CKA EXAM QS-5 2025

Update existing Deployment synergy-leverager, adding a co-located container named sidecar using the busybox:stable image to the existing Pod.

The new co-located container has to run the following command:

# /bin/sh -c "tail n+1 -f /var/log/synergy-leverager.log"

Use a Volume mounted at /var/log to make the log file synergy-leverager.log available to the co-locator container.

Do not modify the specification of the existing container other then adding the required volume mount:

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1) Backup (you already had this — repeat safe)

kubectl get deployment synergy-leverager -o yaml > synergy-leverager.yaml

vi synergy-leverage.yaml

# --- paste/replace only the template.spec part in your existing Deployment YAML ---

template:

metadata:

# keep existing labels/annotations here if present

spec:

volumes:

- name: varlog

emptyDir: {}

containers:

- name: monitor

image: ifcert/monitor:latest

ports:

- containerPort: 80

name: http

protocol: TCP

env:

- name: LOG_FILENAME

value: /var/log/synergy-leverager.log

# ONLY add this volumeMount to the existing container (no other changes)

volumeMounts:

- name: varlog

mountPath: /var/log

- name: sidecar

image: busybox:stable

command:

- /bin/sh

- -c

- tail -n +1 -f /var/log/synergy-leverager.log

# keep sidecar lightweight; mount the same volume

volumeMounts:

- name: varlog

mountPath: /var/log

# ---

Apply the change

kubectl apply -f synergy-leverager.yaml

kubectl get pod

Name Ready Status Restarts Age

deployment-name-xxxx-yyyy 2/2 ready 0 2s

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Note:

Open kubernetes and search sidecar log >

https://kubernetes.io/docs/concepts/cluster-administration/logging/ then search

var log

volumeMounts:

- name: varlog

mountPath: /var/log

volumes:

- name: varlog

emptyDir: {}