Final

README.md

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+# My Web Application
+
+## Project Description
+
+This project is a simple web application that provides a user interface to manage a MySQL database. The application consists of a single page that allows the user to perform basic CRUD operations on a list of items stored in the database.
+Containers
+
+## The application consists of the following containers:
+
+    mysql: This container runs the MySQL database server.
+    web: This container runs the web server and serves the web pages to the user.
+
+
+## The following Kubernetes objects are used in the application:
+
+    PersistentVolume: This object is used to create a named volume for the MySQL data.
+    StatefulSet: This object is used to manage the mysql container and ensure that there is only one instance running at any given time.
+    Deployment: This object is used to manage the web container and ensure that there is always at least one instance running.
+    Service: This object is used to provide access to the mysql and web containers from outside the Kubernetes cluster.
+
+## Virtual Networks and Named Volumes
+
+The application uses a virtual network to allow communication between the mysql and web containers. The mysql container stores its data in a named volume called mysql-persistent-storage.
+
+## Container Configuration
+
+The mysql container is configured to use the mysql-persistent-storage volume for data storage. The web container is configured to connect to the mysql container using the Kubernetes service mysql.
+
+## To run the application, perform the following steps:
+
+    1. Install Kubernetes on your machine.
+    2. Install azure-cli: curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
+    3. Clone the project repository.
+    4. Change into the project directory.
+    4. Login in Azure: az login 
+    4. Execute "./prepare-app.sh" make sure it have execution permission.
+    5. Wait for the mysql and web containers to start.
+
+## To view the application on the web, perform the following steps:
+
+    Copy the IP address at the end of the prepare-app.sh file execution.
+    In your web browser, navigate to http://<web-service-ip>.
+
+
+## To clean up the application, perform the following steps:
+
+    Execute "./remove-app.sh" make sure it have execution permission.

deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: phpmyadmin
+  namespace: ibanweb
+spec:
+  selector:
+    matchLabels:
+      app: phpmyadmin
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: phpmyadmin
+    spec:
+      containers:
+        - name: phpmyadmin
+          image: phpmyadmin/phpmyadmin:latest
+          env:
+            - name: PMA_HOST
+              value: mysql
+          ports:
+            - containerPort: 80
+              name: http
+

namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: ibanweb

prepare-app.sh

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+#!/bin/bash
+
+#!/bin/bash
+
+# Set variables
+resourceGroupName="iban-app"
+aksClusterName="ibanapp"
+nodeCount=1
+
+# Create resource group if it does not exist
+if [ $(az group exists --name $resourceGroupName) == "false" ]
+then
+    az group create --name $resourceGroupName --location eastus
+fi
+
+
+az aks create --resource-group $resourceGroupName --name $aksClusterName --node-count $nodeCount --generate-ssh-keys
+
+
+az aks get-credentials --resource-group $resourceGroupName --name $aksClusterName
+kubectl config use-context $aksClusterName
+
+
+# create namespace
+kubectl apply -f namespace.yaml
+
+# create mysql secrets
+kubectl create secret generic mysql-secret --from-literal=password=dromedario -n ibanweb
+
+# create mysql statefulset and service
+kubectl apply -f statefulset.yaml
+kubectl apply -f service.yaml
+
+# create phpmyadmin deployment
+kubectl apply -f deployment.yaml
+
+# expose phpmyadmin deployment
+kubectl expose deployment phpmyadmin --type=LoadBalancer --port=80 --target-port=80 -n ibanweb
+
+# Get the public IP address of the Kubernetes service
+kubectl get service phpmyadmin -n ibanweb -o jsonpath='{.status.loadBalancer.ingress[0].ip}'

remove-app.sh

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+#!/bin/bash
+
+# delete app objects
+kubectl delete -f deployment.yaml
+kubectl delete -f service.yaml
+kubectl delete -f statefulset.yaml
+kubectl delete secret mysql-secret -n ibanweb
+kubectl delete namespace ibanweb
+
+# Eliminar recurso AKS
+az aks delete --name ibanapp --resource-group iban-app --yes
+
+# Eliminar recurso de grupo de recursos
+az group delete --name iban-app --yes

secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: mysql-secret
+  namespace: ibanweb
+type: Opaque
+data:
+  password: YWxtZW5kcmE= #la contraseña es "almendra" en base64

service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: mysql
+  namespace: ibanweb
+spec:
+  ports:
+    - name: mysql
+      port: 3306
+  selector:
+    app: mysql
+

statefulset.yaml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: my-pv
+spec:
+  capacity:
+    storage: 1Gi
+  accessModes:
+    - ReadWriteOnce
+  persistentVolumeReclaimPolicy: Retain
+  storageClassName: slow
+  hostPath:
+    path: /data/my-pv/
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: mysql
+  namespace: ibanweb
+spec:
+  selector:
+    matchLabels:
+      app: mysql
+  serviceName: mysql
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: mysql
+    spec:
+      containers:
+        - name: mysql
+          image: mysql:latest
+          env:
+            - name: MYSQL_ROOT_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: mysql-secret
+                  key: password
+          ports:
+            - containerPort: 3306
+              name: mysql
+          volumeMounts:
+            - name: mysql-persistent-storage
+              mountPath: /var/lib/mysql
+  volumeClaimTemplates:
+    - metadata:
+        name: mysql-persistent-storage
+      spec:
+        accessModes: [ "ReadWriteOnce" ]
+        resources:
+          requests:
+            storage: 1Gi