Visual Studio Code Kubernetes Tools

A Visual Studio Code extension for interacting with Kubernetes clusters. This extension combines the vs-kubernetes extension by @brendandburns and the vs-helm extension by @technosophos.

Configuring

Setting up your environment

This extension assumes that you have a Dockerfile in the root directory of your project.

It also assumes that you have the following binaries on your PATH:

• kubectl
• docker
• git
• helm (optional)
• draft (optional)

If you don't have those on your PATH then the extension will fail in unexpected ways.

For setting up kubectl you have a couple of additional options:

• If kubectl is not on your PATH then you can tell the extension its location using the vs-kubernetes.kubectl-path workspace setting. This should be the full file name and path of the kubectl binary.
• If you are using the extension to work with Azure Container Services or Azure Kubernetes Services then you can install and configure kubectl using the Kubernetes Configure from Cluster command.

Setting up your environment for Helm and Draft

helm support requires that you have Helm installed and configured. From there you should also install helm-template:

$ helm plugin install https://github.com/technosophos/helm-template

To use the Helm: DryRun command, your Kubernetes cluster must be running Tiller.

For setting up draft you can provide a path to the binary via configuration (vs-kubernetes.draft-path) if it is not on your PATH.

Setting up the image repository path

If you want to use the Kubernetes: Run and Kubernetes: Debug features then you need to have correctly set the user and repository for your images. You can do this via preferences in VS Code:

File > Preferences

And then add:

{
  ...
  "vsdocker.imageUser": "<your-image-prefix-here>",
  ...
}

Where <your-image-prefix-here> is something like docker.io/brendanburns.

Features

vs-kubernetes supports a number of commands for interacting with Kubernetes; these are accessible via the command menu (Ctrl+Shift+P) and may be bound to keys in the normal way.

General commands

• Kubernetes: Load - Load a resource from the Kubernetes API and create a new editor window.
• Kubernetes: Get - Get the status for a specific resource.
• Kubernetes: Logs - Get logs for a pod in an output window.

Commands while viewing a Kubernetes file

• Kubernetes: Explain - Use the kubectl explain ... tool to annotate Kubernetes API objects
• Kubernetes: Create - Create an object using the current document
• Kubernetes: Delete - Delete an object contained in the current document.
• Kubernetes: Apply - Apply changes to an object contained in the current document.
• Kubernetes: Expose - Expose the object in the current document as a service.

Commands for application directories

• Kubernetes: Run - Run the current application as a Kubernetes Deployment
• Kubernetes: Terminal - Open an interactive terminal session in a pod of the Kubernetes Deployment
• Kubernetes: Exec - Run a command in a pod of the Kubernetes Deployment
• Kubernetes: Debug - Run the current application as a Kubernetes Deployment and attach a debugging session to it (currently works only for Node.js deployments)
• Kubernetes: Remove Debug - Remove the deployment and/or service created for a Kubernetes Debug session

Configuration commands

• Kubernetes Configure from Cluster - Install and configure the Kubernetes command line tool (kubectl) from an Azure Container Service (ACS) or Azure Kubernetes Service (AKS) cluster

Helm support

Helm is the package manager for Kubernetes and provides a way for you to define, install and upgrade applications using 'charts.' This extension provides a set of tools for creating and testing Helm charts:

• Syntax highlighting for YAML + Helm Templates
• Autocomplete for Helm, Sprig, and Go Tpl functions
• Help text (on hover) for Helm, Sprig, and Go Tpl functions
• Snippets for quickly scaffolding new charts and templates
• Commands for...
  • Helm: Lint - Lint your chart
  • Helm: Preview Template - Open a preview window and preview how your template will render
  • Helm: Template - Run your chart through the template engine
  • Helm: DryRun - Run a helm install --dry-run --debug on a remote cluster and get the results
  • Helm: Version - Get the Helm version
  • Helm: Dependency Update - Update a chart's dependencies.
• Code lenses for:
  • requirements.yaml (Add and update dependencies)
• Right-click on a chart .tgz file, and choose inspect chart to preview all configurable chart values.

Draft support

Draft is a tool to simplify the process of developing a new Kubernetes application, by creating the necessary deployment components and by keeping code in the cluster in sync with the code on your computer.

• Draft: Create - Set up Draft in the current folder (prerequisite for syncing using Draft)
• Draft: Up - Runs Draft to watch the current folder and keep the cluster in sync with it

NOTE: Draft itself is in 'draft' form and is not yet stable. So the extension support for Draft is strictly experimental - assumptions may break, and commands and behavior may change!

Extension Settings

• vs-kubernetes - Parent for Kubernetes-related extension settings
  • vs-kubernetes.namespace - The namespace to use for all commands
  • vs-kubernetes.kubectl-path - File path to the kubectl binary. Note this is the binary file itself, not just the directory containing the file. On Windows, this must contain the .exe extension.
  • vs-kubernetes.draft-path - File path to the draft binary. Note this is the binary file itself, not just the directory containing the file. On Windows, this must contain the .exe extension.
• vsdocker.imageUser - Image prefix for docker images e.g. 'docker.io/brendanburns'

Known Issues

• Kubernetes: Debug command currently works only with Node.js applications
• For deeply nested Helm charts, template previews are generated against highest (umbrella) chart values (though for Helm: Template calls you can pick your chart)

Release Notes

See the change log.

Contributing

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.microsoft.com.

When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

For technical information about contributing, see CONTRIBUTING.md.