logstash-plugins/logstash-patterns-core

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2186 stars · 961 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Logstash plugin providing the built-in grok pattern definitions used to parse unstructured log data into structured fields. It ships the canonical regex pattern library that the Logstash grok filter matches against.

Use cases

• parse apache or nginx access logs into fields
• extract structured data from syslog messages
• write custom grok patterns for application logs
• parse timestamps and log levels from raw log lines
• normalize heterogeneous log formats in an ELK stack

When to choose

• you use Logstash's grok filter and need its standard pattern library
• you want to define custom grok patterns alongside the built-in ones
• you are building log ingestion pipelines in the Elastic Stack

When to avoid

• you parse logs outside of Logstash and just want a standalone grok library
• you need a general-purpose regex tool rather than log pattern definitions
• you use a log processor with its own parsing DSL like Fluentd or Vector

Facets

plugin · maturity stable

parser logging developer-tools developer-tools monitoring jvm ruby self-hosted logstash grok regex-patterns log-parsing elastic-stack data-engineering

Member repositories

For agents

markdown · JSON · MCP: product_card(name="logstash-plugins/logstash-patterns-core")