学习有关Pod对象的相关api调用以及返回json数据格式

api文档：https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.12/#

k8s的api更新很快，注意版本，以1.12为例进行详解：

K8S API概览

资源对象

name	decription
Workloads	Workloads are objects you use to manage and run your containers on the cluster.
Discovery & LB	Discovery & LB resources are objects you use to "stitch" your workloads together into an externally accessible, load-balanced Service.
Config & Storage	Config & Storage resources are objects you use to inject initialization data into your applications, and to persist data that is external to your container.
Cluster	Cluster resources objects define how the cluster itself is configured; these are typically used only by cluster operators.
Metadata	Metadata resources are objects you use to configure the behavior of other resources within the cluster, such as HorizontalPodAutoscaler for scaling workloads.

主要介绍了集群的主要对象以及作用，主要学习Pod, Node等关键对象的API

资源对象的主要组件：

name	decription
Resource ObjectMeta	Resource ObjectMeta: This is metadata about the resource, such as its name, type, api version, annotations, and labels. This contains fields that maybe updated both by the end user and the system (e.g. annotations)
ResourceSpec	ResourceSpec: This is defined by the user and describes the desired state of system. Fill this in when creating or updating an object.
ResourceStatus	ResourceStatus: This is filled in by the server and reports the current state of the system. In most cases, users don't need to change this.

重点是Spec部分，主要介绍了定制资源对象的主要API

资源对象操作：

name	describe
Create	Create operations will create the resource in the storage backend. After a resource is create the system will apply the desired state.
Update	Replace	Replacing a resource object will update the resource by replacing the existing spec with the provided one. For read-then-write operations this is safe because an optimistic lock failure will occur if the resource was modified between the read and write
	Patch	Patch will apply a change to a specific field. How the change is merged is defined per field. Lists may either be replaced or merged. Merging lists will not preserve ordering. Patches will never cause optimistic locking failures, and the last write will win
Read	Get	Get will retrieve a specific resource object by name.
	List	List will retrieve all resource objects of a specific type within a namespace, and the results can be restricted to resources matching a selector query
	Watch	Watch will stream results for an object(s) as it is updated. Similar to a callback, watch is used to respond to resource changes.
Delete	Rollback	Rollback a PodTemplate to a previous version
	Read / Write Scale	Read or Update the number of replicas for the given resource
	Read / Write Status	Read or Update the Status for a resource object.

Pod对象API

与Pod有关的对象类：

这一部分类之间关联关系复杂，以后慢慢研究

给Node节点创建label  kubectl label nodes <node-name> <label-key>=<label-value>
查看labels  kubectl get nodes --show-labels

