<source>
  @type forward
</source>

<match **>
  @type file
  path               /var/log/fluentd/${tag}
  append             true
  <format>
    @type            single_value
    message_key      log
  </format>
  <buffer tag,time>
    @type             file
    timekey           1d
    timekey_wait      10m
    flush_mode        interval
    flush_interval    30s
  </buffer>
</match>		
		
			

docker-compose.yaml

		
version: '3.9'
services:		
  fluentd:
    image: fluent/fluentd:latest
    container_name: fluentd
    hostname: fluentd.netkiller.cn
    restart: always
    volumes:
      - /opt/netkiller.cn/ops.netkiller.cn/fluentd/conf:/fluentd/etc
      - /var/log/fluentd:/var/log/fluentd
    ports:
      - "24224:24224"
      - "24224:24224/udp"
    environment:
      FLUENTD_CONF: fluentd.conf		
  api:
    image: openjdk:8
    container_name: api
    restart: always
    hostname: api.netkiller.cn
    extra_hosts:
      - cfca.netkiller.cn:139.196.170.132
      - raweb.netkiller.cn:139.196.170.132
      - eos.netkiller.cn:192.168.30.120
    environment:
      TZ: Asia/Shanghai
      JAVA_OPTS: -Xms1024m -Xmx4096m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
    ports:
      - 8088:8080
    volumes:
      - /opt/netkiller.cn/api.netkiller.cn:/app
      - /opt/netkiller.cn/api.netkiller.cn/logs:/app/logs
    working_dir: /app
    links:
      - fluentd
    logging:
      driver: "fluentd"
      options:
        fluentd-address: localhost:24224
        tag: api.netkiller.cn
    entrypoint: java -jar /app/api.netkiller.cn.jar
    command:
      --spring.profiles.active=test
      --server.port=8080		
		
			

	
<source>
  @type udp
  tag docker
  format json
  port 5160
</source>

<match docker>
  @type stdout
</match>
	
			

				
[root@netkiller ~]# cat /etc/fluent-bit/fluent-bit.conf | grep -v '#' | grep -v '^$'
[SERVICE]
    flush        1
    daemon       Off
    log_level    info
    parsers_file parsers.conf
    plugins_file plugins.conf
    http_server  Off
    http_listen  0.0.0.0
    http_port    2020
    storage.metrics on
[INPUT]
    Name        tcp
    Listen      0.0.0.0
    Port        5170
    Chunk_Size  32
    Buffer_Size 64
    Format      json
[OUTPUT]
    Name file
    Match *
    Path /opt/log
    Mkdir true			
				
				

启动 fluent-bit

				
[root@netkiller ~]# /opt/fluent-bit/bin/fluent-bit -c /etc/fluent-bit/fluent-bit.conf				
				
				

产生一条日志

				
[root@netkiller log]# echo '{"key 1": 123456789, "key 2": "abcdefg"}' | nc 127.0.0.1 5170				
				
				

观察日志

				
[root@netkiller log]# tail /opt/log/tcp.0 
tcp.0: [1666855978.575643295, {"key 1":123456789,"key 2":"abcdefg"}]