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Local Kubernetes development with LXD

Running Kubernetes locally has obvious development advantages, such as lower cost and faster iteration than constantly deploying and tearing down clusters on a public cloud. Ideally, a Kubernetes developer can spawn all necessary nodes inside local containers and test new configurations as they are committed. This page will show you how to deploy a cluster to LXD containers on a local machine.

Before you begin

Install conjure-up, a tool for deploying big software. Add the current user to the lxd user group.

sudo snap install conjure-up --classic
sudo usermod -a -G lxd $(whoami)

Note: If conjure-up asks you to “Setup an ipv6 subnet” with LXD, answer NO. ipv6 with Juju/LXD is currently unsupported.

Deploying Kubernetes

Start the deployment with:

conjure-up kubernetes

For this walkthrough we are going to create a new controller - select the localhost Cloud type:

Select Cloud

Deploy the applications:

Deploy Applications

Wait for Juju bootstrap to finish:

Bootstrap

Wait for our Applications to be fully deployed:

Waiting

Run the final post-processing steps to automatically configure your Kubernetes environment:

Postprocessing

Review the final summary screen:

Final Summary

Accessing the Cluster

You can access your Kubernetes cluster by running the following:

kubectl --kubeconfig=~/.kube/config

Or if you’ve already run this once it’ll create a new config file as shown in the summary screen.

kubectl --kubeconfig=~/.kube/config.conjure-up

The purpose of using LXD on a local machine is to emulate the same deployment that a user would use in a cloud or bare metal. Each node is treated as a machine, with the same characteristics as production. Each node is a separate container, which runs Docker containers and kubectl inside (see Cluster Intro for more info).

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