Fix install on CentOS 7.

.travis.yml

@@ -5,7 +5,6 @@ env:
   - distro: centos7
   - distro: ubuntu1604
   - distro: debian9
-  - distro: fedora27
 
 script:
   # Configure test script so we can run extra tests after playbook is run.

README.md

@@ -38,6 +38,10 @@ TODO.
     kubernetes_apt_repository: "deb http://apt.kubernetes.io/ kubernetes-xenial {{ kubernetes_apt_release_channel }}"
     kubernetes_apt_ignore_key_error: False
 
+TODO.
+
+    kubernetes_yum_arch: x86_64
+
 TODO.
 
 ## Dependencies

defaults/main.yml

@@ -20,4 +20,3 @@ kubernetes_apt_repository: "deb http://apt.kubernetes.io/ kubernetes-xenial {{ k
 kubernetes_apt_ignore_key_error: False
 
 kubernetes_yum_arch: x86_64
-kubernetes_yum_repo_url: "https://packages.cloud.google.com/yum/repos/kubernetes-el7-{{ kubernetes_yum_arch }}"

meta/main.yml

@@ -11,9 +11,6 @@ galaxy_info:
   - name: EL
     versions:
     - 7
-  - name: Fedora
-    versions:
-    - all
   - name: Debian
     versions:
     - stretch

tasks/main.yml

@@ -66,6 +66,8 @@
   with_items:
     - kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
     - kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
+  register: flannel_networking_result
+  changed_when: "'unchanged' not in flannel_networking_result.stdout"
 
 # TODO: Check if taint exists with something like `kubectl describe nodes`
 # instead of using kubernetes_init_stat.stat.exists check.

tasks/setup-RedHat.yml

 ---
-- name: Add Kubernetes GPG key.
+- name: Ensure Kubernetes repository exists.
+  yum_repository:
+    name: kubernetes
+    description: Kubernetes
+    enabled: yes
+    gpgcheck: yes
+    repo_gpgcheck: yes
+    baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-{{ kubernetes_yum_arch }}
+    gpgkey:
+      - https://packages.cloud.google.com/yum/doc/yum-key.gpg
+      - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
+
+- name: Add Kubernetes GPG keys.
   rpm_key:
-    key: https://packages.cloud.google.com/yum/doc/yum-key.gpg
+    key: "{{ item }}"
     state: present
+  register: kubernetes_rpm_key
+  with_items:
+    - https://packages.cloud.google.com/yum/doc/yum-key.gpg
+    - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
 
-- name: Add Kubernetes repository.
-  get_url:
-    url: "{{ kubernetes_yum_repo_url }}"
-    dest: '/etc/yum.repos.d/kubernetes.repo'
-    owner: root
-    group: root
-    mode: 0644
+- name: Make cache if Kubernetes GPG key changed.
+  command: "yum -q makecache -y --disablerepo='*' --enablerepo='kubernetes'"
+  when: kubernetes_rpm_key is changed
+  warn: no