Commit Graph

213 Commits

Author SHA1 Message Date
Dalton Hubble 56e9a82984 Add flannel resource request and mount only /run/flannel 2018-11-11 20:35:21 -08:00
Dalton Hubble e95b856a22 Enable CoreDNS loop and loadbalance plugins
* loop sends an initial query to detect infinite forwarding
loops in configured upstream DNS servers and fast exit with
an error (its a fatal misconfiguration on the network that
will otherwise cause resolvers to consume memory/CPU until
crashing, masking the problem)
* https://github.com/coredns/coredns/tree/master/plugin/loop
* loadbalance randomizes the ordering of A, AAAA, and MX records
in responses to provide round-robin load balancing (as usual,
clients may still cache responses though)
* https://github.com/coredns/coredns/tree/master/plugin/loadbalance
2018-11-10 17:36:56 -08:00
Dalton Hubble 2b3f61d1bb Update Calico from v3.3.0 to v3.3.1
* Structure Calico and flannel manifests
* Rename kube-flannel mentions to just flannel
2018-11-10 13:37:12 -08:00
Dalton Hubble 8fd2978c31 Update bootkube image version from v0.13.0 to v0.14.0
* https://github.com/kubernetes-incubator/bootkube/releases/tag/v0.14.0
2018-11-06 23:35:11 -08:00
Dalton Hubble 721c847943 Set kube-apiserver kubelet preferred address types
* Prefer InternalIP and ExternalIP over the node's hostname,
to match upstream behavior and kubeadm
* Previously, hostname-override was used to set node names
to internal IP's to work around some cloud providers not
resolving hostnames for instances (e.g. DO droplets)
2018-11-03 22:31:55 -07:00
Dalton Hubble 0e71f7e565 Ignore controller user_data changes to allow plugin updates
* Updating the `terraform-provider-ct` plugin is known to produce
a `user_data` diff in all pre-existing clusters. Applying the
diff to pre-existing cluster destroys controller nodes
* Ignore changes to controller `user_data`. Once all managed
clusters use a release containing this change, it is possible
to update the `terraform-provider-ct` plugin (worker `user_data`
will still be modified)
* Changing the module `ref` for an existing cluster and
re-applying is still NOT supported (although this PR
would protect controllers from being destroyed)
2018-10-28 16:48:12 -07:00
Dalton Hubble 9b405a19b2 Fix minor naming inconsistencies in Ignition and CLC data 2018-10-27 16:24:59 -07:00
Tamer Fahmy bfa1a679eb Name AWS and DigitalOcean Ignition data sources consistently 2018-10-27 16:14:44 -07:00
Dalton Hubble f1da0731d8 Update Kubernetes from v1.12.1 to v1.12.2
* Update CoreDNS from v1.2.2 to v1.2.4
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.12.md#v1122
* https://coredns.io/2018/10/17/coredns-1.2.4-release/
* https://coredns.io/2018/10/16/coredns-1.2.3-release/
2018-10-27 15:47:57 -07:00
Dalton Hubble d641a058fe Update Calico from v3.2.3 to v3.3.0
* https://docs.projectcalico.org/v3.3/releases/
2018-10-23 20:30:30 -07:00
Dalton Hubble 99a6d5478b Disable Kubelet read-only port 10255
* We can finally disable the Kubelet read-only port 10255!
