技术标签: JAVA spring boot SpringBoot
要进行监控,需要两个Project,一个是Admin Server端,负责监控Spring boot的项目,另一个是Admin Client端,是被监控的Spring boot服务。当然也可以一个项目同时做服务端和客户端,监控自己的本项目服务;
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-boot-admin-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-admin-server</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-starter-server</artifactId>
<version>2.2.2</version>
</dependency>
<!--监控-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-server-ui</artifactId>
<version>2.2.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
spring:
application:
name: admin-server
server:
port: 9090
@EnableAdminServer
pom文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-boot-admin-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-admin-server</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-starter-client</artifactId>
<version>2.2.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
server:
port: 8800
spring:
boot:
admin:
client:
url: http://localhost:9090
-达到百分之多少的时候会触发自定义报警消息提示,可配置到配置文件中
import java.io.IOException;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import com.face.ele.common.utils.IpInfoUtil;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import com.alibaba.fastjson.JSON;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author weijianxing
* @description: TODO
* @date 2021/1/21 15:38
*/
@RestController
@RequestMapping("xboot/jvmMemory")
@Slf4j
public class JvmWarnMonitor {
@Autowired
private IpInfoUtil ipInfoUtil;
@Value("${server.port}")
private String WARN_PORT;
@Value("${xboot.jvmMemoryLimit}")
private double jvmMemoryLimit;
@GetMapping("/getJvmMemory")
@ApiOperation("获取jvm内存情况")
public boolean getJvmMemory() throws IOException{
InetAddress address=InetAddress.getLocalHost();
//System.out.println(address.toString().split("/")[1]);
String WARN_IP= address.toString().split("/")[1];//ipInfoUtil.getIpAddr(request);
//JVM最大内存
final String MAX_MEMORY = "/xboot/actuator/metrics/jvm.memory.max";
//JVM已使用的内存
final String USED_MEMORY = "/xboot/actuator/metrics/jvm.memory.used";
//可供JVM用的内存
final String FREE_MEMORY = "/xboot/actuator/metrics/jvm.memory.committed";
//拼接接口路径地址
String host1="http://"+WARN_IP+":"+WARN_PORT+"/"+MAX_MEMORY;
String host2="http://"+WARN_IP+":"+WARN_PORT+"/"+USED_MEMORY;
String host3="http://"+WARN_IP+":"+WARN_PORT+"/"+FREE_MEMORY;
//拿到MAX_MEMORY
Object model1=JvmWarnMonitor.jvmMsg(host1);
Map<String,List<Map>> map=(Map)model1;
String maxMemory=map.get("measurements").get(0).get("value").toString();
//拿到USED_MEMORY
Object model2=JvmWarnMonitor.jvmMsg(host2);
Map<String,List<Map>> map2=(Map)model2;
String usedMemory=map2.get("measurements").get(0).get("value").toString();
//FREE_MEMORY
Object model3=JvmWarnMonitor.jvmMsg(host3);
Map<String,List<Map>> map3=(Map)model3;
String freeMemory=map3.get("measurements").get(0).get("value").toString();
//判断当jvm内存达到90% 进行报警
double used= Double.parseDouble(usedMemory) ;
double max= Double.parseDouble(maxMemory)*(jvmMemoryLimit/100) ;
//然后开始判断,如果有超过的
if(used>=max){
log.info("内存超出"+jvmMemoryLimit+"%");
log.info("maxMemory"+maxMemory);
log.info("usedMemory"+usedMemory);
log.info("freeMemory"+freeMemory);
return true;
}else{
return false;
}
}
/**
* 获得所有报警类别
* @return
* @throws IOException
*/
public static Object jvmMsg(String url) throws IOException{
RequestBuilder builder = RequestBuilder.get().setUri(url);
//HttpUriRequest httpRequest = builder.setEntity(new StringEntity(JSON.toJSONString(requestObject), "utf-8")).build();
//请求设置
HttpUriRequest httpRequest = builder.setEntity(new StringEntity("", "utf-8")).build();
//建立请求连接
CloseableHttpClient httpclient = HttpClients.custom().build();
CloseableHttpResponse response = httpclient.execute(httpRequest);
HttpEntity entity = response.getEntity();
//返回结果信息
byte[] data = EntityUtils.toByteArray(entity);
//返回到页面结果
Object obj=JSON.parse(new String(data));
return obj;
}
@GetMapping("/testMemory")
@ApiOperation("测试jvm_heap溢出")
public String testMemory() throws IOException {
int i=0;
ArrayList<byte[]> a=new ArrayList<byte[]>();
//调用是否超出规定范围,满足了就不要死循环了
boolean flag=this.getJvmMemory();
while (!flag) {
try {
boolean flag2=this.getJvmMemory();
if(flag2){
break;
}
Thread.sleep(500);
a.add(new byte[1024*1024]);
i++;
System.out.println("添加"+i+"M");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
log.info("已经溢出,结束测试");
return "已经溢出,结束测试;已添加"+i+"M";
}
public static void main(String[] args) throws IOException {
/*String usedMemory="5.619843071E9";
String maxMemory="10.123";
double jvmMemoryLimit=50;
double used= Double.parseDouble(usedMemory) ;
double max= Double.parseDouble(maxMemory)* (jvmMemoryLimit/100);
//然后开始判断,如果有超过的
if(used>=max){
System.out.println("超出");
}*/
/*InetAddress address=InetAddress.getLocalHost();
System.out.println(address.toString().split("/")[1]);*/
/*//JVM最大内存
final String MAX_MEMORY = "/xboot/actuator/metrics/jvm.memory.max";
//JVM已使用的内存
final String USED_MEMORY = "/xboot/actuator/metrics/jvm.memory.used";
//可供JVM用的内存
final String FREE_MEMORY = "/xboot/actuator/metrics/jvm.memory.committed";
//拼接接口路径地址
String host1="http://127.0.0.1:8877/"+MAX_MEMORY;
String host2="http://127.0.0.1:8877/"+USED_MEMORY;
String host3="http://127.0.0.1:8877/"+FREE_MEMORY;
//拿到MAX_MEMORY
Object model1=JvmWarnMonitor.jvmMsg(host1);
Map<String,List<Map>> map=(Map)model1;
Object maxMemory=map.get("measurements").get(0).get("value");
System.out.println("maxMemory"+maxMemory);
//拿到USED_MEMORY
Object model2=JvmWarnMonitor.jvmMsg(host2);
Map<String,List<Map>> map2=(Map)model2;
Object usedMemory=map2.get("measurements").get(0).get("value");
System.out.println("usedMemory"+usedMemory);
//FREE_MEMORY
Object model3=JvmWarnMonitor.jvmMsg(host3);
Map<String,List<Map>> map3=(Map)model3;
Object freeMemory=map3.get("measurements").get(0).get("value");
System.out.println("freeMemory"+freeMemory);*/
}
}
配置的yml文件
jvmMemoryLimit: 50 #超出最大值的百分比
可以调用测试jvm内存溢出的接口(上面代码)
http://localhost:8877/xboot/jvmMemory/testMemory 即可
然后在页面不断刷新 http://localhost:8877/xboot/getJvmMemory 接口可查出是否报警
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