Add KubeSchedulerConfiguration for k8s 1.19 and up

roles/kubernetes/control-plane/defaults/main/kube-scheduler.yml

@@ -0,0 +1,33 @@
+---
+# Extra args passed by kubeadm
+kube_kubeadm_scheduler_extra_args: {}
+
+# Associated interface must be reachable by the rest of the cluster, and by
+# CLI/web clients.
+kube_scheduler_bind_address: 0.0.0.0
+
+# ClientConnection options (e.g. Burst, QPS) except from kubeconfig.
+kube_scheduler_client_conn_extra_opts: {}
+
+# Additional KubeSchedulerConfiguration settings (e.g. metricsBindAddress).
+kube_scheduler_config_extra_opts: {}
+
+# List of scheduler extenders (dicts), each holding the values of how to
+# communicate with the extender.
+kube_scheduler_extenders: []
+
+# Leader Election options (e.g. ResourceName, RetryPerion) except from
+# LeaseDuration and Renew deadline which are defined in following vars.
+kube_scheduler_leader_elect_extra_opts: {}
+
+# Leader election lease duration
+kube_scheduler_leader_elect_lease_duration: 15s
+
+# Leader election lease timeout
+kube_scheduler_leader_elect_renew_deadline: 10s
+
+# Lisf of scheduling profiles (ditcs) supported by kube-scheduler
+kube_scheduler_profiles: []
+
+# Extra volume mounts
+scheduler_extra_volumes: {}

roles/kubernetes/control-plane/defaults/main/main.yml

@@ -26,15 +26,11 @@ kube_etcd_key_file: node-{{ inventory_hostname }}-key.pem
 # Associated interfaces must be reachable by the rest of the cluster, and by
 # CLI/web clients.
 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
+# Leader election lease durations and timeouts for 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
 
@@ -134,7 +130,6 @@ kubelet_preferred_address_types: 'InternalDNS,InternalIP,Hostname,ExternalDNS,Ex
 ## Extra args for k8s components passing by kubeadm
 kube_kubeadm_apiserver_extra_args: {}
 kube_kubeadm_controller_extra_args: {}
-kube_kubeadm_scheduler_extra_args: {}
 
 ## Extra control plane host volume mounts
 ## Example:
@@ -145,7 +140,6 @@ kube_kubeadm_scheduler_extra_args: {}
 #    readOnly: true
 apiserver_extra_volumes: {}
 controller_manager_extra_volumes: {}
-scheduler_extra_volumes: {}
 
 ## Encrypting Secret Data at Rest
 kube_encrypt_secret_data: false

roles/kubernetes/control-plane/tasks/main.yml

@@ -15,6 +15,13 @@
     dest: "{{ kube_config_dir }}/webhook-authorization-config.yaml"
   when: kube_webhook_authorization|default(false)
 
+- name: Create kube-scheduler config
+  template:
+    src: kubescheduler-config.v1beta1.yaml.j2
+    dest: "{{ kube_config_dir }}/kubescheduler-config.yaml"
+    mode: 0644
+  when: kube_version is version('v1.19.0', '>=')
+
 - import_tasks: encrypt-at-rest.yml
   when:
     - kube_encrypt_secret_data

roles/kubernetes/control-plane/templates/kubeadm-config.v1beta2.yaml.j2

@@ -327,8 +327,12 @@ controllerManager:
 scheduler:
   extraArgs:
     bind-address: {{ kube_scheduler_bind_address }}
+{% if kube_version is version('v1.19.0', '>=') %}
+    config: {{ kube_config_dir }}/kubescheduler-config.yaml
+{% else %}
     leader-elect-lease-duration: {{ kube_scheduler_leader_elect_lease_duration }}
     leader-elect-renew-deadline: {{ kube_scheduler_leader_elect_renew_deadline }}
+{% endif %}
 {% if kube_feature_gates %}
     feature-gates: {{ kube_feature_gates|join(',') }}
 {% endif %}
@@ -344,8 +348,14 @@ scheduler:
     tls-cipher-suites: {% for tls in tls_cipher_suites %}{{ tls }}{{ "," if not loop.last else "" }}{% endfor %}
 
 {% endif %}
-{% if scheduler_extra_volumes %}
+{% if scheduler_extra_volumes or kube_version is version('v1.19.0', '>=') %}
   extraVolumes:
+{% if kube_version is version('v.1.19.0', '>=') %}
+  - name: kubescheduler-config
+    hostPath: {{ kube_config_dir }}/kubescheduler-config.yaml
+    mountPath: {{ kube_config_dir }}/kubescheduler-config.yaml
+    readOnly: true
+{% endif %}
 {% for volume in scheduler_extra_volumes %}
   - name: {{ volume.name }}
     hostPath: {{ volume.hostPath }}

roles/kubernetes/control-plane/templates/kubescheduler-config.v1beta1.yaml.j2

@@ -0,0 +1,24 @@
+apiVersion: kubescheduler.config.k8s.io/v1beta1
+kind: KubeSchedulerConfiguration
+clientConnection:
+  kubeconfig: "{{ kube_config_dir }}/scheduler.conf"
+{% for key in kube_scheduler_client_conn_extra_opts %}
+  {{ key }}: {{ kube_scheduler_client_conn_extra_opts[key] }}
+{% endfor %}
+{% if kube_scheduler_extenders %}
+extenders:
+{{ kube_scheduler_extenders | to_nice_yaml(indent=2, width=256) }}
+{% endif %}
+leaderElection:
+  leaseDuration: {{ kube_scheduler_leader_elect_lease_duration }}
+  renewDeadline: {{ kube_scheduler_leader_elect_renew_deadline }}
+{% for key in kube_scheduler_leader_elect_extra_opts %}
+  {{ key }}: {{ kube_scheduler_leader_elect_extra_opts[key] }}
+{% endfor %}
+{% if kube_scheduler_profiles %}
+profiles:
+{{ kube_scheduler_profiles | to_nice_yaml(indent=2, width=256) }}
+{% endif %}
+{% for key in kube_scheduler_config_extra_opts %}
+{{ key }}: {{ kube_scheduler_config_extra_opts[key] }}
+{% endfor %}