* Journey: https://github.com/poseidon/typhoon/issues/322#issuecomment-431073073
2018-10-18 21:14:14 -07:00
Dalton Hubble d55bfd5589 Fix CoreDNS AntiAffinity spec to prefer spreading replicas
* Pods were still being scheduled at random due to a typo
2018-10-17 22:19:57 -07:00
Robert Fairburn 0be4673e44 Add disk_iops variable for AWS
* Setting disk_iops is required for disk_type io1
* https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html#EBSVolumeTypes
2018-10-17 22:18:54 -07:00
Dalton Hubble 9b6113a058 Update Kubernetes from v1.11.3 to v1.12.1
* Mount an empty dir for the controller-manager to work around
https://github.com/kubernetes/kubernetes/issues/68973
* Update coreos/pod-checkpointer to strip affinity from
checkpointed pod manifests. Kubernetes v1.12.0-rc.1 introduced
a default affinity that appears on checkpointed manifests; but
it prevented scheduling and checkpointed pods should not have an
affinity, they're run directly by the Kubelet on the local node
* https://github.com/kubernetes-incubator/bootkube/issues/1001
* https://github.com/kubernetes/kubernetes/pull/68173
2018-10-16 20:28:13 -07:00
Dalton Hubble 5eb4078d68 Add docker/default seccomp to control plane and addons
* Annotate pods, deployments, and daemonsets to start containers
with the Docker runtime's default seccomp profile
* Overrides Kubernetes default behavior which started containers
with seccomp=unconfined
* https://docs.docker.com/engine/security/seccomp/#pass-a-profile-for-a-container
2018-10-16 20:07:29 -07:00
Dalton Hubble 55bb4dfba6 Raise CoreDNS replica count to 2 or more
* Run at least two replicas of CoreDNS to better support
rolling updates (previously, kube-dns had a pod nanny)
* On multi-master clusters, set the CoreDNS replica count
to match the number of masters (e.g. a 3-master cluster
previously used replicas:1, now replicas:3)
* Add AntiAffinity preferred rule to favor distributing
CoreDNS pods across controller nodes nodes
2018-10-13 20:31:29 -07:00
Dalton Hubble 43fe78a2cc Raise scheduler/controller-manager replicas in multi-master
* Continue to ensure scheduler and controller-manager run
at least two replicas to support performing kubectl edits
on single-master clusters (no change)
* For multi-master clusters, set scheduler / controller-manager
replica count to the number of masters (e.g. a 3-master cluster
previously used replicas:2, now replicas:3)
2018-10-13 16:16:29 -07:00
Dalton Hubble 5a283b6443 Update etcd from v3.3.9 to v3.3.10
* https://github.com/etcd-io/etcd/blob/master/CHANGELOG-3.3.md#v3310-2018-10-10
2018-10-13 13:14:37 -07:00
Dalton Hubble 7653e511be Update CoreDNS and Calico versions
* Update CoreDNS from 1.1.3 to 1.2.2
* Update Calico from v3.2.1 to v3.2.3
2018-10-02 16:07:48 +02:00
Dalton Hubble ad871dbfa9 Update Kubernetes from v1.11.2 to v1.11.3
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.11.md#v1113
2018-09-13 18:50:41 -07:00
Dalton Hubble 7eb09237f4 Update Calico from v3.1.3 to v3.2.1
* Add new bird and felix readiness checks
* Read MTU from ConfigMap veth_mtu
* Add RBAC read for serviceaccounts
* Remove invalid description from CRDs
2018-08-25 17:53:11 -07:00
Dalton Hubble ea365b551a Fix docs mentions of ELBs to NLBs
* Typhoon AWS clusters use an NLB rather than an ELB,
since v1.10.5
* Add a few missing links in CHANGES
2018-08-21 21:40:06 -07:00
Dalton Hubble bbf2c13eef Remove AWS security rule allowing ICMP packets to nodes
* Deny ICMP packets for consistency across Typhoon clusters on
various clouds and because there isn't much need to allow them
2018-08-21 21:16:16 -07:00
Dalton Hubble bceec9fdf5 Sort firewall / security rules and add comments
* No functional changes to network firewalls
