postgres database does not exist docker

What's going on? This example has a second image and this will be used as the service image. I won't introduce you to docker or Postgres - you should have some basic knowledge in this area although I will follow you with every step. You should be able to use SqlServer in very similar way - just change the db service in compose file, Program.cs of DbMigrator to work with SqlServer and of course connection string. For example, CIRCLE_NODE_INDEX and CIRCLE_NODE_TOTAL are related to concurrent execution environments. By default, the Postgres data will be only in the container. Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. This can be done by setting the PGDATA: /dev/shm/pgdata/data environment variable in the service container image config. That's bad. I like to use containers for some of my tools. With good docker-compose you simply don't have to worry about that. Docker is selected for the executor and the first image is the primary container where all execution occurs. Let's see what is in the database; One may ask why? Refer to the Database Configuration Examples document for additional configuration file examples. The first image is the programming language Python. We welcome your contributions. It embraces transitions instead of "state". Docker society (and the docker team) advises to not create monolithic Dockerfiles (so containing multiple tech things). No magic here. Do you want to grow into Web Development? If you don't want to put your environment variable in your Docker Compose file, you can create an environment file at your project root. Set the POSTGRES_USER environment variable in your CircleCI config to postgres to add the role to the image as follows: The steps run checkout first, then install the Postgres client tools. With one command, you can also shut down all the environment and free your computer from work. Copy rest of the files into the container. Let's get our hands dirty again. When you finish working on your project, I recommend you to stop the running Postgres Docker container using the command below: Once you want to work again on your project, you can use docker-compose up again to run your database. So we already have a postgres instance running in docker container and we are able to incrementally apply migrations using DbUp. We can list databases using \l command or use sql to do whatever we wnat. If you're not family with Docker yet, I recommend you to read my two previous articles. Once you created the Docker Compose file, your folder architecture should be similar as below. As a reminder, the Postgres database is accessible on localhost with the port 5432. Work around this problem by using dockerize to wait for dependencies. Two commands follow the postgresql-client installation that interact with the database service. Our support engineers are available to help with service issues, billing, or account related questions, and can help troubleshoot build configurations. When I'm working on a new project, I like to have a clean environment. This file should be named .env, and it should be located at the root of your repository with your Docker Compose. # but you can use the name of your choice. To test your database, you should connect to it using the software or programming language of your choice. I made some minor changes as the main example on the docs is for sqlserver. It supports: The assumption around this library is straightforward. The example you will build comes with an initial configuration for your projects. For example, for Python, you might install psycopg2 so that you can interface with the PostgreSQL database. Create Dockerfile in the DbMigrator project like the following: It's easy one. Navigate to new project fodler and add two packages. 2022 Circle Internet Services, Inc., All Rights Reserved. Note: CircleCI injects a number of convenience environment variables into the primary container that you can use in conditionals throughout the rest of your build. Add more layers on top of postgres image. # Note: You are free to change your computer's port, # but take into consideration that it will change the way, # The PostgreSQL user (useful to connect to the database), # The PostgreSQL password (useful to connect to the database), # The PostgreSQL default database (automatically created at first launch), # The `env_file` tag allows us to declare an environment file, # The name of your environment file (the one at the repository root). If you're here today, it's because you probably need it in your project! CircleCI provides pre-built images for languages and services like databases with a lot of conveniences added into the images on CircleCI Docker Hub.css-1ie5e7y{display:inline-block;width:1rem;height:1rem;margin-left:-5px;}. See the Build Specific Environment Variables document for details. This pre-built circleci image includes a database and a user already. As I mentioned before, one of the advantages of using Docker Compose for Postgres is to avoid background processes on your computer. The configuration file will be detailed line per line, so you will be able to test it and configure it for your needs. Use \c dbname to connect to specific database. # You don't need to create the `db-data` folder. # You should know that Docker Compose works with services. Let's check if this works. When it comes to DbUp it is a .NET Library that helps you deploy changes to your SQL database. Check my blog again for next post about some tips for working with migrations! # Note: This may change the commands you are going to use a little bit. "Host=localhost;User Id=postgres;Password=Secret!Passw0rd;Database=crazy_database;Port=5432", "Server=localhost,1433;Initial Catalog=TravelServicesConsumer;User ID=sa;Password=Strong!Passw0rd;MultipleActiveResultSets=True;Connection Timeout=30;", 'DbMigrator.SqlScripts.001_AddTable_Customer.sql', 'DbMigrator.SqlScripts.002_FillSampleData.sql', "dotnet DbMigrator.dll \"${DB_CONNECTION}\"", https://github.com/marcingolenia/postgres-dbup. Add the following to your config.yml file to enable pg_* or equivalent database utilities: Using multiple Docker containers for your jobs may cause race conditions if the service in a container does not start before the job tries to use it. It creates a version table to keep track which scripts were executed and applies new ones incrementally. Is here: https://github.com/marcingolenia/postgres-dbup. This is a game changer when you want to run integration-tests. There is no long-running process that docker can attach to (some kind of web listener on specific port). Everything you have to do is docker-compose up and you are ready to go with all your databases + schema up to date! Let's add restart on-failure policy to compose yml file: Let's run everything again. As I explained in the Postgres Docker Compose comments, the environment variables are defined in the environment part of the configuration. Let's check the compose logs using docker-compose logs. Think for a while this should make