec": {"priorityClassName": "high-priority"}}}}'

# Verify

kubectl get deployment busybox-logger -n priority -o jsonpath='{.spec.template.spec.priorityClassName}'

kubectl get priorityclass high-priority