Migrate from Docker Compose

This part explains how to migrate applications from Docker Compose to the Clawcloud Run platform.

Clawcloud Run offers features such as instant deployment, deep CI/CD integration, private networks, observability, and elastic scaling, allowing developers to focus on implementing business logic without worrying about the underlying infrastructure. Thanks to the user-friendly experience provided by the Clawcloud Run platform, developers can more easily migrate, deploy, and manage applications.

This part uses Wordpess with a MySQL database as an example to demonstrate how to migrate applications from Docker Compose to the Clawcloud Run platform.

Worpress

Background Information

What is Docker Compose?

Docker Compose is a tool for defining and running multi-container applications. It is the key to unlocking a streamlined and efficient development and deployment experience.

Compose simplifies the control of your entire application stack, making it easy to manage services, networks, and volumes in a single, comprehensible YAML configuration file. Then, with a single command, you create and start all the services from your configuration file.

The Docker Compose configuration file is as follows:

docker-compose.yml

services:

  wordpress:
    image: wordpress
    restart: always
    ports:
      - 8080:80
    environment:
      WORDPRESS_DB_HOST: db
      WORDPRESS_DB_USER: exampleuser
      WORDPRESS_DB_PASSWORD: examplepass
      WORDPRESS_DB_NAME: exampledb
    volumes:
      - wordpress:/var/www/html

  db:
    image: mysql:8.0
    restart: always
    environment:
      MYSQL_DATABASE: exampledb
      MYSQL_USER: exampleuser
      MYSQL_PASSWORD: examplepass
      MYSQL_RANDOM_ROOT_PASSWORD: '1'
    volumes:
      - db:/var/lib/mysql

volumes:
  wordpress:
  db:

primarily involving the following parameters:

• ports: publish a container's port(s) to the host;

• environment: set environment variables;

• volumes: bind mount a volume.

Next, we will demonstrate how to deploy an identical application on the Clawcloud Run platform using the same image, database and configuration parameters.

Deployment Steps

Log in to the Clawcloud Run console, navigate to the App Launchpad application, and click on "Create APP".

Clawcloud Run Console

App Launchpad

On the Application Deployment page, fill in the application parameters as specified in the table below:

Application Parameter	Parameter Value	Description
Application Name	Wordpress with MySQL	Custom Application Name
Image Type	Public	Public or Private
Image Name	wordpress:latest	Format <User-name>/<Image-name>:tag
Usage Type	Fixed	Fixed or Scaling
Replicas	1	Set according to actual needs
CPU	2 Core	Set according to actual needs
Memory	4 G	Set according to actual needs

Next, configure the application parameters corresponding to the -p, -e, and -v options in the docker run command.

Docker Parameters	Application Parameter	Parameter Value
8080:80	Network - Container Port	80
WORDPRESS_DB_HOST: db WORDPRESS_DB_USER: exampleuser WORDPRESS_DB_PASSWORD: examplepass WORDPRESS_DB_NAME: exampledb	Advanced Configuration - Environment Variables	WORDPRESS_DB_HOST: db WORDPRESS_DB_USER: exampleuser WORDPRESS_DB_PASSWORD: examplepass WORDPRESS_DB_NAME: exampledb
wordpress:/var/www/html	Advanced Configuration - Local Storage	/var/www/html

Finally, click "Deploy Application" to deploy the application.

Deploy Application

Next, create the MySQL database, navigate to the Database application, and click on "Create Database".

Clawcloud Run Database

Create Database

On the Database Deploy page, fill in the database parameters as specified in the table below:

Database Parameter	Parameter Value	Description
Type	MySQL	MySQL or PostgreSQL or Redis etc.
Version	mysql-8.0.30	Database version
Name	db	Custom Database Name
CPU	2 Core	Set according to actual needs
Memory	4 G	Set according to actual needs
Replicas	3	Set according to actual needs
Storage	100 G	Set according to actual needs
Backup	Off	Set according to actual needs

Finally, click "Deploy" to deploy the database.

Deploy Database

Record the database connection details displayed in the console, such as Username, Password, Host, etc.

Database Connection Details

Go back to the App Launchpad, edit the Environment Variables for WordPress, input the database connection information, and restart the WordPress application.

Edit Environment Variables

You can now access Wordpress via the Public Address provided by the Clawcloud Run platform.

Wordpress Initialization interface

You can also use a custom domain to access the application. To set up a custom domain, please add a CNAME record for your domain pointing to the public address at your domain registrar. You can bind your custom domain once the DNS resolution takes effect.

Custom Domain