Kubernetes从0到1-第五篇部署Prometheus监控

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环境要求

helm 版本 v3.3+
kubernetes 集群版本 1.14+

添加国内chart仓库

首先，添加国内的镜像仓库源

helm repo add apphub https://apphub.aliyuncs.com
helm repo update

查看已经添加的 chart 库

helm repo list

创建命名空间 namespace
将 Prometheus 安装到独立的命名空间。

创建 namespace 的配置文件 monitoring.yaml

apiVersion: v1
kind: Namespace
metadata:name: monitoringlabels:name: monitoring

应用刚创建的 yaml 文件

kubectl apply -f monitoring.yaml

选择 prometheus-operator 版本

查询所需要的版本:

# helm search prometheus-operator -lapphub/prometheus-operator      8.7.0           0.35.0          Provides easy monitoring definitions for Kubernetes servi...
apphub/prometheus-operator      8.2.2           0.34.0          Provides easy monitoring definitions for Kubernetes servi...
apphub/prometheus-operator      8.2.0           0.34.0          Provides easy monitoring definitions for Kubernetes servi...
apphub/prometheus-operator      8.1.2           0.34.0          Provides easy monitoring definitions for Kubernetes servi...
apphub/prometheus-operator      7.1.1           0.32.0          Provides easy monitoring definitions for Kubernetes servi...

选择8.2.2版本安装。

安装

下载chart

helm pull apphub/prometheus-operator --version 8.2.2
tar -xvf prometheus-operator-8.2.2.tgz && cd prometheus-operator/

修改父values.yaml

alertmanager:ingress:enabled: truehosts: - alertmanager.demo.comservice:loadBalancerSourceRanges: ["192.168.238.0/24"]type: LoadBalancer
grafana:# 覆盖子chart（grafana）镜像版本image:repository: grafana/grafanatag: 8.1.0enabled: true# 启用密码adminPassword: admin@123456ingress:enabled: truehosts:- grafana.demo.comgrafana.ini:## 添加数据库信息，数据库配置信息将写入grafana配置文件 grafana.ini 中。database:type: mysqlhost: 192.168.238.150name: grafanauser: grafanapassword: ZdZ5GIBhssl_mode: disable
prometheus:enabled: trueservice:loadBalancerSourceRanges: ["192.168.238.0/24"]type: LoadBalanceringress:enabled: truehosts:- prometheus.demo.comprometheusSpec:# 持久化存储，实现TSDB数据持久化storageSpec: volumeClaimTemplate:spec:storageClassName: managed-nfs-storageaccessModes: ["ReadWriteOnce"]resources:requests:storage: 20Gi

安装prometheus-operator

helm install prometheus -n monitoring . -f ./values.yaml

查看运行的pod

kubectl get pods -n monitoringNAME                                                     READY   STATUS    RESTARTS   AGE
alertmanager-prometheus-prometheus-oper-alertmanager-0   2/2     Running   0          4h2m
prometheus-grafana-b876dcf9c-9d92n                       2/2     Running   0          4h2m
prometheus-kube-state-metrics-6f569f64f6-x2fxl           1/1     Running   0          4h2m
prometheus-prometheus-node-exporter-4bnd2                1/1     Running   0          4h2m
prometheus-prometheus-node-exporter-4j8m9                1/1     Running   0          4h2m
prometheus-prometheus-node-exporter-5md8v                1/1     Running   0          4h2m
prometheus-prometheus-oper-operator-7687488465-cmg9l     2/2     Running   0          4h2m
prometheus-prometheus-prometheus-oper-prometheus-0       3/3     Running   1          4h1m

查看ingress

kubectl get ingress -n monitoringNAME                                      CLASS    HOSTS                   ADDRESS           PORTS   AGE
prometheus-grafana                        <none>   grafana.demo.com        192.168.238.156   80      20h
prometheus-prometheus-oper-alertmanager   <none>   alertmanager.demo.com   192.168.238.156   80      20h
prometheus-prometheus-oper-prometheus     <none>   prometheus.demo.com     192.168.238.156   80      20h