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README.md
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README.md
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# Typhoon <img align="right" src="https://storage.googleapis.com/dghubble/spin.png">
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Typhoon is a minimal and free Kubernetes distribution.
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* Minimal, stable base Kubernetes distribution
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* Declarative infrastructure and configuration
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* Practical for small labs to medium clusters
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* 100% [free](https://www.debian.org/intro/free) components (both freedom and zero cost)
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* Respect for privacy by requiring analytics be opt-in
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## Status
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Typhoon is [dghubble](https://twitter.com/dghubble)'s personal Kubernetes distribution. It powers his cloud and colocation clusters. While functional, it is not yet suited for the public.
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* [Free](#social-contract) (freedom and cost) and privacy-respecting
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* Practical for labs, datacenters, and clouds
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## Features
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* Kubernetes v1.7.3 with self-hosted control plane via [kubernetes-incubator/bootkube](https://github.com/kubernetes-incubator/bootkube)
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* Secure etcd with generated TLS certs, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled, generated admin kubeconfig
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* Multi-master, workload isolation
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* Ingress-ready (perhaps include by default)
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* Works with your existing Terraform infrastructure and secret management
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* Kubernetes v1.7.3 (upstream, via [kubernetes-incubator/bootkube](https://github.com/kubernetes-incubator/bootkube))
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* Self-hosted control plane, single or multi master, workloads isolated to workers
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* On-cluster etcd with TLS, [RBAC](https://kubernetes.io/docs/admin/authorization/rbac/)-enabled
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* Ready for Ingress, Metrics, Dashboards, and other optional [addons](docs/addons.md)
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## Modules
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| Platform | Operating System | Terraform Module |
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|---------------|------------------|------------------|
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| Bare-Metal | Container Linux | bare-metal/container-linux/kubernetes |
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| Google Cloud | Container Linux | google-cloud/container-linux/kubernetes |
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| Digital Ocean | Container Linux | digital-ocean/container-linux/kubernetes |
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| Bare-Metal | Container Linux | [bare-metal/container-linux/kubernetes](bare-metal/container-linux/kubernetes) |
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| Digital Ocean | Container Linux | [digital-ocean/container-linux/kubernetes](digital-ocean/container-linux/kubernetes) |
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| Google Cloud | Container Linux | [google-cloud/container-linux/kubernetes](google-cloud/container-linux/kubernetes) |
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## Customization
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## Docs
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To customize clusters in ways that aren't supported by input variables, fork the repo and make changes to the Terraform module. Stay tuned for improvements to this strategy since its beneficial to stay close to this upstream.
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* [https://typhoon.psdn.io](https://typhoon.psdn.io)
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* [Getting Started](https://typhoon.psdn.io/getting-started/)
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* [Bare-Metal](https://typhoon.psdn.io/bare-metal/)
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* [Digital Ocean](https://typhoon.psdn.io/digital-ocean/)
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* [Google-Cloud](https://typhoon.psdn.io/google-cloud/)
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To customize lower-level Kubernetes control plane bootstrapping, see the [poseidon/bootkube-terraform](https://github.com/poseidon/bootkube-terraform) Terraform module.
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## Example
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## Social Contract
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Define a Kubernetes cluster by using the Terraform module for your chosen platform and operating system. Here's a minimal example:
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*A formal social contract is being drafted, inspired by the Debian [Social Contract](https://www.debian.org/social_contract).*
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```tf
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module "yavin-cluster" {
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source = "git::https://github.com/poseidon/typhoon//google-cloud/container-linux/kubernetes"
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For now, know that `typhoon` is not a product, trial, or free-tier. It is not run by a company, it does not offer support or services, and it does not accept or make any money. It is not associated with any operating system or cloud platform vendors.
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# Google Cloud
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zone = "us-central1-c"
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dns_zone = "example.com"
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dns_zone_name = "example-zone"
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os_image = "coreos-stable-1409-7-0-v20170719"
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# Cluster
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cluster_name = "yavin"
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controller_count = 1
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worker_count = 3
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ssh_authorized_key = "${var.ssh_authorized_key}"
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Disclosure: The author works for CoreOS, but that work is kept as separate as possible. Support for Fedora is planned to ensure no one distro is favored and because the author wants it.
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# output assets dir
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asset_dir = "/home/user/.secrets/clusters/yavin"
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}
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```
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Fetch modules, plan the changes to be made, and apply the changes.
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```sh
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$ terraform get --update
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$ terraform plan
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Plan: 37 to add, 0 to change, 0 to destroy.
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$ terraform apply
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Apply complete! Resources: 37 added, 0 changed, 0 destroyed.
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```
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In 5-10 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.
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```sh
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$ KUBECONFIG=/home/user/.secrets/clusters/yavin/auth/kubeconfig
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$ kubectl get nodes
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NAME STATUS AGE VERSION
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yavin-controller-t6nx.c.example-com.internal Ready 3m v1.7.3+coreos.0
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yavin-worker-gvhs.c.example-com.internal Ready 3m v1.7.3+coreos.0
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yavin-worker-m8pl.c.example-com.internal Ready 3m v1.7.3+coreos.0
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yavin-worker-wsg7.c.example-com.internal Ready 3m v1.7.3+coreos.0
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```
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```sh
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$ kubectl get pods
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NAME READY STATUS RESTARTS AGE
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etcd-operator-3329263108-v34bb 1/1 Running 2 3m
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kube-apiserver-qgqz5 1/1 Running 1 3m
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kube-controller-manager-3271970485-1jxgj 1/1 Running 1 3m
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kube-controller-manager-3271970485-k57nb 1/1 Running 1 3m
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kube-dns-1187388186-wz3c1 3/3 Running 0 3m
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kube-etcd-0000 1/1 Running 1 3m
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kube-etcd-network-checkpointer-3bv09 1/1 Running 1 3m
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kube-flannel-8g1l1 2/2 Running 1 3m
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kube-flannel-bndl8 2/2 Running 1 3m
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kube-flannel-hvm8l 2/2 Running 1 3m
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kube-flannel-tfgj0 2/2 Running 1 3m
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kube-proxy-8bbkk 1/1 Running 0 3m
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kube-proxy-gwv6m 1/1 Running 0 3m
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kube-proxy-h9hnm 1/1 Running 0 3m
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kube-proxy-v9mlp 1/1 Running 1 3m
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kube-scheduler-3895335239-0fglg 1/1 Running 1 3m
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kube-scheduler-3895335239-dpd66 1/1 Running 1 3m
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pod-checkpointer-v2zmz 1/1 Running 1 3m
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```
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## Non-Goals
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* In-place Kubernetes upgrades (instead, deploy blue/green clusters and failover)
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Typhoon is strict about minimalism, maturity, and scope. These are not in scope:
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* In-place Kubernetes Upgrades
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* Adding every possible option
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* Openstack or Mesos platforms
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## Background
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Typhoon powers the original author's cloud and colocation clusters. The project has been developed through operational experience and Kubernetes evolutions. In 2017, Typhoon was shared under a free license to allow others to use the work freely and contribute to its upkeep.
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Typhoon clusters address real world needs, which you may share. We'll be honest about any limitations or areas that haven't been explored yet. We'll steer clear of buzzword bingo and hype. If your needs turn out to be different, we'll wish you the best of luck with another project.
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## Social Contract
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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 operating system or platform vendors.
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Typhoon clusters will contain only [free](https://www.debian.org/intro/free) components. Cluster components will not collect data on users without their permission.
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*Disclosure: The author works for CoreOS and previously wrote Matchbox and early Tectonic for bare-metal and AWS.*
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