<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>net.logstash.logback</groupId>
    <artifactId>logstash-logback-encoder</artifactId>
    <version>6.4</version>
</dependency>
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
</dependency>

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

@Slf4j
@Service
public class LogGenerator {
    public void generate(int count) {
        log.info("Start generating logs");
        LongStream.range(0, count)
                .forEach(i -> log.info("Log {}", i));
    }
}

@Slf4j
@RestController
@RequiredArgsConstructor
public class LogController {
    private final LogGenerator generator;
    @GetMapping("/generate")
    public ResponseEntity test(@RequestParam(name = "count", defaultValue = "0") Integer count) {
        log.info("Test request received with count: {}", count);
        generator.generate(count);
        return ResponseEntity.ok("Success!");
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="consoleAppender" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d [%thread] %-5level  %logger{35} - [%mdc] - %msg%n</pattern>
        </encoder>
    </appender>
    <appender name="filebeatAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>./log/application.log</file>
        <append>true</append>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>./log/application.%d.%i.log.gz</fileNamePattern>
            <maxFileSize>10MB</maxFileSize>
        </rollingPolicy>
    </appender>
    <root level="INFO">
        <appender-ref ref="consoleAppender" />
        <appender-ref ref="filebeatAppender" />
    </root>
</configuration>

@Slf4j
@Component
public class LogFilter extends OncePerRequestFilter {
    private static final String REQUEST_ID = "requestId";
    @Override
    protected void doFilterInternal(HttpServletRequest request,
                                    HttpServletResponse response,
                                    FilterChain filterChain) throws ServletException, IOException {
        String requestId = request.getHeader(REQUEST_ID);
        if (requestId == null) {
            requestId = UUID.randomUUID().toString();
        }
        MDC.put(REQUEST_ID, requestId);
        try {
            log.info("Started process request with {} : {}", REQUEST_ID, requestId);
            filterChain.doFilter(request, response);
        } finally {
            MDC.clear();
        }
    }
}

MDC.put(REQUEST_ID, requestId);

MDC.clear();

mvn spring-boot:run

curl "localhost:8080/generate?count=10"

{
   "@timestamp":"2020-10-17T22:39:45.595+03:00",
   "@version":"1",
   "message":"Writing ["Success!"]",
   "logger_name":"org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor",
   "thread_name":"http-nio-8080-exec-3",
   "level":"INFO",
   "level_value":10000,
   "requestId":"77abe5ac-4458-4dc3-9f4e-a7320979e3ae"
}

inputs:
  - enabled: true
    encoding: utf-8
    exclude_files: ['\.gz$']
    json:
      add_error_key: true
      keys_under_root: true
      overwrite_keys: true
    paths:
    - {ваш путь до папки с логами}/*.log
    scan_frequency: 10s
    type: log

output:
  logstash:
    hosts:
    - localhost:5044
    ssl:
      certificate_authorities:
      - {путь до папки с сертификатами}/logstash-beats.crt

version: '3.7'
services:
  elk:
    image: sebp/elk
    ports:
      - "5601:5601" #kibana
      - "9200:9200" #elastic
      - "5044:5044" #logstash

./filebeat -e run

curl "localhost:8080/generate?count=100"