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初始设置数据库的密码： root/123456 ，表名为：testDB
1. 查询docker的运行情况 docker ps 2. 进入mongodb 的容器 docker exec -it [容器ID] bash 3.
创建一个目录为dump mkdir dump 4. 进入db目录 cd data/db 5. 备份数据（path：data/db） mongodump -h
127.0.0.1 --port 27017 -u='root' -p='123456' -d testDB -o /dump 6.
手动删除数据或者删除testDB整个db 7. 恢复数据（path：data/db） mongorestore -h 127.0.0.1:27017
-u='root' -p='123456' -d testDB /dump/testDB
具体操作如下：
此操作都是在容器内部， 如果需要将数据移到本地，那操作如下。（建议此操作在创建mongodb容器的之前就可以预留了）
docker-compose.yml
version: '2' services: mongo-container: image: mongo:3.4 container_name:
mongodb environment: - MONGO_INITDB_ROOT_USERNAME=root -
MONGO_INITDB_ROOT_PASSWORD=123456 ports: - "27017:27017" volumes: -
"./data/mongo:/data/db" -
"./data/mongo-entrypoint/:/docker-entrypoint-initdb.d/" - "./copydata:/dump/"
command: mongod
文件中就是 ./copydata:/dump/ 就是， 本地：容器 的映射关系。
如果刚刚开始 没有做映射关系，那也没有关系。重启docker 即可
1. 关闭docker docker-compose down 2. 重启docker docker-compose up -d 本地的dump 以及
容器内部dump 这个文件都是自动生成。
