k8s上安装prometheus

一、下载对应的kube-prometheus源码

github地址：GitHub - prometheus-operator/kube-prometheus: Use Prometheus to monitor Kubernetes and applications running on Kubernetes

1）进入目录

[root@k8s-master ~]# cd kube-prometheus
[root@k8s-master kube-prometheus]# ls
build.sh             docs             jsonnet                manifests
CHANGELOG.md         example.jsonnet  jsonnetfile.json       README.md
code-of-conduct.md   examples         jsonnetfile.lock.json  RELEASE.md
CONTRIBUTING.md      experimental     kustomization.yaml     scripts
DCO                  go.mod           LICENSE                sync-to-internal-registry.jsonnet
developer-workspace  go.sum           Makefile               tests

2）可以看到有个manifests目录这里面是我们所需的yaml，并且先运行manifests目录下setup中的yaml文件

[root@k8s-master kube-prometheus]# cd manifests/
[root@k8s-master manifests]# ls
会看到一个setup的文件夹
我们先执行这个文件夹这个里面会为我们创建命名空间
和一些基础清单
[root@k8s-master manifests]# kubectl create -f setup/

3）修改prometheus，grafana,alertmanager的yaml文件修改端口暴露为nodeport模式 为了能从外网访问

修改prometheus-service.yaml,添加NodePort类型和端口

修改prometheus-service.yaml文件，添加NodePort类型和端口

修改alertmanager-service.yaml文件添加NodePort类型和端口

访问测试

通过以下命令查看相应的服务：

kubectl get svc -n monitoring

其中红框圈出的是比较关键的服务以及其对应的访问端口，但现在还无法访问grafan、prometheus以及alertmanger，因为prometheus operator内部默认配置了NetworkPolicy，需要删除其对应的资源，才可以通过外网访问：

cd ..  #需要到manifests的同级目录下运行
kubectl delete -f manifests/prometheus-networkPolicy.yaml
kubectl delete -f manifests/grafana-networkPolicy.yaml
kubectl delete -f manifests/alertmanager-networkPolicy.yaml

删除后，通过服务器ip:服务端口的形式，即可访问对应的服务了，在此，kube-prometheus的部署彻底完成。

grafana的默认账号和密码：admin/admin

alertmanager的登录界面

prometheus的登录界面

问题：

镜像：registry.k8s.io/prometheus-adapter/prometheus-adapter:v0.12.0替换为：v5cn/prometheus-adapter:v0.12.0

registry.k8s.io/kube-state-metrics/kube-state-metrics:v2.13.0替换为： 

quay.io/coreos/kube-state-metrics:latest

二、安装钉钉，并且配置钉钉

1）创建钉钉机器人

群聊设置中【添加机器人】-【自定义】

安全设置中勾选加签

需要保存Webhook和加签的秘钥，后面k3s往钉钉机器人群聊中发信息需要。

2)自定义机器人的监控配置文件

#cat dingtalk-config.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: dingtalk-config
  namespace: monitoring
data:
  config.yml: |-
    templates:
      - /data/lai/prometheus-webhook-dingtalk/contrib/k8s/config/template.tmpl  #这个文件需要存在
    targets:
      webhook:
        url: https://oapi.dingtalk.com/robot/send?access_token=cbc36a81873b58b2374becf8a33f9053e02692a114ac7ecc1cc451caf19792a6  #这个根据自己的钉钉配置
        secret: SEC5d83c04905da4d00454782242d3e5d36857f6088ee284523041521d6cc025b0d #根据自己的钉钉配置
        mention:
          all: true #@所有人
      webhook2:
        url: https://oapi.dingtalk.com/robot/send?access_token=4df2745e8df1de6d0429e35caf15e03
        secret: SECe079af795abd316a7e1f431ee8ebcf082cc0b0611a859da

  template.tmpl: |-
    {{ define "__subject" }}[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{ .GroupLabels.SortedPairs.Values | join " " }} {{ if gt (len .CommonLabels) (len .GroupLabels) }}({{ with .CommonLabels.Remove .GroupLabels.Names }}{{ .Values | join " " }}{{ end }}){{ end }}{{ end }}
    {{ define "__alertmanagerURL" }}{{ .ExternalURL }}/#/alerts?receiver={{ .Receiver }}{{ end }}

    {{ define "__text_alert_list" }}{{ range . }}
    **Labels**
    {{ range .Labels.SortedPairs }} - {{ .Name }}: {{ .Value | markdown | html }}
    {{ end }}
    **Annotations**
    {{ range .Annotations.SortedPairs }} - {{ .Name }}: {{ .Value | markdown | html }}
    {{ end }}
    **Source:** [{{ .GeneratorURL }}]({{ .GeneratorURL }})
    {{ end }}{{ end }}

    {{ define "default.__text_alert_list" }}{{ range . }}
    ---
    **告警级别:** {{ .Labels.severity | upper }}

