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typhoon/CHANGES.md

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Typhoon

Notable changes between versions.

Latest

  • Kubernetes v1.9.6
  • Update Calico from v3.0.3 to v3.0.4

v1.9.5

  • Kubernetes v1.9.5
  • Introduce Container Linux Config snippets on cloud platforms (#145)
    • Validate and additively merge custom Container Linux Configs during terraform plan
    • Define files, systemd units, dropins, networkd configs, mounts, users, and more
    • Require updating terraform-provider-ct plugin from v0.2.0 to v0.2.1
  • Add node-role.kubernetes.io/controller="true" node label to controllers (#160)

AWS

  • Require updating terraform-provider-ct plugin from v0.2.0 to v0.2.1 (action required!)

Digital Ocean

  • Require updating terraform-provider-ct plugin from v0.2.0 to v0.2.1 (action required!)

Google Cloud

  • Require updating terraform-provider-ct plugin from v0.2.0 to v0.2.1 (action required!)
  • Relax os_image to optional. Default to "coreos-stable".

Addons

  • Update nginx-ingress from 0.11.0 to 0.12.0
  • Update Prometheus from 2.2.0 to 2.2.1

v1.9.4

  • Kubernetes v1.9.4
  • Introduce worker pools for AWS and Google Cloud for joining heterogeneous workers to existing clusters.
  • Use new Network Load Balancers and cross zone load balancing on AWS
  • Allow flexvolume plugins to be used on any Typhoon cluster (not just bare-metal)
  • Upgrade etcd from v3.2.15 to v3.3.2
  • Update Calico from v3.0.2 to v3.0.3
  • Use kubernetes-incubator/bootkube v0.10.0
  • Recommend updating terraform-provider-ct plugin from v0.2.0 to v0.2.1 (action recommended)

AWS

  • Promote AWS platform to stable
  • Allow groups of workers to be defined and joined to a cluster (i.e. worker pools) (#150)
  • Replace the apiserver elastic load balancer with a network load balancer (#136)
  • Replace the Ingress elastic load balancer with a network load balancer (#141)
    • AWS NLBs can handle millions of RPS with high throughput and low latency.
    • Require terraform-provider-aws 1.7.0 or higher
  • Enable NLB cross-zone load balancing (#159)
    • Requests are automatically evenly distributed to targets regardless of AZ
    • Require terraform-provider-aws 1.11.0 or higher
  • Add kubelet --volume-plugin-dir flag to allow flexvolume plugins (#142)
  • Fix controller and worker launch configs to ignore AMI changes (#126, #158)

Digital Ocean

  • Add kubelet --volume-plugin-dir flag to allow flexvolume plugins (#142)
  • Fix to pass ssh_fingerprints as a list to droplets (#143)

Google Cloud

  • Allow groups of workers to be defined and joined to a cluster (i.e. worker pools) (#148)
  • Add kubelet --volume-plugin-dir flag to allow flexvolume plugins (#142)
  • Add kubeconfig variable to controllers and workers submodules (#147)
  • Remove kubeconfig_* variables from controllers and workers submodules (#147)
  • Allow initial experimentation with accelerators (i.e. GPUs) on workers (#161) (unofficial)
    • Require terraform-provider-google v1.6.0

Addons

  • Update Prometheus from 2.1.0 to 2.2.0 (#153)
    • Scrape Prometheus itself to enable alerts about Prometheus itself
    • Adjust KubeletDown rule to fire when 10% of kubelets are down
  • Update heapster from v1.5.0 to v1.5.1 (#131)
    • Use separate service account
  • Update nginx-ingress from 0.10.2 to 0.11.0

v1.9.3

  • Kubernetes v1.9.3
  • Network improvements and fixes (#104)
    • Switch from Calico v2.6.6 to v3.0.2
    • Add Calico GlobalNetworkSet CRD
    • Update flannel from v0.9.0 to v0.10.0
    • Use separate service account for flannel
  • Update etcd from v3.2.14 to v3.2.15

Digital Ocean

  • Use new Droplet types which offer more CPU/memory, at lower cost. (#105)
    • A small Digital Ocean cluster costs less than $25 a month!

Addons

  • Update Prometheus from v2.0.0 to v2.1.0 (#113)
    • Improve alerting rules
    • Relabel discovered kubelet, endpoint, service, and apiserver scrapes
    • Use separate service accounts
    • Update node-exporter and kube-state-metrics
  • Include Grafana dashboards for Kubernetes admins (#113)
    • Add grafana-watcher to load bundled upstream dashboards
  • Update nginx-ingress from 0.9.0 to 0.10.2
  • Update CLUO from v0.5.0 to v0.6.0
  • Switch manifests to use apps/v1 Deployments and Daemonsets (#120)
  • Remove Kubernetes Dashboard manifests (#121)

v1.9.2

  • Kubernetes v1.9.2
  • Add Terraform v0.11.x support
    • Add explicit "providers" section to modules for Terraform v0.11.x
    • Retain support for Terraform v0.10.4+
  • Add migration guide from Terraform v0.10.x to v0.11.x (action required!)
  • Update etcd from 3.2.13 to 3.2.14
  • Update calico from 2.6.5 to 2.6.6
  • Update kube-dns from v1.14.7 to v1.14.8
  • Use separate service account for kube-dns
  • Use kubernetes-incubator/bootkube v0.10.0

Bare-Metal

  • Use per-node Container Linux install profiles (#97)
    • Allow Container Linux channel/version to be chosen per-cluster
    • Fix issue where cluster deletion could require terraform apply multiple times

