Commit Graph

226 Commits

Author SHA1 Message Date
Dalton Hubble 2227f2cc62 Update Kubernetes from v1.15.1 to v1.15.2
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#v1152
2019-08-05 08:48:57 -07:00
Dalton Hubble dcd6733649 Update Calico from v3.8.0 to v3.8.1
* https://docs.projectcalico.org/v3.8/release-notes/
2019-07-27 15:31:13 -07:00
Dalton Hubble 56d0b9eae4 Avoid creating extraneous GCE controller instance groups
* Intended as part of #504 improvement
* Single controller clusters only require one controller
instance group (previously created zone-many)
* Multi-controller clusters must "wrap" controllers over
zonal heterogeneous instance groups. For example, 5
controllers over 3 zones (no change)
2019-07-20 16:58:45 -07:00
Dalton Hubble e0c7676a15 Update Kubernetes from v1.15.0 to v1.15.1
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#downloads-for-v1151
2019-07-19 01:21:08 -07:00
Dalton Hubble dfa6bcfecf Relax terraform-provider-ct version constraint
* Allow updating terraform-provider-ct to any release
beyond v0.3.2, but below v1.0. This relaxes the prior
constraint that allowed only v0.3.y provider versions
2019-07-16 22:07:37 -07:00
Dalton Hubble 9e91d7f011 Upgrade Calico from v3.7.4 to v3.8.0
* Enable CNI bandwidth plugin for traffic shaping
* https://kubernetes.io/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins/#support-traffic-shaping
2019-07-11 21:01:41 -07:00
Dalton Hubble 69d064bfdf Run kube-apiserver with lower privilege user (nobody)
* Run kube-apiserver as a non-root user (nobody). User
no longer needs to bind low number ports.
* On most platforms, the kube-apiserver load balancer listens
on 6443 and fronts controllers with kube-apiserver pods using
port 6443. Google Cloud TCP proxy load balancers cannot listen
on 6443. However, GCP's load balancer can be made to listen on
443, while kube-apiserver uses 6443 across all platforms.
2019-07-08 20:52:00 -07:00
Dalton Hubble 7a69bae75e Raise GCP network deletion timeout from 4m to 6m
* Fix a GCP errata item https://github.com/poseidon/typhoon/wiki/Errata
* Removal of a Google Cloud cluster often required 2 runs of
`terraform apply` because network resource deletes timeout
after 4m. Raise the network deletion timeout to 6m to
ensure apply only needs to be run once to remove a cluster
2019-07-06 13:15:33 -07:00
Dalton Hubble 3fcb04f68c Improve apiserver backend service zone spanning
* google_compute_backend_services use nested blocks to define
backends (instance groups heterogeneous controllers)
* Use Terraform v0.12.x dynamic blocks so the apiserver backend
service can refer to (up to zone-many) controller instance groups
* Previously, with Terraform v0.11.x, the apiserver backend service
had to list a fixed set of backends to span controller nodes across
zones in multi-controller setups. 3 backends were used because each
GCP region offered at least 3 zones. Single-controller clusters had
the cosmetic ugliness of unused instance groups
* Allow controllers to span more than 3 zones if avilable in a
region (e.g. currently only us-central1, with 4 zones)

Related:

* https://www.terraform.io/docs/providers/google/r/compute_backend_service.html
* https://www.terraform.io/docs/configuration/expressions.html#dynamic-blocks
2019-07-05 19:46:26 -07:00
Dalton Hubble 8d373b5850 Update Calico from v3.7.3 to v3.7.4
* https://docs.projectcalico.org/v3.7/release-notes/
2019-07-02 20:18:02 -07:00
Dalton Hubble 408e60075a Update Kubernetes from v1.14.3 to v1.15.0
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.15.md#v1150
* Remove docs referring to possible v1.14.4 release
2019-06-23 13:12:18 -07:00
Dalton Hubble 21fb632e90 Update Calico from v3.7.2 to v3.7.3
* https://docs.projectcalico.org/v3.7/release-notes/
2019-06-13 23:54:20 -07:00
Dalton Hubble d6d9e6c4b9 Migrate Google Cloud module Terraform v0.11 to v0.12
* Replace v0.11 bracket type hints with Terraform v0.12 list expressions
* Use expression syntax instead of interpolated strings, where suggested
