清空

cat /dev/null >json.log

 

docker-compose

nginx:   image: nginx:1.12.1   restart: always   logging:     driver: “json-file”     options:       max-size: “5g”

　　

 

全局设置

# vim /etc/docker/daemon.json{  "registry-mirrors": ["http://f613ce8f.m.daocloud.io"],  "log-driver":"json-file",  "log-opts": {"max-size":"500m", "max-file":"3"}}