Digital Ocean

  • Relax digitalocean provider version constraint
  • Fix bug with terraform plan always showing a firewall diff to be applied (#3)

Addons

  • Update CLUO to v0.5.0 to fix compatibility with Kubernetes 1.9 (important)
    • Earlier versions can't roll out Container Linux updates on Kubernetes 1.9 nodes (cluo#163)
  • Update kube-state-metrics from v1.1.0 to v1.2.0
  • Fix RBAC cluster role for kube-state-metrics

v1.9.1

  • Kubernetes v1.9.1
  • Update kube-dns from 1.14.5 to v1.14.7
  • Update etcd from 3.2.0 to 3.2.13
  • Update Calico from v2.6.4 to v2.6.5
  • Enable portmap to fix hostPort with Calico
  • Use separate service account for controller-manager

v1.8.6

  • Kubernetes v1.8.6
  • Update Calico from v2.6.3 to v2.6.4

v1.8.5

  • Kubernetes v1.8.5
  • Recommend Container Linux images with Docker 17.09
    • Container Linux stable, beta, and alpha now provide Docker 17.09 (instead of 1.12)
    • Older clusters (with CLUO addon) auto-update Container Linux version to begin using Docker 17.09
  • Fix race where etcd-member.service could fail to resolve peers (#69)
  • Add optional cluster_domain_suffix variable (#74)
  • Use kubernetes-incubator/bootkube v0.9.1

Bare-Metal

  • Add kubelet --volume-plugin-dir flag to allow flexvolume providers (#61)

Addons

  • Discourage deploying the Kubernetes Dashboard (security)

v1.8.4

  • Kubernetes v1.8.4
  • Calico related bug fixes
  • Update Calico from v2.6.1 to v2.6.3
  • Update flannel from v0.9.0 to v0.9.1
  • Service accounts for kube-proxy and pod-checkpointer
  • Use kubernetes-incubator/bootkube v0.9.0

v1.8.3

  • Kubernetes v1.8.3
  • Run etcd on-host, across controllers
  • Promote AWS platform to beta
  • Use kubernetes-incubator/bootkube v0.8.2

Google Cloud

  • Add required variable region (e.g. "us-central1")
  • Reduce time to bootstrap a cluster
  • Change etcd to run on-host, across controllers (etcd-member.service)
  • Change controller instances to automatically span zones in the region
  • Change worker managed instance group to automatically span zones in the region
  • Improve internal firewall rules and use tag-based firewall policies
  • Remove support for self-hosted etcd
  • Remove the zone required variable
  • Remove the controller_preemptible optional variable

AWS

  • Promote AWS platform to beta
  • Reduce time to bootstrap a cluster
  • Change etcd to run on-host, across controllers (etcd-member.service)
  • Fix firewall rules for multi-controller kubelet scraping and node-exporter
  • Remove support for self-hosted etcd

Addons

  • Add Prometheus 2.0 addon with alerting rules
  • Add Grafana dashboard for observing metrics

v1.8.2

  • Kubernetes v1.8.2
  • Switch to using the gcr.io/google_containers/hyperkube
  • Update flannel from v0.8.0 to v0.9.0
  • Add hairpinMode to flannel CNI config
  • Add --no-negcache to kube-dns dnsmasq
  • Use kubernetes-incubator/bootkube v0.8.1

v1.8.1

  • Kubernetes v1.8.1
  • Use kubernetes-incubator/bootkube v0.8.0

Digital Ocean

  • Run etcd cluster across controller nodes (etcd-member.service)
  • Remove support for self-hosted etcd
  • Reduce time to bootstrap a cluster

v1.7.7

  • Kubernetes v1.7.7
  • Use kubernetes-incubator/bootkube v0.7.0
  • Update kube-dns to 1.14.5 to fix dnsmasq vulnerability
  • Calico v2.6.1
  • flannel-cni v0.3.0
    • Update flannel CNI config to fix hostPort

v1.7.5

  • Kubernetes v1.7.5
  • Use kubernetes-incubator/bootkube v0.6.2
  • Add AWS Terraform module (alpha)
  • Add support for Calico networking (bare-metal, Google Cloud, AWS)
  • Change networking default from "flannel" to "calico"

AWS

  • Add network_mtu to allow CNI interface MTU customization

Bare-Metal

  • Add network_mtu to allow CNI interface MTU customization
  • Remove support for experimental_self_hosted_etcd

v1.7.3

  • Kubernetes v1.7.3
  • Use kubernetes-incubator/bootkube v0.6.1

Digital Ocean

  • Add cloud firewall rules (requires Terraform v0.10)
  • Change nodes tags from strings to DO tags

v1.7.1

  • Kubernetes v1.7.1
  • Use kubernetes-incubator/bootkube v0.6.0
  • Add Bare-Metal Terraform module (stable)
  • Add Digital Ocean Terraform module (beta)

Google Cloud

  • Remove k8s_domain_name variable, cluster_name + dns_zone resolves to controllers
  • Rename dns_base_zone to dns_zone
  • Rename dns_base_zone_name to dns_zone_name

v1.6.7

  • Kubernetes v1.6.7
  • Use kubernetes-incubator/bootkube v0.5.1

v1.6.6

  • Kubernetes v1.6.6
  • Use kubernetes-incubator/bootkube v0.4.5
  • Disable locksmithd on hosts, in favor of CLUO.

v1.6.4

  • Kubernetes v1.6.4
  • Add Google Cloud Terraform module (stable)

Earlier

Earlier versions, back to v1.3.0, used different designs and mechanisms.