查看k8s中etcd数据

1.查看ETCD集群中运行的ETCD pod

[root@master1 ~]# kubectl get pod -n kube-system | grep etcd
etcd-master1                      1/1     Running   0          61m
etcd-master2                      1/1     Running   0          58m
etcd-master3                      1/1     Running   0          56m

2.进入ETCD pod容器

[root@master1 ~]# kubectl exec -it etcd-master1 -n kube-system -- /bin/sh

3.设置环境变量为v3

export ETCDCTL_API=3

4.查看ETCD中所有的key，输入以下命令：

etcdctl --cacert=/etc/kubernetes/pki/etcd/ca.crt --cert=/etc/kubernetes/pki/etcd/healthcheck-client.crt --key=/etc/kubernetes/pki/etcd/healthcheck-client.key get / --prefix --keys-only

5.得到以下结果：

/registry/clusterrolebindings/system:volume-scheduler

/registry/clusterroles/admin

/registry/clusterroles/cluster-admin

/registry/clusterroles/edit

/registry/clusterroles/flannel

/registry/clusterroles/ks-installer

/registry/clusterroles/kubeadm:get-nodes

/registry/clusterroles/nfs-client-provisioner-runner

/registry/clusterroles/system:aggregate-to-admin

/registry/clusterroles/system:aggregate-to-edit

/registry/clusterroles/system:aggregate-to-view

/registry/clusterroles/system:auth-delegator

/registry/clusterroles/system:basic-user

/registry/clusterroles/system:certificates.k8s.io:certificatesigningrequests:nodeclient

/registry/clusterroles/system:certificates.k8s.io:certificatesigningrequests:selfnodeclient

/registry/clusterroles/system:certificates.k8s.io:kube-apiserver-client-approver

/registry/clusterroles/system:certificates.k8s.io:kube-apiserver-client-kubelet-approver

