1.什么syslog？

Syslog-ng是由Balabit IT Security Ltd.维护的一套开源的Unix和类Unix系统的日志服务套件。它是一个灵活的、可伸缩的系统日志记录程序。对于服务器日志集中收集，使用它是一个不错的解决方案。syslog-ng (syslog-Next generation) 是syslog的升级版

Syslog-ng主要特性有：

支持SSL/TSL协议
支持将日志写入数据库中,支持的数据库有MySQL, Microsoft SQL (MSSQL),Oracle, PostgreSQL, and SQLite.
支持标准的syslog协议
支持filter、parse以及rewrite
支持更多的平台
更高的负载能力

2.环境准备

docker-compose.yml

version: '3.6'
services:  syslog:    image: lscr.io/linuxserver/syslog-ng:latest    container_name: syslog-ng
    ports:      - 514:5514/udp      - 601:6601/tcp      - 6514:6514/tcp    volumes:      - ./data/config:/config      - ./data/log:/var/log #optional    restart: unless-stopped

run

docker-compose -f docker-compose.yml up -d

down

docker-compose -f docker-compose.yml down

3.代码工程

实验目的

实现将springboot应用日志发送到syslog-ng

pom.xml

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <parent>        <artifactId>springboot-demo</artifactId>        <groupId>com.et</groupId>        <version>1.0-SNAPSHOT</version>    </parent>    <modelVersion>4.0.0</modelVersion>
    <artifactId>syslog</artifactId>
    <properties>        <maven.compiler.source>8</maven.compiler.source>        <maven.compiler.target>8</maven.compiler.target>    </properties>    <dependencies>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</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-autoconfigure</artifactId>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-test</artifactId>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-log4j2</artifactId>        </dependency>    </dependencies></project>

controller

package com.et.syslog.controller;
import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;import java.util.Map;
@RestControllerpublic class HelloWorldController {    private final Logger logger = LoggerFactory.getLogger(HelloWorldController.class);
    @RequestMapping("/hello")    public Map<String, Object> showHelloWorld(@RequestParam("n") String name){        logger.info("Say hello to {}", name);        Map<String, Object> map = new HashMap<>();        map.put("msg", "HelloWorld");        return map;    }}

log4j2-spring.xml

<?xml version="1.0" encoding="UTF-8"?><Configuration>    <Appenders>        <Console name="ConsoleAppender" target="SYSTEM_OUT">            <PatternLayout                    pattern="%style{%date{DEFAULT}}{yellow} %highlight{%-5level}{FATAL=bg_red, ERROR=red, WARN=yellow, INFO=green} %message%n"/>        </Console>        <Syslog name="Syslog" format="RFC5424" host="localhost" port="514"                protocol="UDP" appName="liuhaihua.cn" facility="LOCAL0" />    </Appenders>
    <Loggers>        <Root level="info">            <AppenderRef ref="ConsoleAppender"/>            <AppenderRef ref="Syslog"/>
        </Root>    </Loggers></Configuration>

以上只是一些关键代码，所有代码请参见下面代码仓库

代码仓库

https://github.com/Harries/springboot-demo

4.测试

启动spring boot应用
访问http://127.0.0.1:8088/hello?n=niki
查看syslog-ng日志（/var/log/messages,/var/log/messages-kv.log）

5.引用

https://docs.spring.io/spring-integration/reference/syslog.html
http://www.liuhaihua.cn/archives/710916.html

ITPub博客

Spring Boot集成syslog快速入门Demo