Docker + PostgreSQL + pgAdmin

In this blog, you will learn how to connect your PostgreSQL to pgAdmin, which both run on docker.

Installation of Software

• To get started first, we have to install Docker.

• Follow this blog https://docs.docker.com/get-docker/ to install Docker.

Download Docker Images

• Let us pull the official docker images of PostgreSQL and pgAdmin.

  • PostgreSQL

      docker pull postgres:alpine
    

    • I will be using the Alpine version (smaller image) for this blog.

    • 

  • PgAdmin

      docker pull dpage/pgadmin4
    

    • 

  • I have both docker images already downloaded on my machine.

Starting Containers

• Let's first start our PostgreSQL container by running the following command.

    docker run -p 5432:5432 \
    -e POSTGRES_USER=postgres \
    -e POSTGRES_PASSWORD=root \
    -d postgres:alpine
  

• The above command runs our container in a detached mode.

• 

  Using the command docker ps -a to check our container status.

• 

• Starting the pgAdmin container using the below command

    docker run -p 80:80 \
        -e 'PGADMIN_DEFAULT_EMAIL=sbharath35@gmail.com' \
        -e 'PGADMIN_DEFAULT_PASSWORD=1234' \
        -d dpage/pgadmin4
  

  

• To see the containers running use the following command

    docker ps -a
  

  

• Our container's Postgres is running on port 5432 and pgAdmin is running on port 80.

Connecting Postgres to pgAdmin

• Once both containers are up and running, open your browser and open http://localhost:8080/ , enter your details, and log in.

• Click on Servers -> Register ->Server and a new dialog box will open.

• Give a name and click on Connection to add additional parameters.

• As our Postgres database is running inside a docker, we have to use "host.docker.internal" instead of "localhost". If you want to connect to a local Postgres database that is running on a host machine, use localhost.

• Use the port number, username, and password we mentioned while running the Postgres image and click on save. If all goes well, you will see the below dashboard.

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This is how you use pgAdmin without downloading any software. Hope you liked this blog 😀, see you soon, till then you can follow me on @twitter & @github