本文不包含持久化存储，所以数据会随pod丢失，请自行搜索相关教程（其实就是我不会）

数据收集当然是prometheus了，可是看到安装教程我人都麻了，又臭又长，经过不断搜索后终于发现kube-prometheus 可以理解成别人整合好的轮子，一键安装
prometheus$⟶$prometheus-operator$⟶$kube-prometheus
中杯$⟶$大杯$⟶$超大杯
首先按官方安装喜闻乐见的镜像拉不下来

# 失败的镜像
k8s.gcr.io/prometheus-adapter/prometheus-adapter:v0.9.1
k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.5.0

# 平替镜像
docker pull lbbi/prometheus-adapter:v0.9.1
docker pull bitnami/kube-state-metrics

# 打标签替换
docker tag lbbi/prometheus-adapter:v0.9.1 k8s.gcr.io/prometheus-adapter/prometheus-adapter:v0.9.1
docker tag bitnami/kube-state-metrics:latest  k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.5.0

ok啦，这时候应该都running了吧，不出意外的话还是有意外node-exporter还是没启动起来

Error: failed to start container "node-exporter": 
Error response from daemon: path / is mounted on / but it is not a shared or slave mount

当你搜索了一圈发现这么个解决方案

kubectl patch ds monitoring-prometheus-node-exporter --type "json" -p '[{"op": "remove", "path" : "/spec/template/spec/containers/0/volumeMounts/2/mountPropagation"}]'

尽管你修改成你本地正确的参数指令却还是得到这样的提示

The request is invalid

找到资源文件nodeExporter-daemonset.yaml 手动修改吧

で，mountPropagation: HostToContainerの行を削除する（2箇所) 咦，为什么是日语呢，因为我是从一个日本网站上扒到的

然后重新apply一下 ok 正常running

接下来试验下ingress-nginx吧,正好把kube-prometheus里的grafana等乱七八糟的用ingress暴露出来

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: prometheus-ingress
  namespace: monitoring
spec:
  ingressClassName: nginx
  rules:
    - host: grafana.test.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: grafana
                port:
                  number: 3000
    - host: alertmanager.test.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: alertmanager-main
                port:
                  number: 9093
    - host: prometheus.test.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: prometheus-k8s
                port:
                  number: 9090

直接域名访问就完事了，全都ok啦，host文件 127.0.0.1映射域名不要忘记