在azure中运行kubernetes 1.15。
当我的一个或多个应用程序/pod在kubernetes中关闭时，我需要一个基本警报(电子邮件/松弛通知(。
我举了一个例子https://cert-manager.io/docs/在多个集群中运行(托管在azure中(，如果它停止运行，我想得到一个警报(电子邮件/松弛通知(。
基于此帖子：
如何设置挂钩以在Kubernetes pod重启时发送电子邮件？
它似乎收到了一个电子邮件警报，我需要安装Prometheus+Grafana访问web ui并配置警报，因此基于：
https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack
https://artifacthub.io/packages/helm/prometheus-community/kube-prometheus-stack
我试过：
helm version
version.BuildInfo{Version:"v3.1.2", GitCommit:"d878d4d45863e42fd5cff6743294a11d28a9abce", GitTreeState:"clean", GoVersion:"go1.13.8"}
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo add stable https://kubernetes-charts.storage.googleapis.com/
helm repo update
helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack --namespace monitoring
但这给出了：
Error: failed to install CRD crds/crd-alertmanager.yaml: unable to recognize "": no matches for kind "CustomResourceDefinition" in version "apiextensions.k8s.io/v1"
这里有一些关于如何手动创建crd的指南：
https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack#helm-无法创建crds
但这应该只有在运行helm 2.x时才是必要的，我不是，我正在运行3.1.2。
此外，如果我尝试手动安装它们，我会得到：
$ kubectl apply -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/release-0.42/example/prometheus-operator-crd/monitoring.coreos.com_alertmanagers.yaml
error: unable to recognize "https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/release-0.42/example/prometheus-operator-crd/monitoring.coreos.com_alertmanagers.yaml": no matches for kind "CustomResourceDefinition" in version "apiextensions.k8s.io/v1"
$ kubectl apply -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/release-0.42/example/prometheus-operator-crd/monitoring.coreos.com_podmonitors.yaml
error: unable to recognize "https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/release-0.42/example/prometheus-operator-crd/monitoring.coreos.com_podmonitors.yaml": no matches for kind "CustomResourceDefinition" in version "apiextensions.k8s.io/v1"
$ kubectl apply -f https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/release-0.42/example/prometheus-operator-crd/monitoring.coreos.com_prometheuses.yaml
error: unable to recognize "https://raw.githubusercontent.com/prometheus-operator/prometheus-operator/release-0.42/example/prometheus-operator-crd/monitoring.coreos.com_prometheuses.yaml": no matches for kind "CustomResourceDefinition" in version "apiextensions.k8s.io/v1"
...
我还发现了这个kube prometheus堆栈兼容性矩阵：
https://github.com/prometheus-operator/kube-prometheus#compatibility
但矩阵中的版本与我得到的版本不匹配：
$ helm search repo prometheus-community/kube-prometheus-stack --versions
NAME CHART VERSION APP VERSION DESCRIPTION
prometheus-community/kube-prometheus-stack 10.1.2 0.42.1 kube-prometheus-stack collects Kubernetes manif...
prometheus-community/kube-prometheus-stack 10.1.1 0.42.1 kube-prometheus-stack collects Kubernetes manif...
prometheus-community/kube-prometheus-stack 10.1.0 0.42.1 kube-prometheus-stack collects Kubernetes manif...
prometheus-community/kube-prometheus-stack 10.0.2 0.42.1 kube-prometheus-stack collects Kubernetes manif...
prometheus-community/kube-prometheus-stack 10.0.1 0.42.1 kube-prometheus-stack collects Kubernetes manif...
看来这可能是安装普罗米修斯的第三种方法
感谢任何意见。
更新：
随机选择以前的主要版本(9.4.10(似乎有效：
$ helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack --namespace monitoring --version 9.4.10
manifest_sorter.go:192: info: skipping unknown hook: "crd-install"
manifest_sorter.go:192: info: skipping unknown hook: "crd-install"
manifest_sorter.go:192: info: skipping unknown hook: "crd-install"
manifest_sorter.go:192: info: skipping unknown hook: "crd-install"
manifest_sorter.go:192: info: skipping unknown hook: "crd-install"
manifest_sorter.go:192: info: skipping unknown hook: "crd-install"
NAME: kube-prometheus-stack
LAST DEPLOYED: Fri Oct 23 15:15:03 2020
NAMESPACE: monitoring
STATUS: deployed
REVISION: 1
NOTES:
kube-prometheus-stack has been installed. Check its status by running:
kubectl --namespace monitoring get pods -l "release=kube-prometheus-stack"
Visit https://github.com/prometheus-operator/kube-prometheus for instructions on how to create & configure Alertmanager and Prometheus instances using the Operator.
我猜，在旧版本的k8s上安装东西时，试错是一种方法，不过，使用兼容性矩阵可能会很好。
基于kube prometheus堆栈回购，此helm图仅限于K8s 1.16.0或更高版本；
kube版本："gt=1.16.0-0〃；
即使github README将先决条件称为Kubernetes 1.10+ with Beta APIs，但在内部，helm图表会检查kube版本是否为1.16.0或更高版本。
所以我相信，你需要在升级K8s集群上尝试一下。
如果升级集群不是一个选项，也许你可以尝试不推荐使用的旧版本。
https://github.com/helm/charts/tree/master/stable/prometheus