init

hello-world/Dockerfile

+# syntax=docker/dockerfile:1
+FROM ubuntu:22.04
+
+# install app dependencies
+RUN apt-get update && apt-get install -y python3 python3-pip
+RUN pip install flask==2.1.*
+
+# install app
+COPY hello.py /
+
+# final configuration
+ENV FLASK_APP=hello
+EXPOSE 8000
+CMD flask run --host 0.0.0.0 --port 8000
\ No newline at end of file

hello-world/hello.py

+from flask import Flask
+app = Flask(__name__)
+
+@app.route("/")
+def hello():
+    return "Hello World!"
\ No newline at end of file

hello-world/readme.md

+Einfaches Hello World Programm für Docker

portainer_docker_compose/README.md

+# portainer_docker_compose
+`git clone https://gitlab.com/thomas-staub/cloudmodules/m169/demobeispiele/portainer_docker_compose.git`
+
+`cd portainer_docker_compose`
+
+`docker-compose -f docker-compose.yaml up -d`
+
+

portainer_docker_compose/docker-compose.yaml

+version: '3'
+
+services:
+  portainer:
+    image: portainer/portainer-ce:latest
+    container_name: portainer
+    restart: unless-stopped
+    security_opt:
+      - no-new-privileges:true
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - ./portainer-data:/data
+    ports:
+      - 9000:9000

to-do-app-k8s/README.md

+# to-do-app-k8s
+Installieren Sie microk8s auf Ihrem Rechner
+
+`microk8s enable dashboard ingress metallb`
+
+Die Anwendung kann mit folgendem Befehl installiert werden. 
+
+`microk8s kubectl create -f https://gitlab.com/thomas-staub/cloudmodules/m169/demobeispiele/to-do-app-k8s/-/raw/main/my-app.yaml`

to-do-app-k8s/ingress.yaml

+apiVersion: v1
+kind: Service
+metadata:
+  namespace: my-app
+  name: todo-app-service
+  labels:
+    name: todo-app
+spec:
+  selector:
+    app: todo-app
+  ports:
+    - name: http
+      protocol: TCP
+      port: 80
+      targetPort: 3000
+    - port: 443
+      protocol: TCP
+      name: https
+      targetPort: 3000
+
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  namespace: my-app
+  name: http-ingress
+spec:
+  rules:
+  - host: my-app.com
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: todo-app-service
+            port:
+              number: 80
+            port:
+              number: 443
+#in der Hostdatei braucht es noch einen Eintrag 172.23.6.165 (IP der VM)    my-app.com  
+

to-do-app-k8s/my-app.yaml

+apiVersion: v1
+kind: Namespace
+metadata:
+  name: my-app   ## name of the namespace
+---
+kind: ReplicationController
+apiVersion: v1
+metadata:
+  name: redis-master
+  namespace: my-app
+  labels:
+    name: redis-master
+spec:
+  replicas: 1
+  selector:
+    name: redis-master
+  template:
+    metadata:
+      labels:
+        name: redis-master
+    spec:
+      containers:
+      - name: redis-master
+        image: staubth/redis-master:v1
+        ports:
+        - containerPort: 6379
+          protocol: TCP
+
+---
+
+kind: Service
+apiVersion: v1
+metadata:
+  namespace: my-app
+  name: redis-master
+  labels:
+    name: redis-master
+spec:
+  ports:
+  - port: 6379
+    targetPort: 6379
+    protocol: TCP
+  selector:
+    name: redis-master
+
+---
+kind: ReplicationController
+apiVersion: v1
+metadata:
+  namespace: my-app
+  name: redis-slave
+  labels:
+    name: redis-slave
+spec:
+  replicas: 2
+  selector:
+    name: redis-slave
+  template:
+    metadata:
+      labels:
+        name: redis-slave
+    spec:
+      containers:
+      - name: slave
+        image: staubth/redis-slave:v1
+        ports:
+        - containerPort: 6379
+          protocol: TCP
+
+---
+kind: Service
+apiVersion: v1
+metadata:
+  namespace: my-app
+  name: redis-slave
+  labels:
+    name: redis-slave
+spec:
+  ports:
+  - port: 6379
+    targetPort: 6379
+    protocol: TCP
+  selector:
+    name: redis-slave
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  namespace: my-app
+  name: todo-app-deployment
+  labels:
+    name: todo-app
+    app: todo-app
+spec:
+  replicas: 3
+  selector:
+   matchLabels:
+      app: todo-app
+  template:
+    metadata:
+      labels:
+        app: todo-app
+    spec:
+      containers:
+      - name: todo-app
+        image: staubth/todo-app:v1
+        ports:
+        - containerPort: 3000
+          protocol: TCP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  namespace: my-app
+  name: todo-app-service
+  labels:
+    name: todo-app
+spec:
+  selector:
+    app: todo-app
+  type: LoadBalancer
+  # loadBalancerIP is optional. MetalLB will automatically allocate an IP
+  # from its pool if not specified. You can also specify one manually.
+  # loadBalancerIP: x.y.z.a
+  ports:
+    - name: http
+      protocol: TCP
+      port: 80
+      targetPort: 3000
+    - name: https
+      protocol: TCP
+      port: 443
+      targetPort: 3000

