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This article mainly explains "how to run PostgreSQL on Kubernetes". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to run PostgreSQL on Kubernetes".

Install PostgreSQL Operator

The * step to use PostgreSQL with Kubernetes is to install an Operator. With the help of a quick start script for Crunchy for Linux systems, you can start and run open source Crunchy PostgreSQL Operator in any Kubernetes-based environment.

There are some necessary prerequisites for quick start scripts:

The Wget tool is installed.

The kubectl tool is installed.

A StorageClass has been defined in your Kubernetes.

A user account with cluster privileges that can access Kubernetes to install Operator's RBAC rules.

A namespace for PostgreSQL Operator.

Executing this script will give you a default PostgreSQL Operator deployment, which assumes that you use dynamic storage and a StorageClass called standard. This script allows the user to override these default values with custom values.

You can download this quick launch script and set its permissions to executable with the following command:

Wget chmod + x. / quickstart.sh

Then you run the quick start script:

. / examples/quickstart.sh

After the script prompts you for basic information about the Kubernetes cluster, it will do the following:

Download the Operator configuration file

Set the $HOME/.pgouser file as the default setting

Deploy Operator with Kubernetes Deployment

Set your .bashrc file to contain the Operator environment variable

Set your $HOME/.bash_completion file to pgo bash_completion file

During the execution of the Quick start script, you will be prompted to set RBAC rules on your Kubernetes cluster. At the other terminal, execute the command prompted by the Quick start command.

Once the script is executed, you will be prompted to set a port to forward to PostgreSQL Operator pod. On another terminal, perform this port forwarding operation; this will allow you to start executing commands on PostgreSQL Operator! Try entering the following command to create a cluster:

Pgo create cluster mynewcluster

You can enter the following command to test your cluster health:

Pgo test mynewcluster

Now you can manage your PostgreSQL database in Kubernetes! You can find very comprehensive commands in the official documentation, including expansion, high availability, backup, and so on.

Thank you for reading, the above is the content of "how to run PostgreSQL on Kubernetes". After the study of this article, I believe you have a deeper understanding of how to run PostgreSQL on Kubernetes, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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