creating new folders

configmap/README.md

@@ -0,0 +1,90 @@
+# Configmap
+
+## 01 - Variáveis de ambiente
+
+```
+apiVersion: v1
+kind: Pod
+metadata:
+  name: envar-demo
+  labels:
+    purpose: demonstrate-envars
+spec:
+  containers:
+  - name: envar-demo-container
+    image: gcr.io/google-samples/node-hello:1.0
+    env:
+    - name: DEMO_GREETING
+      value: "Hello from the environment"
+    - name: DEMO_FAREWELL
+      value: "Such a sweet sorrow"
+```
+
+```
+kubectl exec -it envar-demo -- env
+```
+
+## 02 - ConfigMaps
+
+É um objeto de API usado para armazenamento de informações não confidenciais no padrão de chave valor. Pods podem consumir esses objetos como variáveis de ambiente, argumentos de linha de comando ou como arquivos de configuração em um volume.
+
+```
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: game-demo
+data:
+  # property-like keys; each key maps to a simple value
+  player_initial_lives: "3"
+  ui_properties_file_name: "user-interface.properties"
+
+  # file-like keys
+  game.properties: |
+    enemy.types=aliens,monsters
+    player.maximum-lives=5
+  user-interface.properties: |
+    color.good=purple
+    color.bad=yellow
+    allow.textmode=true
+```
+
+```
+apiVersion: v1
+kind: Pod
+metadata:
+  name: configmap-demo-pod
+spec:
+  containers:
+    - name: demo
+      image: alpine
+      command: ["sleep", "3600"]
+      env:
+        # Define the environment variable
+        - name: PLAYER_INITIAL_LIVES # Notice that the case is different here
+                                     # from the key name in the ConfigMap.
+          valueFrom:
+            configMapKeyRef:
+              name: game-demo           # The ConfigMap this value comes from.
+              key: player_initial_lives # The key to fetch.
+        - name: UI_PROPERTIES_FILE_NAME
+          valueFrom:
+            configMapKeyRef:
+              name: game-demo
+              key: ui_properties_file_name
+      volumeMounts:
+      - name: config
+        mountPath: "/config"
+        readOnly: true
+  volumes:
+    # You set volumes at the Pod level, then mount them into containers inside that Pod
+    - name: config
+      configMap:
+        # Provide the name of the ConfigMap you want to mount.
+        name: game-demo
+        # An array of keys from the ConfigMap to create as files
+        items:
+        - key: "game.properties"
+          path: "game.properties"
+        - key: "user-interface.properties"
+          path: "user-interface.properties"
+```

crojob/README.md

@@ -0,0 +1,27 @@
+# Cronjobs
+
+```
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: hello
+spec:
+  schedule: "* * * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: hello
+            image: busybox:1.28
+            imagePullPolicy: IfNotPresent
+            command:
+            - /bin/sh
+            - -c
+            - date; echo Hello from the Kubernetes cluster
+          restartPolicy: OnFailure
+```
+
+```
+watch kubectl get jobs,pods,cj
+```

daemonset/README.md

@@ -0,0 +1,20 @@
+# Daemonsets
+
+```
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: exemplo-ds
+spec:
+  selector:
+    matchLabels:
+      app: exemplo-ds
+  template:
+    metadata:
+      labels:
+        app: exemplo-ds
+    spec:
+      containers:
+      - image: nginx:alpine
+        name: nginx
+```

