配置docker-compose日志以省略前置文本

Question

当我运行docker-compose up时，我得到以下日志：

kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:46Z","tags":["reporting","browser-driver","warning"],"pid":6,"message":"Enabling the Chromium sandbox provides an additional layer of protection."}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:46Z","tags":["reporting","warning"],"pid":6,"message":"Generating a random key for xpack.reporting.encryptionKey. To prevent pending reports from failing on restart, please set xpack.reporting.encryptionKey in kibana.yml"}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:46Z","tags":["status","plugin:reporting@7.3.1","info"],"pid":6,"state":"green","message":"Status changed from uninitialized to green - Ready","prevState":"uninitialized","prevMsg":"uninitialized"}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:46Z","tags":["info","task_manager"],"pid":6,"message":"Installing .kibana_task_manager index template version: 7030199."}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:46Z","tags":["info","task_manager"],"pid":6,"message":"Installed .kibana_task_manager index template: version 7030199 (API version 1)"}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:47Z","tags":["info","migrations"],"pid":6,"message":"Creating index .kibana_1."}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:47Z","tags":["info","migrations"],"pid":6,"message":"Pointing alias .kibana to .kibana_1."}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:47Z","tags":["info","migrations"],"pid":6,"message":"Finished in 254ms."}
kibana_1  | {"type":"log","@timestamp":"2019-09-09T21:41:47Z","tags":["listening","info"],"pid":6,"message":"Server running at http://0:5601"}

我可以使用一些配置以使其仅吐出JSON吗？ 我希望它在每行之前省略"kibana_1 | "部分。

当然，理想情况下，它可以使JSON成为该部分，例如{"source":"kibana_1", ...}

Answer 1

注意：不确定docker-compose是否支持此功能，但是您可以查看Docker日志记录驱动程序。

---

您可以做的是使用docker-compose logs -f的cut命令管道输出。

下面是一个示例：

docker-compose logs -f kibana | cut -d"|" -f2

..
 {"type":"log","@timestamp":"2019-08-11T03:44:01Z","tags":["status","plugin:xpack_main@6.8.1","info"],"pid":1,"state":"green","message":"Status changed from red to green - Ready","prevState":"red","prevMsg":"Request Timeout after 3000ms"}
 {"type":"log","@timestamp":"2019-08-11T03:44:01Z","tags":["status","plugin:graph@6.8.1","info"],"pid":1,"state":"green","message":"Status changed from red to green - Ready","prevState":"red","prevMsg":"Request Timeout after 3000ms"}
 {"type":"log","@timestamp":"2019-08-11T03:44:01Z","tags":["status","plugin:searchprofiler@6.8.1","info"],"pid":1,"state":"green","message":"Status changed from red to green - Ready","prevState":"red","prevMsg":"Request Timeout after 3000ms"}
..

cut -d"|" -f2 cut -d"|" -f2命令将查找| 字符，然后输出所有内容。

您可以通过删除前导空格来使它更进一步（尽管我确信有更好的方法可以做到这一点）。

docker-compose logs -f kibana | cut -d"|" -f2 | cut -d" " -f2

..
{"type":"log","@timestamp":"2019-08-11T03:47:53Z","tags":["status","plugin:maps@6.8.1","error"],"pid":1,"state":"red","message":"Status
{"type":"log","@timestamp":"2019-08-11T03:47:53Z","tags":["status","plugin:index_management@6.8.1","error"],"pid":1,"state":"red","message":"Status
{"type":"log","@timestamp":"2019-08-11T03:47:53Z","tags":["status","plugin:index_lifecycle_management@6.8.1","error"],"pid":1,"state":"red","message":"Status
..