Python使用Kubernetes API访问集群

# 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 API
curl -X GET $APISERVER/api --header \"Authorization: Bearer $TOKEN\" --insecure

from kubernetes import  client,config
from kubernetes.stream import stream
import yaml
config_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namesapce
for ns in Api_Instance.list_namespace().items:
    print(ns.metadata.name)

#列出所有的nodes
def 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 data
nodes = list_node()
print(nodes)

# -*- coding: utf-8 -*-
from kubernetes.client import api_client
from kubernetes.client.apis import core_v1_api
from kubernetes import client,config


class 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)