API调用实例

如图所示，现在default namespace 启动了三个Pod  busybox   centos  tomcat

列出某个命名空间下所有Pod对象：

api/v1/namespaces/default/pods

{"kind":"PodList","apiVersion":"v1","metadata":{"selfLink":"/api/v1/namespaces/default/pods/","resourceVersion":"857561"},"items":[{"metadata":{"name":"busybox-68f48b9c57-887mw","generateName":"busybox-68f48b9c57-","namespace":"default","selfLink":"/api/v1/namespaces/default/pods/busybox-68f48b9c57-887mw","uid":"658c990f-f76e-11e8-953c-a0a33bc4c0eb","resourceVersion":"689769","creationTimestamp":"2018-12-04T02:43:35Z","labels":{"pod-template-hash":"68f48b9c57","run":"busybox"},"ownerReferences":[{"apiVersion":"apps/v1","kind":"ReplicaSet","name":"busybox-68f48b9c57","uid":"d3cfd753-f76d-11e8-953c-a0a33bc4c0eb","controller":true,"blockOwnerDeletion":true}]},"spec":{"volumes":[{"name":"default-token-fw46g","secret":{"secretName":"default-token-fw46g","defaultMode":420}}],"containers":[{"name":"busybox","image":"busybox","args":["/bin/sh"],"resources":{},"volumeMounts":[{"name":"default-token-fw46g","readOnly":true,"mountPath":"/var/run/secrets/kubernetes.io/serviceaccount"}],"terminationMessagePath":"/dev/termination-log","terminationMessagePolicy":"File","imagePullPolicy":"Always","stdin":true,"tty":true}],"restartPolicy":"Always","terminationGracePeriodSeconds":30,"dnsPolicy":"ClusterFirst","serviceAccountName":"default","serviceAccount":"default","nodeName":"ac-private-2","securityContext":{},"schedulerName":"default-scheduler","tolerations":[{"key":"node.kubernetes.io/not-ready","operator":"Exists","effect":"NoExecute","tolerationSeconds":300},{"key":"node.kubernetes.io/unreachable","operator":"Exists","effect":"NoExecute","tolerationSeconds":300}],"priority":0},"status":{"phase":"Running","conditions":[{"type":"Initialized","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-04T02:43:35Z"},{"type":"Ready","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-04T02:47:14Z"},{"type":"ContainersReady","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-04T02:47:14Z"},{"type":"PodScheduled","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-04T02:43:35Z"}],"hostIP":"192.168.1.19","podIP":"10.244.1.85","startTime":"2018-12-04T02:43:35Z","containerStatuses":[{"name":"busybox","state":{"running":{"startedAt":"2018-12-04T02:47:13Z"}},"lastState":{},"ready":true,"restartCount":0,"image":"docker.io/busybox:latest","imageID":"docker-pullable://docker.io/busybox@sha256:2a03a6059f21e150ae84b0973863609494aad70f0a80eaeb64bddd8d92465812","containerID":"docker://710df306fe639930c9646c663714d50d1249b83452e94106fcb4fc6d83cdb50d"}],"qosClass":"BestEffort"}},{"metadata":{"name":"centos-ssh","namespace":"default","selfLink":"/api/v1/namespaces/default/pods/centos-ssh","uid":"79ebcd22-f84e-11e8-953c-a0a33bc4c0eb","resourceVersion":"843562","creationTimestamp":"2018-12-05T05:27:37Z","labels":{"name":"centos-ssh"}},"spec":{"volumes":[{"name":"data","hostPath":{"path":"/dev/sdk","type":""}},{"name":"default-token-fw46g","secret":{"secretName":"default-token-fw46g","defaultMode":420}}],"containers":[{"name":"centos-ssh","image":"docker.io/chenwenkai123456/centos-ssh:v1","command":["/usr/sbin/sshd","-D"],"ports":[{"hostPort":30015,"containerPort":22,"protocol":"TCP"}],"resources":{"limits":{"cpu":"4","memory":"8Gi"},"requests":{"cpu":"2","memory":"4Gi"}},"volumeMounts":[{"name":"data","mountPath":"/data"},{"name":"default-token-fw46g","readOnly":true,"mountPath":"/var/run/secrets/kubernetes.io/serviceaccount"}],"terminationMessagePath":"/dev/termination-log","terminationMessagePolicy":"File","imagePullPolicy":"IfNotPresent"}],"restartPolicy":"Always","terminationGracePeriodSeconds":30,"dnsPolicy":"ClusterFirst","serviceAccountName":"default","serviceAccount":"default","nodeName":"xjs-dn04","securityContext":{},"affinity":{"nodeAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":{"nodeSelectorTerms":[{"matchExpressions":[{"key":"type","operator":"In","values":["node4"]}]}]}}},"schedulerName":"default-scheduler","tolerations":[{"key":"node.kubernetes.io/not-ready","operator":"Exists","effect":"NoExecute","tolerationSeconds":300},{"key":"node.kubernetes.io/unreachable","operator":"Exists","effect":"NoExecute","tolerationSeconds":300}],"priority":0},"status":{"phase":"Running","conditions":[{"type":"Initialized","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:37Z"},{"type":"Ready","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:40Z"},{"type":"ContainersReady","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:40Z"},{"type":"PodScheduled","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:37Z"}],"hostIP":"192.168.1.16","podIP":"10.244.4.21","startTime":"2018-12-05T05:27:37Z","containerStatuses":[{"name":"centos-ssh","state":{"running":{"startedAt":"2018-12-05T05:27:39Z"}},"lastState":{},"ready":true,"restartCount":0,"image":"docker.io/chenwenkai123456/centos-ssh:v1","imageID":"docker-pullable://docker.io/chenwenkai123456/centos-ssh@sha256:ae6b8990ff39d54179443faace89fb2f26605bc76e56d435d2f804da099d7f83","containerID":"docker://6feaa58048bc482ce7e08b4344adae6acec2bd6bcacc563c6140ce26e295e17a"}],"qosClass":"Burstable"}},{"metadata":{"name":"tomcat-t6q74","generateName":"tomcat-","namespace":"default","selfLink":"/api/v1/namespaces/default/pods/tomcat-t6q74","uid":"aacb0cc9-f850-11e8-953c-a0a33bc4c0eb","resourceVersion":"845174","creationTimestamp":"2018-12-05T05:43:18Z","labels":{"app":"tomcat"},"ownerReferences":[{"apiVersion":"v1","kind":"ReplicationController","name":"tomcat","uid":"aac9e59d-f850-11e8-953c-a0a33bc4c0eb","controller":true,"blockOwnerDeletion":true}]},"spec":{"volumes":[{"name":"default-token-fw46g","secret":{"secretName":"default-token-fw46g","defaultMode":420}}],"containers":[{"name":"tomcat","image":"docker.io/tomcat","ports":[{"containerPort":8080,"protocol":"TCP"}],"resources":{},"volumeMounts":[{"name":"default-token-fw46g","readOnly":true,"mountPath":"/var/run/secrets/kubernetes.io/serviceaccount"}],"terminationMessagePath":"/dev/termination-log","terminationMessagePolicy":"File","imagePullPolicy":"Always"}],"restartPolicy":"Always","terminationGracePeriodSeconds":30,"dnsPolicy":"ClusterFirst","serviceAccountName":"default","serviceAccount":"default","nodeName":"ac-private-2","securityContext":{},"affinity":{"nodeAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":{"nodeSelectorTerms":[{"matchExpressions":[{"key":"type","operator":"In","values":["node1"]}]}]}}},"schedulerName":"default-scheduler","tolerations":[{"key":"node.kubernetes.io/not-ready","operator":"Exists","effect":"NoExecute","tolerationSeconds":300},{"key":"node.kubernetes.io/unreachable","operator":"Exists","effect":"NoExecute","tolerationSeconds":300}],"priority":0},"status":{"phase":"Running","conditions":[{"type":"Initialized","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:43:18Z"},{"type":"Ready","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:43:56Z"},{"type":"ContainersReady","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:43:56Z"},{"type":"PodScheduled","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:43:18Z"}],"hostIP":"192.168.1.19","podIP":"10.244.1.86","startTime":"2018-12-05T05:43:18Z","containerStatuses":[{"name":"tomcat","state":{"running":{"startedAt":"2018-12-05T05:43:56Z"}},"lastState":{},"ready":true,"restartCount":0,"image":"docker.io/tomcat:latest","imageID":"docker-pullable://docker.io/tomcat@sha256:e394c2f94eee344300e68d7183f3f19d272316f9691b280ac0e3911ea610e590","containerID":"docker://1b5cc80c30d58942d1e6431a156f3a58cd00293dcac0025ec6fc84f474d26050"}],"qosClass":"BestEffort"}}]}

