SpringBoot集成Prometheus实现监控的过程

 <dependency>
            <groupId>io.micrometer</groupId>
            <artifactId>micrometer-registry-prometheus</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

@SuppressWarnings("all")
@Component
public class MetricsCounter {
    private static Counter loginCounter = null;
    private static Counter registerCounter = null;
    private static AtomicInteger atomicInteger;
    public MetricsCounter(MeterRegistry registry) {
        loginCounter = registry.counter("login_nums");
        registerCounter = registry.counter("register_nums");
        atomicInteger = registry.gauge("ssl_expire_days", new AtomicInteger(10));
    }
    /**
     * 此方法可能会被多线程执行，需要考虑线程安全问题
     */
    public synchronized static void incrLogin() {
        loginCounter.increment();
    }
    public synchronized static void incrRegister() {
        registerCounter.increment();
    }
    public static void updateSslExpireDays(){
        atomicInteger.set(new Random().nextInt(100));
    }
}

@RestController
public class TestRest {
    @GetMapping("t1")
    public String t1(){
        MetricsCounter.incrLogin();
        MetricsCounter.incrRegister();
        MetricsCounter.updateSslExpireDays();
        return "t1";
    }
}

# my global config
global:
  scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).
# Alertmanager configuration
alerting:
  alertmanagers:
    - static_configs:
        - targets:
          # - alertmanager:9093
# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"
# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: "nodeExporter"
    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.
    static_configs:
      - targets: ["192.168.240.130:9100"] #监控自己主机上的端口
  - job_name: "springboot"
    scrape_interval: 3s                                                # 多久采集一次数据
    scrape_timeout: 3s                                                 # 采集时的超时时间
    metrics_path: '/actuator/prometheus'                # 采集的路径
    static_configs:                                     # 采集服务的地址，设置成Springboot应用所在服务器的具体地址
      - targets: ["192.168.1.103:8188"]

nohup ./prometheus --config.file=./prometheus.yml &