Helm Install - Shell-Bash

Helm is a popular package manager and application deployment tool for Kubernetes. It allows developers to easily install, upgrade, and manage complex applications on Kubernetes clusters. In this article, we will discuss how to use the helm install command in Shell-Bash and walk you through the basics of deploying an application using Helm.

Prerequisites

Before we begin with the installation process, make sure your system meets the following requirements:

• Shell-Bash environment
• Kubernetes cluster installed and running
• Helm installed on your system

Installation

To install an application using Helm, you first need to create a Helm chart. A Helm chart is a collection of files that describe a related set of Kubernetes resources. Helm charts can be versioned and accessed via repositories, similar to other software packages.

Assuming you have a Helm chart, you can use the helm install command to deploy it to your Kubernetes cluster. Here's a basic syntax for the helm install command:

helm install [RELEASE-NAME] [CHART-NAME]

• RELEASE-NAME: A unique name for the release (deployment) of the application
• CHART-NAME: The name of the Helm chart

For example, to install a chart called myapp, you would run the following command:

helm install my-release myapp

This command will deploy the application into your Kubernetes cluster and create a new release called my-release.

Additional Options

The helm install command has many additional options that you can use to customize your deployment. Here are some commonly used options:

• --namespace: The Kubernetes namespace where the application will be installed.
• --set: Override values in the Helm chart's values.yaml file.
• --values: A YAML file containing custom configuration values for the chart.
• --dry-run: Simulate a Helm install without actually deploying the application.
• --debug: Print debugging information during deployment.

For example, to override the image.tag value in the values.yaml file to v2.0, you would run the following command:

helm install my-release myapp --set image.tag=v2.0

Conclusion

In this article, we went over the basics of using the helm install command in Shell-Bash to deploy applications to Kubernetes clusters. We also covered some of the additional options that you can use to customize your deployment. By using Helm, developers can easily manage complex applications and streamline their deployment workflows.