2018-08-21 20:53:16 -07:00
Dalton Hubble f7ebdf475d Update Kubernetes from v1.11.1 to v1.11.2
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.11.md#v1112
2018-08-07 21:57:25 -07:00
Dalton Hubble edc250d62a Fix Kublet version for Fedora Atomic modules
* Release v1.11.1 erroneously left Fedora Atomic clusters using
the v1.11.0 Kubelet. The rest of the control plane ran v1.11.1
as expected
* Update Kubelet from v1.11.0 to v1.11.1 so Fedora Atomic matches
Container Linux
* Container Linux modules were not affected
2018-07-29 12:13:29 -07:00
Dalton Hubble db64ce3312 Update etcd from v3.3.8 to v3.3.9
* https://github.com/coreos/etcd/blob/master/CHANGELOG-3.3.md#v339-2018-07-24
2018-07-29 11:27:37 -07:00
Dalton Hubble 7c327b8bf4 Update from bootkube v0.12.0 to v0.13.0 2018-07-29 11:20:17 -07:00
Dalton Hubble d8d524d10b Update Kubernetes from v1.11.0 to v1.11.1
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.11.md#v1111
2018-07-20 00:41:27 -07:00
Dalton Hubble 6f958d7577 Replace kube-dns with CoreDNS
* Add system:coredns ClusterRole and binding
* Annotate CoreDNS for Prometheus metrics scraping
* Remove kube-dns deployment, service, & service account
* https://github.com/poseidon/terraform-render-bootkube/pull/71
* https://kubernetes.io/blog/2018/06/27/kubernetes-1.11-release-announcement/
2018-07-01 22:55:01 -07:00
Dalton Hubble 93de7506ef Update Fedora Atomic from 27 to 28 on AWS 2018-06-30 18:55:18 -07:00
Dalton Hubble def445a344 Update Fedora Atomic kubelet from v1.10.5 to v1.11.0 2018-06-30 16:45:42 -07:00
Dalton Hubble 8464b258d8 Update Kubernetes from v1.10.5 to v1.11.0
* Force apiserver to stop listening on 127.0.0.1:8080
* Remove deprecated Kubelet `--allow-privileged`. Defaults to
true. Use `PodSecurityPolicy` if limiting is desired
* https://github.com/kubernetes/kubernetes/releases/tag/v1.11.0
* https://github.com/poseidon/terraform-render-bootkube/pull/68
2018-06-27 22:47:35 -07:00
Dalton Hubble 855aec5af3 Clarify AWS module output names and changes 2018-06-23 15:29:13 -07:00
Dalton Hubble 0227014fa0 Fix terraform formatting 2018-06-22 00:28:36 -07:00
Dalton Hubble fb6f40051f Disable AWS detailed monitoring on worker nodes
* Basic monitoring (free) is sufficient for casual console browsing
* Detailed monitoring (paid) is not leveraged for CloudWatch anyway
* Favor Prometheus for cloud-agnostic metrics, aggregation, and alerting
2018-06-22 00:26:06 -07:00
Dalton Hubble 316f06df06 Combine NLBs to use one NLB per cluster
* Simplify clusters to come with a single NLB
* Listen for apiserver traffic on port 6443 and forward
to controllers (with healthy apiserver)
* Listen for ingress traffic on ports 80/443 and forward
to workers (with healthy ingress controller)
* Reduce cost of default clusters by 1 NLB ($18.14/month)
* Keep using CNAME records to the `ingress_dns_name` NLB and
the nginx-ingress addon for Ingress (up to a few million RPS)
* Users with heavy traffic (many million RPS) can create their
own separate NLB(s) for Ingress and use the new output worker
target groups
* Fix issue where additional worker pools come with an
extraneous network load balancer
2018-06-21 23:46:57 -07:00
Dalton Hubble f4d3059b00 Update Kubernetes from v1.10.4 to v1.10.5
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.10.md#v1105
2018-06-21 22:51:39 -07:00
Dalton Hubble 6c5a1964aa Change kube-apiserver port from 443 to 6443
* Adjust firewall rules, security groups, cloud load balancers,
and generated kubeconfig's
* Facilitates some future simplifications and cost reductions
* Bare-Metal users who exposed kube-apiserver on a WAN via their
router or load balancer will need to adjust its configuration.
