无法在 K8S 集群中创建 Prometheus [英] Not able to create Prometheus in K8S cluster

问题描述

我正在尝试在我的 K8S 集群上安装 Prometheus

I'm trying to install Prometheus on my K8S cluster

当我运行命令时

kubectl get namespaces

我得到以下命名空间:

default       Active   26h
kube-public   Active   26h
kube-system   Active   26h
monitoring    Active   153m
prod          Active   5h49m

现在我想通过

helm install stable/prometheus --name prom -f k8s-values.yml

我得到了错误:

错误:发布prom-demo 失败:命名空间默认"被禁止:用户system:serviceaccount:kube-system:default"无法获取资源命名空间default"中API组"中的命名空间"

Error: release prom-demo failed: namespaces "default" is forbidden: User "system:serviceaccount:kube-system:default" cannot get resource "namespaces" in API group "" in the namespace "default"

即使我切换到 monitoring ns 我也遇到了同样的错误，

even if I switch to monitoring ns I got the same error,

k8s-values.yml 如下所示

the k8s-values.yml look like following

rbac:
  create: false
server:
  name: server

  service:
    nodePort: 30002
    type: NodePort

知道这里可能缺少什么吗?

Any idea what could be missing here ?

推荐答案

您收到此错误是因为您在使用 RBAC 时未授予正确权限.

You are getting this error because you are using RBAC without giving the right permissions.

授予分蘖权限:
取自 https://github.com/helm/helm/blob/master/docs/rbac.md

示例:具有集群管理员角色的服务帐户在 rbac-config.yaml 中:

Example: Service account with cluster-admin role In rbac-config.yaml:

apiVersion: v1
kind: ServiceAccount
metadata:
  name: tiller
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: tiller
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
  - kind: ServiceAccount
    name: tiller
    namespace: kube-system

注意:cluster-admin 角色是在 Kubernetes 集群中默认创建的，因此您不必明确定义它.

$ kubectl create -f rbac-config.yaml
serviceaccount "tiller" created
clusterrolebinding "tiller" created
$ helm init --service-account tiller

为 prometheus 创建服务帐户:
将rbac.create的值改为true:

rbac:
  create: true
server:
  name: server

  service:
    nodePort: 30002
    type: NodePort

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