    **运营团队:** {{ .Labels.team | upper }}

    **触发时间:** {{ dateInZone "2006.01.02 15:04:05" (.StartsAt) "Asia/Shanghai" }}

    **事件信息:**
    {{ range .Annotations.SortedPairs }} - {{ .Name }}: {{ .Value | markdown | html }}


    {{ end }}

    **事件标签:**
    {{ range .Labels.SortedPairs }}{{ if and (ne (.Name) "severity") (ne (.Name) "summary") (ne (.Name) "team") }} - {{ .Name }}: {{ .Value | markdown | html }}
    {{ end }}{{ end }}
    {{ end }}
    {{ end }}
    {{ define "default.__text_alertresovle_list" }}{{ range . }}
    ---
    **告警级别:** {{ .Labels.severity | upper }}

    **运营团队:** {{ .Labels.team | upper }}

    **触发时间:** {{ dateInZone "2006.01.02 15:04:05" (.StartsAt) "Asia/Shanghai" }}

    **结束时间:** {{ dateInZone "2006.01.02 15:04:05" (.EndsAt) "Asia/Shanghai" }}

    **事件信息:**
    {{ range .Annotations.SortedPairs }} - {{ .Name }}: {{ .Value | markdown | html }}


    {{ end }}

    **事件标签:**
    {{ range .Labels.SortedPairs }}{{ if and (ne (.Name) "severity") (ne (.Name) "summary") (ne (.Name) "team") }} - {{ .Name }}: {{ .Value | markdown | html }}
    {{ end }}{{ end }}
    {{ end }}
    {{ end }}

    {{/* Default */}}
    {{ define "default.title" }}{{ template "__subject" . }}{{ end }}
    {{ define "default.content" }}#### \[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}\] **[{{ index .GroupLabels "alertname" }}]({{ template "__alertmanagerURL" . }})**
    {{ if gt (len .Alerts.Firing) 0 -}}

    {{ template "default.__text_alert_list" .Alerts.Firing }}


    {{- end }}

    {{ if gt (len .Alerts.Resolved) 0 -}}
    {{ template "default.__text_alertresovle_list" .Alerts.Resolved }}


    {{- end }}
    {{- end }}

    {{/* Legacy */}}
    {{ define "legacy.title" }}{{ template "__subject" . }}{{ end }}
    {{ define "legacy.content" }}#### \[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}\] **[{{ index .GroupLabels "alertname" }}]({{ template "__alertmanagerURL" . }})**
    {{ template "__text_alert_list" .Alerts.Firing }}
    {{- end }}

    {{/* Following names for compatibility */}}
    {{ define "ding.link.title" }}{{ template "default.title" . }}{{ end }}
    {{ define "ding.link.content" }}{{ template "default.content" . }}{{ end }}

#cat dingtalk-deployment.yaml

apiVersion: v1
kind: Service
metadata:
  name: dingtalk
  namespace: monitoring
  labels:
    app: dingtalk
  annotations:
    prometheus.io/scrape: 'false'
spec:
  selector:
    app: dingtalk
  ports:
  - name: dingtalk
    port: 8060
    protocol: TCP
    targetPort: 8060
 
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: dingtalk
  namespace: monitoring
spec:
  replicas: 1
  selector:
    matchLabels:
      app: dingtalk
  template:
    metadata:
      name: dingtalk
      labels:
        app: dingtalk
    spec:
      containers:
      - name: dingtalk
        image: timonwong/prometheus-webhook-dingtalk:latest
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 8060
        volumeMounts:
        - name: config
          mountPath: /etc/prometheus-webhook-dingtalk
      volumes:
      - name: config
        configMap:
          name: dingtalk-config

3、启动

kubectl apply -f dingtalk-config.yaml -f dingtalk-deployment.yaml
kubectl get pod -n monitoring

4、配置alertmanager-secret.yaml

#cat  alertmanager-secret.yaml
apiVersion: v1
kind: Secret
metadata:
  labels:
    app.kubernetes.io/component: alert-router
    app.kubernetes.io/instance: main
    app.kubernetes.io/name: alertmanager
    app.kubernetes.io/part-of: kube-prometheus
    app.kubernetes.io/version: 0.23.0
  name: alertmanager-main
  namespace: monitoring
stringData:
  alertmanager.yaml: |-
    "global":
      "resolve_timeout": "5m"
    "receivers":
    - "name": "Webhook"
      "webhook_configs":
      - "url": "http://dingtalk.monitoring.svc.cluster.local:8060/dingtalk/webhook/send"
    "route":
      "group_by":
      - "namespace"
      "group_wait": "30s"  #组告警等待时间，也就是告警产生后等待30s，如果有同一组告警一起发出
      "receiver": "Webhook"
      "repeat_interval": "2m" #重复告警的间隔时间，减少报警发送频率
      "routes":
      - "matchers":
        - "alertname = Webhook"
        "receiver": "Webhook"
type: Opaque

5.启动

kubectl apply -f alertmanager-secret.yaml

参考：

kube-prometheus部署（无坑版）-CSDN博客

Prometheus监控K8S集群并实现告警

bilibili视频：

让你快速入门Prometheus监控并实现邮箱报警_哔哩哔哩_bilibili

k8s 1.23.1 部署 prometheus 钉钉推送 自定义监控配置 promql基础语法_kube-prometheus 钉钉-CSDN博客