Fluentd elasticsearch와 연결이 끊어질 때, buffer 설정

오류

[warn]: #0 failed to flush the buffer. retry_times=0 next_retry_time=2025-02-06 14:46:28 +0900 chunk="62d72c2b628c703009>

조치

<match myapp.logs>
  @type elasticsearch
  host elasticsearch-host
  port 9200
  logstash_format true
  <buffer>
    flush_mode interval
    flush_interval 5s
    retry_max_times 10
    retry_wait 3s
    chunk_limit_size 8MB
    queue_limit_length 128
  </buffer>
</match>