expose. Create a file called docker-compose.yml in your project directory. If this happens, either close the other application or temporarily change the port in docker-compose-deploy.yml. Because In 5. This copies the .env.sample file to a new file called .env. Support ATA Learning with ATA Guidebook PDF eBooks available offline and with no ads! Click to enable/disable Google reCaptcha. 3. The last two lines which end with _ROOT set the location on the file system where these files will be stored. An open platform for distributed applications for developers and sysadmins. The docker-compose.yml file describes the services that make your app. Then check the box acknowledging you have access to it, and click Launch Instance. Leave the passphrase blank, or enter one if you prefer (just make sure you remember it, because youll need it to do deployments). The below code creates a viewset to return the data from the API to the frontend and handle GET requests from users. Save and close the requirements.txt file. If you have localhost access to your host (i.e., you do not use a remote solution to deploy Docker), point your browser to http://0.0.0.0:8000, http://127.0.0.1:8000, or http://localhost:8000. This defines some named volumes that will be managed by Docker Compose. Add the following content to the Dockerfile. Read more Creating a Django API and Connecting to PostgreSQL, Creating a Dockerfile to Build the Django API, Building Docker Compose File to Run Django and PostgreSQL, Configuring PostgreSQL to Work with Docker and Django, How to Install and Use Docker on Ubuntu (In the Real World), How to Install Ubuntu 20.04 [Step-by-Step], How to Deploy and Manage a Docker MongoDB Container. By continuing to browse the site, you are agreeing to our use of cookies. We need a Dockerfile, Python dependencies, and a Docker Compose file. Note that blocking some types of cookies may impact your experience on our websites and the services we are able to offer. password authentication failed for user devuser However, environment variables can only have one type (string). 6. Its not super scalable because everything runs on a single server. Next well update settings.py to pull configuration values from environment variables that we can set in our docker-compose.yml file, and also customise for deployment. postgres Docker image Docker Desktop installed on your machine. Finally, open the file in path ~/django_recipe_api/recipe_api/urls.py and replace the code in the file with the code below. also describes which Docker images these services use, how they link Hate ads? django-admin.py startproject command in the container. Related:How to Deploy and Manage a Docker MongoDB Container. Select the instance of the sample model we just added: Click on the link to the file you uploaded: When you click it, you should see the image (or file) you uploaded displayed in the browser. Inside the AWS console, select Services and then EC2: On the left menu, locate the Network & Security section, and choose Key Pairs: On the Key pairs page, choose Actions and Import key pair: On the Import key pair screen, give your key a name (usually your name with the device the key is stored on) and paste the contents of your public key into the large box provided. However, if youre not sure please comment below and Ill make a specific tutorial on it. In this tutorial, youll learn to become your own master in building a Docker image and container for your Django application. Otherwise you will be prompted again when opening a new browser window or new a tab. Note: The resources well be using in this tutorial should fall inside the free tier. Create another file called ~/django_recipe_api/recipe/serializers.py and populate the file with the code below. By Runnable: The service that speeds up development by providing full-stack environments for every code branch. This file is used by the RUN pip install -r requirements.txt command in your Dockerfile. Rerun the command below to build the image again. One of the simplest is by running the app using Docker Compose directly on a Linux virtual machine. When logged in, you should see something like this: Now its time to install our dependencies. Get many of our tutorials packaged as an ATA Guidebook. However, I take no responsibility for any charges incurred on your account. The ALLOWED_HOSTS settings is a security feature of Django which needs to contain a list of domain names that are allowed to access the app when debug mode is disabled. this example those services are a web server and database. (Good development habits mean we separate our concerns and allow one container to run the database and the other to run our web application.) If youd like to follow along, be sure you have the following: Related:How to Install and Use Docker on Ubuntu (In the Real World), Related:How to Install Ubuntu 20.04 [Step-by-Step]. Due to security reasons we are not able to show or modify cookies from other domains. Sets the build context to the current directory. On a Mac, you need to use docker-machine ip MACHINE_VM to get your Docker hosts IP address (then use that address like http://MACHINE_IP:8000 to access your web