add leader election timeouts and durations to available parameters (#6691)

roles/kubernetes/master/defaults/main/main.yml

@@ -28,6 +28,13 @@ kube_etcd_key_file: node-{{ inventory_hostname }}-key.pem
 kube_controller_manager_bind_address: 0.0.0.0
 kube_scheduler_bind_address: 0.0.0.0
 
+# Leader election lease durations and timeouts for scheduler and controller-manager
+kube_controller_manager_leader_elect_lease_duration: 15s
+kube_controller_manager_leader_elect_renew_deadline: 10s
+
+kube_scheduler_leader_elect_lease_duration: 15s
+kube_scheduler_leader_elect_renew_deadline: 10s
+
 # discovery_timeout modifies the discovery timeout
 discovery_timeout: 5m0s
 

roles/kubernetes/master/templates/kubeadm-config.v1beta2.yaml.j2

@@ -262,6 +262,8 @@ controllerManager:
     profiling: "{{ kube_profiling }}"
     terminated-pod-gc-threshold: "{{ kube_controller_terminated_pod_gc_threshold }}"
     bind-address: {{ kube_controller_manager_bind_address }}
+    leader-elect-lease-duration: {{ kube_controller_manager_leader_elect_lease_duration }}
+    leader-elect-renew-deadline: {{ kube_controller_manager_leader_elect_renew_deadline }}
 {% if kube_feature_gates %}
     feature-gates: {{ kube_feature_gates|join(',') }}
 {% endif %}
@@ -307,6 +309,8 @@ controllerManager:
 scheduler:
   extraArgs:
     bind-address: {{ kube_scheduler_bind_address }}
+    leader-elect-lease-duration: {{ kube_scheduler_leader_elect_lease_duration }}
+    leader-elect-renew-deadline: {{ kube_scheduler_leader_elect_renew_deadline }}
 {% if kube_feature_gates %}
     feature-gates: {{ kube_feature_gates|join(',') }}
 {% endif %}