/registry/clusterroles/system:certificates.k8s.io:kubelet-serving-approver

/registry/clusterroles/system:certificates.k8s.io:legacy-unknown-approver

/registry/clusterroles/system:controller:attachdetach-controller

/registry/clusterroles/system:controller:certificate-controller

/registry/clusterroles/system:controller:clusterrole-aggregation-controller

/registry/clusterroles/system:controller:cronjob-controller

/registry/clusterroles/system:controller:daemon-set-controller

/registry/clusterroles/system:controller:deployment-controller

/registry/clusterroles/system:controller:disruption-controller

/registry/clusterroles/system:controller:endpoint-controller

/registry/clusterroles/system:controller:endpointslice-controller

/registry/clusterroles/system:controller:expand-controller

/registry/clusterroles/system:controller:generic-garbage-collector

/registry/clusterroles/system:controller:horizontal-pod-autoscaler

/registry/clusterroles/system:controller:job-controller

/registry/clusterroles/system:controller:namespace-controller

/registry/clusterroles/system:controller:node-controller

/registry/clusterroles/system:controller:persistent-volume-binder

/registry/clusterroles/system:controller:pod-garbage-collector

/registry/clusterroles/system:controller:pv-protection-controller

/registry/clusterroles/system:controller:pvc-protection-controller

/registry/clusterroles/system:controller:replicaset-controller

/registry/clusterroles/system:controller:replication-controller

/registry/clusterroles/system:controller:resourcequota-controller

/registry/clusterroles/system:controller:route-controller

/registry/clusterroles/system:controller:service-account-controller

/registry/clusterroles/system:controller:service-controller

/registry/clusterroles/system:controller:statefulset-controller

/registry/clusterroles/system:controller:ttl-controller

/registry/clusterroles/system:coredns

/registry/clusterroles/system:discovery

/registry/clusterroles/system:heapster

/registry/clusterroles/system:kube-aggregator

/registry/clusterroles/system:kube-controller-manager

/registry/clusterroles/system:kube-dns

/registry/clusterroles/system:kube-scheduler

/registry/clusterroles/system:kubelet-api-admin

/registry/clusterroles/system:node

/registry/clusterroles/system:node-bootstrapper

/registry/clusterroles/system:node-problem-detector

/registry/clusterroles/system:node-proxier

/registry/clusterroles/system:persistent-volume-provisioner

/registry/clusterroles/system:public-info-viewer

/registry/clusterroles/system:volume-scheduler

/registry/clusterroles/view

/registry/configmaps/kube-public/cluster-info

/registry/configmaps/kube-system/coredns

/registry/configmaps/kube-system/extension-apiserver-authentication

/registry/configmaps/kube-system/kube-flannel-cfg

/registry/configmaps/kube-system/kube-proxy

/registry/configmaps/kube-system/kubeadm-config

/registry/configmaps/kube-system/kubelet-config-1.18

/registry/controllerrevisions/kube-system/kube-flannel-ds-6bd695f86f

/registry/controllerrevisions/kube-system/kube-proxy-5f7b7d4f89

/registry/csinodes/master1

/registry/csinodes/master2

/registry/csinodes/master3

/registry/csinodes/node1

/registry/daemonsets/kube-system/kube-flannel-ds

/registry/daemonsets/kube-system/kube-proxy

/registry/deployments/default/nfs-client-provisioner

/registry/deployments/kube-system/coredns

/registry/deployments/kubesphere-system/ks-installer

/registry/endpointslices/default/kubernetes

/registry/endpointslices/kube-system/kube-dns-6twcp

/registry/events/default/nfs-client-provisioner-6d4469b5b5-6vfcm.1656a941b15fb15f

/registry/events/default/nfs-client-provisioner-6d4469b5b5-6vfcm.1656a946889f01f3

/registry/events/default/nfs-client-provisioner-6d4469b5b5-6vfcm.1656a9468a94e69d

/registry/events/default/nfs-client-provisioner-6d4469b5b5-6vfcm.1656a9469349ce73

/registry/events/default/nfs-client-provisioner-6d4469b5b5-6vfcm.1656a9487875612f

/registry/events/default/nfs-client-provisioner-6d4469b5b5-6vfcm.1656a949d68288ef

/registry/events/default/nfs-client-provisioner-6d4469b5b5-6vfcm.1656a953c3f77d6a

/registry/events/default/nfs-client-provisioner-6d4469b5b5-m46z5.1656a96f739daadc

/registry/events/default/nfs-client-provisioner-6d4469b5b5-m46z5.1656a97063207f35

/registry/events/default/nfs-client-provisioner-6d4469b5b5-m46z5.1656a9706616fe92

/registry/events/default/nfs-client-provisioner-6d4469b5b5-m46z5.1656a9706cc35b5d

/registry/events/default/nfs-client-provisioner-6d4469b5b5-m46z5.1656a972065e2a40

/registry/events/default/nfs-client-provisioner-6d4469b5b5-m46z5.1656a9779f9559f4

