SpringBoot应用整合ELK实现日志收集

概念

ELK:Elasticsearch、Logstash、Kibana,组合起来可以搭建线上日志系统

各服务作用

  • Elasticsearch:用于存储收集到的日志信息;
  • Logstash:用于收集日志,SpringBoot应用整合了Logstash以后会把日志发送给Logstash,- Logstash再把日志转发给Elasticsearch;
  • Kibana:通过Web端的可视化界面来查看日志

安装部署

  1. 安装docker与Docker Compose

  2. 安装Elasticsearch

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    docker pull elasticsearch:6.4.0
  3. 安装Logstash

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    docker pull logstash:6.4.0
  4. 安装Kibana

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    docker pull kibana:6.4.0

编写 docker-compose.yml

在SpringBoot项目中的scr/main/docker/docker-compose.yml编写
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version: '3'
services:
elasticsearch:
image: elasticsearch:6.4.0
container_name: elasticsearch
environment:
- "cluster.name=elasticsearch" #设置集群名称为elasticsearch
- "discovery.type=single-node" #以单一节点模式启动
- "ES_JAVA_OPTS=-Xms512m -Xmx512m" #设置使用jvm内存大小
ports:
- 9200:9200
kibana:
image: kibana:6.4.0
container_name: kibana
links:
- elasticsearch:es #可以用es这个域名访问elasticsearch服务
depends_on:
- elasticsearch #kibana在elasticsearch启动之后再启动
environment:
- "elasticsearch.hosts=http://es:9200" #设置访问elasticsearch的地址
ports:
- 5601:5601
logstash:
image: logstash:6.4.0
container_name: logstash
volumes:
- ./:/configdir
command: logstash -f /configdir/logstash-springboot.conf
logstash.conf #挂载logstash的配置文件
depends_on:
- elasticsearch #kibana在elasticsearch启动之后再启动
links:
- elasticsearch:es #可以用es这个域名访问elasticsearch服务
ports:
- 4560:4560

编写 logstash-springboot.conf

在SpringBoot项目中的scr/main/docker/logstash-springboot.conf编写:
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input {
tcp {
mode => "server"
host => "192.168.31.13"
port => 4560
codec => json_lines
}
}
output {
elasticsearch {
hosts => "es:9200"
index => "springboot-logstash-%{+YYYY.MM.dd}"
}
}

执行

cmd切换到docker文件夹下,执行

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docker-compose up -d

安装json_lines插件

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# 进入logstash容器
docker exec -it logstash /bin/bash
# 进入bin目录
cd /bin/
# 安装插件
logstash-plugin install logstash-codec-json_lines
# 退出容器
exit
# 重启logstash服务
docker restart logstash

访问

浏览器打开

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http://localhost:5601/app/kibana#/management?_g=()

image

SpringBoot应用集成Logstash

pom.xml添加引用

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<!--集成logstash-->
<dependency>
<groupId>net.logstash.logback</groupId>
<artifactId>logstash-logback-encoder</artifactId>
<version>5.3</version>
</dependency>

resource中新增logback-spring.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!--<!DOCTYPE configuration>-->
<configuration>
<include resource="org/springframework/boot/logging/logback/defaults.xml"/>
<include resource="org/springframework/boot/logging/logback/console-appender.xml"/>
<!--应用名称-->
<property name="APP_NAME" value="mall-admin"/>
<!--日志文件保存路径-->
<property name="LOG_FILE_PATH" value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}}/logs}"/>
<contextName>${APP_NAME}</contextName>
<!--每天记录日志到文件appender-->
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_FILE_PATH}/${APP_NAME}-%d{yyyy-MM-dd}.log</fileNamePattern>
<maxHistory>30</maxHistory>
</rollingPolicy>
<encoder>
<pattern>${FILE_LOG_PATTERN}</pattern>
</encoder>
</appender>
<!--输出到logstash的appender-->
<appender name="LOGSTASH" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
<!--可以访问的logstash日志收集端口-->
<destination>192.168.31.13:4560</destination>
<encoder charset="UTF-8" class="net.logstash.logback.encoder.LogstashEncoder"/>
</appender>
<root level="INFO">
<appender-ref ref="CONSOLE"/>
<appender-ref ref="FILE"/>
<appender-ref ref="LOGSTASH"/>
</root>
</configuration>

编写日志

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import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {
private static final Logger LOGGER = LoggerFactory.getLogger(TestController.class);

@GetMapping("/test")
public String test() {
LOGGER.debug("TestController:{}", "Hello World!!!ELK-debug");
LOGGER.error("TestController:{}", "Hello World!!!ELK-error");
LOGGER.warn("TestController:{}", "Hello World!!!ELK-warn");
LOGGER.info("TestController:{}", "Hello World!!!ELK-info");
// int i = 1 /0;
return "Hello World!!!ELK";
}

}

运行SpringBoot应用

运行SpringBoot项目,浏览器访问http://192.168.31.13:8901/test

在kibana中查看日志信息

创建index pattern

image

image

查看日志

image

注意ipd地址192.168.31.13需改为自己的本机ip

总结

搭建了ELK日志收集系统之后,如果要查看SpringBoot应用的日志信息,就不需要查看日志文件了,直接在Kibana中查看即可