deployment/README.md

@@ -70,93 +70,3 @@ Escale o deployment para cinco réplicas:
 ```
 kubectl scale deployment/nginx-deployment --replicas=5
 ```
-
-#### 02 - HorizontalPodAutoscaler (HPA)
-
-Para utilização do HPA precisaremos instalar o [metrics-server](https://github.com/kubernetes-sigs/metrics-server) no cluster:
-
-```
-kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
-```
-
-Para concluir a instalação, edite o deployment adicionando um campo `--kubelet-insecure-tls` da lista de `args` do container.
-
-Instale o deployment de exemplo abaixo e inspecione os objetos no cluster:
-
-```
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: hpa-demo-deployment
-spec:
-  selector:
-    matchLabels:
-      run: hpa-demo-deployment
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        run: hpa-demo-deployment
-    spec:
-      containers:
-      - name: hpa-demo-deployment
-        image: k8s.gcr.io/hpa-example
-        ports:
-        - containerPort: 80
-        resources:
-          limits:
-            cpu: 500m
-          requests:
-            cpu: 200m
-```
-
-Crie o service no cluster:
-
-```
-apiVersion: v1
-kind: Service
-metadata:
-  name: hpa-demo-deployment
-  labels:
-    run: hpa-demo-deployment
-spec:
-  ports:
-  - port: 80
-  selector:
-    run: hpa-demo-deployment
-```
-
-Crie o HPA no cluster:
-
-```
-apiVersion: autoscaling/v1
-kind: HorizontalPodAutoscaler
-metadata:
-  name: hpa-demo-deployment
-spec:
-  scaleTargetRef:
-    apiVersion: apps/v1
-    kind: Deployment
-    name: hpa-demo-deployment
-  minReplicas: 1
-  maxReplicas: 10
-  targetCPUUtilizationPercentage: 50
-```
-
-Suba um container usando a image busybox para adicionar carga de CPU no pod:
-
-```
-kubectl run -i --tty load-generator --rm --image=busybox --restart=Never
-```
-
-Dentro do container rode o seguinte comando:
-
-```
-while sleep 0.01; do wget -q -O- http://hpa-demo-deployment; done
-```
-
-Monitore o HPA e o quantitativo de pods enquanto o comando acima é executado:
-
-```
-watch kubectl get pods,hpa
-```

hpa/README.md

@@ -0,0 +1,89 @@
+# HorizontalPodAutoscaler (HPA)
+
+Para utilização do HPA precisaremos instalar o [metrics-server](https://github.com/kubernetes-sigs/metrics-server) no cluster:
+
+```
+kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
+```
+
+Para concluir a instalação, edite o deployment adicionando um campo `--kubelet-insecure-tls` da lista de `args` do container.
+
+Instale o deployment de exemplo abaixo e inspecione os objetos no cluster:
+
+```
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: hpa-demo-deployment
+spec:
+  selector:
+    matchLabels:
+      run: hpa-demo-deployment
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        run: hpa-demo-deployment
+    spec:
+      containers:
+      - name: hpa-demo-deployment
+        image: k8s.gcr.io/hpa-example
+        ports:
+        - containerPort: 80
+        resources:
+          limits:
+            cpu: 500m
+          requests:
+            cpu: 200m
+```
+
+Crie o service no cluster:
+
+```
+apiVersion: v1
+kind: Service
+metadata:
+  name: hpa-demo-deployment
+  labels:
+    run: hpa-demo-deployment
+spec:
+  ports:
+  - port: 80
+  selector:
+    run: hpa-demo-deployment
+```
+
+Crie o HPA no cluster:
+
+```
+apiVersion: autoscaling/v1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: hpa-demo-deployment
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: hpa-demo-deployment
+  minReplicas: 1
+  maxReplicas: 10
+  targetCPUUtilizationPercentage: 50
+```
+
+Suba um container usando a image busybox para adicionar carga de CPU no pod:
+
+```
+kubectl run -i --tty load-generator --rm --image=busybox --restart=Never
+```
+
+Dentro do container rode o seguinte comando:
+
+```
+while sleep 0.01; do wget -q -O- http://hpa-demo-deployment; done
+```
+
+Monitore o HPA e o quantitativo de pods enquanto o comando acima é executado:
+
+```
+watch kubectl get pods,hpa
+```

operators/README.md

@@ -0,0 +1,23 @@
+
+# Operators
+
+```
+curl -sL https://github.com/operator-framework/operator-lifecycle-manager/releases/download/v0.21.2/install.sh | bash -s v0.21.2
+```
+
+```
+kubectl create -f https://operatorhub.io/install/cloud-native-postgresql.yaml
+```
+
+```
+apiVersion: postgresql.k8s.enterprisedb.io/v1
+kind: Cluster
+metadata:
+  name: cluster-sample
+spec:
+  instances: 3
+  logLevel: info
+  primaryUpdateStrategy: unsupervised
+  storage:
+    size: 1Gi
+```