python+k8s——基础练习

列表

core_api = client.CoreV1Api()  # 管理核心资源（Pod, Service, ConfigMap 等）
apps_api = client.AppsV1Api()  # 管理应用资源（Deployment, StatefulSet, DaemonSet 等）
batch_api = client.BatchV1Api()  # 管理批处理任务资源（Job, CronJob）
rbac_api = client.RbacAuthorizationV1Api()  # 管理角色和权限绑定资源
networking_api = client.NetworkingV1Api()  # 管理网络资源（Ingress, NetworkPolicy）
custom_objects_api = client.CustomObjectsApi()  # 管理自定义资源（CRD）

查看所有的命名空间
from kubernetes import client,config
config.kube_config.load_kube_config(config_file='C:/Users/4407/Desktop/config')

v1 = client.CoreV1Api()

for namespace in v1.list_namespace().items:
    print(namespace.metadata.name)



查看pod的名字
from kubernetes import client,config
config.kube_config.load_kube_config('C:/Users/4407/Desktop/config')

v1 = client.CoreV1Api()

for pod in v1.list_pod_for_all_namespaces().items:
    print(pod.metadata.name)







基本操作

# 对于查看pod  分为 查看指定名称空间里的pod   查看指定标签的pod 查看pod的状态
import kubernetes.config
from kubernetes import client, config
kubernetes.config.kube_config.load_kube_config('C:\\Users\\4407\\Desktop\\config')
core_v1 = kubernetes.client.CoreV1Api()
ns = 'ingress-nginx'
a = core_v1.list_namespaced_service(namespace=ns)
for i in a.items:
    print(i)



import kubernetes.config
from kubernetes import client, config
# 加载 Kubernetes 配置
kubernetes.config.kube_config.load_kube_config('C:\\Users\\4407\\Desktop\\config')
# 实例化 CoreV1Api 类
core_v1 = kubernetes.client.CoreV1Api()
# 指定命名空间
namespace = 'ingress-nginx'
# 获取指定命名空间下的所有服务
service_list = core_v1.list_namespaced_service(namespace=namespace)
# 遍历服务列表并打印每个服务的名字
for service in service_list.items:
    print(service.metadata.name)
# 遍历服务列表并打印每个服务的名字
for service in service_list.items:
    print('hhhhh' + service.metadata.name)


# 查看pod的名字

from kubernetes import client, config

config.kube_config.load_kube_config('C:\\Users\\4407\\Desktop\\config')

ret = client.CoreV1Api()
a = ret.list_namespaced_pod('dev')

for i in ret.list_namespaced_pod('dev').items:
    print(i.metadata.name)

# 不可以写成 for i in ret.list_namespaced_pod.items('dev'):



创建pod
from kubernetes import client,config
config.load_kube_config('C:\\Users\\4407\\Desktop\\config')

pod = client.V1Pod(metadata=client.V1ObjectMeta(name="my-test01"),
                   spec=client.V1PodSpec(containers=[
                    client.V1Container(
                        name="my-test",
                        ports=[client.V1ContainerPort(name="nginx", container_port=8088, host_port=8088)],
                        image="centos"
                    )
                   ]
                )
)

ret = client.CoreV1Api()

try:
    a = ret.create_namespaced_pod("dev", pod)
    print("pod create sussess , pod status is '%s' " % str(a.status))

except Exception as e:
    print("pod create error and status is '%s'" %e)









pod = client.V1Pod(
    metadata=client.V1ObjectMeta(name="my-pod"),
    spec=client.V1PodSpec(
        containers=[
            client.V1Container(
                name="my-container",
                image="nginx",
                ports=[client.V1ContainerPort(container_port=80)]
            )
        ]
    )
)

ret = client.CoreV1Api()
ns = "dev"

try:
    api_response = ret.create_namespaced_pod(ns, pod)
    print("Pod created. Status='%s'" % str(api_response.status))
except Exception as e:
    print("Error: %s" % e)




# 创建deployment
from kubernetes import config,client
config.kube_config.load_kube_config(r"C:\Users\4407\Desktop\yun\config")
deploy = client.V1Deployment(
    metadata=client.V1ObjectMeta(
        name="my-pod",
        namespace="default"),
    spec=client.V1DeploymentSpec(
        replicas=1,
        selector=client.V1LabelSelector(
            match_labels={
                "app": "nginx"
            }
        ),
        template=client.V1PodTemplateSpec(
            metadata=client.V1ObjectMeta(labels={"app" : "nginx"}),
            spec=client.V1PodSpec(
                containers=[
                    client.V1Container(
                        name="nginx",
                        image="nginx",
                        ports=[
                            client.V1ContainerPort(container_port=8089)
                        ]
                    )
                ]
            )
        )
    )
)

deplo_get = client.AppsV1Api()

try:
    resource = deplo_get.create_namespaced_deployment(namespace="default",body=deploy)
    print("deployment create sussessfully. status: '%s'" % resource.status)
except Exception as e:
    print("deployment create error. status is '%s'" %e)




# 创建job
import yaml
from kubernetes import config,client
config.kube_config.load_kube_config(r"C:\Users\4407\Desktop\yun\config")
def creat_job():
     job = client.BatchV1Api()
     with open('f.yaml','r') as f:
        job_yaml = yaml.safe_load(f)
     job_create = job.create_namespaced_job(namespace="default", body=job_yaml)
     return job_create
try:
    print("job create sussessful. status is '%s'" %str(creat_job().status))
except Exception as e:
    print("job create error. status is '%s" %e)