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現象

同事聯系說部署在虛擬機里面的用docker啟動xxl-job的服務不好使了，需要解決一下，我就登陸虛擬機檢查，發現根目錄滿了，就一層一層的找，發現是<container_id>-json.log超級大，追空之后重啟服務就好使了。
/var/lib/docker/containers/<container_id>/<container_id>-json.log

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一、查找源頭

[root@xxl-job docker]# du -sh *
88K	buildkit
16G	containers
4.0K	engine-id
444K	image
48K	network
470M	overlay2
0	plugins
0	runtimes
0	swarm
0	tmp
0	tmp-old
24K	volumes
[root@xxl-job docker]# cd containers/
[root@xxl-job containers]# ls
98d41152c3fccd36f21445751249927ade16d8c56b2adedaa2733b3c210a7c68
[root@xxl-job containers]# cd 98d41152c3fccd36f21445751249927ade16d8c56b2adedaa2733b3c210a7c68/
[root@xxl-job 98d41152c3fccd36f21445751249927ade16d8c56b2adedaa2733b3c210a7c68]# du -sh *
16G	98d41152c3fccd36f21445751249927ade16d8c56b2adedaa2733b3c210a7c68-json.log
0	checkpoints
4.0K	config.v2.json
4.0K	hostconfig.json
4.0K	hostname
4.0K	hosts
0	mounts
4.0K	resolv.conf
4.0K	resolv.conf.hash

二、分析

tail -f 看了一下這個文件，感覺就是服務日志沒有轉到日志目錄下導致沒有被日志的定時清理機制管理上。所以越來越大。

[root@xxl-job 98d41152c3fccd36f21445751249927ade16d8c56b2adedaa2733b3c210a7c68]# tail -f 98d41152c3fccd36f21445751249927ade16d8c56b2adedaa2733b3c210a7c68-json.log 
{"log":"16:45:10.202 logback [main] INFO  o.s.b.a.w.s.WelcomePageHandlerMapping - Adding welcome page template: index\n","stream":"stdout","time":"2025-05-28T08:45:10.202987974Z"}
{"log":"16:45:10.249 logback [xxl-job, admin JobRegistryMonitorHelper-registryMonitorThread] INFO  com.zaxxer.hikari.HikariDataSource - HikariCP - Start completed.\n","stream":"stdout","time":"2025-05-28T08:45:10.249966349Z"}
{"log":"16:45:10.799 logback [main] INFO  o.s.b.a.e.web.EndpointLinksResolver - Exposing 1 endpoint(s) beneath base path '/actuator'\n","stream":"stdout","time":"2025-05-28T08:45:10.800971863Z"}
{"log":"16:45:10.826 logback [main] INFO  o.a.coyote.http11.Http11NioProtocol - Starting ProtocolHandler [\"http-nio-9100\"]\n","stream":"stdout","time":"2025-05-28T08:45:10.8269339Z"}
{"log":"16:45:10.854 logback [main] INFO  o.a.c.c.C.[.[.[/xxl-job-admin] - Initializing Spring DispatcherServlet 'dispatcherServlet'\n","stream":"stdout","time":"2025-05-28T08:45:10.854915167Z"}
{"log":"16:45:10.854 logback [main] INFO  o.s.web.servlet.DispatcherServlet - Initializing Servlet 'dispatcherServlet'\n","stream":"stdout","time":"2025-05-28T08:45:10.854980125Z"}
{"log":"16:45:10.855 logback [main] INFO  o.s.web.servlet.DispatcherServlet - Completed initialization in 0 ms\n","stream":"stdout","time":"2025-05-28T08:45:10.856876273Z"}
{"log":"16:45:10.857 logback [main] INFO  o.s.b.w.e.tomcat.TomcatWebServer - Tomcat started on port(s): 9100 (http) with context path '/xxl-job-admin'\n","stream":"stdout","time":"2025-05-28T08:45:10.858898162Z"}
{"log":"16:45:10.887 logback [main] INFO  c.x.job.admin.XxlJobAdminApplication - Started XxlJobAdminApplication in 5.392 seconds (JVM running for 6.573)\n","stream":"stdout","time":"2025-05-28T08:45:10.89199265Z"}
{"log":"16:45:14.001 logback [xxl-job, admin JobScheduleHelper#scheduleThread] INFO  c.x.j.a.c.thread.JobScheduleHelper - \u003e\u003e\u003e\u003e\u003e\u003e\u003e\u003e\u003e init xxl-job admin scheduler success.\n","stream":"stdout","time":"2025-05-28T08:45:14.003073573Z"}

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總結

第一次遇到這種問題，記錄一下