Signed-off-by: André R. de Miranda <andre@miranda.work>

Addressing the discussion started in #4064, this PR moves kubeadm and
hyperkube binaries to /usr/local/bin before running them on the master
nodes.

It is to address the case where local_release_dir points to /tmp
(kubespray default) and /tmp is mounted with noexec mode, preventing
any binaries to be run in that partition.

In role "node", we still move kubeadm to bin_dir only on the worker
nodes.

Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>

* add vars for cilium init container

* make yamllint happy

* add var cilium_init in downloads

* 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

* [jjo] add kube-router support

Fixes cloudnativelabs/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

* Allow configuration of nginx proxy config path

* Fix the internal nginx configuration location

Signed-off-by: Johann Queuniet <contact@lordran.net>

* Support for AWS cloud-config

* Update docs

* Fix version incompatibilities

* Do not use shorthand `default`

* Add new cloud config variable, roleArn

https://kubernetes.io/blog/2018/07/11/dynamic-kubelet-configuration/

Upgrade Kubernetes to V1.11.2
The kubeadm configuration file version has been upgraded from v1alpha1 to v1alpha2
Add bootstrap kubeadm-config.yaml with external etcd

* Add tags for cert serial tasks

This will help facilitate tag-based deployment of specific components.

* fixup kubernetes node

Red Hat has this theory that binaries in sbin are too dangerous to be on
the default path, but we need them anyway.

RH7 has /sbin and /usr/sbin as symlinks, so that is no longer important.

I'm adding it to the `PATH` instead of making the path to `modinfo`
absolute because I am worried about breaking support for other
distributions.

* sysctl file should be in defaults so that it can be overriden

* Change sysctl_file_path to be consistent with roles/kubernetes/preinstall/defaults/main.yml

This file should only be updated during kubelet upgrade so that
master components are not accidentally restarted first during
preinstall stage.

Support ipvs mode for kube-proxy

import_tasks will consume far less memory, so it should be
used whenever it is compatible.

As we have seen with other containers, sometimes container removal fails on the first attempt due to some Docker bugs. Retrying typically corrects the issue.

* Defaults for apiserver_loadbalancer_domain_name

When loadbalancer_apiserver is defined, use the
apiserver_loadbalancer_domain_name with a given default value.

Fix unconsistencies for checking if apiserver_loadbalancer_domain_name
is defined AND using it with a default value provided at once.

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>

* Define defaults for LB modes in common defaults

Adjust the defaults for apiserver_loadbalancer_domain_name and
loadbalancer_apiserver_localhost to come from a single source, which is
kubespray-defaults. Removes some confusion and simplefies the code.

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>

* Fixes an issue where apiserver and friends (controller manager, scheduler) were prevented from restarting after manifests/secrets are changed. This occurred when a replaced kubelet doesn't reconcile new master manifests, which caused old master component versions to linger during deployment. In my case this was causing upgrades from k8s 1.6/1.7 -> k8s 1.8 to fail
* Improves transitions from kubelet container to host kubelet by preventing issues where kubelet container reappeared during the deployment

* Restart kubelet on update in deployment-type host on update

* Update install_host.yml

* Update install_host.yml

* Update install_host.yml