通过将身份认证令牌直接传给 api 服务器，可以避免使用 kubectl 代理，像这样：
使用 grep/cut 方式：
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# 查看所有的集群，因为你的 .kubeconfig 文件中可能包含多个上下文kubectl config view -o jsonpath='{"cluster name\tserver\n"}{range .clusters[*]}{.name}{"\t"}{.cluster.server}{"\n"}{end}'# 从上述命令输出中选择你要与之交互的集群的名称export cluster_name="some_server_name"# 指向引用该集群名称的 api 服务器apiserver=$(kubectl config view -o jsonpath="{.clusters[?(@.name==\"$cluster_name\")].cluster.server}")# 获得令牌token=$(kubectl get secrets -o jsonpath="{.items[?(@.metadata.annotations['kubernetes\.io/service-account\.name']=='default')].data.token}"|base64 -d)# 使用令牌玩转 apicurl -x get $apiserver/api --header "authorization: bearer $token" --insecure |
客户端库：https://kubernetes.io/zh/docs/reference/using-api/client-libraries/
python举例：
目录结构
配置文件两种方式
1、将集群中的~/.kube/config,重命名为kubeconfig.yaml
代码：
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from kubernetes import client,configfrom kubernetes.stream import streamimport yamlconfig_file = r"d:\users\jackhe\pycharmprojects\jj\k8s\auth\kubeconfig.yaml"config.kube_config.load_kube_config(config_file=config_file)api_instance = client.corev1api()api_batch = client.batchv1api()#列出所有的namesapcefor ns in api_instance.list_namespace().items: print(ns.metadata.name)#列出所有的nodesdef list_node(): api_response = api_instance.list_node() data = {} for i in api_response.items: data[i.metadata.name] = {"name": i.metadata.name, "status": i.status.conditions[-1].type if i.status.conditions[-1].status == "true" else "notready", "ip": i.status.addresses[0].address, "kubelet_version": i.status.node_info.kubelet_version, "os_image": i.status.node_info.os_image, } return datanodes = list_node()print(nodes) |
2、使用token形式，获取命令上文所示。
代码：
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# -*- coding: utf-8 -*-from kubernetes.client import api_clientfrom kubernetes.client.apis import core_v1_apifrom kubernetes import client,configclass kubernetestools(object): def __init__(self): self.k8s_url = 'https://192.168.1.56:6443' def get_token(self): """ 获取token :return: """ with open(r'd:\users\jackhe\pycharmprojects\jj\k8s\auth\token', 'r') as file: token = file.read().strip('\n') return token def get_api(self): """ 获取api的corev1api版本对象 :return: """ configuration = client.configuration() configuration.host = self.k8s_url configuration.verify_ssl = false configuration.api_key = {"authorization": "bearer " + self.get_token()} client1 = api_client.apiclient(configuration=configuration) api = core_v1_api.corev1api(client1) return api def get_namespace_list(self): """ 获取命名空间列表 :return: """ api = self.get_api() namespace_list = [] for ns in api.list_namespace().items: # print(ns.metadata.name) namespace_list.append(ns.metadata.name) return namespace_list def get_pod_list(self): api = self.get_api() print("listing pods with their ips:") ret = api.list_pod_for_all_namespaces(watch=false) for i in ret.items: print("%s\t%s\t%s" % (i.status.pod_ip, i.metadata.namespace, i.metadata.name)) def get_service_list(self): api = self.get_api() ret = api.list_service_for_all_namespaces(watch=false) for i in ret.items: print("%s \t%s \t%s \t%s \t%s \n" %(i.kind,i.metadata.namespace,i.metadata.name,i.spec.cluster_ip,i.spec.ports))if __name__ == '__main__': namespace_list = kubernetestools().get_namespace_list() pod_list = kubernetestools().get_pod_list() service = kubernetestools().get_service_list() print(namespace_list) print(pod_list) print(service) |
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原文链接：https://www.cnblogs.com/Dev0ps/p/14825543.html