sense! import the Postgres image in the Docker Compose, configure the database to fit your needs and use it on your computer. If your are not sure what is going on you should definetely check the docker docs. # In this example, we share the folder `db-data` in our root repository, with the default PostgreSQL data path. Just run docker-compose up -d. I have this output: Where is our migrator? Create other docker-image with netcore and DbMigrator. See Pre-Built CircleCI Services Images for the list of images. This tutorial teaches you how to create a Postgres Docker Compose file. Example scripts looks like this: Having those things let's run the migrator again. If you decide to delete the container, all the data are going to disappear definitively. This guide, as well as the rest of our docs, are open source and available on, To report a problem in the documentation, or to submit feedback and comments, please. We already can run DbUp using dotnet CLI against dockerized postgres. The cimg/postgres:14.0 image doesnt install any client-specific database adapters. CircleCI Documentation by CircleCI is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. If you want to read and use the complete Postgres Docker Compose example, I've hosted the code on my Github. First navigate to the directory with your docker-compose.yml and run dotnet new console -o DbMigrator or any other name. It is still possible without DbUp being dockerized but the CI scripts are growing with more and more commands. You should be able to use postgres in your docker-compose by other services without waiting to some migrations to apply (for example to run migrations for other database. # Its syntax is as follows: [folder path on our machine]:[folder path to retrieve in the container]. Postgres didn't make it to be up sooner than migrator so the connection was refused. I'm helping people grow into Web Development by sharing resources and tips on my Twitter account. redis-cli ping 2>/dev/null ; do sleep 1 ; done, dockerize -wait http://localhost:80 -timeout 1m. To use pg_dump, pg_restore and similar utilities requires some extra configuration to ensure that pg_dump invocations will also use the correct version. Let's create new netcore console app. Check the docs to find out more. The URL tells it that it is a PostgreSQL database, so it will default to the PostgreSQL default port. The main two steps of the configuration will be: Below, you will find the Docker Compose file. # By default, a Postgres database is running on the 5432 port. You can use your IDE but I will stick with CLI for now. The service image gives access to additional services like databases. Use \q command to exit psql and of course ctr+d combination to leave container in detached mode. # Official Postgres image from DockerHub (we use the last version). CircleCI is always seeking ways to improve your experience with our platform. In short (number contains script line numbers): Line 3-4 embrace docker layers caching so we don't need to restore the packages each time we edit a DbMigrator source file. # For example, a service, a server, a client, a database # We use the keyword 'services' to start to create services. It will share the database date inside of your container with a local folder of your computer. You can do it in your IDE or in csproj. One of the things I dislike the most is installing "big" tools on my computers (for example, a database engine). PostgreSQL is one of the most used database engines nowadays. The Python image has pip installed and -browsers for browser testing. After we enter interactie mode let's run psql -U postgres. When the database service spins up, it automatically creates the database circle_test and the postgres role that you can use to log in and run your tests. Now it is time to update our compose-file. They will teach you all the necessary knowledge to understand this tutorial to run Postgres in Docker. To reach your goal of creating a Postgres Docker Compose file, we will use the image for PostgreSQL available on Docker Hub. So, you can begin with using that user and database without having to set it up yourself. Before running your file, I want to share with you some optional configurations. This document describes how to use the official CircleCI pre-built Docker container images for a database service in CircleCI. Works for me: Let's add 2 basic sql scripts to create simple tables: Set the script files as embedded ressources. Installing packages in images requires administrator privileges, therefore sudo is used - a password is not required. Feel free to use it for your projects! To do that, you can add the database section in the services node of your Docker Compose. The first step consists of creating the configuration file to run Postgres in Docker. With this first version of your Postgres Docker Compose file, you will be able to run the database and connect to it! Each line is commented on so that you can understand the purpose of each instruction. This section describes additional optional configuration for further customizing your build and avoiding race conditions. If you would like to share feedback, Our support engineers are available to help with service issues, billing, or account related questions, and can help troubleshoot build configurations. The following example shows a .circleci/config.yml file with one job called build. GitHub: Postgres Docker Compose example (ready to use). Then the database tests run to create a table and insert a value into it. You can find the connection information (the username, the password, and the default database). The depends_on tells docker that even if we decide to run this command: I hope you will enjoy this way of database development. Run dotnet run we should see this: We can connect to docker container again and list databases as described in previous point. These steps are not mandatory, and to keep the Postgres Docker Compose example simple, we will not use them at the tutorial end. Let dbup create the crazy_database for us. For example, your PostgreSQL container might be running, but might not be ready to accept connections. This image will simplify the job by providing all the dependencies to run Postgres in Docker. If you want that your Postgres Docker Compose find the environment variables, you should add the following lines: Your Docker Compose will use the environment variables defined inside the .env to configure the database. Perfect! Multiply this act by few times per day and you can save some time for coffee! In this example, the config installs the PostgreSQL client tools, postgresql-client via apt-get, to get access to psql. The layers will contain netcore and DbMibrator. First let's check for running containers: Let's enter containers bash and check the db schema: One thing you may run into when playing with docker: Just add .dockerignore file with this content: And you are good to go (we've just ignored some visual studio internal things from docker commands ie copy).

Operation Not Permitted Docker-compose,