Replicaset

Dockerfile

@@ -0,0 +1,28 @@
+# Stage 1: Build PHP application
+FROM php:7.4-apache
+
+# Set environment variables
+ENV PHP_UPLOAD_MAX_FILESIZE 10M
+ENV PHP_POST_MAX_SIZE 10M
+
+# Install MySQL client
+RUN apt-get update && apt-get install -y default-mysql-client
+
+# Install mysqli and pdo_mysql extensions
+RUN docker-php-ext-install mysqli pdo_mysql
+
+# Copy your source code to /var/www/html
+COPY . /var/www/html
+
+# Configure Apache
+COPY apache-config.conf /etc/apache2/sites-available/000-default.conf
+RUN a2enmod rewrite
+ENV APACHE_DOCUMENT_ROOT /var/www/html/public
+RUN sed -ri -e 's!/var/www/html!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/sites-available/*.conf
+RUN sed -ri -e 's!/var/www/!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf
+
+# Expose port 80
+EXPOSE 80
+
+# Start Apache
+CMD ["apache2-foreground"]

README.md

@@ -123,3 +123,13 @@ sudo sed -i 's/172.20.1.101/localhost/g' /var/www/html/index.php
 ```
 curl http://localhost
 ```
+
+### Delete a Replicaset
+
+```sh
+kubectl describe -f rs/go-demo-2.yml
+
+kubectl delete replicaset <name of replicaset> --cascade=orphan
+
+```
+

configmap

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: mysql-initdb-config
+data:
+  initdb.sql: |
+    CREATE TABLE friends (
+      id INT,
+      name VARCHAR(256),
+      age INT,
+      gender VARCHAR(3)
+    );
+    INSERT INTO friends VALUES (1, 'John Smith', 32, 'm');
+    INSERT INTO friends VALUES (2, 'Lilian Worksmith', 29, 'f');
+    INSERT INTO friends VALUES (3, 'Michael Rupert', 27, 'm');

dockerfile.ms1

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+# Stage 1: Build Stage
+FROM php:7.4-apache AS build
+
+# Install mysqli extension
+RUN docker-php-ext-install mysqli
+
+# Stage 2: Production Stage
+FROM php:7.4-apache
+
+# Copy the built mysqli extension from the build stage
+COPY --from=build /usr/local/lib/php/extensions/no-debug-non-zts-20190902/mysqli.so /usr/local/lib/php/extensions/no-debug-non-zts-20190902/mysqli.so
+
+# Enable the mysqli extension
+RUN echo "extension=mysqli.so" > /usr/local/etc/php/conf.d/docker-php-ext-mysqli.ini
+
+# Copy source code to /var/www/html
+COPY src/ /var/www/html/
+
+# Update database connection string to point to the Kubernetes service named mysql-service
+# Assuming the connection is in a PHP file, you may need to replace the appropriate string
+# Example: If your connection string is in config.php
+# RUN sed -i 's/old_connection_string/new_connection_string/g' /var/www/html/config.php
+
+# Expose port 80
+EXPOSE 80

dockerfile.ms2

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+# Stage 1: Build environment for installing dependencies
+FROM php:7.4-apache AS builder
+
+RUN apt-get update && apt-get install -y mysqli && apt-get clean
+
+# Stage 2: Copy application code and configure database connection
+FROM php:7.4-apache
+
+# Copy source code to Apache document root
+COPY . /var/www/html
+
+# Update database connection string (replace 'config.php' with your actual file)
+RUN sed -i 's/DATABASE_HOST.*/DATABASE_HOST=mysql-service/g' /var/www/html/config.php
+
+# Expose port 80 for web traffic
+EXPOSE 80

mysql-initdb-config

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: mysql
+spec:
+  containers:
+    - name: mysql
+      image: mysql
+      ports:
+        - containerPort: 3306
+      volumeMounts:
+        - name: mysql-initdb
+          mountPath: /docker-entrypoint-initdb.d
+  volumes:
+    - name: mysql-initdb
+      configMap:
+        name: mysql-initdb-config