Issue #5: Add more configuration ability to default Flannel network manifests.

README.md

@@ -59,6 +59,11 @@ Apt repository options for Kubernetes installation.
 
 Yum repository options for Kubernetes installation.
 
+    kubernetes_flannel_manifest_file_rbac: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
+    kubernetes_flannel_manifest_file: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
+
+Flannel manifest files to apply to the Kubernetes cluster to enable networking. You can copy your own files to your server and apply them instead, if you need to customize the Flannel networking configuration.
+
 ## Dependencies
 
 None.

defaults/main.yml

@@ -28,3 +28,7 @@ kubernetes_apt_repository: "deb http://apt.kubernetes.io/ kubernetes-xenial {{ k
 kubernetes_apt_ignore_key_error: False
 
 kubernetes_yum_arch: x86_64
+
+# Flannel config files.
+kubernetes_flannel_manifest_file_rbac: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
+kubernetes_flannel_manifest_file: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

tasks/master-setup.yml

@@ -30,8 +30,8 @@
 - name: Configure Flannel networking.
   command: "{{ item }}"
   with_items:
-    - kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
-    - kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
+    - kubectl apply -f {{ kubernetes_flannel_manifest_file_rbac }}
+    - kubectl apply -f {{ kubernetes_flannel_manifest_file }}
   register: flannel_result
   changed_when: "'created' in flannel_result.stdout"