itzg/docker-minecraft-server

Add first-class JSON log output (Log4j2 JsonTemplateLayout) via env var

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#3,870 建立於 2026年1月14日

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enhancementhelp wanted

描述

Enhancement Type

Improve an existing feature

Describe the enhancement

Describe the problem / motivation Many log pipelines and docker observation tools work best with JSON in container stdout. Today the image primarily supports customizing PatternLayout via LOG_CONSOLE_FORMAT / LOG_FILE_FORMAT, which still produces unstructured text. (docker-minecraft-server.readthedocs.io)

Proposed enhancement Add an opt-in way to switch console (and optionally file) logs to JSON output using Log4j2’s JsonTemplateLayout. (logging.apache.org)

Suggested UX:

  • LOG_FORMAT=json (or LOG_LAYOUT=json-template)
  • LOG_JSON_TEMPLATE=<builtin name | path>

貢獻者指南

技術棧
shelljavadocker
領域
devopsobservability
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
fresh
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Familiarity with shell scriptingBasic knowledge of Log4jUnderstanding of Docker environment variables
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
75
研究方向
Investigate the existing LOG CONSOLE FORMAT and LOG FILE FORMAT environment variable handling in the Docker entrypoint scripts. Review the Log4j2 JsonTemplateLayout documentation to understand the required dependencies and configuration. Propose changes to the start scripts and log4j2.xml to support a new LOG FORMAT variable that switches to JSON output. Consider adding a built in JSON template or allowing a custom template path.