获取某个Pod对象的信息：

api/v1/namespaces/default/pods/centos-ssh

{"kind":"Pod","apiVersion":"v1","metadata":{"name":"centos-ssh","namespace":"default","selfLink":"/api/v1/namespaces/default/pods/centos-ssh","uid":"79ebcd22-f84e-11e8-953c-a0a33bc4c0eb","resourceVersion":"843562","creationTimestamp":"2018-12-05T05:27:37Z","labels":{"name":"centos-ssh"}},"spec":{"volumes":[{"name":"data","hostPath":{"path":"/dev/sdk","type":""}},{"name":"default-token-fw46g","secret":{"secretName":"default-token-fw46g","defaultMode":420}}],"containers":[{"name":"centos-ssh","image":"docker.io/chenwenkai123456/centos-ssh:v1","command":["/usr/sbin/sshd","-D"],"ports":[{"hostPort":30015,"containerPort":22,"protocol":"TCP"}],"resources":{"limits":{"cpu":"4","memory":"8Gi"},"requests":{"cpu":"2","memory":"4Gi"}},"volumeMounts":[{"name":"data","mountPath":"/data"},{"name":"default-token-fw46g","readOnly":true,"mountPath":"/var/run/secrets/kubernetes.io/serviceaccount"}],"terminationMessagePath":"/dev/termination-log","terminationMessagePolicy":"File","imagePullPolicy":"IfNotPresent"}],"restartPolicy":"Always","terminationGracePeriodSeconds":30,"dnsPolicy":"ClusterFirst","serviceAccountName":"default","serviceAccount":"default","nodeName":"xjs-dn04","securityContext":{},"affinity":{"nodeAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":{"nodeSelectorTerms":[{"matchExpressions":[{"key":"type","operator":"In","values":["node4"]}]}]}}},"schedulerName":"default-scheduler","tolerations":[{"key":"node.kubernetes.io/not-ready","operator":"Exists","effect":"NoExecute","tolerationSeconds":300},{"key":"node.kubernetes.io/unreachable","operator":"Exists","effect":"NoExecute","tolerationSeconds":300}],"priority":0},"status":{"phase":"Running","conditions":[{"type":"Initialized","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:37Z"},{"type":"Ready","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:40Z"},{"type":"ContainersReady","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:40Z"},{"type":"PodScheduled","status":"True","lastProbeTime":null,"lastTransitionTime":"2018-12-05T05:27:37Z"}],"hostIP":"192.168.1.16","podIP":"10.244.4.21","startTime":"2018-12-05T05:27:37Z","containerStatuses":[{"name":"centos-ssh","state":{"running":{"startedAt":"2018-12-05T05:27:39Z"}},"lastState":{},"ready":true,"restartCount":0,"image":"docker.io/chenwenkai123456/centos-ssh:v1","imageID":"docker-pullable://docker.io/chenwenkai123456/centos-ssh@sha256:ae6b8990ff39d54179443faace89fb2f26605bc76e56d435d2f804da099d7f83","containerID":"docker://6feaa58048bc482ce7e08b4344adae6acec2bd6bcacc563c6140ce26e295e17a"}],"qosClass":"Burstable"}}