* Update Google Cloud tutorial and worker pools documentation
* Define Terraform and plugin version requirements in versions.tf
  * Require google ~> 2.5 to support Terraform v0.12
  * Require ct ~> 0.3.2 to support Terraform v0.12
2019-06-06 09:48:56 -07:00
Dalton Hubble 0ccb2217b5 Update Kubernetes from v1.14.2 to v1.14.3
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.14.md#v1143
2019-05-31 01:08:32 -07:00
Dalton Hubble c565f9fd47 Rename worker pool modules' count variable to worker_count
* This change affects users who use worker pools on AWS, GCP, or
Azure with a Container Linux derivative
* Rename worker pool modules' `count` variable to `worker_count`,
because `count` will be a reserved variable name in Terraform v0.12
2019-05-27 16:40:00 -07:00
Dalton Hubble 2a71cba0e3 Update CoreDNS from v1.3.1 to v1.5.0
* Add `ready` plugin to improve readinessProbe
* https://coredns.io/2019/04/06/coredns-1.5.0-release/
2019-05-27 00:11:52 -07:00
Dalton Hubble 6e4cf65c4c Fix terraform-render-bootkube to remove trailing slash
* Fix to remove a trailing slash that was erroneously introduced
in the scripting that updated from v1.14.1 to v1.14.2
* Workaround before this fix was to re-run `terraform init`
2019-05-22 18:29:11 +02:00
Dalton Hubble da97bd4f12 Update Kubernetes from v1.14.1 to v1.14.2
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.14.md#v1142
2019-05-17 13:09:15 +02:00
Dalton Hubble f62286b677 Update Calico from v3.7.0 to v3.7.2
* https://docs.projectcalico.org/v3.7/release-notes/
2019-05-17 12:29:46 +02:00
Dalton Hubble af18296bc5 Change flannel port from 8472 to 4789
* Change flannel port from the kernel default 8472 to the
IANA assigned VXLAN port 4789
* Update firewall rules or security groups for VXLAN
* Why now? Calico now offers its own VXLAN backend so
standardizing on the IANA port will simplify config
* https://github.com/coreos/flannel/blob/master/Documentation/backends.md#vxlan
2019-05-06 21:58:10 -07:00
Dalton Hubble 09e0230111 Upgrade Calico from v3.6.1 to v3.7.0
* https://docs.projectcalico.org/v3.7/release-notes/
* https://github.com/poseidon/terraform-render-bootkube/pull/131
2019-05-06 00:44:15 -07:00
Dalton Hubble feb6192aac Update etcd from v3.3.12 to v3.3.13 on Container Linux
* Skip updating etcd for Fedora Atomic clusters, now that
Fedora Atomic has been deprecated
2019-05-04 12:55:42 -07:00
Jordan Pittier ecbbdd905e Use ./ prefix for inner/local worker pool modules
* Terraform v0.11 encouraged use of a "./" prefix for local module references
and Terraform v0.12 will require it
* https://www.terraform.io/docs/modules/sources.html#local-paths

Related: https://github.com/hashicorp/terraform/issues/19745
2019-05-04 12:27:22 -07:00
JordanP 8da17fb7a2 Fix "google_compute_target_pool.workers: Cannot determine region"
If no region is set at the Google provider level, Terraform fails to
create the google_compute_target_pool.workers resource and complains
with "Cannot determine region: set in this resource, or set provider-level 'region' or 'zone'."

This commit fixes the issue by explicitly setting the region for the
google_compute_target_pool.workers resource.
2019-04-13 11:53:56 -07:00
Dalton Hubble 452253081b Update Kubernetes from v1.14.0 to v1.14.1
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.14.md#changelog-since-v1140
2019-04-09 21:47:23 -07:00
Dalton Hubble be29f52039 Add enable_aggregation option (defaults to false)
* Add an `enable_aggregation` variable to enable the kube-apiserver
aggregation layer for adding extension apiservers to clusters
* Aggregation is **disabled** by default. Typhoon recommends you not
enable aggregation. Consider whether less invasive ways to achieve your
goals are possible and whether those goals are well-founded
* Enabling aggregation and extension apiservers increases the attack
surface of a cluster and makes extensions a part of the control plane.
Admins must scrutinize and trust any extension apiserver used.