This is uncommon, most apiserver are on LAN and/or behind VPN
so no routing infrastructure is configured with the port number
2018-06-19 23:48:51 -07:00
Dalton Hubble 6e64634748 Update etcd from v3.3.7 to v3.3.8
* https://github.com/coreos/etcd/releases/tag/v3.3.8
2018-06-19 21:56:21 -07:00
Dalton Hubble 51906bf398 Update etcd from v3.3.6 to v3.3.7 2018-06-14 22:46:16 -07:00
Dalton Hubble 79260c48f6 Update Kubernetes from v1.10.3 to v1.10.4 2018-06-06 23:23:11 -07:00
Dalton Hubble 589c3569b7 Update etcd from v3.3.5 to v3.3.6
* https://github.com/coreos/etcd/releases/tag/v3.3.6
2018-06-06 23:19:30 -07:00
Dalton Hubble 6e968cd152 Update Calico from v3.1.2 to v3.1.3
* https://github.com/projectcalico/calico/releases/tag/v3.1.3
* https://github.com/projectcalico/cni-plugin/releases/tag/v3.1.3
2018-05-30 21:32:12 -07:00
Ben Drucker 6a581ab577 Render etcd_initial_cluster using a template_file 2018-05-30 21:14:49 -07:00
Dalton Hubble 4ea1fde9c5 Update Kubernetes from v1.10.2 to v1.10.3
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.10.md#v1103
* Update Calico from v3.1.1 to v3.1.2
2018-05-21 21:38:43 -07:00
William Zhang 2ae126bf68 Fix README link to tutorial 2018-05-19 13:10:22 -07:00
Dalton Hubble 983489bb52 Re-run terraform fmt for formatting 2018-05-14 23:38:16 -07:00
Dalton Hubble c2b719dc75 Configure Prometheus to scrape Kubelets directly
* Use Kubelet bearer token authn/authz to scrape metrics
* Drop RBAC permission from nodes/proxy to nodes/metrics
* Stop proxying kubelet scrapes through the apiserver, since
this required higher privilege (nodes/proxy) and can add
load to the apiserver on large clusters
2018-05-14 23:06:50 -07:00
Dalton Hubble 37981f9fb1 Allow bearer token authn/authz to the Kubelet
* Require Webhook authorization to the Kubelet
* Switch apiserver X509 client cert org to systems:masters
to grant the apiserver admin and satisfy the authorization
requirement. kubectl commands like logs or exec that have
the apiserver make requests of a kubelet continue to work
as before
* https://kubernetes.io/docs/admin/kubelet-authentication-authorization/
* https://github.com/poseidon/typhoon/issues/215
2018-05-13 23:20:42 -07:00
Dalton Hubble 5eb11f5104 Allow Flatcar Linux os_image on AWS, rename os_channel
* Replace os_channel variable with os_image to align naming
across clouds. Users who set this option to stable, beta, or
alpha should now set os_image to coreos-stable, coreos-beta,
or coreos-alpha.
* Default os_image to coreos-stable. This continues to use
the most recent image from the stable channel as always.
* Allow Container Linux derivative Flatcar Linux by setting
os_image to `flatcar-stable`, `flatcar-beta`, `flatcar-alpha`
2018-05-12 11:41:58 -07:00
Dalton Hubble f2ee75ac98 Require Terraform v0.11.x, drop v0.10.x support
* Raise minimum Terraform version to v0.11.0
* Terraform v0.11.x has been supported since Typhoon v1.9.2
and Terraform v0.10.x was last released in Nov 2017. I'd like
to stop worrying about v0.10.x and remove migration docs as
a later followup
* Migration docs docs/topics/maintenance.md#terraform-v011x
2018-05-10 02:20:46 -07:00
Dalton Hubble 8b8e364915 Update etcd from v3.3.4 to v3.3.5
* https://github.com/coreos/etcd/releases/tag/v3.3.5
2018-05-10 02:12:53 -07:00
Michael Holt a5916da0e2 Update min AWS provider from v1.11 to v1.13 2018-05-02 15:16:03 -07:00
Dalton Hubble cc29530ba0 Allow preemptible workers on AWS via spot instances
* Add `worker_price` to allow worker spot instances. Defaults
to empty string for the worker autoscaling group to use regular
on-demand instances.
* Add `spot_price` to internal `workers` module for spot worker
pools
* Note: Unlike GCP `preemptible` workers, spot instances require
you to pick a bid price.