获取所有Node物理节点列表：

api/v1/nodes

{"kind":"NodeList","apiVersion":"v1","metadata":{"selfLink":"/api/v1/nodes","resourceVersion":"857998"},"items":[{"metadata":{"name":"ac-private-0","selfLink":"/api/v1/nodes/ac-private-0","uid":"7f4e158c-f399-11e8-953c-a0a33bc4c0eb","resourceVersion":"857991","creationTimestamp":"2018-11-29T05:42:02Z","labels":{"beta.kubernetes.io/arch":"amd64","beta.kubernetes.io/os":"linux","kubernetes.io/hostname":"ac-private-0","type":"node2"},"annotations":{"flannel.alpha.coreos.com/backend-data":"{\"VtepMAC\":\"ea:fa:d4:6d:e1:e3\"}","flannel.alpha.coreos.com/backend-type":"vxlan","flannel.alpha.coreos.com/kube-subnet-manager":"true","flannel.alpha.coreos.com/public-ip":"192.168.1.18","kubeadm.alpha.kubernetes.io/cri-socket":"/var/run/dockershim.sock","node.alpha.kubernetes.io/ttl":"0","volumes.kubernetes.io/controller-managed-attach-detach":"true"}},"spec":{"podCIDR":"10.244.2.0/24"},"status":{"capacity":{"cpu":"32","ephemeral-storage":"211338860Ki","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131455684Ki","pods":"110"},"allocatable":{"cpu":"32","ephemeral-storage":"194769893054","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131353284Ki","pods":"110"},"conditions":[{"type":"OutOfDisk","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletHasSufficientDisk","message":"kubelet has sufficient disk space available"},{"type":"MemoryPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletHasSufficientMemory","message":"kubelet has sufficient memory available"},{"type":"DiskPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletHasNoDiskPressure","message":"kubelet has no disk pressure"},{"type":"PIDPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T05:42:02Z","reason":"KubeletHasSufficientPID","message":"kubelet has sufficient PID available"},{"type":"Ready","status":"True","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletReady","message":"kubelet is posting ready status"}],"addresses":[{"type":"InternalIP","address":"192.168.1.18"},{"type":"Hostname","address":"ac-private-0"}],"daemonEndpoints":{"kubeletEndpoint":{"Port":10250}},"nodeInfo":{"machineID":"802b88242a474039b190efc9ce1e95c0","systemUUID":"F65FD9B1-2C7C-E711-8E6A-BC3F8F8906EF","bootID":"bd8e7ee1-4be5-4d22-8d99-9eeb2845ea3c","kernelVersion":"3.10.0-327.el7.x86_64","osImage":"CentOS Linux 7 (Core)","containerRuntimeVersion":"docker://1.13.1","kubeletVersion":"v1.12.3","kubeProxyVersion":"v1.12.3","operatingSystem":"linux","architecture":"amd64"},"images":[{"names":["docker.io/tomcat@sha256:e394c2f94eee344300e68d7183f3f19d272316f9691b280ac0e3911ea610e590","docker.io/tomcat:latest"],"sizeBytes":462725827},{"names":["docker.io/chenwenkai123456/centos-ssh@sha256:ae6b8990ff39d54179443faace89fb2f26605bc76e56d435d2f804da099d7f83","docker.io/chenwenkai123456/centos-ssh:v1"],"sizeBytes":305338283},{"names":["k8s.gcr.io/kube-apiserver:v1.12.0-rc.1"],"sizeBytes":193937288},{"names":["k8s.gcr.io/etcd:3.2.24"],"sizeBytes":193214599},{"names":["k8s.gcr.io/kube-controller-manager:v1.12.0-rc.1"],"sizeBytes":164993346},{"names":["k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0"],"sizeBytes":122460923},{"names":["k8s.gcr.io/kube-proxy:v1.12.0-rc.1"],"sizeBytes":96583047},{"names":["k8s.gcr.io/kube-scheduler:v1.12.0-rc.1"],"sizeBytes":58295858},{"names":["quay.io/coreos/flannel@sha256:056cf57fd3bbe7264c0be1a3b34ec2e289b33e51c70f332f4e88aa83970ad891","quay.io/coreos/flannel:v0.9.1-amd64"],"sizeBytes":51338831},{"names":["docker.io/keveon/k8s-dns-kube-dns-amd64@sha256:6d8e0da4fb46e9ea2034a3f4cab0e095618a2ead78720c12e791342738e5f85d","docker.io/keveon/k8s-dns-kube-dns-amd64:1.14.8"],"sizeBytes":50456751},{"names":["docker.io/keveon/k8s-dns-sidecar-amd64@sha256:23df717980b4aa08d2da6c4cfa327f1b730d92ec9cf740959d2d5911830d82fb","docker.io/keveon/k8s-dns-sidecar-amd64:1.14.8"],"sizeBytes":42210862},{"names":["docