deploy_tomcat.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: tomcat
  name: tomcat
spec:
  replicas: 1
  selector:
    matchLabels:
      app: tomcat
  template:
    metadata:
      annotations:
        learn.guyongquan.live/prometheusjmxexporterport: "18080"
      labels:
        app: tomcat
    spec:
      containers:
       - env:
          - name: CATALINA_OPTS
            value: -javaagent:/data/jmxexporter.jar=18080:/data/tomcat.yml
         image: tomcat
         name: tomcat
         imagePullPolicy: Always
         resources:
            requests:
              cpu: 200m
              memory: 200Mi
         ports:
          - containerPort: 8080
         livenessProbe:
           tcpSocket:
             port: 8080
         volumeMounts:
          - mountPath: /data/jmxexporter.jar
            name: jmxjar
            subPath: jmxexporter.jar
          - mountPath: /data/tomcat.yml
            name: jmxconfig
            subPath: tomcat.yml
      restartPolicy: Always
      volumes:
       - name: jmxjar
         configMap:
          name: jmxexporterfiles
          items:
            - key: jmxexporter.jar
              path: jmxexporter.jar
       - name: jmxconfig
         configMap:
          name: jmxexporterfiles
          items:
            - key: tomcat.yml
              path: tomcat.yml