2018-04-29 13:31:17 -07:00
Dalton Hubble e889430926 Update kube-dns from v1.14.9 to v1.14.10
* https://github.com/kubernetes/kubernetes/pull/62676
2018-04-28 00:43:09 -07:00
Dalton Hubble 32ddfa94e1 Update Kubernetes from v1.10.1 to v1.10.2
* https://github.com/kubernetes/kubernetes/releases/tag/v1.10.2
2018-04-28 00:27:00 -07:00
Dalton Hubble 681450aa0d Update etcd from v3.3.3 to v3.3.4
* https://github.com/coreos/etcd/releases/tag/v3.3.4
2018-04-27 23:57:26 -07:00
Dalton Hubble 567e18f015 Fix conflict between Calico and NetworkManager
* Observed frequent kube-scheduler and controller-manager
restarts with Calico as the CNI provider. Root cause was
unclear since control plane was functional and tests of
pod to pod network connectivity passed
* Root cause: Calico sets up cali* and tunl* network interfaces
for containers on hosts. NetworkManager tries to manage these
interfaces. It periodically disconnected veth pairs. Logs did
not surface this issue since its not an error per-se, just Calico
and NetworkManager dueling for control. Kubernetes correctly
restarted pods failing health checks and ensured 2 replicas were
running so the control plane functioned mostly normally. Pod to
pod connecitivity was only affected occassionally. Pain to debug.
* Solution: Configure NetworkManager to ignore the Calico ifaces
per Calico's recommendation. Cloud-init writes files after
NetworkManager starts, so a restart is required on first boot. On
subsequent boots, the file is present so no restart is needed
2018-04-25 21:45:58 -07:00
Dalton Hubble 0a7fab56e2 Load ip_vs kernel module on boot as workaround
* (containerized) kube-proxy warns that it is unable to
load the ip_vs kernel module despite having the correct
mounts. Atomic uses an xz compressed module and modprobe
in the container was not compiled with compression support
* Workaround issue for now by always loading ip_vs on-host
* https://github.com/kubernetes/kubernetes/issues/60
2018-04-25 21:45:58 -07:00
Dalton Hubble d784b0fca6 Switch to quay.io/poseidon tagged system containers 2018-04-25 18:15:18 -07:00
Dalton Hubble 7198b9016c Update Calico from v3.0.4 to v3.1.1 for Atomic 2018-04-21 18:46:56 -07:00
Dalton Hubble 233ec6dcb0 Update Fedora Atomic AMI to version 27.122
* http://www.projectatomic.io/blog/2018/04/fedora-atomic-20-apr-18/
* Atomic publishes nightly AMIs which sometimes don't boot
or have issues. Until there is a source of reliable AMIs,
pin the best known working AMI
* Rel 66a66f0d18544591ffdbf8fae9df790113c93d72
2018-04-21 18:46:56 -07:00
Dalton Hubble 9b88d4bbfd Use bootkube system container on fedora-atomic
* Use the upstream bootkube image packaged with the
required metadata to be usable as a system container
under systemd
* Run bootkube with runc so no host level components
use Docker any more. Docker is still the runtime
* Remove bootkube script and old systemd unit
2018-04-21 18:46:56 -07:00
Dalton Hubble 3dde4ba8ba Mount host's /etc/os-release in kubelet system containers
* Fix `kubectl describe node` to reflect the host's operating
system
2018-04-21 18:46:56 -07:00
Dalton Hubble e148552220 Enable kubelet allocatable enforcement and QoS cgroup hierarchy
* Change kubelet system image to use --cgroups-per-qos=true
(default) instead of false
* Change kubelet system image to use --enforce-node-allocatable=pods
instead of an empty string
2018-04-21 18:46:56 -07:00
Dalton Hubble d8d1468f03 Update kubelet system container image to mount /etc/hosts
* Fix kubelet port-forward on Google Cloud / Fedora Atomic
* Mount the host's /etc/hosts in kubelet system containers
* Problem: kubelet runc system containers on Atomic were not
mounting the host's /etc/hosts, like rkt-fly does on Container
Linux. `kubectl port-forward` calls socat with localhost. DNS
servers on AWS, DO, and in many bare-metal environments resolve
localhost to the caller as a convenience. Google Cloud notably
does not nor is it required to do so and this surfaced the
missing /etc/hosts in runc kubelet namespaces.
