How to remember the Kubernetes yaml syntax and structures? --help

[damith144]

mcahan k8s wala godak strctures variety ekak thiyenwane. e kiwwe replicaset, deployment services and other patterns. kohomada mewa ekin eka mathaka thiyaganne. ?mama prepare wenna patan gaththa CKA exam ekata. dn thama therenne meka

 

[Arcadian]

Bump

 

[NEMISIS]

For a real job, it does not matter. you can simply use an IDE or ChatGPT or plain old documentation to figure this out.

If you are preparing for an exam,
Write these yaml files using notepad or notepad++ or some other text editor without intele-sense or code suggestion.

 

[damith144]

For a real job, it does not matter. you can simply use an IDE or ChatGPT or plain old documentation to figure this out.

If you are preparing for an exam,
Write these yaml files using notepad or notepad++ or some other text editor without intele-sense or code suggestion.

Yes I need to prepare for the exam CKA and CKS

 

[Nidarshana_k]

Note Book ekak use karala Daily Code karanna Practise wenkn.
Exam ekak nisa okay

 

[miran2012]

During the exam, you have access to the Kubernetes documentation. get the default YAML configuration and modify it as needed for your scenario.

 

[Djice]

kubectl explain will essentially show you the documentation and the fields for a resource. for example, kubectl explain deployment

you can check the documentation for the specific yaml manifest I guess. I've been working with k8s for almost 4 years and can't remember any of the manifests. I just copy paste them for the most part

 

[6h057]

Hope the following helps:

1. Pod​ apiVersion: v1 kind: Pod metadata: name: my-pod labels: app: my-app spec: containers: - name: my-container image: nginx ports: - containerPort: 80 env: - name: ENV_VAR value: "value" volumeMounts: - name: my-volume mountPath: /path/in/container volumes: - name: my-volume emptyDir: {}	2. Deployment​ apiVersion: apps/v1 kind: Deployment metadata: name: my-deployment spec: replicas: 3 selector: matchLabels: app: my-app template: metadata: labels: app: my-app spec: containers: - name: my-container image: nginx ports: - containerPort: 80
3. Service​ apiVersion: v1 kind: Service metadata: name: my-service spec: selector: app: my-app ports: - protocol: TCP port: 80 targetPort: 9376 type: ClusterIP	4. ConfigMap​ apiVersion: v1 kind: ConfigMap metadata: name: my-config data: key1: value1 key2: value2
5. Secret​ apiVersion: v1 kind: Secret metadata: name: my-secret type: Opaque data: username: <base64-encoded> password: <base64-encoded>	6. PersistentVolume (PV)​ apiVersion: v1 kind: PersistentVolume metadata: name: my-pv spec: capacity: storage: 10Gi accessModes: - ReadWriteOnce hostPath: path: /mnt/data
7. PersistentVolumeClaim (PVC)​ apiVersion: v1 kind: PersistentVolumeClaim metadata: name: my-pvc spec: accessModes: - ReadWriteOnce resources: requests: storage: 5Gi	8. Job​ apiVersion: batch/v1 kind: Job metadata: name: my-job spec: template: spec: containers: - name: my-container image: busybox command: ["echo", "Hello, Kubernetes!"] restartPolicy: Never backoffLimit: 4
9. CronJob​ apiVersion: batch/v1 kind: CronJob metadata: name: my-cronjob spec: schedule: "*/1 * * * *" jobTemplate: spec: template: spec: containers: - name: my-container image: busybox command: ["echo", "Hello, Kubernetes!"] restartPolicy: OnFailure	10. Namespace​ apiVersion: v1 kind: Namespace metadata: name: my-namespace
11. Ingress​ apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: my-ingress spec: rules: - host: my-app.com http: paths: - path: / pathType: Prefix backend: service: name: my-service port: number: 80	12. Role​ apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: my-role namespace: my-namespace rules: - apiGroups: [""] resources: ["pods"] verbs: ["get", "list", "create"]
13. RoleBinding​ apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: name: my-rolebinding namespace: my-namespace subjects: - kind: User name: my-user apiGroup: rbac.authorization.k8s.io roleRef: kind: Role name: my-role apiGroup: rbac.authorization.k8s.io	14. ServiceAccount​ apiVersion: v1 kind: ServiceAccount metadata: name: my-serviceaccount
15. Resource Quota​ apiVersion: v1 kind: ResourceQuota metadata: name: my-resourcequota spec: hard: requests.cpu: "1" requests.memory: 1Gi limits.cpu: "2" limits.memory: 2Gi	16. HorizontalPodAutoscaler (HPA)​ apiVersion: autoscaling/v2 kind: HorizontalPodAutoscaler metadata: name: my-hpa spec: scaleTargetRef: apiVersion: apps/v1 kind: Deployment name: my-deployment minReplicas: 1 maxReplicas: 10 metrics: - type: Resource resource: name: cpu target: type: Utilization averageUtilization: 50
17. NetworkPolicy​ apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: my-networkpolicy spec: podSelector: matchLabels: app: my-app policyTypes: - Ingress - Egress ingress: - from: - podSelector: matchLabels: role: frontend egress: - to: - ipBlock: cidr: 10.0.0.0/24

Key Fields to Remember​

• apiVersion: The API version (e.g., v1, apps/v1, batch/v1).
• kind: The type of resource (e.g., Pod, Deployment, Service).
• metadata: Includes name, labels, and namespace.
• spec: Defines the desired state of the resource.
• selector: Used to match resources (e.g., in Deployments and Services).
• template: Defines the Pod template in Deployments and Jobs.
• containers: List of containers in a Pod.
• ports: Exposes container ports.
• env: Environment variables for containers.
• volumes: Storage volumes for Pods.

1. ඉහත සඳහන් දේ මුද්‍රණය කරන්න හෝ practice කරන අතරතුර විවෘතව තබා ගන්න.
2. ඔබේ YAML files cross-check කිරීමට එය භාවිතා කරන්න.
3. ඔබ ඉගෙන ගන්නා පරිදි ඔබේම සටහන් හෝ උදාහරණ එක් කරන්න.