Kubernetes集群如何查看scheduler/controller manager谁是leader

方法一

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1. 查看kube-system中的endpoints

   <root@PROD-K8S-CP1 ~># kubectl get endpoints -n kube-system
   NAME                      ENDPOINTS                                                      AGE
   cilium-agent              10.1.0.10:9095,10.1.0.11:9095,10.1.0.12:9095 + 24 more...      85d
   csi-provisioner           10.1.0.11:12345                                                108d
   kube-controller-manager   <none>                                                         111d
   kube-dns                  172.21.2.227:53,172.21.3.26:53,172.21.2.227:9153 + 3 more...   111d
   kube-dns-tcp              172.21.2.227:53,172.21.3.26:53                                 82d
   kube-dns-udp              172.21.2.227:53,172.21.3.26:53                                 82d
   kube-scheduler            <none>                                                         111d
   metrics-server            172.21.3.136:443                                               101d

2. 查看具体的kube-scheduler kube-controller-manager具体的属性

   <root@PROD-K8S-CP1 ~># kubectl describe endpoints -n kube-system kube-scheduler 
   Name:         kube-scheduler
   Namespace:    kube-system
   Labels:       <none>
   Annotations:  control-plane.alpha.kubernetes.io/leader:
                   {"holderIdentity":"PROD-K8S-CP1_8759bfa1-1c6e-4e16-b87f-dce5fae0d4f3","leaseDurationSeconds":15,"acquireTime":"2021-09-12T15:13:03Z","rene...
   Subsets:
   Events:  <none>
   
   ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
   
   <root@PROD-K8S-CP1 ~># kubectl describe endpoints -n kube-system kube-controller-manager 
   Name:         kube-controller-manager
   Namespace:    kube-system
   Labels:       <none>
   Annotations:  control-plane.alpha.kubernetes.io/leader:
                   {"holderIdentity":"PROD-K8S-CP2_02a9a213-0f0a-47c3-8407-d576de8b66e3","leaseDurationSeconds":15,"acquireTime":"2021-09-12T15:01:45Z","rene...
   Subsets:
   Events:  <none>

方法二

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1. 查看kube-system中的leases资源，

   <root@PROD-K8S-CP1 ~># kubectl get leases -n kube-system
   NAME                                                       HOLDER                                              AGE
   cilium-operator-resource-lock                              PROD-SYS-K8S-WN1-kqjJbDPMxJ                         111d
   diskplugin-csi-alibabacloud-com                            PROD-SYS-K8S-WN3                                    108d
   external-attacher-leader-diskplugin-csi-alibabacloud-com   PROD-SYS-K8S-WN3                                    108d
   external-resizer-diskplugin-csi-alibabacloud-com           PROD-SYS-K8S-WN3                                    108d
   kube-controller-manager                                    PROD-K8S-CP2_02a9a213-0f0a-47c3-8407-d576de8b66e3   111d
   kube-scheduler                                             PROD-K8S-CP1_8759bfa1-1c6e-4e16-b87f-dce5fae0d4f3   111d