aws eks 和 aws sso RBAC 身份验证问题

问题描述

我创建了一个全新的 AWS SSO(使用内部 IDP 作为身份源，因此不使用 Active Directory).
我能够登录 AWS CLI、AWS GUI，但无法执行任何 kubectl 操作.

I have created a fresh AWS SSO (used internal IDP as identity source, so no use of Active Directory).
I am able to login to AWS CLI, AWS GUI, but unable to perform any kubectl ops.

error: You must be logged in to the server (Unauthorized)

我认为这与 RBAC 有关，因为我可以通过以下方式获取 EKS 令牌aws eks get-token.

This has something to do with the RBAC I think as I am able to get EKS token viaaws eks get-token.

➜ cat ~/.aws/config

[profile team-sso-admin]
sso_start_url=https://team.awsapps.com/start
sso_region=us-west-2
sso_account_id=1111111111
sso_role_name=AdministratorAccess
region=us-west-2
credential_process = aws-vault exec team-sso-admin --json


➜ aws-vault exec team-sso-admin --debug -- zsh --login
➜ env | grep AWS
AWS_VAULT_PROMPT=pass
AWS_VAULT_BACKEND=pass
AWS_VAULT=team-sso-admin
AWS_DEFAULT_REGION=us-west-2
AWS_REGION=us-west-2
AWS_ACCESS_KEY_ID=xxx
AWS_SECRET_ACCESS_KEY=xxx
AWS_SESSION_TOKEN=xxx
AWS_SECURITY_TOKEN=yyy
AWS_SESSION_EXPIRATION=2021-01-11T05:55:51Z
AWS_SDK_LOAD_CONFIG=1

➜ aws sts get-caller-identity --output yaml

Account: '111111111111'
Arn: arn:aws:sts::111111111111:assumed-role/AWSReservedSSO_AdministratorAccess_6c71da2aa3076dfb/TestUser
UserId: XXX:TestUser

➜ aws eks get-token --cluster-name team-shared-eks --role arn:aws:iam::111111111111:role/aws-reserved/sso.amazonaws.com/us-west-2/AWSReservedSSO_AdministratorAccess_67d1da2aa3076dfb

{"kind": "ExecCredential", "apiVersion": "client.authentication.k8s.io/v1alpha1", "spec": {}, "status": {"expirationTimestamp": "2021-01-11T02:49:11Z", "token": "xxx"}}

kubeconfig

config

- name: arn:aws:eks:us-west-2:111111111111:cluster/team-shared-eks
  user:
    exec:
      apiVersion: client.authentication.k8s.io/v1alpha1
      args:
      - --region
      - us-west-2
      - eks
      - get-token
      - --cluster-name
      - team-shared-eks
      - --role
      - arn:aws:iam::111111111111:role/aws-reserved/sso.amazonaws.com/us-west-2/AWSReservedSSO_AdministratorAccess_67d1da2aa3076dfb
      command: aws

aws-auth

mapRoles: |
    - "groups":
      - "system:bootstrappers"
      - "system:nodes"
      "rolearn": "arn:aws:iam::111111111111:role/team-shared-eks20210110051740674200000009"
      "username": "system:node:{{EC2PrivateDNSName}}"
    - "groups":
      - "system:master"
      "rolearn": "arn:aws:iam::111111111111:role/team-saml-devops"
      "username": "team-devops"
    - "groups":
      - "system:master"
      "rolearn": "arn:aws:iam::111111111111:role/aws-reserved/sso.amazonaws.com/us-west-2/AWSReservedSSO_AdministratorAccess_67d1da2aa3076dfb"
      "username": "team-sso-devops"

team-sso-devops 用户的集群角色绑定:

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  creationTimestamp: "2021-01-11T01:37:51Z"
  name: team:sso:devops
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: team-sso-devops
  namespace: default

推荐答案

选项 #1 - 尝试从 role_arn (源)

Option #1 - Try removing aws-reserved/sso.amazonaws.com/ from the role_arn (source)

选项 #2 - 使用 aws-iam-authenticator，官方文档 提供了如何使用 SSO 和 kubectl (kubeconfig) 的完整示例

Option #2 - Use aws-iam-authenticator, the official docs provide a thorough example of how to use SSO and kubectl (kubeconfig)

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