Question

我使用了RBAC启用的kubernetes集群 kops版本 1.8.0-beta.1 ，我正在尝试运行一个nginx pod，它应该附加预先创建的EBS卷并且pod应该启动。但即使我是 admin 用户，也会将问题视为未获授权。任何帮助将受到高度赞赏。

kubectl version Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.3", GitCommit:"f0efb3cb883751c5ffdbe6d515f3cb4fbe7b7acd", GitTreeState:"clean", BuildDate:"2017-11-09T07:27:47Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.3", GitCommit:"f0efb3cb883751c5ffdbe6d515f3cb4fbe7b7acd", GitTreeState:"clean", BuildDate:"2017-11-08T18:27:48Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}

namespace:default

cat test-ebs.yml

apiVersion: v1
kind: Pod
metadata:
  name: test-ebs
spec:
  containers:
  - image: nginx
    name: nginx
    volumeMounts:
    - mountPath: /test-ebs
      name: test-volume
  volumes:
  - name: test-volume
    awsElasticBlockStore:
      volumeID: <vol-IDhere>
      fsType: ext4

我收到以下错误：

Warning  FailedMount            8m               attachdetach                                        AttachVolume.Attach failed for volume "test-volume" : Error attaching EBS volume "<vol-ID>" to instance "<i-instanceID>": "UnauthorizedOperation: You are not authorized to perform this operation

Answer 1

在kops 1.8.0-beta.1中，主节点要求您使用以下标记标记AWS卷：

KubernetesCluster: <clustername-here>

如果你使用像这样的kops创建了k8s集群：

kops create cluster --name=k8s.yourdomain.com [other-args-here]

您在EBS卷上的标记需要

KubernetesCluster: k8s.yourdomain.com

master上的策略将包含一个块，其中包含：

{
  "Sid": "kopsK8sEC2MasterPermsTaggedResources",
  "Effect": "Allow",
  "Action": [
    "ec2:AttachVolume",
    "ec2:AuthorizeSecurityGroupIngress",
    "ec2:DeleteRoute",
    "ec2:DeleteSecurityGroup",
    "ec2:DeleteVolume",
    "ec2:DetachVolume",
    "ec2:RevokeSecurityGroupIngress"
  ],
  "Resource": [
    "*"
  ],
  "Condition": {
    "StringEquals": {
      "ec2:ResourceTag/KubernetesCluster": "k8s.yourdomain.com"
    }
  }
}

该条件表示master-policy具有仅附加包含正确标记的卷的权限。

Answer 2

问题是因为kops1.8版本。回滚到kops版本v1.7.1。它现在正在工作。

需要有关kubernetes的卷装入问题的帮助

2 个答案: