Question

一直试图让kubernetes的python客户端按预期工作。祝你好运config.load_kube_config() 现在我想使用远程机器上的Python客户端，它既没有kubectl也没有~/.kube/config。尝试了python客户端API引用，例如this

段：

from __future__ import print_function
import time
import kubernetes.client
from kubernetes.client.rest import ApiException
from pprint import pprint

# Configure API key authorization: BearerToken
configuration = kubernetes.client.Configuration()
configuration.api_key['authorization'] = 'YOUR_API_KEY'
# Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
# configuration.api_key_prefix['authorization'] = 'Bearer'

首先，我似乎需要使用默认的service-account-token，其中包含：

configuration.api_key['authorization'] = 'YOUR_API_KEY

很快意识到在看到很多[SSL: CERTIFICATE_VERIFY_FAILED]

之后并非如此

有人可以提示我从新安装中获取此信息的位置吗？使用kubeadm打开这个集群。

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"9", GitVersion:"v1.9.2", GitCommit:"5fa2db2bd46ac79e5e00a4e6ed24191080aa463b", GitTreeState:"clean", BuildDate:"2018-01-18T21:10:44Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"9", GitVersion:"v1.9.2", GitCommit:"5fa2db2bd46ac79e5e00a4e6ed24191080aa463b", GitTreeState:"clean", BuildDate:"2018-01-18T09:42:01Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"linux/amd64"}

＆lt; ---------编辑以下----------＆gt;

使用以下方式管理从master获取令牌：

$ kubectl describe secret $(kubectl get secrets | grep default | cut -f1 -d ' ') | grep -E '^token' | cut -f2 -d':' | tr -d '\t'

以上结果在以下Python代码段中命名为ApiToken。

from kubernetes import client, config
from kubernetes.client.rest import ApiException
ApiToken = 'eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJkZWZhdWx0Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZWNyZXQubmFtZSI6ImRlZmF1bHQtdG9rZW4tbXF0eG4iLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC5uYW1lIjoiZGVmYXVsdCIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50LnVpZCI6IjA5NWQ3ZGVhLTA5MDgtMTFlOC04NTFiLTA4MDAyNzk0OGE2OSIsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDpkZWZhdWx0OmRlZmF1bHQifQ.DBk6gyh4BFy-Gc94dihasYXLbspMvMEjuzFS-AEyNUwk6pR1zsdYOqxo5J-0t6qHN09JyyNK5Oz75cR6bYOGxir1a7SveQpXly4S2Iu3K3o6n8ys_kdP4lNMgBZy--rE0h4neG9s91ven36XP4nYZMwvWal56w39nCUmkomR2-DfhaD4-_Mqq2bd7lmETNinD2hpzTa9cf46VTTY0kcIwhk8FzxEtPA3kxoZul0AfpZT2QlyzLk9fTBRPjd57XbktBgQmiO2wppa_A1KN1Kg83fk1p40hSfY4Vf7Dr76rmKgAUVae-qkN725FWj-4NqzktjyAqalli5jcHo2leJv0A'
configuration = client.Configuration()
configuration.host = 'https://192.168.0.110:6443'
configuration.verify_ssl=False
configuration.debug = True
configuration.api_key={"authorization":"Bearer "+ ApiToken}
client.Configuration.set_default(configuration)
kubeApi = client.CoreV1Api()
try:
    allPods = kubeApi.list_pod_for_all_namespaces(watch=False)
except ApiException as e:
    print("Exception when calling CoreV1Api->list_pod_for_all_namespaces: %s\n" % e)

回复是HTTP/1.1 403 Forbidden消息。

reply: 'HTTP/1.1 403 Forbidden\r\n'
2018-02-10 09:37:49,801 DEBUG https://192.168.0.110:6443 "GET /api/v1/pods?watch=False HTTP/1.1" 403 243
header: Content-Type header: X-Content-Type-Options header: Date header: Content-Length Exception when calling CoreV1Api->list_pod_for_all_namespaces: (403)
Reason: Forbidden
HTTP response headers: HTTPHeaderDict({'Content-Type': 'application/json', 'X-Content-Type-Options': 'nosniff', 'Date': 'Sat, 10 Feb 2018 04:07:46 GMT', 'Content-Length': '243'})
HTTP response body: {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"pods is forbidden: User \"system:serviceaccount:default:default\" cannot list pods at the cluster scope","reason":"Forbidden","details":{"kind":"pods"},"code":403}

现在对此阶段进行排除。

Answer 1

也许你需要令牌。

可以在kube-system命名空间中使用任何秘密：

$ kubectl get secrets -n kube-system 
$ kubectl describe secret/{secret_name} -n kube-system

Answer 2

[root@master1 ~]# APISERVER=$(kubectl config view --minify | grep server | cut -f 2- -d ":" | tr -d " ")
[root@master1 ~]# SECRET_NAME=$(kubectl get secrets | grep ^default | cut -f1 -d ' ')
[root@master1 ~]# TOKEN=$(kubectl describe secret $SECRET_NAME | grep -E '^token' | cut -f2 -d':' | tr -d " ")
[root@master1 ~]# curl $APISERVER/api --header "Authorization: Bearer $TOKEN" --insecure
{
  "kind": "APIVersions",
  "versions": [
    "v1"
  ],
  "serverAddressByClientCIDRs": [
    {
      "clientCIDR": "0.0.0.0/0",
      "serverAddress": "11.127.4.111:6443"
    }
  ]
}[root@master1 ~]#

Answer 3

如果您正在运行kubectl版本，并且只想重用这些凭据，那么这就是您需要的代码：

from kubernetes import config
config.load_kube_config()

如果您想获得更多示例以查看在正确代码的上下文中使用的示例，请在此处查看： https://github.com/kubernetes-client/python/tree/master/examples

我在哪里可以获得Kubernetes安装中的API_KEY

3 个答案: