This document serves as a step-by-step guide for expert developers looking to build and start the Kubernetes client-go project. Below are detailed instructions and code examples to assist in this process.

Prerequisites

Ensure that you have Go installed on your development machine. The Kubernetes client-go library is written in Go and relies on Go modules for dependency management.

Step 1: Clone the Repository

Begin by cloning the client-go repository from GitHub. Use the following command:

git clone https://github.com/kubernetes/client-go.git
cd client-go

Step 2: Set Up Your Go Environment

Make sure your Go environment is set up correctly. You can verify your Go version by running:

go version

You should be using a version compatible with the client-go library. Check the repository documentation for the required Go version.

Step 3: Use the Correct Module Name

The Go Module name for client-go is k8s.io/client-go. As such, it influences the output of the go build command. To ensure that your project recognizes the module correctly, confirm that your working directory is set to the root of the client-go repository.

Step 4: Build the Project

To build the project, run the following command in the root of the client-go directory:

go build ./...

This command compiles all packages within the project without using the vendor directory. The ... wildcard ensures that you include all subdirectories, making it convenient for building larger projects with multiple packages.

Step 5: Start an Example Application

Once the build completes successfully, you can start experimenting with the library. Here is an example of how to utilize the leader election package in client-go. You may reference the example in the provided directory structure.

Example: Using Leader Election

Navigate to the leader election example directory:

cd examples/leader-election

You can run the example program by executing:

go run main.go

This example demonstrates how to implement leader election in a Kubernetes environment.

Step 6: Testing

To run the tests and ensure everything is working correctly, you can execute:

go test ./...

This command tests all packages, providing feedback on any failures or issues.

Conclusion

By following the steps outlined above, you should be able to successfully build and start the client-go project for further development or experimentation with Kubernetes. Refer to the official documentation for additional insights on specific functionalities and advanced usage.

For more information on installation and dependencies, see INSTALL.md in the repository.