服务帐户角色绑定不适用于API访问

Question

我正在开发与Kubernetes交互的工具。我有允许所有身份验证提供程序的OpenShift设置。我可以像我期望的那样登录Web控制台。

我还能够设置服务帐户并为服务帐户用户分配一个集群角色绑定。尽管如此，当我使用该服务帐户的令牌访问REST API时，我被禁止。

当我尝试通过OpenShift命令设置角色绑定时会发生以下情况：

[root@host1 ~]# oadm policy add-cluster-role-to-user view em7 --namespace=default
[root@host1 ~]# oadm policy add-cluster-role-to-user cluster-admin em7 --namespace=default
[root@host1 ~]# oadm policy add-cluster-role-to-user cluster-reader em7 --namespace=default


[root@host1 ~]# oc get secrets | grep em7
em7-dockercfg-hnl6m         kubernetes.io/dockercfg               1         18h
em7-token-g9ujh             kubernetes.io/service-account-token   4         18h
em7-token-rgsbz             kubernetes.io/service-account-token   4         18h


TOKEN=`oc describe secret em7-token-g9ujh | grep token: | awk '{ print $2 }'`


[root@host1 ~]# curl -kD - -H "Authorization: Bearer $TOKEN" https://localhost:8443/api/v1/pods
HTTP/1.1 403 Forbidden
Cache-Control: no-store
Content-Type: application/json
Date: Tue, 19 Jun 2018 15:36:40 GMT
Content-Length: 260

{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {},
  "status": "Failure",
  "message": "User \"system:serviceaccount:default:em7\" cannot list all pods in the cluster",
  "reason": "Forbidden",
  "details": {
    "kind": "pods"
  },
  "code": 403
}

我也可以尝试使用（Openshift Admin Token）中的yaml文件：＃创建服务帐户“ns-reader”apiVersion：v1 kind：ServiceAccount metadata：name：ns-reader namespace：default

---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  # "namespace" omitted since ClusterRoles are not namespaced
  name: global-reader
rules:
- apiGroups: [""]
  # add other rescources you wish to read
  resources: ["pods", "secrets"]
  verbs: ["get", "watch", "list"]

---
# This cluster role binding allows service account "ns-reader" to read pods in all available namespace
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: read-ns
subjects:
- kind: ServiceAccount
  name: ns-reader
  namespace: default
roleRef:
  kind: ClusterRole
  name: global-reader
  apiGroup: rbac.authorization.k8s.io

当我运行它时，我收到以下错误：

[root@host1 ~]# kubectl create -f stack_overflow_49667238.yaml
error validating "stack_overflow_49667238.yaml": error validating data: API version "rbac.authorization.k8s.io/v1" isn't supported, only supports API versions ["federation/v1beta1" "v1" "authentication.k8s.io/v1beta1" "componentconfig/v1alpha1" "policy/v1alpha1" "rbac.authorization.k8s.io/v1alpha1" "apps/v1alpha1" "authorization.k8s.io/v1beta1" "autoscaling/v1" "extensions/v1beta1" "batch/v1" "batch/v2alpha1"]; if you choose to ignore these errors, turn validation off with --validate=false

我已经从列表中尝试了几种不同的API版本，但它们都以类似的方式失败了。

Answer 1

oadm policy add-cluster-role-to-user view em7授予名为em7的用户

您需要向服务帐户授予权限，例如oadm policy add-cluster-role-to-user view system:serviceaccount:default:em7