遇到一个坑写在这没准有人遇到。Docker在debian 9上安装时没创建docker_gwbridge,它用于容器和主机通讯,不用overlay模式网络没事,用了报错"could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network”手工创建之后解决,网上没有一个答案写对。 https://twitter.com/virushuo/status/1113855217441878017