Add Typhoon Azure for Container Linux

[dghubble]

Add Typhoon on Azure on Container Linux. Both Azure and Typhoon have changed since 6 months ago. Typhoon Azure supports single or multi-master self-hosted control plane. Availability set masters. Scale set workers with autoscaling. Network isolated controllers and workers. CoreDNS. RBAC always. Flannel (no Calico or Network Policy, great sadness). Load balancer with IPv4 "frontends" for apiservers (Typhoon favors 6443) and Ingress controllers. Prometheus, Grafana, Heapster, and CLUO addons. Alerts all green. Fast disks for etcd. Conformance passes. Container Linux Config snippets. Worker pools (same region only). Low priority instances for saving $$. Other Typhoon nice things.

Once v1.11.3 is released:

module "azure-ramius" {
  source = "git::https://github.com/poseidon/typhoon//azure/container-linux/kubernetes?ref=v1.11.3"

  providers = {
    azurerm  = "azurerm.default"
    local    = "local.default"
    null     = "null.default"
    template = "template.default"
    tls      = "tls.default"
  }

  # Azure
  cluster_name   = "ramius"
  region         = "centralus"
  dns_zone       = "azure.example.com"
  dns_zone_group = "example-group"

  # configuration
  ssh_authorized_key = "ssh-rsa AAAAB3Nz..."
  asset_dir          = "/home/user/.secrets/clusters/ramius"

  # optional
  worker_count    = 3
  host_cidr       = "10.0.0.0/20"
}

See full tutorial in https://github.com/poseidon/typhoon/blob/master/docs/cl/azure.md

Status

Azure is alpha. Azure still has a ways to go. For production, use AWS, Google Cloud, or bare-metal which are rated stable. Check errata for known shortcomings.

I run an always-on Azure cluster alongside Typhoon AWS, bare-metal, and GCP clusters.

• Performance - https://github.com/poseidon/typhoon/blob/master/docs/topics/performance.md
• Ingress - https://github.com/poseidon/typhoon/blob/master/docs/addons/ingress.md
• Worker pools - https://github.com/poseidon/typhoon/blob/master/docs/advanced/worker-pools.md

Also, special thanks to @justaugustus who wrote an early variant back in January.