Kubernetes客户蟒蛇创建服务错误

Question

我试图在GCE hostes命名node-js-deployment Kubernetes集群我部署一个创建新的服务

我跟着文档，create_namespaced_service

这是业务数据：

{ 
    "kind": "Service", 
    "apiVersion": "v1", 
    "metadata": { 
     "name": "node-js-service" 
    }, 
    "spec": { 
     "selector": { 
      "app": "node-js" 
     }, 
     "ports": [ 
      { 
       "protocol": "TCP", 
       "port": 80, 
       "targetPort": 8000 
      } 
     ] 
    } 
} 

这是Python函数来创建服务

api_instance = kubernetes.client.CoreV1Api() 
namespace = 'default' 

body = kubernetes.client.V1Service() # V1Serice 

# Creating Meta Data 
metadata = kubernetes.client.V1ObjectMeta() 
metadata.name = "node-js-service" 

# Creating spec 
spec = kubernetes.client.V1ServiceSpec() 

# Creating Port object 
ports = kubernetes.client.V1ServicePort() 
ports.protocol = 'TCP' 
ports.target_port = 8000 
ports.port = 80 

spec.ports = ports 
spec.selector = {"app": "node-js"} 

body.spec = spec 


try: 
    api_response = api_instance.create_namespaced_service(namespace, body, pretty=pretty) 
    pprint(api_response) 
except ApiException as e: 
    print("Exception when calling CoreV1Api->create_namespaced_service: %s\n" % e) 

错误：

Reason: Bad Request 
HTTP response headers: HTTPHeaderDict({'Content-Type': 'application/json', 'Date': 'Tue, 21 Feb 2017 03:54:55 GMT', 'Content-Length': '227'}) 
HTTP response body: {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"Service in version \"v1\" cannot be handled as a Service: only encoded map or array can be decoded into a struct","reason":"BadRequest","code":400} 

但是，如果我传递JSON正在创建的服务。不知道我做错了什么。

任何帮助非常感谢，谢谢。

Answer 1

通过阅读您的代码，您似乎错过了将元数据分配到body.metadata。你错过了V1ServiceSpec的ports领域应该是一个列表，但使用单个V1ServicePort所以没有测试我想这应该工作：

api_instance = kubernetes.client.CoreV1Api() 
namespace = 'default' 

body = kubernetes.client.V1Service() # V1Serice 

# Creating Meta Data 
metadata = kubernetes.client.V1ObjectMeta() 
metadata.name = "node-js-service" 

body.metadata = metadata 

# Creating spec 
spec = kubernetes.client.V1ServiceSpec() 

# Creating Port object 
port = kubernetes.client.V1ServicePort() 
port.protocol = 'TCP' 
port.target_port = 8000 
port.port = 80 

spec.ports = [ port ] 
spec.selector = {"app": "node-js"} 

body.spec = spec 

的定义也可以直接从JSON/YAML装如官方回购中的两个示例所示 - 请参见exec.pycreate_deployment.py。然后

您的解决方案可能看起来像：

api_instance = kubernetes.client.CoreV1Api() 
namespace = 'default' 

manifest = { 
    "kind": "Service", 
    "apiVersion": "v1", 
    "metadata": { 
     "name": "node-js-service" 
    }, 
    "spec": { 
     "selector": { 
      "app": "node-js" 
     }, 
     "ports": [ 
      { 
       "protocol": "TCP", 
       "port": 80, 
       "targetPort": 8000 
      } 
     ] 
    } 
} 

try: 
    api_response = api_instance.create_namespaced_service(namespace, manifest, pretty=true) 
    pprint(api_response) 
except ApiException as e: 
    print("Exception when calling CoreV1Api->create_namespaced_endpoints: %s\n" % e)