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64@sha256:93c827f018cf3322f1ff2aa80324a0306048b0a69bc274e423071fb0d2d29d8b","docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64:1.14.8"],"sizeBytes":40951779},{"names":["k8s.gcr.io/coredns:1.2.2"],"sizeBytes":39220458},{"names":["docker.io/busybox@sha256:2a03a6059f21e150ae84b0973863609494aad70f0a80eaeb64bddd8d92465812","docker.io/busybox:latest"],"sizeBytes":1154353},{"names":["k8s.gcr.io/pause:3.1"],"sizeBytes":742472}]}},{"metadata":{"name":"ac-private-1","selfLink":"/api/v1/nodes/ac-private-1","uid":"af3aa33b-f385-11e8-953c-a0a33bc4c0eb","resourceVersion":"857988","creationTimestamp":"2018-11-29T03:20:13Z","labels":{"beta.kubernetes.io/arch":"amd64","beta.kubernetes.io/os":"linux","kubernetes.io/hostname":"ac-private-1","node-role.kubernetes.io/master":"","type":"master"},"annotations":{"flannel.alpha.coreos.com/backend-data":"{\"VtepMAC\":\"22:67:2b:9d:c5:46\"}","flannel.alpha.coreos.com/backend-type":"vxlan","flannel.alpha.coreos.com/kube-subnet-manager":"true","flannel.alpha.coreos.com/public-ip":"192.168.1.15","kubeadm.alpha.kubernetes.io/cri-socket":"/var/run/dockershim.sock","node.alpha.kubernetes.io/ttl":"0","volumes.kubernetes.io/controller-managed-attach-detach":"true"}},"spec":{"podCIDR":"10.244.0.0/24","taints":[{"key":"node-role.kubernetes.io/master","effect":"NoSchedule"}]},"status":{"capacity":{"cpu":"32","ephemeral-storage":"211338860Ki","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131455684Ki","pods":"110"},"allocatable":{"cpu":"32","ephemeral-storage":"194769893054","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131353284Ki","pods":"110"},"conditions":[{"type":"OutOfDisk","status":"False","lastHeartbeatTime":"2018-12-05T07:57:15Z","lastTransitionTime":"2018-11-29T03:20:03Z","reason":"KubeletHasSufficientDisk","message":"kubelet has sufficient disk space available"},{"type":"MemoryPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:15Z","lastTransitionTime":"2018-11-29T03:20:03Z","reason":"KubeletHasSufficientMemory","message":"kubelet has sufficient memory available"},{"type":"DiskPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:15Z","lastTransitionTime":"2018-11-29T03:20:03Z","reason":"KubeletHasNoDiskPressure","message":"kubelet has no disk pressure"},{"type":"PIDPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:15Z","lastTransitionTime":"2018-11-29T03:20:03Z","reason":"KubeletHasSufficientPID","message":"kubelet has sufficient PID available"},{"type":"Ready","status":"True","lastHeartbeatTime":"2018-12-05T07:57:15Z","lastTransitionTime":"2018-11-29T03:32:23Z","reason":"KubeletReady","message":"kubelet is posting ready status"}],"addresses":[{"type":"InternalIP","address":"192.168.1.15"},{"type":"Hostname","address":"ac-private-1"}],"daemonEndpoints":{"kubeletEndpoint":{"Port":10250}},"nodeInfo":{"machineID":"b2df1d64f0744a5e8296ca5dac633f5d","systemUUID":"68BCF705-2D7C-E711-8CB0-BC3F8F8905AE","bootID":"7fe0bed5-dc91-4a68-bc6f-225b5970cdae","kernelVersion":"3.10.0-327.el7.x86_64","osImage":"CentOS Linux 7 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has sufficient disk space available"},{"type":"MemoryPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T05:19:47Z","reason":"KubeletHasSufficientMemory","message":"kubelet has sufficient memory available"},{"type":"DiskPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T05:19:47Z","reason":"KubeletHasNoDiskPressure","message":"kubelet has no disk pressure"},{"type":"PIDPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T05:19:47Z","reason":"KubeletHasSufficientPID","message":"kubelet has sufficient PID available"},{"type":"Ready","status":"True","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T05:19:47Z","reason":"KubeletReady","message":"kubelet is posting ready