Workaround kubeadm 1.7.0 race condition

See kubernetes/kubeadm#335

files/kubeadm-1-7-0-race-condition-workaround.sh

@@ -0,0 +1,54 @@
+cat <<EOF | kubectl --kubeconfig=/etc/kubernetes/admin.conf apply -f -
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: Role
+metadata:
+  annotations:
+    rbac.authorization.kubernetes.io/autoupdate: "true"
+  labels:
+    kubernetes.io/bootstrapping: rbac-defaults
+  name: system:controller:bootstrap-signer
+  namespace: kube-public
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - configmaps
+  verbs:
+  - get
+  - list
+  - watch
+- apiGroups:
+  - ""
+  resourceNames:
+  - cluster-info
+  resources:
+  - configmaps
+  verbs:
+  - update
+- apiGroups:
+  - ""
+  resources:
+  - events
+  verbs:
+  - create
+  - patch
+  - update
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: RoleBinding
+metadata:
+  annotations:
+    rbac.authorization.kubernetes.io/autoupdate: "true"
+  labels:
+    kubernetes.io/bootstrapping: rbac-defaults
+  name: system:controller:bootstrap-signer
+  namespace: kube-public
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: system:controller:bootstrap-signer
+subjects:
+- kind: ServiceAccount
+  name: bootstrap-signer
+  namespace: kube-system
+EOF

roles/kubeadm-master/tasks/main.yaml

@@ -57,3 +57,6 @@
   become: True
   shell: kubectl completion bash > /etc/bash_completion.d/kubectl
   when: kubectl_bash_completion.stat.exists == False
+
+- name: Workaround kubeadm 1.7.0 race condition, see https://github.com/kubernetes/kubeadm/issues/335
+  script: kubeadm-1-7-0-race-condition-workaround.sh