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Typhoon

Typhoon is a minimal and free Kubernetes distribution.

Minimal, stable base Kubernetes distribution
Declarative infrastructure and configuration
Free (freedom and cost) and privacy-respecting
Practical for labs, datacenters, and clouds

Typhoon distributes upstream Kubernetes, architectural conventions, and cluster addons, much like a GNU/Linux distribution provides the Linux kernel and userspace components.

Features

Kubernetes v1.17.0 (upstream)
Single or multi-master, Calico or flannel networking
On-cluster etcd with TLS, RBAC-enabled, network policy
Advanced features like worker pools, preemptible workers, and snippets customization
Ready for Ingress, Prometheus, Grafana, CSI, or other addons

Modules

Typhoon provides a Terraform Module for each supported operating system and platform.

Platform	Operating System	Terraform Module	Status
AWS	Container Linux / Flatcar Linux	aws/container-linux/kubernetes	stable
Azure	Container Linux	azure/container-linux/kubernetes	alpha
Bare-Metal	Container Linux / Flatcar Linux	bare-metal/container-linux/kubernetes	stable
Digital Ocean	Container Linux	digital-ocean/container-linux/kubernetes	beta
Google Cloud	Container Linux	google-cloud/container-linux/kubernetes	stable

A preview of Typhoon for Fedora CoreOS is available for testing.

Platform	Operating System	Terraform Module	Status
AWS	Fedora CoreOS	aws/fedora-coreos/kubernetes	preview
Bare-Metal	Fedora CoreOS	bare-metal/fedora-coreos/kubernetes	preview

Documentation

Architecture concepts and operating-systems
Tutorials for AWS, Azure, Bare-Metal, Digital Ocean, and Google-Cloud

Example

Define a Kubernetes cluster by using the Terraform module for your chosen platform and operating system. Here's a minimal example.

module "yavin" {
  source = "git::https://github.com/poseidon/typhoon//google-cloud/container-linux/kubernetes?ref=v1.17.0"

  # Google Cloud
  cluster_name  = "yavin"
  region        = "us-central1"
  dns_zone      = "example.com"
  dns_zone_name = "example-zone"

  # configuration
  ssh_authorized_key = "ssh-rsa AAAAB3Nz..."
  
  # optional
  worker_count = 2
}

# Obtain cluster kubeconfig
resource "local_file" "kubeconfig-yavin" {
  content  = module.yavin.kubeconfig-admin
  filename = "/home/user/.kube/configs/yavin-config"
}

Initialize modules, plan the changes to be made, and apply the changes.

$ terraform init
$ terraform plan
Plan: 64 to add, 0 to change, 0 to destroy.
$ terraform apply
Apply complete! Resources: 64 added, 0 changed, 0 destroyed.

In 4-8 minutes (varies by platform), the cluster will be ready. This Google Cloud example creates a yavin.example.com DNS record to resolve to a network load balancer across controller nodes.

$ export KUBECONFIG=/home/user/.kube/configs/yavin-config
$ kubectl get nodes
NAME                                       ROLES    STATUS  AGE  VERSION
yavin-controller-0.c.example-com.internal  <none>   Ready   6m   v1.17.0
yavin-worker-jrbf.c.example-com.internal   <none>   Ready   5m   v1.17.0
yavin-worker-mzdm.c.example-com.internal   <none>   Ready   5m   v1.17.0

List the pods.

$ kubectl get pods --all-namespaces
NAMESPACE     NAME                                      READY  STATUS    RESTARTS  AGE
kube-system   calico-node-1cs8z                         2/2    Running   0         6m
kube-system   calico-node-d1l5b                         2/2    Running   0         6m
kube-system   calico-node-sp9ps                         2/2    Running   0         6m
kube-system   coredns-1187388186-dkh3o                  1/1    Running   0         6m
kube-system   coredns-1187388186-zj5dl                  1/1    Running   0         6m
kube-system   kube-apiserver-controller-0               1/1    Running   0         6m
kube-system   kube-controller-manager-controller-0      1/1    Running   0         6m
kube-system   kube-proxy-117v6                          1/1    Running   0         6m
kube-system   kube-proxy-9886n                          1/1    Running   0         6m
kube-system   kube-proxy-njn47                          1/1    Running   0         6m
kube-system   kube-scheduler-controller-0               1/1    Running   0         6m

Help

Ask questions on the IRC #typhoon channel on freenode.net.

Motivation

Typhoon powers the author's cloud and colocation clusters. The project has evolved through operational experience and Kubernetes changes. Typhoon is shared under a free license to allow others to use the work freely and contribute to its upkeep.

Typhoon addresses real world needs, which you may share. It is honest about limitations or areas that aren't mature yet. It avoids buzzword bingo and hype. It does not aim to be the one-solution-fits-all distro. An ecosystem of Kubernetes distributions is healthy.

Typhoon is not a product, trial, or free-tier. It is not run by a company, does not offer support or services, and does not accept or make any money. It is not associated with any operating system or platform vendor.

Typhoon clusters will contain only free components. Cluster components will not collect data on users without their permission.

Donations

Typhoon does not accept money donations. Instead, we encourage you to donate to one of these organizations to show your appreciation.

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