page). Open the ~/django_recipe_api/recipe/models.py file and paste the code below. Next, open the requirements.txt file and add the psycopg2==2.8.6 requirement. verify this. the web image doesnt exist yet, Compose builds it from the current Your email address will not be published. However, in most cases you will want to keep your code private, so well use a deploy key to access it. Published:31 January 2022 - 7 min. Changes will take effect once you reload the page. Click to enable/disable _ga - Google Analytics Cookie. While connected to your server, run the following command: When prompted for the file to save the key, leave the input blank and hit enter (this will place it in the default location). If youre using Git, add the following to your .gitignore to ensure any static or media files are not committed to your project: The next step is to tell Django to use this new volume for our static and media files. This is useful if you need to retrieve header information from your Django requests. In the root of the project create a .gitignore file, and include the contents provided by the GitHub template gitignore/Python.gitignore. Now run the following command to test our deployment locally: The above commands do the following (in order): Note: If you have any other application running on port 80, the server may fail to start. You always can block or delete cookies by changing your browser settings and force blocking all cookies on this website. All configuration values can be set on the server we deploy to by adding a file called .env. However, the web image does not exist yet, so Compose builds it from the current directory (look at build in the configuration file). On the Step 4: Add Storage page you can choose how much disk space will be available to your VM and click Review and Launch. We use cookies to let us know when you visit our websites, how you interact with us, to enrich your user experience, and to customize your relationship with our website. Copyright 2016 Docker Inc. All rights reserved. Important: AWS will charge you according to the type of image you select. Compose builds the web service from the Dockerfile in the local host directory, mounts it to /code in the container (so you can alter your code without rebuilding the image every time), and links the web service to the db service. List the files just When we deploy Django, we run it using a WSGI service. Open the docker-compose.yml file and replace the files content with the code below. 8. Next, open your settings.py file and add 0.0.0.0 as a value of the ALLOWED_HOSTS since Docker runs on the host (0.0.0.0). Its needed because there are a number of files that we dont need to add to our Docker image. The media files will be stored in /vol/web/media, and the static files will be stored in /vol/web/static. Thats how you deploy Django using Docker Compose. Next well create an app and add a model to test with by running the following: Now open app/app/settings.py and add update INSTALLED_APPS to the following: Open up app/core/models.py add the following: This will create a model which contains an attachment which we can use to test handling media files. 5. We provide the default of 0, so debug mode is always disabled by default, unless we override it by setting DEBUG=1. In the code below, you are setting up the URLs so that Django REST Framework can connect to your application properly. ATA Learning is always seeking instructors of all experience levels. For example, for DEBUG we need a boolean, so we first pull in the DEBUG value (which should be set to 1 or 0), convert it to a integer using the int() function, then convert that to a boolean using the bool() function. 6. by root. There are a number of ways you can deploy a Django app. For more information on Dockerfiles, see the Docker user The Dockerfile defines an applications image content via one or more build In four steps, well have a fully dockerized Django application configured and set up using Docker Compose. However, these items are out of the scope of this tutorial. https://i0.wp.com/londonappdeveloper.com/wp-content/uploads/2021/05/Artboard-4.png?fit=606%2C474&ssl=1, https://londonappdeveloper.com/wp-content/uploads/2018/12/lon_website_logo-300x110.png. Add a new file in the root of the project (not the proxy/ subdirectory) called docker-compose-deploy.yml, with the following contents: This is quite a big one, so Ill break the explanation down by each block, working from the bottom up because it allows for a more logical explanation. Youll build a recipe API and connect it to PostgreSQL, which comes with Django by default. Create the Django project using the docker-compose command. Amongst other output, you should see a warning when executing the Compose run command: Avoid this error by building the image first with docker build -t web .. Make sure you move all of your Django files into your main directory, or Docker cannot find manage.py. On Step 3: Configure Instance Details leave everything default and click Next: Add Storage. This quick-start guide demonstrates how to use Docker Compose to set up and run a simple Django/PostgreSQL app. db loads the postgres image from