section <format> is not used in <filter> of grok plugin

[xhanj02]

section is not used in of grok plugin

from fluent-plugin-grok-parser.

[okkez]

Prelase read the documentation https://docs.fluentd.org/filter/parser

[cosmo0920]

Fluentd documentation says that using <parse> directive is needed instead of format parameter:

ref: https://docs.fluentd.org/filter/parser

<filter>
  @type parser # https://github.com/tagomoris/fluent-plugin-parser
  key_name log

  custom_pattern_path /fluentd/etc/patterns
  reserve_data true # keep the original attributes - they'll be used by record_transformer later

  <parse>
    @type grok
    # The format is specified in https://plus4u.net/ues/sesm?SessFree=ues%253A%255B29537617%255D%253A%255B44191586301754938%255D%253A
    <grok>
      pattern %{LOGSTORE_RECORD_TYPE:record_type}%{SPACE}%{LOGSTORE_LOG_LEVEL:log_level}%{SPACE}%{GREEDYDATA:message}
    </grok>
    <grok>
      pattern %{LOGSTORE_LOG_LEVEL:log_level}%{SPACE}%{GREEDYDATA:message}
    </grok>
    <grok>
      pattern %{GREEDYDATA:message}
    </grok>
  </parse>
</filter>