这篇文章主要介绍springboot整合elk.

elk 简介

  • Elasticsearch是个开源分布式搜索引擎,它的特点有:分布式,零配置,自动发现,索引自动分片,索引副本机制,restful风格接口,多数据源,自动搜索负载等。

  • Logstash是一个完全开源的工具,他可以对你的日志进行收集、过滤,并将其存储供以后使用(如,搜索)。

  • Kibana 也是一个开源和免费的工具,它Kibana可以为 Logstash 和 ElasticSearch 提供的日志分析友好的 Web 界面,可以帮助您汇总、分析和搜索重要数据日志。

elk下载安装

elk下载地址:https://www.elastic.co/downloads/

建议在 linux上运行,elk在windows上支持得不好,另外需要jdk1.8 的支持,需要提前安装好jdk.

下载完之后: 安装,以logstash为栗子:

cd /usr/local/

mkdir logstash

tar -zxvf logstash-5.3.2.tar.gz

mv logstash-5.3.2 /usr/local/logstash

配置、启动 Elasticsearch

打开Elasticsearch的配置文件:

vim config/elasticsearch.yml

修改配置:

network.host=localhost
network.port=9200

它默认就是这个配置,没有特殊要求,在本地不需要修改。

启动Elasticsearch

./bin/elasticsearch

启动成功,访问localhost:9200,网页显示:

{
  "name" : "56IrTCM",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "e4ja7vS2TIKI1BsggEAa6Q",
  "version" : {
    "number" : "5.2.2",
    "build_hash" : "f9d9b74",
    "build_date" : "2017-02-24T17:26:45.835Z",
    "build_snapshot" : false,
    "lucene_version" : "6.4.1"
  },
  "tagline" : "You Know, for Search"
}

配置、启动 logstash

在 logstash的主目录下:

vim config/log4j_to_es.conf 

修改 log4j_to_es.conf 如下:

input {
  log4j {
    mode => "server"
    host => "localhost"
    port => 4560
  }
}
filter {
  #Only matched data are send to output.
}
output {
    elasticsearch {
    action => "index"          #The operation on ES
    hosts  => "localhost:9200"   #ElasticSearch host, can be array.
    index  => "applog"         #The index to write data to.
  }
}

修改完配置后启动:

./bin/logstash -f config/log4j_to_es.conf 

终端显示如下:

image.png

访问localhost:9600

{"host":"Pc-20130412.local","version":"5.3.2","http_address":"127.0.0.1:9600","id":"e6bb985c-c688-49a4-
a55b-4d362bb4136f","name":"Pc-20130412.local","build_date":
"2017-04-24T16:32:22Z","build_sha":"242159a5eea55fe213fe5c8
52d36455e24252c82","build_snapshot":false}

证明logstash启动成功。

配置、启动kibana

到kibana的安装目录:

./bin/kibana 

默认配置即可。

访问localhost:5601,网页显示:

image.png

证明启动成功。

创建springboot工程

起步依赖如下:

<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter</artifactId>
			<exclusions>
				<exclusion>
					<groupId>org.springframework.boot</groupId>
					<artifactId>spring-boot-starter-logging</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-log4j</artifactId>
			<version>1.3.8.RELEASE</version>
		</dependency>

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


	</dependencies>

log4j的配置,/src/resources/log4j.properties如下:


log4j.rootLogger=INFO,console

# for package com.demo.elk, log would be sent to socket appender.
log4j.logger.com.forezp=DEBUG, socket

# appender socket
log4j.appender.socket=org.apache.log4j.net.SocketAppender
log4j.appender.socket.Port=4560
log4j.appender.socket.RemoteHost=localhost
log4j.appender.socket.layout=org.apache.log4j.PatternLayout
log4j.appender.socket.layout.ConversionPattern=%d [%-5p] [%l] %m%n
log4j.appender.socket.ReconnectionDelay=10000

# appender console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d [%-5p] [%l] %m%n

打印log测试:

@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringbootElkApplicationTests {

	@Test
	public void contextLoads() {
	}

	private Logger logger = Logger.getLogger(getClass());

	@Test
	public void test() throws Exception {

		for(int i=0;i<100;i++) {
			logger.info("输出info  ");
			logger.debug("输出debug+skkkw嗡嗡嗡kw");
			logger.error("输出error  嗡嗡嗡我");
		}
	}


}

在kibana 实时监控日志

打开localhost:5601:

Management=>index pattrns=>add new:

image.png

点击discovery:

image.png

参考资料

https://my.oschina.net/itblog/blog/547250

源码下载

https://github.com/forezp/SpringBootLearning