PR

defaults/main.yml

@@ -17,8 +17,8 @@ kubernetes_allow_pods_on_master: True
 kubernetes_enable_web_ui: True
 kuberenetes_debug: False
 
-kubernetes_pod_network_cidr: '10.0.1.0/16'
+kubernetes_pod_network_cidr: '10.244.0.0/16'
-kubernetes_apiserver_advertise_address: ''
+kubernetes_apiserver_advertise_address: '0.0.0.0'
 kubernetes_version: 'stable-1.10'
 kubernetes_ignore_preflight_errors: 'all'
 

tasks/main.yml

@@ -35,6 +35,12 @@
     path: /etc/kubernetes/admin.conf
   register: kubernetes_init_stat
 
+- name: configure docker cgroup driver
+  shell:  sed -i "s/cgroup-driver=systemd/cgroup-driver=cgroupfs/g" /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
+
+- name: restart docker services
+  shell: systemctl daemon-reload && service kubelet restart
+
 # Set up master.
 - include_tasks: master-setup.yml
   when: kubernetes_role == 'master'
@@ -43,8 +49,8 @@
 - name: Get the kubeadm join command from the Kubernetes master.
   shell: kubeadm token create --print-join-command
   changed_when: False
-  when: kubernetes_role == 'master'
+  run_once: true
-  run_once: True
+  delegate_to: "{{ groups['master'][0] }}"
   register: kubernetes_join_command
 
 - include_tasks: node-setup.yml

tasks/master-setup.yml

@@ -44,7 +44,7 @@
     - kubernetes_init_stat.stat.exists == False
 
 - name: Check if Kubernetes Dashboard UI service already exists.
-  shell: kubectl get services --namespace kube-system | grep -q kubernetes-dashboard
+  shell: kubectl get pods -n kube-system | grep kubernetes-dashboard
   changed_when: False
   failed_when: False
   register: kubernetes_dashboard_service
@@ -54,4 +54,11 @@
   command: "kubectl create -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml"
   when:
     - kubernetes_enable_web_ui
-    - kubernetes_dashboard_service is failed
+    - kubernetes_dashboard_service.stdout.find("kubernetes-dashboard") == -1
+
+- name: Wait for cluster to be ready
+  shell: kubectl get nodes
+  register: cluster
+  until: cluster.stdout.find(" Ready") != -1
+  retries: 30
+  delay: 10

tasks/node-setup.yml

@@ -1,4 +1,8 @@
 ---
+- name: print join command
+  debug:
+    msg: "{{ kubernetes_join_command }}"
+
 - name: Join node to Kubernetes master
   shell: >
     {{ kubernetes_join_command.stdout }}