Docker overlay 清理空间

docker 生产环境

• overlay2 (挂载高新能磁盘/大容量）
• 运行容器，需要指定日志格式/大小。

rabbit 容器日志占满磁盘

myrabbit

docker run 指定日志大小:

docker run --name myrabbit -d --log-driver="json-file" --log-opt max-size=10m  -p 35672:5672 -p 45672:15672 -e RABBITMQ_DEFAULT_USER=admin -e RABBITMQ_DEFAULT_PASS=xxxx rabbitmq:3.8.11-management

log

find log file:

root@testnode:~# docker inspect myrabbit | grep log
        "LogPath": "/var/lib/docker/containers/61926159b493cad091e92e2fe0810adeb418a9797dd24421cf146aea7e604235/61926159b493cad091e92e2fe0810adeb418a9797dd24421cf146aea7e604235-json.log",

clean log

echo "" > /var/lib/xxxx-json.log

docker prune

root@testnode:~# docker system prune
WARNING! This will remove:
  - all stopped containers
  - all networks not used by at least one container
  - all dangling images
  - all dangling build cache

Are you sure you want to continue? [y/N] y
Total reclaimed space: 0B
root@testnode:~#