Kubernetes监控体系(13)-prometheus监控扩展prometheus监控mongodb/nginx/mysql/tomcat/redis

最新推荐文章于 2024-09-10 10:30:00 发布

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最新推荐文章于 2024-09-10 10:30:00 发布 · 1k 阅读

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文章标签：

#prometheus #监控tomcat #监控redis #监控mysql #监控nginx

本文指导你在k8s集群中快速部署Prometheus，监控Tomcat、Redis、MySQL、Nginx和MongoDB，包括镜像制作、Deployment和Service配置，以及 Grafana 的接入。

1.prometheus监控tomcat

tomcat_exporter地址

https://github.com/nlighten/tomcat_exporter

下面在k8s-master节点操作

（1）制作tomcat镜像，按如下步骤

mkdir /root/tomcat_image

把上面的war包和jar包传到这个目录下

cat Dockerfile
FROM tomcat
ADD metrics.war /usr/local/tomcat/webapps/
ADD simpleclient-0.8.0.jar  /usr/local/tomcat/lib/
ADD simpleclient_common-0.8.0.jar /usr/local/tomcat/lib/
ADD simpleclient_hotspot-0.8.0.jar /usr/local/tomcat/lib/
ADD simpleclient_servlet-0.8.0.jar /usr/local/tomcat/lib/
ADD tomcat_exporter_client-0.0.12.jar /usr/local/tomcat/lib/

docker build -t='xianchao/tomcat_prometheus:v1' .
docker login
  username：xianchao
  password：1989317**
docker push xianchao/tomcat_prometheus:v1 #上传镜像到hub仓库
docker pull xianchao/tomcat_prometheus:v1  #在k8s的node节点拉取镜像拉取镜像

（2）基于上面的镜像创建一个tomcat实例

cat deploy.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcat-deployment
  namespace: default
spec:
  selector: 
    matchLabels: 
     app: tomcat
  replicas: 2 # tells deployment to run 2 pods matching the template
  template: # create pods using pod definition in this template
    metadata:
      labels:
        app: tomcat
      annotations:
        prometheus.io/scrape: 'true'
    spec:
      containers:
      - name: tomcat
        image: xianchao/tomcat_prometheus:v1
        ports:
        - containerPort: 8080
        securityContext: 
          privileged: true

kubectl apply -f deploy.yaml

创建一个service，可操作也可不操作
 cat tomcat-service.yaml
kind: Service  #service 类型
apiVersion: v1
metadata:
#  annotations:
#    prometheus.io/scrape: 'true'
  name: tomcat-service
spec:
  selector:
    app: tomcat
  ports:
  - nodePort: 31360
    port: 80
    protocol: TCP
    targetPort: 8080
  type: NodePort

kubectl apply -f tomcat-service.yaml

在promethues上可以看到监控到tomcat的pod了