to-do-app-k8s/namespace.yaml

+apiVersion: v1
+kind: Namespace
+metadata:
+  name: to-do-app

to-do-app-k8s/redis-master-controller.yaml

+kind: ReplicationController
+apiVersion: v1
+metadata:
+  name: redis-master
+  labels:
+    name: redis-master
+spec:
+  replicas: 1
+  selector:
+    name: redis-master
+  template:
+    metadata:
+      labels:
+        name: redis-master
+    spec:
+      containers:
+      - name: redis-master
+        image: staubth/redis-master:v1
+        ports:
+        - containerPort: 6379
+          protocol: TCP
+

to-do-app-k8s/redis-master-service.yaml

+kind: Service
+apiVersion: v1
+metadata:
+  name: redis-master
+  labels:
+    name: redis-master
+spec:
+  ports:
+  - port: 6379
+    targetPort: 6379
+    protocol: TCP
+  selector:
+    name: redis-master
+

to-do-app-k8s/redis-slave-controller.yaml

+kind: ReplicationController
+apiVersion: v1
+metadata:
+  name: redis-slave
+  labels:
+    name: redis-slave
+spec:
+  replicas: 2
+  selector:
+    name: redis-slave
+  template:
+    metadata:
+      labels:
+        name: redis-slave
+    spec:
+      containers:
+      - name: slave
+        image: staubth/redis-slave:v1
+        ports:
+        - containerPort: 6379
+          protocol: TCP
+

to-do-app-k8s/redis-slave-service.yaml

+kind: Service
+apiVersion: v1
+metadata:
+  name: redis-slave
+  labels:
+    name: redis-slave
+spec:
+  ports:
+  - port: 6379
+    targetPort: 6379
+    protocol: TCP
+  selector:
+    name: redis-slave
+

to-do-app-k8s/todo-app-deploy-v2.yaml

+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: todo-app-deployment
+  labels:
+    app: todo-app
+spec:
+  replicas: 5
+  selector:
+   matchLabels:
+      app: todo-app
+
+  minReadySeconds: 20
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 0
+  template:
+    metadata:
+      labels:
+        app: todo-app
+    spec:
+      containers:
+      - name: todo-app
+        image: staubth/todo-app:v2
+        ports:
+        - containerPort: 3000
+          protocol: TCP
+
+
+

to-do-app-k8s/todo-app-deploy.yaml

+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: todo-app-deployment
+  labels:
+    name: todo-app
+    app: todo-app
+spec:
+  replicas: 3
+  selector:
+   matchLabels:
+      app: todo-app
+  template:
+    metadata:
+      labels:
+        app: todo-app
+    spec:
+      containers:
+      - name: todo-app
+        image: staubth/todo-app:v1
+        ports:
+        - containerPort: 3000
+          protocol: TCP
+
+
+

to-do-app-k8s/todo-app-service-deploy.yaml

+apiVersion: v1
+kind: Service
+metadata:
+  name: todo-app-service
+  labels:
+    name: todo-app
+spec:
+  selector:
+    app: todo-app
+  type: LoadBalancer
+  # loadBalancerIP is optional. MetalLB will automatically allocate an IP
+  # from its pool if not specified. You can also specify one manually.
+  # loadBalancerIP: x.y.z.a
+  ports:
+    - name: http
+      protocol: TCP
+      port: 80
+      targetPort: 3000
+    - name: https
+      protocol: TCP
+      port: 443
+      targetPort: 3000
+

to-do-appv1/README.md

+Demo Programm für Docker 
+kann mit `git clone git@gitlab.com:thomas-staub/cloudmodules/m169/demobeispiele/to-do-appv1.git` in Play with Doker geclont werden
+
+Run `docker-compose -f https://gitlab.com/thomas-staub/cloudmodules/m169/demobeispiele/to-do-appv1/-/raw/main/docker-compose-git.yaml up -d` 
+

to-do-appv1/docker-compose-docker-hub.yml

+version: "3"
+services:
+  todoapp:
+    image: staubth/todo-app:v1    
+    ports:
+     - "3000"
+    depends_on:
+     - redis-master
+     - redis-slave
+  redis-slave:
+    image: staubth/redis-slave:v1
+    depends_on:
+     - redis-master
+  redis-master:
+    image: staubth/redis-master:v1
+

to-do-appv1/docker-compose-git.yaml

+version: "3"
+services:
+  todoapp:
+    image: registry.gitlab.com/thomas-staub/cloudmodules/m169/demobeispiele/to-do-appv1/todo-app:v1    
+    ports:
+     - "3000"
+    depends_on:
+     - redis-master
+     - redis-slave
+  redis-slave:
+    image: registry.gitlab.com/thomas-staub/cloudmodules/m169/demobeispiele/to-do-appv1/redis-slave:v1
+    depends_on:
+     - redis-master
+  redis-master:
+    image: registry.gitlab.com/thomas-staub/cloudmodules/m169/demobeispiele/to-do-appv1/redis-master:v1
+

to-do-appv1/docker-compose.yml

+version: "3"
+services:
+  todoapp:
+    build: ./web-frontend
+    ports:
+     - "3000"
+    depends_on:
+     - redis-master
+     - redis-slave
+  redis-slave:
+    build: ./redis-slave
+    depends_on:
+     - redis-master
+  redis-master:
+    build: ./redis-master
+