* Fix proxy and module_hotfixes

On CentOS 8 with proxy ansible render inline `proxy` and `module_hotfixes` options.

For example:

`proxy=http://127.0.0.1:3128module_hotfixes=True`

But expected result:

```
proxy=http://127.0.0.1:3128
module_hotfixes=True
```

* Use ini_file module for work with ini files

* Prevent duplicates proxy= option in /etc/yum.conf

Module `lineinfile` is weak, use most powerful module `ini_file` and add or remove `proxy=` when `http_proxy` is defined or not.

* etcd: etcd-events doesn't depend on etcd_cluster_setup

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: remove condition already present on include_tasks

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: fix scaling up

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: use *access_addresses, do not delegate to etcd[0]

We want to wait for the full cluster to be healthy,
so use all the cluster addresses
Also we should be able to run the playbook when etcd[0] is down
(not tested), so do not delegate to etcd[0]

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* etcd: use failed_when for health check

unhealthy cluster is expected on first run, so use failed_when
instead of ignore_errors to remove scary red messages

Also use run_once

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* kubernetes/preinstall: ensure ansible_fqdn is up to date after changing /etc/hosts

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* kubernetes/master: regenerate apiserver cert if needed

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* Fix chicken and egg problem with proxy_env not defined on the first envinronment usage.

* Disable fact gathering for the first proxy_env evaluation.

* Move proxy_env var set up from the role defaults to the root playbooks as fact.

* Add checksums for v1.18.0

* Add crictl version for k8s 1.18

* Azure Disk CSI deployment

* Mention Azure CSI support

* Fix: remove unnecessary file

* Typo in documentation

* Add newline to end of file

Azure vmss - kubelet: failed to get instance ID from cloud provider: instance not found #5824 (#5855)

* kubernetes-sigs-kubespray #5824

Added support nodes which are part of Virtual Machine Scale Sets(VMSS)

* kubernetes-sigs-kubespray #5824

* kubernetes-sigs-kubespray #5824

Added comments and updatetd azure docs.

* kubernetes-sigs-kubespray #5824

Added supported values comments for "azure_vmtype" in azure.yml

* GCP Persistent Disk CSI Driver deployment

* Fix MD lint

* Fix Yaml lint

Signed-off-by: Chris Randles <randles.chris@gmail.com>

* Upgrade to Kubernetes 1.17.4 - change defaults

* Update ci jobs to previous k8s release (will fix them afterward)

Allows to add custom zone resolving servers.

* AWS EBS CSI implementation

* Fixing image repos

* Add OWNERS file

* Fix expressions

* Add csi-driver tag

* Add AWS EBS prefix to variables

* Add AWS EBS CSI Driver documentation

The variable is defined in `kubernetes/preinstall` role and used in several roles. Since `kubernetes/preinstall` is not always included when `ansible-playbook` is run with tag selectors (see #5734 for reason), they will fail, or individual roles must copy the same fact definitions (as in #3846). Moving the definition to the always-included `kubespray-defaults` role will resolve the dependency problem.

Co-authored-by: alexkomrakov <alexkomrakov@gmail.com>

we can't set module_hotfixes=True using yum_repository ansible module
Fixes 38688a44
(keep docker-ce.repo name)

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

- This solves issue #5721 & #5713 (dupes)
  - Provide a cleaner default usage pattern for the download role
    around etcd that supports 'host' and 'docker' properly
  - Extract the 'etcdctl' as a separate task install piece and reuse it where
    appropriate
  - Update the kubeadm-etcd task to reflect the above change

This implements the same behavior as https://github.com/kubernetes-sigs/kubespray/blob/a15a0b5eb954c29636b4257463ef29ab2f5a191c/roles/network_plugin/calico/templates/calico-node.yml.j2

More info: https://github.com/projectcalico/felix/issues/1447

Tests as filters support is removed as of Ansible 2.9
https://docs.ansible.com/ansible/latest/porting_guides/porting_guide_2.5.html#jinja-tests-used-as-filters



Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Fixed an issue where without a default GW, ansible_default_ipv4 would return an empty dict which passed as a valid fallback_ip dict item (#5394)

k8s-dns-node-cache now uses debian-iptables base images
to automatically use either iptables-legacy or iptables-nft
https://github.com/kubernetes/dns/pull/355
https://github.com/kubernetes/kubernetes/pull/82966



This adds support CentOS 8

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Fix check if user can use docker without sudo.