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https://stackoverflow.com/questions/318 ... disk-space

Docker 1.8 has been released with a log rotation option. Adding:
when the container is launched does the trick. You can learn more at: https://docs.docker.com/engine/admin/logging/overview/

http://blog.51cto.com/soybean/1939164

举例：当tomcat容器的运行，容器占用空间越来越大，约1个月就会超过2G，如何解决？



步骤1：查看容器日志大小：
假设容器目录为/var/lib/docker/containers，那么执行如下命令

cd /var/lib/docker/containers #进入默认容器空间目录

du -sh * #统计文件大小
2.4G de92a5643f7ffb106f8abba21fc0f93996842917a52879153adc95a73312934a-json.log

#以上这个代表容器de92a5643的日志大小为2.4G



步骤2：重新运行容器，增加日志参数

docker run增加如下参数，限制生成的json.log单个文件大小和保留文件个数：
--log-opt max-size=10m --log-opt max-file=3