* Passing a v1.14 CNCF conformance test requires aggregation be enabled.
Having an option for aggregation keeps compliance, but retains the
stricter security posture on default clusters
2019-04-07 12:00:38 -07:00
Dalton Hubble 5271e410eb Update Kubernetes from v1.13.5 to v1.14.0
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.14.md#v1140
2019-04-07 00:15:59 -07:00
Dalton Hubble aaa8e0261a Add Google Cloud worker instances to a target pool
* Background: A managed instance group of workers is used in backend
services for global load balancing (HTTP/HTTPS Ingress) and output
for custom global load balancing use cases
* Add worker instances to a target pool load balancing TCP/UDP
applications (NodePort or proxied). Output as `worker_target_pool`
* Health check for workers with a healthy Ingress controller. Forward
rules (regional) to target pools don't support different external and
internal ports so choosing nodes with Ingress allows proxying as a
workaround
* A target pool is a logical grouping only. It doesn't add costs to
clusters or worker pools
2019-04-01 21:03:48 -07:00
Dalton Hubble b3ec5f73e3 Update Calico from v3.6.0 to v3.6.1
* https://docs.projectcalico.org/v3.6/release-notes/
2019-03-31 17:43:43 -07:00
Dalton Hubble 46196af500 Remove Haswell minimum CPU platform requirement
* Google Cloud API implements `min_cpu_platform` to mean
"use exactly this CPU"
* Fix error creating clusters in newer regions lacking Haswell
platform (e.g. europe-west2) (#438)
* Reverts #405, added in v1.13.4
* Original goal of ignoring old Ivy/Sandy bridge CPUs in older regions
will be achieved shortly anyway. Google Cloud is deprecating those CPUs
in April 2019
* https://cloud.google.com/compute/docs/instances/specify-min-cpu-platform#how_selecting_a_minimum_cpu_platform_works
2019-03-27 19:51:32 -07:00
Dalton Hubble 4fea526ebf Update Kubernetes from v1.13.4 to v1.13.5
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.13.md#v1135
2019-03-25 21:43:47 -07:00
Dalton Hubble 1feefbe9c6 Update Calico from v3.5.2 to v3.6.0
* Add calico-ipam CRDs and RBAC permissions
* Switch IPAM from host-local to calico-ipam
  * `calico-ipam` subnets `ippools` (defaults to pod CIDR) into
`ipamblocks` (defaults to /26, but set to /24 in Typhoon)
  * `host-local` subnets the pod CIDR based on the node PodCIDR
field (set via kube-controller-manager as /24's)
* Create a custom default IPv4 IPPool to ensure the block size
is kept at /24 to allow 110 pods per node (Kubernetes default)
* Retaining host-local was slightly preferred, but Calico v3.6
is migrating all usage to calico-ipam. The codepath that skipped
calico-ipam for KDD was removed
*  https://docs.projectcalico.org/v3.6/release-notes/
2019-03-19 22:49:56 -07:00
Dalton Hubble 2019177b6b Fix implicit map assignments to be explicit
* Terraform v0.12 will require map assignments be explicit,
part of v0.12 readiness
2019-03-12 01:19:54 -07:00
Dalton Hubble deec512c14 Resolve in-addr.arpa and ip6.arpa zones with CoreDNS kubernetes plugin
* Resolve in-addr.arpa and ip6.arpa DNS PTR requests for Kubernetes
service IPs and pod IPs
* Previously, CoreDNS was configured to resolve in-addr.arpa PTR
records for service IPs (but not pod IPs)
2019-03-04 23:03:00 -08:00
Dalton Hubble f598307998 Update Kubernetes from v1.13.3 to v1.13.4
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.13.md#v1134
2019-02-28 22:47:43 -08:00
Dalton Hubble 73ae5d5649 Update Calico from v3.5.1 to v3.5.2
* https://docs.projectcalico.org/v3.5/releases/
2019-02-25 21:23:13 -08:00
Dalton Hubble 42d7222f3d Add a readiness probe to CoreDNS
* https://github.com/poseidon/terraform-render-bootkube/pull/115
2019-02-23 13:25:23 -08:00
Dalton Hubble 7f8572030d Upgrade to support terraform-provider-google v2.0+
* Support terraform-provider-google v1.19.0, v1.19.1, v1.20.0
and v2.0+ (and allow for future 2.x.y releases)