/registry/events/default/nfs-client-provisioner-6d4469b5b5.1656a94770dfc0c7

/registry/events/default/nfs-client-provisioner-6d4469b5b5.1656a949d58bd081

/registry/events/default/nfs-client-provisioner-6d4469b5b5.1656a97538aa6b1d

/registry/events/default/nfs-client-provisioner-6d4469b5b5.1656a9779d8eb208

/registry/events/default/nfs-client-provisioner.1656a9476ffefbeb

/registry/events/default/nfs-client-provisioner.1656a97537bfee9e

/registry/events/kube-system/coredns-66bff467f8-5mnfr.1656a8dc8a1d7b89

/registry/events/kube-system/coredns-66bff467f8-5mnfr.1656a8e50bccb286

/registry/events/kube-system/coredns-66bff467f8-5mnfr.1656a90868ef48d8

/registry/events/kube-system/coredns-66bff467f8-zbt6q.1656a8dc8aac58c5

/registry/events/kube-system/coredns-66bff467f8-zbt6q.1656a8e50c886a7b

/registry/events/kube-system/coredns-66bff467f8-zbt6q.1656a907f1b988b0

/registry/events/kubesphere-system/ks-installer-7cb866bd-k8x62.1656aab854c6ef5d

/registry/events/kubesphere-system/ks-installer-7cb866bd-k8x62.1656aac086f21fad

/registry/events/kubesphere-system/ks-installer-7cb866bd-k8x62.1656ab5dcdcded0d

/registry/events/kubesphere-system/ks-installer-7cb866bd-k8x62.1656ab5dd26086ac

/registry/events/kubesphere-system/ks-installer-7cb866bd-k8x62.1656ab5ddafeacbc

/registry/events/kubesphere-system/ks-installer-7cb866bd-k8x62.1656ab6144db00ae

/registry/events/kubesphere-system/ks-installer-7cb866bd.1656aac0858e0433

/registry/events/kubesphere-system/ks-installer.1656aac08466d684

/registry/leases/kube-node-lease/master1

/registry/leases/kube-node-lease/master2

/registry/leases/kube-node-lease/master3

/registry/leases/kube-node-lease/node1

/registry/leases/kube-system/kube-controller-manager

/registry/leases/kube-system/kube-scheduler

/registry/masterleases/192.168.200.3

/registry/masterleases/192.168.200.4

/registry/masterleases/192.168.200.5

/registry/minions/master1

/registry/minions/master2

/registry/minions/master3

/registry/minions/node1

/registry/namespaces/default

/registry/namespaces/kube-node-lease

/registry/namespaces/kube-public

/registry/namespaces/kube-system

/registry/namespaces/kubesphere-system

/registry/pods/default/nfs-client-provisioner-6d4469b5b5-m46z5

/registry/pods/kube-system/coredns-66bff467f8-5mnfr

/registry/pods/kube-system/coredns-66bff467f8-zbt6q

/registry/pods/kube-system/etcd-master1

/registry/pods/kube-system/etcd-master2

/registry/pods/kube-system/etcd-master3

/registry/pods/kube-system/kube-apiserver-master1

/registry/pods/kube-system/kube-apiserver-master2

/registry/pods/kube-system/kube-apiserver-master3

/registry/pods/kube-system/kube-controller-manager-master1

/registry/pods/kube-system/kube-controller-manager-master2

/registry/pods/kube-system/kube-controller-manager-master3

/registry/pods/kube-system/kube-flannel-ds-4zdjs

/registry/pods/kube-system/kube-flannel-ds-7hvlk

/registry/pods/kube-system/kube-flannel-ds-hmtgx

/registry/pods/kube-system/kube-flannel-ds-z8fvs

/registry/pods/kube-system/kube-proxy-448fc

/registry/pods/kube-system/kube-proxy-8jjrs

/registry/pods/kube-system/kube-proxy-cjnt8

/registry/pods/kube-system/kube-proxy-pf4wb

/registry/pods/kube-system/kube-scheduler-master1

/registry/pods/kube-system/kube-scheduler-master2

/registry/pods/kube-system/kube-scheduler-master3

/registry/pods/kubesphere-system/ks-installer-7cb866bd-k8x62

/registry/podsecuritypolicy/psp.flannel.unprivileged

/registry/priorityclasses/system-cluster-critical

/registry/priorityclasses/system-node-critical

/registry/ranges/serviceips

/registry/ranges/servicenodeports

/registry/replicasets/default/nfs-client-provisioner-6d4469b5b5

/registry/replicasets/kube-system/coredns-66bff467f8

/registry/replicasets/kubesphere-system/ks-installer-7cb866bd

/registry/rolebindings/default/leader-locking-nfs-client-provisioner

/registry/rolebindings/kube-public/kubeadm:bootstrap-signer-clusterinfo

/registry/rolebindings/kube-public/system:controller:bootstrap-signer

/registry/rolebindings/kube-system/kube-proxy

/registry/rolebindings/kube-system/kubeadm:kubelet-config-1.18

/registry/rolebindings/kube-system/kubeadm:nodes-kubeadm-config

/registry/rolebindings/kube-system/system::extension-apiserver-authentication-reader

/registry/rolebindings/kube-system/system::leader-locking-kube-controller-manager

