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Deploy Tomcat on KubeSphere

Apache Tomcat powers numerous large-scale, mission-critical web applications across a diverse range of industries and organizations. Tomcat provides a pure Java HTTP web server environment in which Java code can run.

This tutorial walks you through an example of deploying Tomcat 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 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 Tomcat from the App Store

On the Overview page of the project demo-project, click App Store in the upper-left corner.
Find Tomcat and click Install on the App Information page.
Set a name and select an app version. Make sure Tomcat 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 directly. Click Install to continue.
Wait until Tomcat is up and running.

Step 2: Access the Tomcat terminal

Go to Services and click the service name of Tomcat.
Under Pods, expand the menu to see container details, and then click the Terminal icon.
You can view deployed projects in /usr/local/tomcat/webapps.

Step 3: Access a Tomcat project from your browser

To access a Tomcat project outside the cluster, you need to expose the app through a NodePort first.

Go to Services and click the service name of Tomcat.
Click More and select Edit External Access from the drop-down list.
Select NodePort for Access Method and click OK. For more information, see Project Gateway.
Under Ports, you can see the port is exposed.
Access the sample Tomcat project through <NodeIP>:<NodePort>/sample in your browser.

Note

You may need to open the port in your security groups and configure related port forwarding rules depending on where your Kubernetes cluster is deployed.
For more information about Tomcat, refer to the official documentation of Tomcat.

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