* Add support for running a nodelocal dns cache
After encountering dns issues in a cluster I was recently working on I
noticed Kubernetes 1.13 introduced support for running a nodelocal dns
cache.
I believe this can usefull for more people.
73b548db06https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/0030-nodelocal-dns-cache.md
* Add requested changes
* Add additional requested changes + documentation
* Add requested changes after review
* Replace incorrect variable
* Upgrade kubernetes to v1.13.0
* Remove all precense of scheduler.alpha.kubernetes.io/critical-pod in templates
* Fix cert dir
* Use kubespray v2.8 as baseline for gitlab
* Remove non-kubeadm deployment
* More cleanup
* More cleanup
* More cleanup
* More cleanup
* Fix gitlab
* Try stop gce first before absent to make the delete process work
* More cleanup
* Fix bug with checking if kubeadm has already run
* Fix bug with checking if kubeadm has already run
* More fixes
* Fix test
* fix
* Fix gitlab checkout untill kubespray 2.8 is on quay
* Fixed
* Add upgrade path from non-kubeadm to kubeadm. Revert ssl path
* Readd secret checking
* Do gitlab checks from v2.7.0 test upgrade path to 2.8.0
* fix typo
* Fix CI jobs to kubeadm again. Fix broken hyperkube path
* Fix gitlab
* Fix rotate tokens
* More fixes
* More fixes
* Fix tokens
* Remove variables defined in download role. Fixes#3799
* Cleanup some more variables
* Fix bad templating
* Minor fix
* Add dashboard to download role. Fixes#3736
Introduced variable `ingress_nginx_tolerations` to set custom
tolerations for Ingress nginx daemonset, to be able to schedule
ingress-nginx on dedicated nodes with taints.
* Support Metrics Server as addon (#3560).
* Update metrics server v0.3.1.
* Add metrics server test.
* Replace metrics server manifests with kubernetes/cluster/addons's.
* Modify metrics server manifests for kubespray.
* Follow PR#3558 node label node-role.kubernetes.io/master change
* Fix metrics server parameters base_metrics_server_... to metrics_server_...
* Fix too hard corded metrics_server_memory_per_node
* Add configurable insecure tls for metrics-apiservice
* Downloadable addon-resizer and extract parameter as variables
* Remove metrics server version from deployment name
* Metrics Server work when all masters has node role
* Download metrics-server and add-resizer container only on master
* ServiceAccount and ConfigMap is separated and fix application name
* Remove old metrics server clusterrole template
* Fix addon-resizer image specify
* Make InternalIP default for metrics_server_kubelet_preferred_address_types
Make InternalIP default because multiple preferrred address types does not work.
comparison that happens during `TASK [kubernetes-apps/ansible : Kubernetes Apps | Lay Down CoreDNS Template]` where the `dns-autoscaler` template is deployed causes coredns to fail deployment. The error is caused by the variable `dns_prevent_single_point_failure` where an integer is being compared with a string. The resulting error:
```bash
'>' not supported between instances of 'int' and 'str'
```
prevents successful deployment of CoreDNS.
The change makes the comparison happen between integers and allows CoreDNS to succeed.
* Enable AutoScaler for CoreDNS
* Only use one template for dns autoscaler
* Rename a few variables for replicas and minimum pods
* Rename a few variables for replicas and minimum pods
* Remove replicas to make autoscale work
* Cleanup kubedns-autoscaler as it has been renamed
* Adds support for Multus (multiple interfaces) CNI plugin
Multus is a latin word for "Multi". As the name suggests, it acts as a
Multi plugin in Kubernetes and provides multiple network interface
support in a pod. Multus uses the concept of invoking delegates by
grouping multiple plugins into delegates and invoking them in the
sequential order of the CNI configuration file provided in json format.
* Change CNI version (0.1.0->0.3.1) of Contiv to be compatible with Multus
* failed
* version_compare
* succeeded
* skipped
* success
* version_compare becomes version since ansible 2.5
* ansible minimal version updated in doc and spec
* last version_compare
* [jjo] add kube-router support
Fixescloudnativelabs/kube-router#147.
