SpringBoot+Prometheus+Grafana实现应用监控和报警的详细步骤

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-actuator</artifactId>
 </dependency>
 <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
 </dependency>

 <dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <optional>true</optional>
 </dependency>

 <!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_spring_boot -->
 <dependency>
  <groupId>io.prometheus</groupId>
  <artifactId>simpleclient_spring_boot</artifactId>
  <version>0.8.1</version>
 </dependency>

 <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-security</artifactId>
 </dependency>

package cn.sp; 

import io.prometheus.client.spring.boot.EnablePrometheusEndpoint; 
import io.prometheus.client.spring.boot.EnableSpringBootMetricsCollector; 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
@EnablePrometheusEndpoint 
@EnableSpringBootMetricsCollector 
@SpringBootApplication 
public class MonitorDemoApplication { 

 public static void main(String[] args) { 
 SpringApplication.run(MonitorDemoApplication.class, args); 
 } 

}

server: 
 port: 8848 
spring: 
 application: 
 name: monitor-demo 

security: 
 user: 
 name: admin 
 password: 1234 
 basic: 
 enabled: true 
 # 安全路径列表，逗号分隔，此处只针对/admin路径进行认证 
 path: /admin 

# actuator暴露接口的前缀 
management: 
 context-path: /admin 
 # actuator暴露接口使用的端口，为了和api接口使用的端口进行分离 
 port: 8888 
 security: 
 enabled: true 
 roles: SUPERUSER

@RequestMapping("/heap/test")
@RestController
public class TestController {

 public static final Map<String, Object> map = new ConcurrentHashMap<>();

 @RequestMapping("")
 public String testHeapUsed() {
 for (int i = 0; i < 10000000; i++) {
  map.put(i + "", new Object());
 }
 return "ok";
 }
}

scrape_configs: 
 # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config. 
 # - job_name: 'prometheus' 

 # metrics_path defaults to '/metrics' 
 # scheme defaults to 'http'. 

 # static_configs: 
 # - targets: ['localhost:9090'] 
 - job_name: 'monitor-demo' 
 scrape_interval: 5s # 刮取的时间间隔 
 scrape_timeout: 5s 
 metrics_path: /admin/prometheus 
 scheme: http 
 basic_auth: #认证信息 
 username: admin 
 password: 1234 
 static_configs: 
 - targets: 
 - 127.0.0.1:8888 #此处填写 Spring Boot 应用的 IP + 端口号

#################################### SMTP / Emailing #####################
[smtp]
enabled = true
host = smtp.exmail.qq.com:465
user = xxxx@ininin.com
# If the password contains # or ; you have to wrap it with triple quotes. Ex """#password;"""
password = XXX
cert_file =
key_file =
skip_verify = true
from_address = xxxx@ininin.com
from_name = Grafana
ehlo_identity = ininin.com