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deployment.md

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Deployment

This section contains the deployment instructions for the microservices.

The microservice should be working in the deployment if the src folder contains the project, and the app.py file isn't modified too much.

You can change those files to fit your project, but take in account the Docker files might need to be modified.

Docker

The microservices are deployed using Docker. The Dockerfile is used to build the image (reference) and then deploy it.

Docker-Compose

This file is used to deploy the microservices. It uses the Dockerfile to build the image and then deploys it along with a PostgreSQL database.

This should be used along the environment variables file .env which contains the environment variables for the microservices.

Deploying the Microservices

  1. Change directory into docker folder.
  2. Build the images. e.g. docker-compose up --build --remove-orphans
  3. Deploy! e.g. docker-compose up -d.

Take in account an .dockerignore file could exist to avoid copying unnecessary files to the image.

Save Images and Upload to a server

If you want to deploy the microservices on a server without uploading the project, you will need to save the images and upload them to the server.

  1. Build the images that will be deployed with docker-compose --build
  2. docker save the image that is generated. e.g. docker save myprojectname:latest | gzip > myprojectname.tar.gz

    1. This command only works in Linux or in WSL.

  3. Upload the tar.gz files to the server and the docker-compose.yml.
  4. docker load the images. e.g. docker load -i myprojectname.tar.gz
  5. Run Docker-Compose to deploy. e.g. docker-compose up -d

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