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Tectonic Installer

Tectonic is built on pure-upstream Kubernetes but has an opinion on the best way to install and run a Kubernetes cluster. This project helps you install a Kubernetes cluster the "Tectonic Way". It provides good defaults, enables install automation, and is customizable to meet your infrastructure needs.

Goals of the project:

  • Install Kubernetes clusters
  • Secure by default (uses TLS, RBAC by default, OIDC AuthN, etcd)
  • Automatable install process for scripts and CI/CD
  • Deploy on any infrastructure: Amazon AWS, Microsoft Azure, OpenStack, Google Cloud, bare metal
  • Run on any OS: Container Linux (the default), RHEL, Ubuntu, and others
  • Customizable and modular: Change DNS providers, security settings, authentication providers
  • Highly Available by default: Deploy all Kubernetes components HA, use etcd Operator

Getting Started

To use a tested release on a supported platform, follow the links below.

To hack or modify the templates or add a new platform, use the scripts in this repo to boot and tear down clusters.

Official releases

See the official Tectonic documentation:

Hacking

These instructions can be used for the official stable platforms listed above, and for the following alpha/beta platforms:

Go and Source

Install Go if not already installed.

Then get the Tectonic Installer source code:

go get github.com/coreos/tectonic-installer
cd $(go env GOPATH)/src/github.com/coreos/tectonic-installer

Terraform

The Tectonic Installer releases include a build of Terraform. See the Tectonic Installer release notes for information about which Terraform versions are compatible.

The latest Terraform binary may not always work as Tectonic Installer, which sometimes relies on bug fixes or features not yet available in the official Terraform release.

Yarn (optional)

The Yarn JavaScript package manager is required for building the frontend code. On OS X, install using Homebrew: brew install yarn.

Common Usage

Choose your platform

First, set the PLATFORM= environment variable. This example will use PLATFORM=azure.

Initiate the Cluster Configuration

Use make to create a new directory build/<cluster-name> to hold all module references, Terraform state files, and custom variable files.

PLATFORM=azure CLUSTER=my-cluster make localconfig

Configure Cluster

Set variables in the build/<cluster-name>/terraform.tfvars file as needed. Available variables are found in the platforms/<PLATFORM>/config.tf and platforms/<PLATFORM>/variables.tf files.

Examples for each platform can be found in the examples directory.

Terraform Lifecycle

plan, apply, and destroy are provided as make targets to ease the build directory and custom binary complexity.

PLATFORM=azure CLUSTER=my-cluster make plan

PLATFORM=azure CLUSTER=my-cluster make apply

PLATFORM=azure CLUSTER=my-cluster make destroy

Tests

See tests/README.md.