28、MongoDB 备份数据( mongodump )

MongoDB mongodump 脚本命令可以导出所有数据到指定目录中

语法

MongoDB mongodump 脚本命令语法如下：

mongodump -h dbhost -d dbname -o dbdirectory

参数说明

• -h： 需要导出 MongDB 数据所在的服务器地址
  例如 127.0.0.1 ，当然也可以同时指定端口号：127.0.0.1:27017
• -d： 需要备份的数据库，例 test
• -o： 备份的数据存放位置，例如：/mnt/data/backup/mongodb/
  该目录需要提前建立，在备份完成后，系统自动在 mongodb 目录下建立一个 test 目录，这个目录里面存放该数据库实例的备份数据

mongodump 命令可选参数

1、 mongodump–hostHOST_NAME–portPORT_NUMBER；

该命令将备份所有 MongoDB 数据

    mongodump --host db1.souyunku.cn --port 27017

2、 mongodump–dbpathDB_PATH–outBACKUP_DIRECTORY；

该命令备份指定的 DB\_PATH 数据库到 BACKUP\_DIRECTORY 目录

    mongodump --dbpath /data/db/ --out /data/backup/

3、 mongodump–collectionCOLLECTION–dbDB_NAME；

该命令将备份指定数据库 DB\_NAME 的 COLLECTION 集合

    mongodump --collection lession --db test

范例

1、 首先使用–port27017启动MongoDB服务；
2、 打开命令提示符窗口，输入命令mongodump；

    $ mongodump

执行以上命令后，客户端会连接到 ip 为 127.0.0.1 端口号为 27017 的 MongoDB 服务上，然后备份所有数据到 bin/dump/ 目录中

命令输出结果如下

    $ mongodump
    2017-10-24T07:11:25.229+0800    writing admin.system.indexes to 
    2017-10-24T07:11:25.236+0800    done dumping admin.system.indexes (3 documents)
    2017-10-24T07:11:25.236+0800    writing admin.system.users to 
    2017-10-24T07:11:25.242+0800    done dumping admin.system.users (1 document)
    2017-10-24T07:11:25.242+0800    writing admin.system.version to 
    2017-10-24T07:11:25.244+0800    done dumping admin.system.version (1 document)
    2017-10-24T07:11:25.244+0800    writing nodebb.objects to 
    2017-10-24T07:11:25.244+0800    writing shandai.s_order_log to 
    2017-10-24T07:11:25.244+0800    writing rbtj.rb_visit_log to 
    2017-10-24T07:11:25.244+0800    writing gridfs.fs.chunks to 
    2017-10-24T07:11:25.251+0800    done dumping rbtj.rb_visit_log (92 documents)
    2017-10-24T07:11:25.251+0800    writing log.pushlog to 
    2017-10-24T07:11:25.251+0800    done dumping shandai.s_order_log (105 documents)
    2017-10-24T07:11:25.251+0800    writing test.lession to 
    2017-10-24T07:11:25.252+0800    done dumping test.lession (3 documents)
    2017-10-24T07:11:25.252+0800    writing souyunku.language to 
    2017-10-24T07:11:25.253+0800    done dumping log.pushlog (8 documents)
    2017-10-24T07:11:25.253+0800    writing souyunku.col to 
    2017-10-24T07:11:25.255+0800    done dumping nodebb.objects (327 documents)
    2017-10-24T07:11:25.255+0800    writing souyunku.products to 
    2017-10-24T07:11:25.255+0800    done dumping souyunku.language (2 documents)
    2017-10-24T07:11:25.255+0800    writing gridfs.fs.files to 
    2017-10-24T07:11:25.257+0800    done dumping souyunku.col (1 document)
    2017-10-24T07:11:25.257+0800    writing test.col to 
    2017-10-24T07:11:25.257+0800    done dumping souyunku.products (1 document)
    2017-10-24T07:11:25.257+0800    writing souyunku.counters to 
    2017-10-24T07:11:25.258+0800    done dumping gridfs.fs.files (1 document)
    2017-10-24T07:11:25.258+0800    writing souyunku.mycapped_log to 
    2017-10-24T07:11:25.259+0800    done dumping souyunku.counters (1 document)
    2017-10-24T07:11:25.259+0800    writing rrs_result.content to 
    2017-10-24T07:11:25.259+0800    done dumping test.col (1 document)
    2017-10-24T07:11:25.259+0800    writing nodebb.sessions to 
    2017-10-24T07:11:25.260+0800    done dumping souyunku.mycapped_log (0 documents)
    2017-10-24T07:11:25.260+0800    writing souyunku.lession to 
    2017-10-24T07:11:25.260+0800    done dumping rrs_result.content (0 documents)
    2017-10-24T07:11:25.261+0800    done dumping nodebb.sessions (0 documents)
    2017-10-24T07:11:25.261+0800    done dumping souyunku.lession (0 documents)
    2017-10-24T07:11:25.312+0800    done dumping gridfs.fs.chunks (19 documents)