status"}],"addresses":[{"type":"InternalIP","address":"192.168.1.19"},{"type":"Hostname","address":"ac-private-2"}],"daemonEndpoints":{"kubeletEndpoint":{"Port":10250}},"nodeInfo":{"machineID":"68c868b5739149b0bd014cd97cf7342f","systemUUID":"EEAFC7F8-2C7C-E711-B736-BC3F8F8906B3","bootID":"1bf420f2-b895-4130-9f9c-4c6577bc63f5","kernelVersion":"3.10.0-327.el7.x86_64","osImage":"CentOS Linux 7 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has sufficient disk space available"},{"type":"MemoryPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T06:28:46Z","reason":"KubeletHasSufficientMemory","message":"kubelet has sufficient memory available"},{"type":"DiskPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T06:28:46Z","reason":"KubeletHasNoDiskPressure","message":"kubelet has no disk pressure"},{"type":"PIDPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T06:28:46Z","reason":"KubeletHasSufficientPID","message":"kubelet has sufficient PID available"},{"type":"Ready","status":"True","lastHeartbeatTime":"2018-12-05T07:57:14Z","lastTransitionTime":"2018-11-29T06:28:46Z","reason":"KubeletReady","message":"kubelet is posting ready status"}],"addresses":[{"type":"InternalIP","address":"192.168.1.14"},{"type":"Hostname","address":"xjs-dn02"}],"daemonEndpoints":{"kubeletEndpoint":{"Port":10250}},"nodeInfo":{"machineID":"a5a773f762db43c4ab3296e99cdcaa1d","systemUUID":"74D10CDA-2C7C-E711-903E-BC3F8F8905AB","bootID":"78410d78-b362-4f5b-a77c-2e3799dc6fbd","kernelVersion":"3.10.0-327.el7.x86_64","osImage":"CentOS Linux 7 (Core)","containerRuntimeVersion":"docker://1.13.1","kubeletVersion":"v1.12.3","kubeProxyVersion":"v1.12.3","operatingSystem":"linux","architecture":"amd64"},"images":[{"names":["docker.io/chenwenkai123456/centos-ssh@sha256:ae6b8990ff39d54179443faace89fb2f26605bc76e56d435d2f804da099d7f83","docker.io/chenwenkai123456/centos-ssh:v1"],"sizeBytes":305338283},{"names":["k8s.gcr.io/kube-apiserver:v1.12.0-rc.1"],"sizeBytes":193937288},{"names":["k8s.gcr.io/etcd:3.2.24"],"sizeBytes":193214599},{"names":["k8s.gcr.io/kube-controller-manager:v1.12.0-rc.1"],"sizeBytes":164993346},{"names":["k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0"],"sizeBytes":122460923},{"names":["k8s.gcr.io/kube-proxy:v1.12.0-rc.1"],"sizeBytes":96583047},{"names":["k8s.gcr.io/kube-scheduler:v1.12.0-rc.1"],"sizeBytes":58295858},{"names":["quay.io/coreos/flannel@sha256:056cf57fd3bbe7264c0be1a3b34ec2e289b33e51c70f332f4e88aa83970ad891","quay.io/coreos/flannel:v0.9.1-amd64"],"sizeBytes":51338831},{"names":["docker.io/keveon/k8s-dns-kube-dns-amd64@sha256:6d8e0da4fb46e9ea2034a3f4cab0e095618a2ead78720c12e791342738e5f85d","docker.io/keveon/k8s-dns-kube-dns-amd64:1.14.8"],"sizeBytes":50456751},{"names":["docker.io/keveon/k8s-dns-sidecar-amd64@sha256:23df717980b4aa08d2da6c4cfa327f1b730d92ec9cf740959d2d5911830d82fb","docker.io/keveon/k8s-dns-sidecar-amd64:1.14.8"],"sizeBytes":42210862},{"names":["docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64@sha256:93c827f018cf3322f1ff2aa80324a0306048b0a69bc274e423071fb0d2d29d8b","docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64:1.14.8"],"sizeBytes":40951779},{"names":["k8s.gcr.io/coredns:1.2.2"],"sizeBytes":39220458},{"names":["k8s.gcr.io/pause:3.1"],"sizeBytes":742472}]}},{"metadata":{"name":"xjs-dn04","selfLink":"/api/v1/nodes/xjs-dn04","uid":"6b3bef8a-f3a0-11e8-953c-a0a33bc4c0eb","resourceVersion":"857992","creationTimestamp":"2018-11-29T06:31:35Z","labels":{"beta.kubernetes.io/arch":"amd64","beta.kubernetes.io/os":"linux","kubernetes.io/hostname":"xjs-dn04","type":"node4"},"annotations":{"flannel.alpha.coreos.com/backend-data":"{\"VtepMAC\":\"3a:8d:17:87:97:12\"}","flannel.alpha.coreos.com/backend-type":"vxlan","flannel.alpha.coreos.com/kube-subnet-manager":"true","flannel.alpha.coreos.com/public-ip":"192.168.1.16","kubeadm.alpha.kubernetes.io/cri-socket":"/var/run/dockershim.sock","node.alpha.kubernetes.io/ttl":"0","volumes.kubernetes.io/controller-managed-attach-detach":"true"}},"spec":{"podCIDR":"10.244.4.0/24"},"status":{"capacity":{"cpu":"32","ephemeral-storage":"211338860Ki","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131455684Ki","pods":"110"},"allocatable":{"cpu":"32","ephemeral-storage":"194769893054","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131353284Ki","pods":"110"},"conditions":[{"type":"OutOfDisk","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T06:31:35Z","reason":"KubeletHasSufficientDisk","message":"kubelet