Commit Graph

99 Commits

Author SHA1 Message Date
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 679079b242 Add AWS ingress_zone_id output with NLB DNS name's Route53 zone id
* DNS zones served by AWS Route53 may use AWS's special alias records
(other DNS providers would use a CNAME) to resolve the ingress NLB.
Alias records require the NLB DNS name's DNS zone id (not the cluster
`dns_zone_id`)
2019-01-13 16:45:52 -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 1d66ad33f7 Change AWS worker modules' default type from t2.small to t3.small
* Worker instance types weren't updated in #365
2019-01-12 00:07:48 -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
Dalton Hubble df4c0ba05d Use HTTPS liveness probes for kube-scheduler and kube-controller-manager
* Disable kube-scheduler and kube-controller-manager HTTP ports
2019-01-09 20:56:50 -08:00
Dalton Hubble bfe0c74793 Enable the certificates.k8s.io API to issue cluster certificates
* System components that require certificates signed by the cluster
CA can submit a CSR to the apiserver, have an administrator inspect
and approve it, and be issued a certificate
* Configure kube-controller-manager to sign Approved CSR's using the
cluster CA private key
* Admins are responsible for approving or denying CSRs, otherwise,
no certificate is issued. Read the Kubernetes docs carefully and
verify the entity making the request and the authorization level
* https://kubernetes.io/docs/tasks/tls/managing-tls-in-a-cluster
2019-01-06 17:33:37 -08:00
Dalton Hubble 60c70797ec Use a single format of the admin kubeconfig
* Use a single admin kubeconfig for initial bootkube bootstrap
and for use by a human admin. Previously, an admin kubeconfig
without a named context was used for bootstrap and direct usage
with KUBECONFIG=path, while one with a named context was used
for `kubectl config use-context` style usage. Confusing.
* Provide the admin kubeconfig via `assets/auth/kubeconfig`,
`assets/auth/CLUSTER-config`, or output `kubeconfig-admin`
2019-01-05 14:57:18 -08:00
Dalton Hubble 6795a753ea Update CoreDNS from v1.2.6 to v1.3.0
* https://coredns.io/2018/12/15/coredns-1.3.0-release/
2019-01-05 13:35:03 -08:00
Dalton Hubble b57273b6f1 Rename internal kube_dns_service_ip to cluster_dns_service_ip
* terraform-render-bootkube module deprecated kube_dns_service_ip
output in favor of cluster_dns_service_ip
* Rename k8s_dns_service_ip to cluster_dns_service_ip for
consistency too
2019-01-05 13:32:03 -08:00
Dalton Hubble 812a1adb49 Use a lower-privilege Kubelet kubeconfig in system:nodes
* Kubelets can use a lower-privilege TLS client certificate with
Org system:nodes and a binding to the system:node ClusterRole
* Admin kubeconfig's continue to belong to Org system:masters to
provide cluster-admin (available in assets/auth/kubeconfig or as
a Terraform output kubeconfig-admin)
* Remove bare-metal output variable kubeconfig
2019-01-05 13:08:56 -08:00
Dalton Hubble 66e1365cc4 Add ServiceAccounts for kube-apiserver and kube-scheduler
* Add ServiceAccounts and ClusterRoleBindings for kube-apiserver
and kube-scheduler
* Remove the ClusterRoleBinding for the kube-system default ServiceAccount
* Rename the CA certificate CommonName for consistency with upstream
2019-01-01 20:16:14 -08:00
Dalton Hubble f2f4deb8bb Change AWS default type from t2.small to t3.small
* T3 is the next generation general purpose burstable
instance type. Compared with t2.small, the t3.small is
cheaper, has 2 vCPU (instead of 1) and provides 5 Gbps
of pod-to-pod bandwidth (instead of 1 Gbps)
2018-12-18 12:38:35 -08:00
Dalton Hubble bcb200186d Add admin kubeconfig as a Terraform output
* May be used to write a local file
2018-12-15 22:52:28 -08:00
Dalton Hubble 479d498024 Update Calico from v3.3.2 to v3.4.0
* https://docs.projectcalico.org/v3.4/releases/
2018-12-15 18:05:16 -08:00
Dalton Hubble 018c5edc25 Update Kubernetes from v1.13.0 to v1.13.1
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.13.md#v1131
2018-12-15 11:44:57 -08:00
Dalton Hubble ff6ab571f3 Update Calico from v3.3.1 to v3.3.2
* https://docs.projectcalico.org/v3.3/releases/
2018-12-06 22:56:55 -08:00
Dalton Hubble d31f444fcd Update Kubernetes from v1.12.3 to v1.13.0 2018-12-03 20:44:32 -08:00
Dalton Hubble 76d993cdae Add experimental kube-router CNI provider
* Add kube-router for pod networking and NetworkPolicy
as an experiment
* Experiments are not documented or supported in any way,
and may be removed without notice. They have known issues
and aren't enabled without special options.
2018-12-03 19:52:28 -08:00
Dalton Hubble 64b4c10418 Improve features and modules list docs
* Remove bullet about isolating workloads on workers, its
now common practice and new users will assume it
* List advanced features available in each module
* Fix erroneous Kubernetes version listing for Google Cloud
Fedora Atomic
2018-11-26 22:58:00 -08:00
Dalton Hubble 5b27d8d889 Update Kubernetes from v1.12.2 to v1.12.3
* https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.12.md/#v1123
2018-11-26 21:06:09 -08:00
Dalton Hubble 840b73f9ba Update pod-checkpointer image to query Kubelet secure API
* Updates pod-checkpointer to prefer the Kubelet secure
API (before falling back to the Kubelet read-only API that
is disabled on Typhoon clusters since
https://github.com/poseidon/typhoon/pull/324)
* Previously, pod-checkpointer checkpointed an initial set
of pods during bootstrapping so recovery from power cycling
clusters was unaffected, but logs were noisy
* https://github.com/kubernetes-incubator/bootkube/pull/1027
* https://github.com/kubernetes-incubator/bootkube/pull/1025
2018-11-26 20:24:32 -08:00
Dalton Hubble 915af3c6cc Fix Calico Felix reporting usage data, require opt-in
* Calico Felix has been reporting anonymous usage data about the
version and cluster size, which violates Typhoon's privacy policy
where analytics should be opt-in only
* Add a variable enable_reporting (default: false) to allow opting
in to reporting usage data to Calico (or future components)
2018-11-20 01:03:00 -08:00
Dalton Hubble ea3fc6d2a7 Update CoreDNS from v1.2.4 to v1.2.6
* https://coredns.io/2018/11/05/coredns-1.2.6-release/
2018-11-18 16:45:53 -08:00
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 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