Docker

Running PostgreSQL using Docker Compose

Running PostgreSQL using Docker Compose
  1. How do I run PostgreSQL Docker?
  2. Should you run Postgres in Docker?
  3. What is Postgres Docker?
  4. Where does Postgres Docker store data?
  5. How do I know if Postgres is running?
  6. How do I run Docker?
  7. Is Docker good for production?
  8. What can I run in Docker?
  9. Is Docker a good idea?
  10. How do I use Docker compose up?
  11. How do I connect to PostgreSQL?
  12. Why do we use Docker containers?

How do I run PostgreSQL Docker?

Let me demonstrate by spinning up a few PostgreSQL containers on a windows laptop.

  1. STEP 1: Download Docker. First you want to download Docker. ...
  2. STEP 2: Run the Docker Quickstart Terminal. ...
  3. STEP 3: My first container. ...
  4. STEP 4: Select PostgreSQL image. ...
  5. STEP 5: Test your container. ...
  6. STEP 6: Connect via EXEC. ...
  7. STEP 7: GUI PgAdmin.

Should you run Postgres in Docker?

If you're working on a small project, and are deploying to a single machine, it's completely okay to run your database in a Docker container. Be sure to mount a volume to make the data persistent, and have backup processes in place. Try to restore them every once in a while to make sure your backups are any good.

What is Postgres Docker?

PostgreSQL, also referred to as Postgres, is an open-source, object-relational database management system. ... Today, Postgres is one of the most widely used Docker images that run in containers. The popularity of containerized databases is attributed to the simplicity with which they can be deployed.

Where does Postgres Docker store data?

The volume name will be postgres-data , and Docker will automatically create it (just using storage on the Docker host's local disk) if a volume with this name doesn't already exist. PostgreSQL stores its data in /var/lib/postgresql/data , so we're mounting our volume to that path.

How do I know if Postgres is running?

How to check if Postgres is running?

  1. -u postgres will only look at processes owned by the user postgres.
  2. -f will look at the pattern in the whole command line, not only the process name.
  3. -a will display the whole command line instead of only the process number.
  4. -- will allow a pattern that begins by - (like our -D )

How do I run Docker?

How to Use the docker run Command

  1. Run a Container Under a Specific Name. ...
  2. Run a Container in the Background (Detached Mode) ...
  3. Run a Container Interactively. ...
  4. Run a Container and Publish Container Ports. ...
  5. Run a Container and Mount Host Volumes. ...
  6. Run a Docker Container and Remove it Once the Process is Complete.

Is Docker good for production?

In a production environment, Docker makes it easy to create, deploy, and run applications inside of containers. ... Because of this, Docker images suited for production should only have the bare necessities installed. There are several ways to decrease the size of Docker images to optimize for production.

What can I run in Docker?

You can run both Linux and Windows programs and executables in Docker containers. The Docker platform runs natively on Linux (on x86-64, ARM and many other CPU architectures) and on Windows (x86-64). Docker Inc. builds products that let you build and run containers on Linux, Windows and macOS.

Is Docker a good idea?

There are many good things about Docker. It packs, ships, and runs applications as a lightweight, portable, and self-sufficient containerization tool. Docker is great for businesses of all sizes. When you are working on a piece of code in a small team, it eliminates the “but it works on my machine” problem.

How do I use Docker compose up?

Using Compose is basically a three-step process:

  1. Define your app's environment with a Dockerfile so it can be reproduced anywhere.
  2. Define the services that make up your app in docker-compose. ...
  3. Run docker compose up and the Docker compose command starts and runs your entire app.

How do I connect to PostgreSQL?

Set Up a PostgreSQL Database on Windows

  1. Download and install a PostgreSQL server. ...
  2. Add the PostgreSQL bin directory path to the PATH environmental variable. ...
  3. Open the psql command-line tool: ...
  4. Run a CREATE DATABASE command to create a new database. ...
  5. Connect to the new database using the command: \c databaseName.
  6. Run the postgres.

Why do we use Docker containers?

Because Docker containers encapsulate everything an application needs to run (and only those things), they allow applications to be shuttled easily between environments. Any host with the Docker runtime installed—be it a developer's laptop or a public cloud instance—can run a Docker container.

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