* add kube-router as another network_plugin choice
* support most used kube-router flags via
`kube_router_foo` vars as other plugins
* implement replacing kube-proxy (--run-service-proxy=true) via
`kube_proxy_mode: none`, verified in a _non kubeadm_enabled_
install, should also work for recent kubeadm releases via
`skipKubeProxyInstall: true` config
* [jjo] address PR#3339 review from @woopstar
* add busybox image used by kube-router to downloads
* fix busybox download groups key
* rework kubeadm_enabled + kube_router_run_service_proxy
- verify it working ok w/the kubeadm_enabled and
kube_router_run_service_proxy true or false
- introduce `kube_proxy_remove` fact, to decouple logic
from kube_proxy_mode (which affects kubeadm configmap
settings, thus no-good to ab-use it to 'none')
* improve kube-router.md re: kubeadm_enabled and kube_router_run_service_proxy
* address @woopstar latest review
* add inventory/sample/group_vars/k8s-cluster/k8s-net-kube-router.yml
* fix kube_router_run_service_proxy conditional for kube-proxy removal
* fix kube_proxy_remove fact (w/ |bool), add some needed kube-proxy tags on my and existing changes
* update kube-router tolerations for 1.12 compatibility
* add PriorityClass to kube-router DaemonSet
* Added Priority class to tiller installation and also fixed tiller override implementation.
* Added changes to handle priority classes separately in tiller, instead of using the variable tiller_override
* Fix DNS loop when resolvconf_mode is set to host_resolvconf
* Make sure upstream_dns_servers is defined when using resolvconf_mode == 'host_resolvconf'
* Only set upstream dns servers on KubeDNS and CoreDNS if they are defined
* Only set upstream dns servers on KubeDNS and CoreDNS if they are defined
- Local Volume StorageClass configuration is now manged by `local_volume_provisioner_storage_classes`, a list of maps that specifies local storage classes with `name` `host_dir` and `mount_dir` keys per entry
- Tasks and templates updated to loop through local volume storage classes
- Previous defaults for path/class names were not changed
- Fixed an issue where a `kubernetes/preinstall` was creating directories inconsistently with the `kubernetes-apps/external_provisioner/local_volume_provisioner` task
According to the documentation, container images are described
by vars like `foo_image_repo` and `foo_image_tag`.
The variables netcheck_{agent,server}_{img_repo,tag} do not
follow that convention.
* Changes to assign pod priority to kube components.
* Removed the boolean flag pod_priority_assignment
* Created new priorityclass k8s-cluster-critical
* Created new priorityclass k8s-cluster-critical
* Fixed the trailing spaces
* Fixed the trailing spaces
* Added kube version check while creating Priority Class k8s-cluster-critical
* Moved k8s-cluster-critical.yml
* Moved k8s-cluster-critical.yml to kube_config_dir
When enable_network_policy is set to True with Calico 3 kubectl
apply fails with the error:
The Deployment "calico-kube-controllers" is invalid:
spec.strategy.rollingUpdate: Forbidden: may not be specified when
strategy type is 'Recreate'
See
https://github.com/kubernetes-incubator/kubespray/issues/3267
Changing the update strategy to RollingUpdate avoids this error.
ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version
remove empty when line
ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version
force kubeadm upgrade due to failure without --force flag
ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version
added nodeSelector to have compatibility with hybrid cluster with win nodes, also fix for download with missing container type
fixes in syntax and LF for newline in files
fix on yamllint check
ensure there is pin priority for docker package to avoid upgrade of docker to incompatible version
some cleanup for innecesary lines
remove conditions for nodeselector
* calico upgrade to v3
* update calico_rr version
* add missing file
* change contents of main.yml as it was left old version
* enable network policy by default
* remove unneeded task
* Fix kubelet calico settings
* fix when statement
* switch back to node-kubeconfig.yaml
* Update local-volume-provisioner-ds.yml.j2
After v1.10.2 default mountPropagation is "None"
* local_volume_provisioner version bump
v2.1.0 uses the beta nodeAffinity API by default which is available starting 1.10
* Update local-volume-provisioner-ds.yml.j2
MY_NAMESPACE env
* Update README.md
Raw block devices docs.
* kubedns & kubedns-autoscaler: Stick to master nodes.
- Tolerate only master nodes and not any NoSchedule taint
- Pods are on different nodes
- Pods are required to be on a master node.
* kubedns: use soft nodeAffinity.
Prefer to be on a master node, don't require.
* coredns: Stick to (different) master nodes.
- Pods are on different nodes
- Pods are preferred to be on a master node.