has sufficient disk space available"},{"type":"MemoryPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T06:31:35Z","reason":"KubeletHasSufficientMemory","message":"kubelet has sufficient memory available"},{"type":"DiskPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T06:31:35Z","reason":"KubeletHasNoDiskPressure","message":"kubelet has no disk pressure"},{"type":"PIDPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T06:31:35Z","reason":"KubeletHasSufficientPID","message":"kubelet has sufficient PID available"},{"type":"Ready","status":"True","lastHeartbeatTime":"2018-12-05T07:57:19Z","lastTransitionTime":"2018-11-29T06:31:35Z","reason":"KubeletReady","message":"kubelet is posting ready status"}],"addresses":[{"type":"InternalIP","address":"192.168.1.16"},{"type":"Hostname","address":"xjs-dn04"}],"daemonEndpoints":{"kubeletEndpoint":{"Port":10250}},"nodeInfo":{"machineID":"b993a6bb441c48d395be6d805102b997","systemUUID":"7CD61657-2A7C-E711-9805-BC3F8F8905B1","bootID":"0c53ce4d-eda0-43e6-9e4c-0cd81a52d866","kernelVersion":"3.10.0-327.el7.x86_64","osImage":"CentOS Linux 7 (Core)","containerRuntimeVersion":"docker://1.13.1","kubeletVersion":"v1.12.3","kubeProxyVersion":"v1.12.3","operatingSystem":"linux","architecture":"amd64"},"images":[{"names":["docker.io/kinogmt/centos-ssh@sha256:acdf7798259f859a8e713f2f88511eef5e0f94cb2d2dec078a1fe169a8aacf63","docker.io/kinogmt/centos-ssh:latest"],"sizeBytes":773130464},{"names":["docker.io/chenwenkai123456/centos-ssh@sha256:ae6b8990ff39d54179443faace89fb2f26605bc76e56d435d2f804da099d7f83","docker.io/chenwenkai123456/centos-ssh:v1"],"sizeBytes":305338283},{"names":["docker.io/zerosre/gcr.io-google_containers-heapster_grafana-v3.1.1@sha256:94dfb1fc71792cf3dd8277ac60f306f4b54ff2c6c3996f1fd5bd93439671db5b","docker.io/zerosre/gcr.io-google_containers-heapster_grafana-v3.1.1:latest"],"sizeBytes":279315095},{"names":["docker.io/centos@sha256:67dad89757a55bfdfabec8abd0e22f8c7c12a1856514726470228063ed86593b","docker.io/centos:latest"],"sizeBytes":200375261},{"names":["k8s.gcr.io/kube-apiserver:v1.12.0-rc.1"],"sizeBytes":193937288},{"names":["k8s.gcr.io/etcd:3.2.24"],"sizeBytes":193214599},{"names":["k8s.gcr.io/kube-controller-manager:v1.12.0-rc.1"],"sizeBytes":164993346},{"names":["k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0"],"sizeBytes":122460923},{"names":["k8s.gcr.io/kube-proxy:v1.12.0-rc.1"],"sizeBytes":96583047},{"names":["k8s.gcr.io/kube-scheduler:v1.12.0-rc.1"],"sizeBytes":58295858},{"names":["quay.io/coreos/flannel@sha256:056cf57fd3bbe7264c0be1a3b34ec2e289b33e51c70f332f4e88aa83970ad891","quay.io/coreos/flannel:v0.9.1-amd64"],"sizeBytes":51338831},{"names":["docker.io/keveon/k8s-dns-kube-dns-amd64@sha256:6d8e0da4fb46e9ea2034a3f4cab0e095618a2ead78720c12e791342738e5f85d","docker.io/keveon/k8s-dns-kube-dns-amd64:1.14.8"],"sizeBytes":50456751},{"names":["docker.io/keveon/k8s-dns-sidecar-amd64@sha256:23df717980b4aa08d2da6c4cfa327f1b730d92ec9cf740959d2d5911830d82fb","docker.io/keveon/k8s-dns-sidecar-amd64:1.14.8"],"sizeBytes":42210862},{"names":["docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64@sha256:93c827f018cf3322f1ff2aa80324a0306048b0a69bc274e423071fb0d2d29d8b","docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64:1.14.8"],"sizeBytes":40951779},{"names":["k8s.gcr.io/coredns:1.2.2"],"sizeBytes":39220458},{"names":["k8s.gcr.io/pause:3.1"],"sizeBytes":742472}]}}]}

