[SERVICE]
    Flush                 1
    Log_Level             info
    Parsers_File          parsers.conf

    # 方便调试 Fluent Bit 自身状态；不要对公网暴露
    HTTP_Server           On
    HTTP_Listen           0.0.0.0
    HTTP_Port             2020

    # 可选：给 Fluent Bit 文件缓冲目录，配合 compose 里的 volume
    storage.path          /buffers
    storage.sync          normal
    storage.checksum      off
    storage.backlog.mem_limit 64M

# Python SDK / OpenTelemetry SDK 发到这里：
#   http://vmauth:8427/v1/logs
#   http://vmauth:8427/v1/metrics
# vmauth 会转发到 fluentbit:4318
[INPUT]
    Name                  opentelemetry
    Listen                0.0.0.0
    Port                  4318

    # OTLP/HTTP 通常期望 200；Fluent Bit 默认是 201
    Successful_Response_Code 200

    # 保持默认行为：/v1/logs -> v1_logs, /v1/metrics -> v1_metrics
    Tag_From_Uri          true

    Buffer_Chunk_Size     1M
    Buffer_Max_Size       10M
    Threaded              On

# Python SDK 发来的 metrics -> VictoriaMetrics remote_write
[OUTPUT]
    Name                  prometheus_remote_write
    Match                 *
    Host                  victoriametrics
    Port                  8428
    Uri                   /api/v1/write

    # 可选公共 label，便于区分来源
    Add_Label             otel_pipeline fluent-bit
    Workers               2

# Python SDK 发来的 logs -> vlagent -> VictoriaLogs
[OUTPUT]
    Name                  opentelemetry
    Match                 *
    Host                  vlagent
    Port                  9429

    Logs_Uri              /insert/opentelemetry/v1/logs

    # VictoriaLogs 摄取日志时的字段映射。
    # Python OTel log body 通常能被自动处理；这里保留多个候选字段更稳。
    Header                VL-Msg-Field body,Body,message,msg,log,_msg

    # 只把低基数字段作为 stream fields，避免 path、status_code 这类字段爆炸。
    Header                VL-Stream-Fields service.name,service.namespace,service.version,deployment.environment,host.name

    Compress              gzip
    Workers               2

[OUTPUT]
    Name   stdout
    Match  *