Enable ClearLinux as a distro in kubespray (#3855)

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

roles/kubernetes/node/tasks/main.yml

@@ -59,6 +59,11 @@
   failed_when: modinfo_br_netfilter.rc not in [0, 1]
   changed_when: false
 
+- name: Verify br_netfilter module path exists
+  file:
+    path: /etc/modules-load.d
+    state: directory
+
 - name: Enable br_netfilter module
   modprobe:
     name: br_netfilter

roles/kubernetes/preinstall/tasks/0020-verify-settings.yml

@@ -21,7 +21,7 @@
 
 - name: Stop if unknown OS
   assert:
-    that: ansible_distribution in ['RedHat', 'CentOS', 'Fedora', 'Ubuntu', 'Debian', 'CoreOS', 'Container Linux by CoreOS', 'openSUSE Leap', 'openSUSE Tumbleweed']
+    that: ansible_os_family in ['RedHat', 'CentOS', 'Fedora', 'Ubuntu', 'Debian', 'CoreOS', 'Container Linux by CoreOS', 'openSUSE Leap', 'openSUSE Tumbleweed', 'ClearLinux']
   ignore_errors: "{{ ignore_assert_errors }}"
 
 - name: Stop if unknown network plugin

roles/kubernetes/preinstall/tasks/0070-system-packages.yml

@@ -95,6 +95,14 @@
   retries: 4
   delay: "{{ retry_stagger | random + 3 }}"
   with_items: "{{required_pkgs | default([]) | union(common_required_pkgs|default([]))}}"
-  when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS"] or is_atomic)
+  when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS", "ClearLinux"] or is_atomic)
   tags:
     - bootstrap-os
+
+- name: Install ipvsadm for ClearLinux
+  swupd:
+    name: ipvsadm
+    state: present
+  when:
+    - ansible_os_family in ["ClearLinux"]
+    - kube_proxy_mode == 'ipvs'

roles/kubernetes/preinstall/tasks/0080-system-configurations.yml

@@ -45,6 +45,11 @@
   tags:
     - bootstrap-os
 
+- name: Make sure sysctl file path folder exists
+  file:
+    name: "{{ sysctl_file_path | dirname }}"
+    state: directory
+
 - name: Enable ip forwarding
   sysctl:
     sysctl_file: "{{sysctl_file_path}}"