2018-04-21 18:46:56 -07:00
Dalton Hubble 24d230505a Add cloud-metadata.service on AWS fedora-atomic 2018-04-21 18:46:56 -07:00
Dalton Hubble b3cf9508b6 Update Fedora Atomic modules to Kubernetes v1.10.1 2018-04-21 18:46:56 -07:00
Dalton Hubble 5212684472 Temporarily pin Fedora Atomic AMI
* Atomic has published AMI images that shutdown
immediately after being powered on
2018-04-21 18:46:56 -07:00
Dalton Hubble f990473cde Update control plane manifests and add etcd metrics
* Enable etcd v3.3 metrics to expose metrics for
scraping by Prometheus
* Use k8s.gcr.io instead of gcr.io/google_containers
* Add flexvolume plugin mount to controller manager
* Update kube-dns from v1.14.8 to v1.14.9
2018-04-21 18:46:56 -07:00
Dalton Hubble 8523a086e2 Fix kubelet system container to mount CNI plugins
* Mount /opt/cni/bin in kubelet system container so
CNI plugin binaries can be found. Before, flannel
worked because the kubelet falls back to flannel
plugin baked into the hyperkube (undesired)
* Move the CNI bin install location later, since /opt
changes may be lost between ostree rebases
2018-04-21 18:46:56 -07:00
Dalton Hubble 19bc5aea9e Use kubelet system container on fedora-atomic
* Use the upstream hyperkube image packaged with the
required metadata to be usable as a system container
under systemd
* Fix port-forward since socat is included
2018-04-21 18:46:56 -07:00
Dalton Hubble 8d7cfc1a45 Use etcd system container on fedora-atomic
* Use the upstream etcd image packaged with the required
metadata to be usable as a system container (runc) under
systemd
2018-04-21 18:46:56 -07:00
Dalton Hubble 9969c357da Change AWS Fedora module to fedora-atomic 2018-04-21 18:46:56 -07:00
Dalton Hubble b80a2eb8a0 Sync fedora-cloud modules with Container Linux
* Update manifests for Kubernetes v1.10.0
* Update etcd from v3.3.2 to v3.3.3
* Add disk_type optional variable on AWS
* Remove redundant kubeconfig copy on AWS
* Distribute etcd secres only to controllers
* Organize module variables and ssh steps
2018-04-21 18:46:56 -07:00
Dalton Hubble 3610da8b71 Add fedora-cloud module for AWS 2018-04-21 18:46:56 -07:00
Dalton Hubble a54f76db2a Update Calico from v3.0.4 to v3.1.1
* https://github.com/projectcalico/calico/releases/tag/v3.1.1
* https://github.com/projectcalico/calico/releases/tag/v3.1.0
2018-04-21 18:30:36 -07:00
Dalton Hubble 23a8156bdf Fix a few typos in comments 2018-04-15 17:21:49 -07:00
Dalton Hubble 77c0a4cf2e Update Kubernetes from v1.10.0 to v1.10.1
* Use kubernetes-incubator/bootkube v0.12.0
2018-04-12 20:57:31 -07:00
Dalton Hubble 9bb3de5327 Skip creating unused dirs on worker nodes 2018-04-11 22:23:51 -07:00
Dalton Hubble 6b08bde479 Use k8s.gcr.io instead of gcr.io/google_containers
* Kubernetes recommends using the alias to fetch images
from the nearest GCR regional mirror, to abstract the use
of GCR, and to drop names containing 'google'
* https://groups.google.com/forum/#!msg/kubernetes-dev/ytjk_rNrTa0/3EFUHvovCAAJ
2018-04-08 12:57:52 -07:00
Dalton Hubble f4b2396718 Return Prometheus deployment to be a worker workload
* Expose etcd metrics to workers so Prometheus can
run on a worker, rather than a controller
* Drop temporary firewall rules allowing Prometheus
to run on a controller and scrape targes
* Related to https://github.com/poseidon/typhoon/pull/175
2018-04-08 12:20:00 -07:00
Dalton Hubble 18dbaf74ce Update kube-dns from v1.14.8 to v1.14.9
