[Solved] Which YAML snippet correctly specifies a cloud-native Kafka broker deployment on Kubernetes? — Ans: apiVersion: apps/v1 kind: StatefulSet metadata: name: kafka-broker spec:... | Kafka

Kafka - Kubernetes and Cloud Deployment

Which YAML snippet correctly specifies a cloud-native Kafka broker deployment on Kubernetes?

A

<pre>apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: kafka-broker
spec:
  serviceName: kafka
  replicas: 3
  selector:
    matchLabels:
      app: kafka
  template:
    metadata:
      labels:
        app: kafka
    spec:
      containers:
      - name: kafka
        image: kafka:latest</pre>

B

<pre>apiVersion: v1
kind: Pod
metadata:
  name: kafka-broker
spec:
  containers:
  - name: kafka
    image: kafka:latest</pre>

C

<pre>apiVersion: batch/v1
kind: Job
metadata:
  name: kafka-broker
spec:
  template:
    spec:
      containers:
      - name: kafka
        image: kafka:latest
      restartPolicy: Never</pre>

D

<pre>apiVersion: apps/v1
kind: Deployment
metadata:
  name: kafka-broker
spec:
  replicas: 1
  template:
    spec:
      containers:
      - name: kafka
        image: kafka:latest</pre>

Step-by-Step Solution

Solution:

Step 1: Identify correct Kubernetes resource for Kafka brokers
Kafka brokers require stable network IDs and persistent storage, best handled by StatefulSets.

Step 2: Analyze options

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: kafka-broker
spec:
  serviceName: kafka
  replicas: 3
  selector:
    matchLabels:
      app: kafka
  template:
    metadata:
      labels:
        app: kafka
    spec:
      containers:
      - name: kafka
        image: kafka:latest

uses StatefulSet with proper selectors and labels, suitable for Kafka. Options B and D use Pod and Deployment, which lack stable identities.

apiVersion: batch/v1
kind: Job
metadata:
  name: kafka-broker
spec:
  template:
    spec:
      containers:
      - name: kafka
        image: kafka:latest
      restartPolicy: Never

uses Job, which is for batch tasks, not long-running services.

Final Answer:

apiVersion: apps/v1 kind: StatefulSet metadata: name: kafka-broker spec: serviceName: kafka replicas: 3 selector: matchLabels: app: kafka template: metadata: labels: app: kafka spec: containers: - name: kafka image: kafka:latest
correctly defines a cloud-native Kafka broker deployment.

Quick Check:
Kafka brokers need StatefulSets for stable identities [OK]

Quick Trick: Kafka brokers need StatefulSets, not Jobs or plain Pods [OK]

Common Mistakes:

MISTAKES

Using Job or Pod instead of StatefulSet for Kafka brokers
Omitting selector or labels in StatefulSet spec
Using Deployment which lacks stable network IDs

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Which YAML snippet correctly specifies a cloud-native Kafka broker deployment on Kubernetes?

Step 1: Identify correct Kubernetes resource for Kafka brokers

Step 2: Analyze options

Final Answer:

Quick Check:

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