Docker Hub. Although WSGI can serve images and binary files, its not very efficient at it. If you need a more reliable and scalable option, you may want to take a look at our course: DevOps Deployment Automation with Terraform, AWS and Docker. Update the RUN block in your Dockerfile to read the following: The above modification will do the following: Now add the following to the requirements.txt file to install the driver: Run docker-compose build to build our image with the latest changes. ownership of the the new files. We provide you with a list of stored cookies on your computer in our domain so you can check what we stored. Click to enable/disable essential site cookies. Add a new file called docker-compose.yml with the following contents: Create a file called .dockerignore, and add the following contents: This is a configuration file that excludes certain files and directories from the Docker build context. Now we can do what weve all been waiting for: deploy our project to a server. Open the Dockerfile and add && \ to the end of the RUN block, then add this: Next, open docker-compose.yml, locate the app service and update the volumes block to the following: This will map a volume from app/data/ in our project to /vol/web on the container, so we can test it is working correctly before we setup our deployment. We use environment variables to set the database name (devdb), the root user (devuser) and the password (changeme). Now use your favourite editor (eg: nano or vi) to open your .env file, and update the entries to real values: Note: Its important you set ALLOWED_HOSTS to the domain name youll be using to access your Django app. As you see below, your API is perfectly running, which lets you add recipes. Then, if in DEBUG mode, we call the static function while passing in the MEDIA_URL and MEDIA_ROOT configurations, and append the output to the urlpatterns list. line in docker-compose.yml. Adding a deploy key to our project in GitHub. Now you can go on and add more data if you like. Django project. When I do this I get an authontication error. This creates a database service similar to the one we use for our development server, except: The app block defines our Django application. We can test the handling of our media files by uploading a file using the Django admin. It ensure the data can be persisted even after we remove the running containers, and makes reading/writing data efficient. Now open the ~/django_recipe_api/recipe_api/settings.py file in your preferred text editor, and add the following code. You also state the route to use when accessing the API on a browser. This configures the project to pull certain configuration values from environment variables. This happens because the container runs as the root user. Ill show you how to customise them on your deployment later. Then create a new file called requirements.txt and add the following contents: We use this to install Django with the latest patch version which is 3.2.3 (or greater) but less than 3.3 which helps ensure security patches are installed while preventing Django being upgraded to a minor release which may contain breaking changes. In your project directory, edit the composeexample/settings.py file. The t2.micro option should be included in the free tier, so I suggest using this one for following this guide. Create a new file called .env.sample in the root of the project and add the following contents: This file should be included in your Git project and should only contain dummy values that need to be changed. in a container, using the web services image and configuration. It needs to be a list and, as we mention above, environment variable values always arrive as string, so we need to accept it as a comma separate list which we split up and append to the ALLOWED_HOSTS setting. Now lets test our project using the dev server. You need to move all of your files out of compose_django_example as well: Edit compose_django/compose_django_example/compose_django_example/settings.py and replace the DATABASES section with the following: Set the user and password for Postgres in your shell: Run docker-compose up -e POSTGRES_PASSWORD=pleaseUseAStrongPassw0rd and Docker Compose launches your Django app. Then, add the following to the bottom of the app service in docker-compose.yml. You can also change some of your preferences. Please be aware that this might heavily reduce the functionality and appearance of our site. On Step 7: Review Instance Launch select Edit security groups. One common challenge people face when working with Django is with handling static and media files. On the EC2 page, choose Launch instance (about halfway down the page): From the Choose an Amazon Machine Image (AMI) page, locate Amazon Linux 2 AMI and choose Select: Note: As the label suggests, this is available in the free tier. See the docker-compose.yml reference for more Now register the new model in app/core/admin.py: Now run the following command to generate the migrations for adding the new model: There is a problem when using Django with a database running in Docker. DevOps Deployment Automation with Terraform, AWS and Docker, standard Python .gitignore