refactroing ansible part

Vagrantfile

@@ -1,6 +1,6 @@
 IMAGE_NAME = "bento/ubuntu-18.04"
 N = 1
-CNI_PLUGIN = "calico"
+CNI_PLUGIN = "flannel"
 DOCKER_VERSION = "5:18.09"
 K8S_VERSION = "1.15"
 

provision/kubernetes-setup/handlers/main.yml

@@ -0,0 +1,2 @@
+- name: docker status
+  service: name=docker state=started

provision/kubernetes-setup/master-playbook.yml

@@ -3,8 +3,20 @@
   become: true
   vars:
     cni_plugin: calico
-    pod_network_cidr: >
-      {{ (cni_plugin == 'flannel' or cni_plugin == 'canal') | ternary('10.244.0.0/16', '192.168.0.0/16') }}
+    calico_manifest_uri: https://docs.projectcalico.org/v3.8/manifests/calico.yaml
+    flannel_manifest_uri: "https://raw.githubusercontent.com/coreos/flannel/\
+        62e44c867a2846fefb68bd5f178daf4da3095ccb/Documentation/kube-flannel.yml"
+    canal_manifest_uri: https://docs.projectcalico.org/v3.8/manifests/canal.yaml
+    k8s_network_config:
+      calico:
+        pod_network_cidr: '192.168.0.0/16'
+        manifest_uri: "{{ calico_manifest_uri }}"
+      flannel:
+        pod_network_cidr: '10.244.0.0/16'
+        manifest_uri: "{{ flannel_manifest_uri }}"
+      canal:
+        pod_network_cidr: '10.244.0.0/16'
+        manifest_uri: "{{ canal_manifest_uri }}"
     docker_version: latest
     k8s_version: latest
   tasks:
@@ -17,6 +29,10 @@
       kubeadm init --apiserver-advertise-address="192.168.50.10"
       --apiserver-cert-extra-sans="192.168.50.10" --node-name k8s-master
       --pod-network-cidr={{ pod_network_cidr }}
+    args:
+      creates: /etc/kubernetes/admin.conf
+    vars:
+      pod_network_cidr: "{{ k8s_network_config[cni_plugin]['pod_network_cidr'] }}"
 
   - name: Setup kubeconfig for vagrant user
     command: "{{ item }}"
@@ -25,23 +41,12 @@
     - cp -i /etc/kubernetes/admin.conf /home/vagrant/.kube/config
     - chown vagrant:vagrant /home/vagrant/.kube/config
 
-  - name: Install calico pod network
+  - name: Install {{ cni_plugin }} pod network
     become: false
     command: >
-      kubectl apply -f https://docs.projectcalico.org/v3.8/manifests/calico.yaml
-    when: cni_plugin == 'calico'
-
-  - name: Install flannel pod network
-    become: false
-    command: >
-      kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/62e44c867a2846fefb68bd5f178daf4da3095ccb/Documentation/kube-flannel.yml
-    when: cni_plugin == 'flannel'
-
-  - name: Install canal pod network
-    become: false
-    command: >
-      kubectl apply -f https://docs.projectcalico.org/v3.8/manifests/canal.yaml
-    when: cni_plugin == 'canal'
+      kubectl apply -f {{ manifest_uri }}
+    vars:
+      manifest_uri: "{{ k8s_network_config[cni_plugin]['manifest_uri'] }}"
 
   - name: Generate join command
     command: kubeadm token create --print-join-command
@@ -51,5 +56,4 @@
     local_action: copy content="{{ join_command.stdout_lines[0] }}" dest="/vagrant/join-command"
 
   handlers:
-  - name: docker status
-    service: name=docker state=started
+  - import_tasks: handlers/main.yml

provision/kubernetes-setup/node-playbook.yml

@@ -15,5 +15,4 @@
     command: sh /tmp/join-command.sh
 
   handlers:
-  - name: docker status
-    service: name=docker state=started
+  - import_tasks: handlers/main.yml