Telegraf is a metric collection daemon that can collect metrics from various inputs and write them to different outputs, making it easily extensible. It has 90+ input and output data plug-ins, including the logparser plugin for parsing logs. The logparser plugin can parse standard format logs, custom log parsing, and patterns based on the popular "grok" patterns. InfluxDB supports streaming log event data to its database with out-of-the-box patterns for popular servers like Nginx and Apache. Telegraf's logparser plugin allows users to structure any log data into queryable and searchable metrics. With the logparser plugin, users can parse real access logs and write them into InfluxDB. The plugin also supports custom patterns, enabling users to customize log parsing according to their needs. By using Telegraf with InfluxDB, developers can collect and analyze log data in a scalable and efficient manner.