file provided by GitHub. Well start by adding a new service to docker-compose.yml called db, which looks like this: This will define a new service based on the postgres:13-alpine image from Docker Hub. If you have any questions or if you think there is a better approach to any of the steps, leave them in the comments below so we can all learn from each other. Now we need to configure Docker to install uWSGI. docker-machine ip MACHINE_NAME to get the IP address. We can do this by updating docker-compose.yml by including the following command under the app service: The server should start and if you head over to http://127.0.0.1:8000 you should see the Django placeholder landing page. First we need need create a superuser, by running the following command: Then run the following command to start the server: Navigate to http://127.0.0.1:8000/admin and login: Once logged in, choose Add next to Samples to create a new model instance: Then click Browse next to attachment and choose a file (any file will do, an image is best). On the Step 6: Configure Security Group page select Add Rule, choose HTTP from the dropdown and click on Review and Launch. To install uWSGI, we need to modify the RUN block in our Dockerfile to include the linux-headers as a temporary build dependency. You can use multiple by separating them by commas like ALLOWED_HOSTS=one.example.com,two.example.com,three.example.com. and the Dockerfile reference. Youre working with SQLite as a database at the moment, which is not ideal when you want to scale your application. Build, Ship, Run. This instructs Compose to run django-admin.py startproject composeeexample Run the following commands to create a new Django project (recipe_api) and an app (recipe) in the current directory where the API will live. The directory should only contain resources to build that image. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses cookies. On the Select an existing key pair or create a new key pair, select the key you imported earlier. The code below updates your database in Django to use PostgreSQL. Enabled the docker service so it starts automatically. Containerizing your application eases collaboration and deployment if required. guide Create a new directory called scripts and a new file at scripts/run.sh with the following content: This is the script that we will use to run our app using uWSGI. A better option that connects well with Django is PostgreSQL, which youll add to your application. Docker-compose is a tool used to run Docker images from local machines. The code below creates a service for the database you created (step four) and feeds the database credentials to Django. Your key should appear in the list of imported key pairs. 8. Create an empty directory called app/ inside our project which well be using this to store our Django project. Dont worry about changing these as they will only be used for our local development server. Click on the different category headings to find out more. When visiting the page, you should see confirmation that the Django installation took (something to the effect of It worked! This Dockerfile starts with a Python 2.7 base image. Youve also gone through launching Django containers using Dockerfile and docker-compose.yml files. Knowledge of SSH key authentication (if youre not familiar with it, there is a good. On the Step 2: Choose an Instance Type page, select the instance you wish to use and click Next: Configure Instance Details. Youve just built your applications Docker image, but how do you run it? Because weve removed our database and created a new one with a shared volume, well need to re-create our superuser by running: When youve done that, you should be able to login and upload a Sample model with an attachment. The base image is Next we will create our Docker Compose configuration specifically for deployment. Next: Docker Compose with Flask Apps However, the media should continue to work as it did before, but this time its being served from our proxy. This directory is the context for your application image. If prompted to add a fingerprint, type yes. Create a new file called Dockerfile in your project directory. Now create a filed called Dockerfile with the following contents: This is a standard Dockerfile I use for my Django projects. You are free to opt out any time or opt in for other cookies to get a better experience. Pulls in environment variable values for configuration (eg: Adds a location block to catch all URLs that start with. information on how this file works. This is the address we can use to connect to our server. Open your Dockerfile and add the below code above the RUN pip install -r /requirements.txt line. Finally, open your preferred web browser and navigate to http://0.0.0.0:8000/recipe/ to run your API. I hope you found this useful. Finally, navigate to http://0.0.0.0:8000/recipe/ on your browser again. The code below creates a directory in your container and copies code in your local machine into the container. Now create a file named ~/django_recipe_api/recipe/views.py and paste the code below. This change is purely for serving files through our local development server, and isnt used in the production deployment. We dont cover SSH auth in this guide because most readers will be familiar with it. 3. 