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备份
[root@localhost bin]# ./mongodump -d my_mongodb connected to: 127.0.0.1 DATABASE: my_mongodb to dump/my_mongodb my_mongodb.system.indexes to dump/my_mongodb/system.indexes.bson 1 objects my_mongodb.user to dump/my_mongodb/user.bson 2 objects [root@localhost bin]# ll 总计 67648 -rwxr-xr-x 1 root root 7508756 2011-04-06 bsondump drwxr-xr-x 3 root root 4096 04-10 23:54 dump -rwxr-xr-x 1 root root 2978016 2011-04-06 mongo
此时,会在当前目录下创建一个dump目录,用于存放备份出来的文件,当然也可以指定备份存放的目录。
root@localhost bin]# ./mongodump -d my_mongodb -o my_mongodb_dump connected to: 127.0.0.1 DATABASE: my_mongodb to my_mongodb_dump/my_mongodb my_mongodb.system.indexes to my_mongodb_dump/my_mongodb/system.indexes.bson 1 objects my_mongodb.user to my_mongodb_dump/my_mongodb/user.bson 2 objects [root@localhost bin]#
这个例子中将备份文件存在了当前目录下的my_mongodb_dump目录下
恢复
由于刚刚已经做了备份,所以我们先讲库my_mongodb删除掉
> use my_mongodb switched to db my_mongodb > db.dropDatabase() { "dropped" : "my_mongodb", "ok" : 1 } > show dbs admin (empty) local (empty) test (empty) >
接下来,我们进行数据恢复
[root@localhost bin]# ./mongorestore -d my_mongodb my_mongodb_dump/ connected to: 127.0.0.1 Wed Apr 11 00:03:03 my_mongodb_dump/my_mongodb/user.bson Wed Apr 11 00:03:03 going into namespace [my_mongodb.user] Wed Apr 11 00:03:03 2 objects found Wed Apr 11 00:03:03 my_mongodb_dump/my_mongodb/system.indexes.bson Wed Apr 11 00:03:03 going into namespace [my_mongodb.system.indexes] Wed Apr 11 00:03:03 { name: "_id_", ns: "my_mongodb.user", key: { _id: 1 }, v: 0 } Wed Apr 11 00:03:03 1 objects found [root@localhost bin]#
经验证数据库又回来了,其实要想恢复数据库,大可不必先删除my_mongodb库,只要说明-drop参数,就可以在恢复的时候先删除表然后再向表中插入数据。
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原文地址:http://www.cnblogs.com/tomcatx/p/4245580.html