dockerfiles/postgres

Clear Linux* OS postgres container image

What is this image?

clearlinux/postgres is a Docker image with postgres running on top of the official clearlinux base image.

PostgreSQL is a powerful, open source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.

For other Clear Linux* OS based container images, see: https://hub.docker.com/u/clearlinux

Why use a clearlinux based image?

Clear Linux* OS is an open source, rolling release Linux distribution optimized for performance and security, from the Cloud to the Edge, designed for customization, and manageability.

Clear Linux* OS based container images use:

• Optimized libraries that are compiled with latest compiler versions and flags.
• Software packages that follow upstream source closely and update frequently.
• An aggressive security model and best practices for CVE patching.
• A multi-staged build approach to keep a reduced container image size.
• The same container syntax as the official images to make getting started easy.

To learn more about Clear Linux* OS, visit: https://clearlinux.org.

Deployment:

Deploy with Docker

The easiest way to get started with this image is by simply pulling it from Docker Hub.

*Note: This container uses the same syntax as the official postgres image.

1. Pull the image from Docker Hub:

   docker pull clearlinux/postgres
   

2. Start a container using the examples below:

   docker run -p 5432:5432 -e POSTGRES_PASSWORD=secret -d clearlinux/postgres
   

Deploy with Kubernetes

This image can also be deployed on a Kubernetes cluster, such as minikube.The following example YAML files are provided in the repository as reference for Kubernetes deployment:

• postgres-deployment.yaml: example using default configuration with secret to create a basic postgres service.
• postgres-deployment-conf.yaml: example using your own custom configuration with secret to create postgres service.

Steps to deploy Postgres on a Kubernetes cluster:

1. Create secret for postgres service.

   kubectl create secret generic postgres-config \
   --from-literal=POSTGRES_DB=<your-postgres-db> \
   --from-literal=POSTGRES_PASSWORD=<your-postgres-pwd> \
   --from-literal=POSTGRES_USER=<your-postgres-user>
   

2. If you want to deploy postgres-deployment.yaml

   kubectl create -f postgres-deployment.yaml
   

   Or if you want to deploy postgres-deployment-conf.yaml

   kubectl create -f postgres-deployment-conf.yaml
   

3. Install PostgreSQL bundle and connect to the service, where 30001 is the port number defined in your service.

   swupd bundle-add postgresql
   psql -h<nodeIP> -U<your-postgres-user> --password -p30001 <your-postgres-db>
   

Build and modify:

The Dockerfiles for all Clear Linux* OS based container images are available at https://github.com/clearlinux/dockerfiles. These can be used to build and modify the container images.

1. Clone the clearlinux/dockerfiles repository.

   git clone https://github.com/clearlinux/dockerfiles.git
   

2. Change to the directory of the application:

   cd postgres/
   

3. Build the container image:

   docker build -t clearlinux/postgres .
   

   Refer to the Docker documentation for default build arguments. Additionally:

   • swupd_args - specifies arguments to pass to the Clear Linux* OS software manager. See the swupd man pages for more information.

Licenses

All licenses for the Clear Linux* Project and distributed software can be found at https://clearlinux.org/terms-and-policies