How to collect the Prometheus metrics in a java program?
I searched most of the articles, but not found my expected solutions. I am new to Prometheus. I need to get the Prometheus metrics to collect by my java program. So, need help to read or get the Prometheus metrics by my java program.
Any help or suggestion would be helpful.
Thanks
If you are using Spring boot 2.1.5.RELEASE then
- add dependencies actuator and micrometer-prometheus
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>io.micrometer</groupId> <artifactId>micrometer-registry-prometheus</artifactId> </dependency>
- add config to enable access to endpoint /actuator/prometheus
management: endpoints: web: exposure: include: '*'
- try to request
http://domain:port/actuator/prometheus
EDIT For kubernetes im using kind deployment:
apiVersion: apps/v1 kind: Deployment metadata: name: myAppName spec: replicas: 1 selector: matchLabels: app: myAppName template: metadata: labels: app: myAppName annotations: prometheus.io/scrape: "true" prometheus.io/port: "8091" prometheus.io/path: "/actuator/prometheus" spec: containers: - name: myAppName image: images.com/app-service:master imagePullPolicy: Always ports: - containerPort: 8091 env: - name: INSTANCE_IP valueFrom: fieldRef: fieldPath: status.podIP - name: SPRING_PROFILES_ACTIVE value: "prod" - name: CONFIG_SERVER_ADDRESS value: "http://config-server:8888" livenessProbe: failureThreshold: 3 httpGet: path: /actuator/health port: 8091 scheme: HTTP initialDelaySeconds: 45 periodSeconds: 10 successThreshold: 1 timeoutSeconds: 5 readinessProbe: failureThreshold: 5 httpGet: path: /actuator/health port: 8091 scheme: HTTP initialDelaySeconds: 30 periodSeconds: 10 successThreshold: 1 timeoutSeconds: 5 nodeSelector: servicetype: mvp-cluster 