获取某个Node节点物理列表：

api/v1/nodes/ac-private-0

{"kind":"Node","apiVersion":"v1","metadata":{"name":"ac-private-0","selfLink":"/api/v1/nodes/ac-private-0","uid":"7f4e158c-f399-11e8-953c-a0a33bc4c0eb","resourceVersion":"858215","creationTimestamp":"2018-11-29T05:42:02Z","labels":{"beta.kubernetes.io/arch":"amd64","beta.kubernetes.io/os":"linux","kubernetes.io/hostname":"ac-private-0","type":"node2"},"annotations":{"flannel.alpha.coreos.com/backend-data":"{\"VtepMAC\":\"ea:fa:d4:6d:e1:e3\"}","flannel.alpha.coreos.com/backend-type":"vxlan","flannel.alpha.coreos.com/kube-subnet-manager":"true","flannel.alpha.coreos.com/public-ip":"192.168.1.18","kubeadm.alpha.kubernetes.io/cri-socket":"/var/run/dockershim.sock","node.alpha.kubernetes.io/ttl":"0","volumes.kubernetes.io/controller-managed-attach-detach":"true"}},"spec":{"podCIDR":"10.244.2.0/24"},"status":{"capacity":{"cpu":"32","ephemeral-storage":"211338860Ki","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131455684Ki","pods":"110"},"allocatable":{"cpu":"32","ephemeral-storage":"194769893054","hugepages-1Gi":"0","hugepages-2Mi":"0","memory":"131353284Ki","pods":"110"},"conditions":[{"type":"OutOfDisk","status":"False","lastHeartbeatTime":"2018-12-05T07:59:39Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletHasSufficientDisk","message":"kubelet has sufficient disk space available"},{"type":"MemoryPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:59:39Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletHasSufficientMemory","message":"kubelet has sufficient memory available"},{"type":"DiskPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:59:39Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletHasNoDiskPressure","message":"kubelet has no disk pressure"},{"type":"PIDPressure","status":"False","lastHeartbeatTime":"2018-12-05T07:59:39Z","lastTransitionTime":"2018-11-29T05:42:02Z","reason":"KubeletHasSufficientPID","message":"kubelet has sufficient PID available"},{"type":"Ready","status":"True","lastHeartbeatTime":"2018-12-05T07:59:39Z","lastTransitionTime":"2018-11-29T05:55:48Z","reason":"KubeletReady","message":"kubelet is posting ready status"}],"addresses":[{"type":"InternalIP","address":"192.168.1.18"},{"type":"Hostname","address":"ac-private-0"}],"daemonEndpoints":{"kubeletEndpoint":{"Port":10250}},"nodeInfo":{"machineID":"802b88242a474039b190efc9ce1e95c0","systemUUID":"F65FD9B1-2C7C-E711-8E6A-BC3F8F8906EF","bootID":"bd8e7ee1-4be5-4d22-8d99-9eeb2845ea3c","kernelVersion":"3.10.0-327.el7.x86_64","osImage":"CentOS Linux 7 (Core)","containerRuntimeVersion":"docker://1.13.1","kubeletVersion":"v1.12.3","kubeProxyVersion":"v1.12.3","operatingSystem":"linux","architecture":"amd64"},"images":[{"names":["docker.io/tomcat@sha256:e394c2f94eee344300e68d7183f3f19d272316f9691b280ac0e3911ea610e590","docker.io/tomcat:latest"],"sizeBytes":462725827},{"names":["docker.io/chenwenkai123456/centos-ssh@sha256:ae6b8990ff39d54179443faace89fb2f26605bc76e56d435d2f804da099d7f83","docker.io/chenwenkai123456/centos-ssh:v1"],"sizeBytes":305338283},{"names":["k8s.gcr.io/kube-apiserver:v1.12.0-rc.1"],"sizeBytes":193937288},{"names":["k8s.gcr.io/etcd:3.2.24"],"sizeBytes":193214599},{"names":["k8s.gcr.io/kube-controller-manager:v1.12.0-rc.1"],"sizeBytes":164993346},{"names":["k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.0"],"sizeBytes":122460923},{"names":["k8s.gcr.io/kube-proxy:v1.12.0-rc.1"],"sizeBytes":96583047},{"names":["k8s.gcr.io/kube-scheduler:v1.12.0-rc.1"],"sizeBytes":58295858},{"names":["quay.io/coreos/flannel@sha256:056cf57fd3bbe7264c0be1a3b34ec2e289b33e51c70f332f4e88aa83970ad891","quay.io/coreos/flannel:v0.9.1-amd64"],"sizeBytes":51338831},{"names":["docker.io/keveon/k8s-dns-kube-dns-amd64@sha256:6d8e0da4fb46e9ea2034a3f4cab0e095618a2ead78720c12e791342738e5f85d","docker.io/keveon/k8s-dns-kube-dns-amd64:1.14.8"],"sizeBytes":50456751},{"names":["docker.io/keveon/k8s-dns-sidecar-amd64@sha256:23df717980b4aa08d2da6c4cfa327f1b730d92ec9cf740959d2d5911830d82fb","docker.io/keveon/k8s-dns-sidecar-amd64:1.14.8"],"sizeBytes":42210862},{"names":["docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64@sha256:93c827f018cf3322f1ff2aa80324a0306048b0a69bc274e423071fb0d2d29d8b","docker.io/keveon/k8s-dns-dnsmasq-nanny-amd64:1.14.8"],"sizeBytes":40951779},{"names":["k8s.gcr.io/coredns:1.2.2"],"sizeBytes":39220458},{"names":["docker.io/busybox@sha256:2a03a6059f21e150ae84b0973863609494aad70f0a80eaeb64bddd8d92465812","docker.io/busybox:latest"],"sizeBytes":1154353},{"names":["k8s.gcr.io/pause:3.1"],"sizeBytes":742472}]}}

可以获取到该物理节点的内存以及cpu资源信息。