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Deploy RadonDB PostgreSQL on KubeSphere

RadonDB PostgreSQL is an open source, cloud-native, and highly available cluster solution based on PostgreSQL database system.

This tutorial demonstrates how to deploy RadonDB PostgreSQL from the App Store of KubeSphere.

Prerequisites

Please make sure you enable the OpenPitrix system.
You need to create a workspace, a project, and a user account (project-regular) for this tutorial. The account needs to be a platform regular user and to be invited as the project operator with the operator role. In this tutorial, you log in as project-regular and work in the project demo-project in the workspace demo-workspace. For more information, see Create Workspaces, Projects, Users and Roles.

Hands-on Lab

Step 1: Deploy RadonDB PostgreSQL from the App Store

On the Overview page of the project demo-project, click App Store in the upper-left corner.
Click Database & Cache under Categories.
Find RadonDB PostgreSQL and click Install on the App Information page.
Set a name and select an app version. Make sure RadonDB PostgreSQL is deployed in demo-project and click Next.
In App Settings, you can use the default settings or customize the settings by editing the YAML file. When you finish, click Install.
Wait until RadonDB PostgreSQL is up and running.

Step 2: View PostgreSQL cluster status

On the Overview page of the project demo-project, you can see a list of resource usage in the current project.
In Workloads under Application Workloads, click the StatefulSets tab, and then you can see the StatefulSet is up and running.

Click the StatefulSet to go to its detail page. You can see the metrics in line charts over a period of time under the Monitoring tab.
In Pods under Application Workloads, you can see all the Pods are up and running.
In Volumes under Storage, you can see the PostgreSQL Cluster components are using persistent volumes.

Volume usage is also monitored. Click a volume item to go to its detail page.

Step 3: Access RadonDB PostgreSQL

Go to Pods under Application Workloads and click a Pod to go to its details page.
On the Resource Status page, click the Terminal icon.
In the displayed dialog box, run the following command and enter the user password in the terminal to use the app.
```
psql -h <Pod name> -p 5432 -U postgres -d postgres
```
If you want to access RadonDB PostgreSQL outside the cluster, see the open-source project of RadonDB PostgreSQL in detail.

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