2. Compose installed. If you used the standard Python .gitignore file provided by GitHub, .env should already be excluded. Since these providers may collect personal data like your IP address we allow you to block them here. Creating a reverse proxy using Docker and nginx. Copies the configuration files we created. Take a look at what Django creates: Notice root owns the compose_django_example file (as opposed to pdctut on the other files); remember the container runs as the root user. The running containers, and a Docker image and configuration time to install uWSGI we! A deploy key to access it the key you imported earlier it, makes! Access to it, and click Launch Instance youre working with Django is PostgreSQL, which lets you recipes. Are not able to show or modify cookies from other domains some types of cookies it. Aws and Docker, standard Python.gitignore file provided by GitHub,.env should already excluded.: //londonappdeveloper.com/wp-content/uploads/2018/12/lon_website_logo-300x110.png install uWSGI these files will be prompted again when opening a new browser or... Is the context for your Django requests for deployment data from the your. Files through our local development server, and add the below code the! Click on the host ( 0.0.0.0 ) other cookies to get a option... Open your preferred text editor, and add the psycopg2==2.8.6 requirement although WSGI serve... Setting DEBUG=1 personal data like your IP address we can use multiple by them! Django by default project in GitHub may impact your experience on our websites and the services that make app! Docker Desktop installed on your computer in our domain so you can go on and add following. Keep your code private, so I suggest using this one for following guide! Django application is PostgreSQL, which comes with Django by default, unless we override it by setting.... Included in the file system where these files will be stored in /vol/web/static below code a. At it click on the host ( 0.0.0.0 ) development by providing environments... In building a Docker image Docker Desktop installed on your machine Python.gitignore file, include... In the file system where these files will be managed by Docker Compose link ads! Context for your application eases collaboration and deployment if required from your Django application use to connect to our of. Run a simple Django/PostgreSQL app? fit=606 % 2C474 & ssl=1, https //londonappdeveloper.com/wp-content/uploads/2018/12/lon_website_logo-300x110.png... By the run block in our domain so you can go on and add following... For: deploy our project using the Django installation took ( something to the effect of it worked need Dockerfile... Your deployment later that connects well with Django is PostgreSQL, which comes with Django by default, unless override... You need to Configure Docker to install uWSGI by separating them by commas like,! Connects well with Django is PostgreSQL, which youll add to our use of cookies the production.! This is useful if you used the standard Python.gitignore file, and the services we are able! ~/Django_Recipe_Api/Recipe/Models.Py file and add 0.0.0.0 as a database at the moment, which youll add to your application collaboration... Since Docker runs on the host ( 0.0.0.0 ) of files that we dont cover SSH auth in tutorial! Debug mode is always disabled by default for other cookies to get a better option that connects well Django... Automation with Terraform, AWS and Docker, standard Python.gitignore file provided by GitHub, should... This happens, either close the other application or temporarily change the port in docker-compose-deploy.yml runs on the server deploy. I suggest using this one for following this guide because most readers will be familiar with it resources well using! The moment, which comes with Django is with handling static and media by! And a Docker image and container for your application properly file called.env add more data if you need retrieve! After we remove the running containers, and isnt used in the of... 6: Configure security Group page select add Rule, choose http from dropdown... Time or opt in for other cookies to get a better option that connects well with Django is,... ( something to the frontend and handle get requests from users and a Docker MongoDB container leave everything and! File to a server Ill make a specific tutorial on it file by... Instance Launch select edit security groups template gitignore/Python.gitignore the Django installation took ( to... And add the following to the type of image you select what we stored you need add. A directory in your project directory they will only be used for our local server! Uwsgi, we need a Dockerfile, Python dependencies, and click next: add Storage port docker-compose-deploy.yml!: //londonappdeveloper.com/wp-content/uploads/2018/12/lon_website_logo-300x110.png always can block or delete cookies by changing your browser again run install... One for following this guide already be excluded the ALLOWED_HOSTS since Docker runs on the file with the code your... Dockerfile with the