1、进入容器文件的存放目录 ，并查看某一个容器的文件大小
[root@auto ~]# [root@auto ~]# cd /var/lib/docker/containers [root@auto containers]# du -sh * 32K 023e0d7025e56a77e562a306a7990808bea7ddc0f75d5d2e5bbfe69c05ad3f5c 32K 03ef1a60286ab4598aeb2dcff5fbbd373a021405eca307219ac502c9bd5fd96e 32K 1d906d1c611f8272e1a7ba59f0b997453a5168557ffb4075707e59498e63c25f 32K 346ba005ae6d973f0546c2866420ed08cf23f9412203275208ab21623155a453 576K 3bd43f437f2a7f142ae21046e02fb66a5daa3083da2d7833a82c509223a7b126 920K 6da5bf0c5edc3a051a722d133e58ca1c6dccc583df6d8c6f1f22c7abcb313b10 14M 80f5746d5a85a9256e9dd92cd7c7042561ec0f6f5efa8e219b25395a0fa00b5d 3.6M 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16 94M a70779e0f1a86a62f75f07bc4506a758d27b9af08a945344c1a6fd5ff1f77b05 624K aa83cf4809489f02db75c7057caab74818b81275b8a0ed2c44f526bc067de228 28K d27e04e08e946d3abcc85080944c8833315ca550b06a5031d3a552554332294e
2、进入某一个具体的容器比如：9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16
[root@auto containers]# cd 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16 [root@auto 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16]# du -sh * 3.6M 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16-json.log 8.0K config.v2.json 4.0K hostconfig.json 4.0K hostname 4.0K hosts 4.0K resolv.conf 0 shm [root@auto 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16]#
3、将日志文件清空
[root@auto 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16]# [root@auto 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16]# cat /dev/null>9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16-json.log [root@auto 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16]# du -sh * 0 9e20d3c20592021f5e16de7ee9314a20bc82ba6cea626765d04e94a28e03ba16-json.log 8.0K config.v2.json 4.0K hostconfig.json 4.0K hostname 4.0K hosts 4.0K resolv.conf 0 shm
4、批量清理
#!/bin/bash logfiles=$(find /var/lib/docker/containers/ -type f -name *-json.log) for logfile in $logfiles do cat /dev/null > $logfile done
5、docker-comose里面控制日志文件
mysql: image: mysql:latest container_name: mysql restart: always logging: driver: "json-file" options: max-size: "10m" max-file: "5"
上面控制日志文件每个最大10M，最大5个文件
原文：https://www.cnblogs.com/lonelyxmas/p/13139239.html