bootkube

Bootkube

Bootkube is a helper tool for launching self-hosted Kubernetes clusters.

When launched, bootkube will act as a temporary Kubernetes control-plane (api-server, scheduler, controller-manager), which operates long enough to bootstrap a replacement self-hosted control-plane.

Additionally, bootkube can be used to generate all of the necessary assets for use in bootstrapping a new cluster. These assets can then be modified to support any additional configuration options.

If you are interested in the design and details see the bootkube design document.

Guides

• GCE Quickstart
• AWS Quickstart
• CoreOS Baremetal
• Vagrant Single-Node
• Vagrant Multi-Node

Usage

Bootkube has two main commands: render and start

Render assets

Bootkube can be used to render all of the assets necessary for bootstrapping a self-hosted Kubernetes cluster. This includes generation of TLS assets, Kubernetes object manifests, and a kubeconfig to connect to the bootstrapped cluster.

To see available options, run:

bootkube render --help

Example:

bootkube render --asset-dir=my-cluster

The resulting assets can be inspected / modified in the generated asset-dir.

Start bootkube

To start bootkube use the start subcommand.

To see available options, run:

bootkube start --help

Example:

bootkube start --asset-dir=my-cluster

Building

First, clone the repo into the proper location in your $GOPATH:

go get -u github.com/kubernetes-incubator/bootkube
cd $GOPATH/src/github.com/kubernetes-incubator/bootkube

Then, to build:

make

And optionally, to install into $GOPATH/bin:

make install

Conformance Tests

This repository includes scripts for running the Kubernetes conformance tests agains the hack/single-node and hack/multi-node launched clusters.

To run the conformance tests:

make conformance-single

or

make conformance-multi

Roadmap

• Document, test, and create best practice around disaster recovery
• Work upstream to resolve the long-term self-hosted bootstrapping
• Self-host other components like etcd and networking to prove the model
• Get the concept of kubelet checkpointing upstreamed
• Prove out the self-hosted model on all new releases of k8s and different platforms
• Document best-practices for upgrades and upstream the idea of a upgradable daemonset

License

bootkube is under the Apache 2.0 license. See the LICENSE file for details.