* https://github.com/kubernetes/kubernetes/pull/61908
2018-04-04 21:00:23 -07:00
Dalton Hubble ce001e9d56 Update etcd from v3.3.2 to v3.3.3
* https://github.com/coreos/etcd/releases/tag/v3.3.3
2018-04-04 20:32:24 -07:00
Dalton Hubble d770393dbc Add etcd metrics, Prometheus scrapes, and Grafana dash
* Use etcd v3.3 --listen-metrics-urls to expose only metrics
data via http://0.0.0.0:2381 on controllers
* Add Prometheus discovery for etcd peers on controller nodes
* Temporarily drop two noisy Prometheus alerts
2018-04-03 20:31:00 -07:00
Dalton Hubble 1cc043d1eb Update Kubernetes from v1.9.6 to v1.10.0 2018-03-30 22:14:07 -07:00
Dalton Hubble f8e9bfb1c0 Add disk_type variable for EBS volume type on AWS
* Change EBS volume type from `standard` ("prior generation)
 to `gp2`. Prometheus alerts are tuned for SSDs
* Other platforms have fast enough disks by default
2018-03-29 22:51:54 -07:00
Dalton Hubble 7acd4931f6 Remove redundant kubeconfig copy on AWS and GCP
* AWS and Google Cloud make use of auto-scaling groups
and managed instance groups, respectively. As such, the
kubeconfig is already held in cloud user-data
* Controller instances are provisioned with a kubeconfig
from user-data. Its redundant to use a Terraform remote
file copy step for the kubeconfig.
2018-03-26 00:01:47 -07:00
Dalton Hubble e43cf9f608 Organize and cleanup variable descriptions 2018-03-25 21:44:43 -07:00
Dalton Hubble a04ef3919a Update Kubernetes from v1.9.5 to v1.9.6 2018-03-21 20:29:52 -07:00
Dalton Hubble 758c09fa5c Update Kubernetes from v1.9.4 to v1.9.5 2018-03-19 00:25:44 -07:00
Dalton Hubble f3730b2bfa Add Container Linux Config snippets feature
* Introduce the ability to support Container Linux Config
"snippets" for controllers and workers on cloud platforms.
This allows end-users to customize hosts by providing Container
Linux configs that are additively merged into the base configs
defined by Typhoon. Config snippets are validated, merged, and
show any errors during `terraform plan`
* Example uses include adding systemd units, network configs,
mounts, files, raid arrays, or other disk provisioning features
provided by Container Linux Configs (using Ignition low-level)
* Requires terraform-provider-ct v0.2.1 plugin
2018-03-18 18:28:18 -07:00
Dalton Hubble 88aa9a46e5 Add /var/lib/calico volume mount to Calico DaemonSet 2018-03-18 16:40:38 -07:00
Dalton Hubble efa90d8b44 Add a new key=value label to controller nodes
* Add a node-role.kubernetes.io/controller="true" node label
to controllers so Prometheus service discovery can filter to
services that only run on controllers (i.e. masters)
* Leave node-role.kubernetes.io/master="" untouched as its
a Kubernetes convention
2018-03-18 16:39:10 -07:00
Dalton Hubble 21f2cef12f Improve changelog, README, and index page 2018-03-12 20:58:02 -07:00
Dalton Hubble 931e311786 Update Kubernetes from v1.9.3 to v1.9.4 2018-03-12 18:07:50 -07:00
Dalton Hubble 8e7e6b9f7f Normalize Terraform configs with terraform fmt 2018-03-11 14:46:05 -07:00
Dalton Hubble 35f3b1b28c Enable AWS NLB cross-zone load balancing
* https://github.com/terraform-providers/terraform-provider-aws/pull/3537
* https://aws.amazon.com/about-aws/whats-new/2018/02/network-load-balancer-now-supports-cross-zone-load-balancing/
2018-03-10 23:25:18 -08:00
Dalton Hubble 9fb1e1a0e2 Update etcd from v3.3.1 to v3.3.2
* https://github.com/coreos/etcd/releases/tag/v3.3.2
2018-03-10 13:44:35 -08:00