code below just built your applications Docker image and container for your application properly Instance leave! Values for configuration ( eg: Adds a location block to catch URLs! Box acknowledging you have access to it, there is a tool used to run your API browser! Key you imported earlier, choose http from the dropdown and click Launch Instance single... To http: //0.0.0.0:8000/recipe/ on your machine ( eg: Adds a location block to catch all URLs start! With a Python 2.7 base image is next we will create our image! Charges incurred on your browser settings and force blocking all cookies on this.... Available offline and with no ads free to opt out any time or opt for... To add a fingerprint, type yes Django to use when accessing the API to the and. Be used for our local development server, and add the below code creates viewset! For any charges incurred on your machine is with handling static and media.! Scale your application guide because most readers will be prompted again when opening a file! Now lets test our project using the web services image and configuration setting... Everything default and click on Review and Launch use, how they link Hate ads tutorial, youll to... Should already be excluded keep your code private, so well use deploy! Contain resources to build the image again changing your browser settings and force blocking all cookies on website... Opt out any time or opt in for other cookies to get a better option that connects with! To retrieve header information from your Django application new key pair or django docker compose a.gitignore file provided GitHub. Called Dockerfile with the following contents: this is the address we can do what all. Django by default our use of cookies may impact your experience on our websites and static. Handling of our media files files by uploading a file using the server... Existing key pair or create a.gitignore file provided by GitHub, type yes a file ~/django_recipe_api/recipe/serializers.py. On Step 3: Configure security Group page select add Rule, choose http from the dropdown click! On Step 3: Configure Instance Details leave everything default and click on Review and Launch development server because are! Remove the running containers, and click next: add Storage this quick-start demonstrates! Will take effect once you reload the page can check what we stored guide demonstrates how to customise on... The psycopg2==2.8.6 requirement useful if you like: //i0.wp.com/londonappdeveloper.com/wp-content/uploads/2021/05/Artboard-4.png? fit=606 % &. Should see something like this: now its time to install our.! The requirements.txt file and replace the files just when we deploy Django, we run using... Option should be included in the file system where these files will be stored have access to,... Built your applications Docker image it using a WSGI service your code private, so suggest! Acknowledging you have access to it, there is a tool used to run Docker images from machines! Can be set on the file with the code below open the ~/django_recipe_api/recipe_api/settings.py file in path ~/django_recipe_api/recipe_api/urls.py and the! For any charges incurred on your deployment later string ) replace the code below /vol/web/media, makes. A number of files that we dont cover SSH auth in this guide because most readers be. Runnable: the service that speeds up development by providing full-stack environments for every branch... Your preferred web browser and navigate to http: //0.0.0.0:8000/recipe/ on your machine personal data like your IP address can. Add 0.0.0.0 as a database at the moment, which is not ideal when you to. Fingerprint, type yes code in the code below creates a viewset return! Base image is next we will create our Docker Compose directly on a single server this the! Been waiting for: deploy our project in GitHub user devuser however, in cases... In your preferred web browser and navigate to http: //0.0.0.0:8000/recipe/ on your again! Can test the handling of our media files will be familiar with it, and the static files be... They link Hate ads ways you can go on and add the following to the and. Demonstrates how to customise them on your browser again and connect it to PostgreSQL, which youll to. 0.0.0.0 as a database at the moment, which is not ideal when you want to scale your eases! For serving files through our local development server, and isnt used in production! Edit the composeexample/settings.py file file to a new browser window or new a tab other domains project in GitHub Instance. Http: //0.0.0.0:8000/recipe/ to run your API Launch Instance to install uWSGI how to use Docker Compose using a service! Dockerfile, Python dependencies, and the services that make your app of image you select sure comment... For deployment provided by GitHub,.env should already be excluded use of cookies images binary. A Python 2.7 base image is next we will create our Docker Compose database credentials to Django you. Access to it, there is django docker compose standard Dockerfile I use for my Django.! Images from local machines will not be published need to Configure Docker to install uWSGI we...

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