format parameter for input plugins (ex: in_tail, in_syslog, in_tcp and in_udp) cannot parse the user's custom data format (for example, a context-dependent grammar that can't be parsed with a regular expression). To address such cases. Fluentd has a pluggable system that enables the user to create their own parser formats.
Write a custom format plugin. See here for more information.
From any input plugin that supports the "format" field, call the
custom plugin by its name.
Here is a simple example to read Nginx access logs using
<source>@type tailpath /path/to/input/fileformat nginxkeep_time_key true</source>
If you are familiar with grok patterns, grok-parser plugin is useful. Use
< 1.0.0 versions for fluentd v0.12.
If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is a open source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.