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 versions with Docker 17.09
  • Container Linux stable and beta now provide Docker 17.09 (instead of 1.12)
  • Older clusters (with CLUO addon) auto-update Container Linux 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
• Use kubernetes-incubator/bootkube v0.9.0
• Use separate service accounts for kube-proxy and pod-checkpointer

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
  • Fixes a memory leak in the v1.8.1 apiserver (kubernetes#53485)
• 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

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