/registry/rolebindings/kube-system/system::leader-locking-kube-scheduler

/registry/rolebindings/kube-system/system:controller:bootstrap-signer

/registry/rolebindings/kube-system/system:controller:cloud-provider

/registry/rolebindings/kube-system/system:controller:token-cleaner

/registry/roles/default/leader-locking-nfs-client-provisioner

/registry/roles/kube-public/kubeadm:bootstrap-signer-clusterinfo

/registry/roles/kube-public/system:controller:bootstrap-signer

/registry/roles/kube-system/extension-apiserver-authentication-reader

/registry/roles/kube-system/kube-proxy

/registry/roles/kube-system/kubeadm:kubelet-config-1.18

/registry/roles/kube-system/kubeadm:nodes-kubeadm-config

/registry/roles/kube-system/system::leader-locking-kube-controller-manager

/registry/roles/kube-system/system::leader-locking-kube-scheduler

/registry/roles/kube-system/system:controller:bootstrap-signer

/registry/roles/kube-system/system:controller:cloud-provider

/registry/roles/kube-system/system:controller:token-cleaner

/registry/secrets/default/default-token-wxkdj

/registry/secrets/default/nfs-client-provisioner-token-qtdgc

/registry/secrets/kube-node-lease/default-token-7zmh4

/registry/secrets/kube-public/default-token-2tt47

/registry/secrets/kube-system/attachdetach-controller-token-jt8j7

/registry/secrets/kube-system/bootstrap-signer-token-6n4mt

/registry/secrets/kube-system/bootstrap-token-abcdef

/registry/secrets/kube-system/certificate-controller-token-n46v9

/registry/secrets/kube-system/clusterrole-aggregation-controller-token-ql46p

/registry/secrets/kube-system/coredns-token-jk5d4

/registry/secrets/kube-system/cronjob-controller-token-glvbw

/registry/secrets/kube-system/daemon-set-controller-token-fm7nq

/registry/secrets/kube-system/default-token-c2jsb

/registry/secrets/kube-system/deployment-controller-token-rmphl

/registry/secrets/kube-system/disruption-controller-token-9qnlq

/registry/secrets/kube-system/endpoint-controller-token-vqbjw

/registry/secrets/kube-system/endpointslice-controller-token-jl5jb

/registry/secrets/kube-system/expand-controller-token-mnbcr

/registry/secrets/kube-system/flannel-token-ksmc9

/registry/secrets/kube-system/generic-garbage-collector-token-r4t6z

/registry/secrets/kube-system/horizontal-pod-autoscaler-token-lrbq2

/registry/secrets/kube-system/job-controller-token-c6tnv

/registry/secrets/kube-system/kube-proxy-token-tqsxf

/registry/secrets/kube-system/namespace-controller-token-2gxqg

/registry/secrets/kube-system/node-controller-token-rmv4l

/registry/secrets/kube-system/persistent-volume-binder-token-tmsqx

/registry/secrets/kube-system/pod-garbage-collector-token-xdff7

/registry/secrets/kube-system/pv-protection-controller-token-xln2j

/registry/secrets/kube-system/pvc-protection-controller-token-2bh9w

/registry/secrets/kube-system/replicaset-controller-token-kbvww

/registry/secrets/kube-system/replication-controller-token-8j9w6

/registry/secrets/kube-system/resourcequota-controller-token-mk2j8

/registry/secrets/kube-system/service-account-controller-token-x4pln

/registry/secrets/kube-system/service-controller-token-cwsgw

/registry/secrets/kube-system/statefulset-controller-token-5gkzv

/registry/secrets/kube-system/token-cleaner-token-bwq7j

/registry/secrets/kube-system/ttl-controller-token-jqf5c

/registry/secrets/kubesphere-system/default-token-47z4j

/registry/secrets/kubesphere-system/ks-installer-token-zfh7b

/registry/serviceaccounts/default/default

/registry/serviceaccounts/default/nfs-client-provisioner

/registry/serviceaccounts/kube-node-lease/default

/registry/serviceaccounts/kube-public/default

/registry/serviceaccounts/kube-system/attachdetach-controller

/registry/serviceaccounts/kube-system/bootstrap-signer

/registry/serviceaccounts/kube-system/certificate-controller

/registry/serviceaccounts/kube-system/clusterrole-aggregation-controller

/registry/serviceaccounts/kube-system/coredns

/registry/serviceaccounts/kube-system/cronjob-controller

/registry/serviceaccounts/kube-system/daemon-set-controller

/registry/serviceaccounts/kube-system/default

/registry/serviceaccounts/kube-system/deployment-controller

/registry/serviceaccounts/kube-system/disruption-controller

/registry/serviceaccounts/kube-system/endpoint-controller

/registry/serviceaccounts/kube-system/endpointslice-controller

/registry/serviceaccounts/kube-system/expand-controller

/registry/serviceaccounts/kube-system/flannel

/registry/serviceaccounts/kube-system/generic-garbage-collector

/registry/serviceaccounts/kube-system/horizontal-pod-autoscaler

/registry/serviceaccounts/kube-system/job-controller

/registry/serviceaccounts/kube-system/kube-proxy

/registry/serviceaccounts/kube-system/namespace-controller

/registry/serviceaccounts/kube-system/node-controller

/registry/serviceaccounts/kube-system/persistent-volume-binder

/registry/serviceaccounts/kube-system/pod-garbage-collector

/registry/serviceaccounts/kube-system/pv-protection-controller

/registry/serviceaccounts/kube-system/pvc-protection-controller

/registry/serviceaccounts/kube-system/replicaset-controller

/registry/serviceaccounts/kube-system/replication-controller

/registry/serviceaccounts/kube-system/resourcequota-controller

/registry/serviceaccounts/kube-system/service-account-controller

/registry/serviceaccounts/kube-system/service-controller

/registry/serviceaccounts/kube-system/statefulset-controller

/registry/serviceaccounts/kube-system/token-cleaner

/registry/serviceaccounts/kube-system/ttl-controller

/registry/serviceaccounts/kubesphere-system/default

/registry/serviceaccounts/kubesphere-system/ks-installer

/registry/services/endpoints/default/kubernetes

/registry/services/endpoints/kube-system/kube-controller-manager

/registry/services/endpoints/kube-system/kube-dns

/registry/services/endpoints/kube-system/kube-scheduler

/registry/services/specs/default/kubernetes

/registry/services/specs/kube-system/kube-dns

/registry/storageclasses/managed-nfs-storage