* Require terraform-provider-google v1.19.0 or newer. v1.19.0
introduced `network_interface` fields `network_ip` and `nat_ip`
to deprecate `address` and `assigned_nat_ip`. Those deprecated
fields are removed in terraform-provider-google v2.0
* https://github.com/terraform-providers/terraform-provider-google/releases/tag/v2.0.0
2019-02-20 02:33:32 -08:00
Dalton Hubble 4294bd0292 Assign Pod Priority classes to critical cluster and node components
* Assign pod priorityClassNames to critical cluster and node
components (higher is higher priority) to inform node out-of-resource
eviction order and scheduler preemption and scheduling order
* Priority Admission Controller has been enabled since Typhoon
v1.11.1
2019-02-19 22:21:39 -08:00
Dalton Hubble ba4c5de052 Set the Google Cloud minimum CPU platform to Intel Haswell
* Intel Haswell or better is available in every zone around the world
* Neither Kubernetes nor Typhoon have a particular minimum processor
family. However, a few Google Cloud zones still default to Sandy/Ivy
bridge (scheduled to shift April 2019). Price is only based on machine
type so it is beneficial to opt for the next processor family
* Intel Haswell is a suitable minimum since it still allows plenty of
liberty in choosing any region or machine type
* Likely a slight increase to preemption probability in a few zones,
but any lower probability on Sandy/Ivy bridge is due to lower
desirability as they're phased out
* https://cloud.google.com/compute/docs/regions-zones/
2019-02-18 12:55:04 -08:00
Dalton Hubble 584088397c Update etcd from v3.3.11 to v3.3.12
* https://github.com/etcd-io/etcd/releases/tag/v3.3.12
2019-02-09 11:54:54 -08:00
Dalton Hubble 0200058e0e Update Calico from v3.5.0 to v3.5.1
* Fix in confd https://github.com/projectcalico/confd/pull/205
2019-02-09 11:49:31 -08:00
Dalton Hubble ccd96c37da Update Kubernetes from v1.13.2 to v1.13.3
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.13.md#v1133
2019-02-01 23:26:13 -08:00
Dalton Hubble 244a1a601a Switch CoreDNS to use the forward plugin instead of proxy
* Use the forward plugin to forward to upstream resolvers, instead
of the proxy plugin. The forward plugin is reported to be a faster
alternative since it can re-use open sockets
* https://coredns.io/explugins/forward/
* https://coredns.io/plugins/proxy/
* https://github.com/kubernetes/kubernetes/issues/73254
2019-01-30 22:25:23 -08:00
Dalton Hubble 1ab06f69d7 Update flannel from v0.10.0 to v0.11.0
* https://github.com/coreos/flannel/releases/tag/v0.11.0
2019-01-29 21:51:25 -08:00
Dalton Hubble e9659a8539 Update Calico from v3.4.0 to v3.5.0
* https://docs.projectcalico.org/v3.5/releases/
2019-01-27 16:34:30 -08:00
Dalton Hubble f4d3508578 Update CoreDNS from v1.3.0 to v1.3.1
* https://coredns.io/2019/01/13/coredns-1.3.1-release/
2019-01-15 22:50:25 -08:00
Dalton Hubble 7eafa59d8f Fix instance shutdown automatic worker deletion on clouds
* Fix a regression caused by lowering the Kubelet TLS client
certificate to system:nodes group (#100) since dropping
cluster-admin dropped the Kubelet's ability to delete nodes.
* On clouds where workers can scale down (manual terraform apply,
AWS spot termination, Azure low priority deletion), worker shutdown
runs the delete-node.service to remove a node to prevent NotReady
nodes from accumulating
* Allow Kubelets to delete cluster nodes via system:nodes group. Kubelets
acting with system:node and kubelet-delete ClusterRoles is still an
improvement over acting as cluster-admin
2019-01-14 23:27:48 -08:00
Dalton Hubble b74cc8afd2 Update etcd from v3.3.10 to v3.3.11
* https://github.com/etcd-io/etcd/releases/tag/v3.3.11
2019-01-12 14:17:25 -08:00
Dalton Hubble 4d32b79c6f Update Kubernetes from v1.13.1 to v1.13.2
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.13.md#v1132
2019-01-12 00:00:53 -08:00