update samples

CKA_Course/advanced_allocation/daemonset.yaml

@@ -0,0 +1,16 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: my-daemonset
+spec:
+  selector:
+    matchLabels:
+      app: my-daemonset
+  template:
+    metadata:
+      labels:
+        app: my-damonset
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.19.1

CKA_Course/advanced_allocation/nodename.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: nginx
+spec:
+  containers:
+  - name: nginx
+    image: nginx
+  nodeName: k8s-worker1

CKA_Course/advanced_allocation/nodeselector.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: nginx
+spec:
+  containers:
+  - name: nginx
+    image: nginx
+  nodeSelector:
+    myLabel: myvalue

CKA_Course/deployment.yaml

@@ -0,0 +1,19 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: my-deployment
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: my-deployment
+  template:
+    metadata:
+      labels:
+        app: my-deployment
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.19.1
+        ports:
+        - containerPort: 80

CKA_Course/networkpolicy.yaml

@@ -0,0 +1,21 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: my-network-policy
+spec:
+  podSelector:
+    matchLabels:
+      role: db
+  ingress:
+    - from:
+      - podSelector:
+        matchLabels:
+          app: db
+  egress:
+    - to:
+      - namespaceSelector:
+        matchLabels:
+          app: web
+      ports:
+        - protocol: TCP
+          port: 80

CKA_Course/pods/configurations/config-map.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: my-configmap
+data:
+  key1: value1
+  key2: value2
+  key3:
+    subkey:
+      morekeys: data
+      evenmore: some more data
+  key4: |
+    You can also do
+    multi-line
+    data.

CKA_Course/pods/configurations/config-vol.yaml

@@ -0,0 +1,5 @@
+...
+volumes:
+- name: secret-vol
+  secret:
+    secretName: my-secret

CKA_Course/pods/configurations/env-vars.yaml

@@ -0,0 +1,9 @@
+spec:
+  containers:
+  - ...
+    env:
+    - name: ENVVAR
+      valueFrom:
+        configMapKeyRef:
+          name: my-configmap
+          key: mykey

CKA_Course/pods/configurations/secret.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: my-secret
+type: Opaque
+data:
+  username: user
+  password: mypass
+

CKA_Course/pods/health/liveness-http.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: liveness-pod-http
+spec:
+  containers:
+  - name: nginx
+    image: nginx:1.19.1
+    livenessProbe:
+      httpGet: 
+        path: /
+        port: 80
+      initialDelaySeconds: 5
+      periodSeconds: 5

CKA_Course/pods/health/liveness.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: liveness-pod
+spec:
+  containers:
+  - name: busybox
+    image: busybox
+    command: ["sh", "-c", "while true; do sleep 3600; done"]
+    livenessProbe:
+      exec:
+        command: ["echo", "Hello, World!"]
+      initialDelaySeconds: 5       # start probing 5s after container start
+      periodSeconds: 5             # probe every 5 seconds

CKA_Course/pods/health/readiness.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: readiness-pod
+spec:
+  containers:
+  - name: nginx
+    image: nginx:1.19.1
+    readinessProbe:
+      httpGet: 
+        path: /
+        port: 80
+      initialDelaySeconds: 5
+      periodSeconds: 5

CKA_Course/pods/health/restart-always.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: always-pod
+spec:
+  restartPolicy: Always
+  containers:
+  - name: busybox
+    image: busybox
+    command: ["sh", "-c", "sleep 10"]

CKA_Course/pods/health/restart-never.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: never-pod
+spec:
+  restartPolicy: Never
+  containers:
+  - name: busybox
+    image: busybox
+    command: ["sh", "-c", "sleep 10"]

CKA_Course/pods/health/restart-onfailure.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: onfailure-pod
+spec:
+  restartPolicy: OnFailure
+  containers:
+  - name: busybox
+    image: busybox
+    command: ["sh", "-c", "sleep 10"]

CKA_Course/pods/health/startup.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: startup-pod
+spec:
+  containers:
+  - name: nginx
+    image: nginx:1.19.1
+    startupProbe:
+      httpGet: 
+        path: /
+        port: 80
+      failureThreshold: 30
+      periodSeconds: 10

CKA_Course/pods/init-container.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: init-pod
+spec:
+  containers:
+  - name: nginx
+    image: nginx:1.19.1
+  initContainers:
+  - name: delay
+    image: busybox
+    command: [ "sleep", "30" ]

CKA_Course/pods/resources/limits.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: my-pod
+spec:
+  containers:
+  - name: busybox
+    image:busybox
+    resources:
+      limits:
+        cpu: "250m"         # 250 milliCPU = 1/4 CPU
+        memory: "128Mi"     # 128 mebibytes

CKA_Course/pods/resources/requests.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: my-pod
+spec:
+  containers:
+  - name: busybox
+    image:busybox
+    resources:
+      requests:
+        cpu: "250m"         # 250 milliCPU = 1/4 CPU
+        memory: "128Mi"     # 128 mebibytes

CKA_Course/pods/sidecar.yaml

@@ -0,0 +1,21 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: sidecar-pod
+spec:
+  containers:
+  - name: busybox1
+    image: busybox
+    command: ['sh', '-c', 'while true; do echo logs data > /output/output.log; sleep 5; done']
+    volumeMounts:
+    - name: sharedVol
+      mountPath: /output
+  - name: sidecar
+    image: busybox
+    command: ['sh', '-c', 'tail -f /intput/output.log']
+    volumeMounts:
+    - name: sharedVol
+      mountPath: /input
+  volumes:
+  - name: sharedVol
+    emptyDir: {}

CKA_Course/services/clusterip.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: svc-clusterip
+spec:
+  type: ClusterIP
+  selector:
+    app: svc-example
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-svc-example
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: svc-example
+  template:
+    metadata:
+      labels:
+        app: svc-example
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.19.1
+        ports:
+        - containerPort: 80

CKA_Course/services/nodeport.yaml

@@ -0,0 +1,33 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: svc-clusterip
+spec:
+  type: NodePort
+  selector:
+    app: svc-example
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80
+      nodePort: 30080
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: deployment-svc-example
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: svc-example
+  template:
+    metadata:
+      labels:
+        app: svc-example
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.19.1
+        ports:
+        - containerPort: 80