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DBA应用技巧中如何利用MySQL技能学习MongoDB，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
(1)、mongorestore恢复工具 我们先看一下此工具的帮助信息：
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | [root@localhost bin]# ./mongorestore --helpusage: ./mongorestore [options] [directory or filename to restore from]options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times for more
verbosity e.g. -vvvvv)
-h [ --host ] arg mongo host to connect to ( <set name>/s1,s2 for sets)
--port arg server port. Can also use --host hostname:port
--ipv6 enable IPv6 support (disabled by default)
-u [ --username ] arg username
-p [ --password ] arg password
--dbpath arg directly access mongod database files in the given
path, instead of connecting to a mongod server -
needs to lock the data directory, so cannot be used
if a mongod is currently accessing the same path
--directoryperdb if dbpath specified, each db is in a separate
directory
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
--objcheck validate object before inserting
--filter arg filter to apply before inserting
--drop drop each collection before import
--oplogReplay replay oplog for point-in-time restore[root@localhost bin]# |
例如我们先将”foo”库删除了：
| 1 2 3 4 5 6 7 8 9 10 11 12 | [root@localhost bin]# ./mongoMongoDB shell version: 1.8.1connecting to: test> use fooswitched to db foo> db.dropDatabase();{ "dropped" : "foo", "ok" : 1 }> show dbsadmin 0.0625GBlocal (empty)test 0.0625GB> |
然后下面我们将演示如何恢复这个库：
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | [root@localhost bin]# ./mongorestore --directoryperdb /data/dumpconnected to: 127.0.0.1Sun Apr 22 12:01:27 /data/dump/foo/t1.bsonSun Apr 22 12:01:27 going into namespace [foo.t1]Sun Apr 22 12:01:27 2 objects foundSun Apr 22 12:01:27 /data/dump/foo/t2.bsonSun Apr 22 12:01:27 going into namespace [foo.t2]Sun Apr 22 12:01:27 1 objects foundSun Apr 22 12:01:27 /data/dump/foo/system.users.bsonSun Apr 22 12:01:27 going into namespace [foo.system.users]Sun Apr 22 12:01:27 1 objects foundSun Apr 22 12:01:27 /data/dump/foo/system.indexes.bsonSun Apr 22 12:01:27 going into namespace [foo.system.indexes]Sun Apr 22 12:01:27 { name: "_id_", ns: "foo.system.users", key: { _id: 1 }, v: 0 }Sun Apr 22 12:01:27 { name: "_id_", ns: "foo.t2", key: { _id: 1 }, v: 0 }Sun Apr 22 12:01:27 { name: "_id_", ns: "foo.t1", key: { _id: 1 }, v: 0 }Sun Apr 22 12:01:27 3 objects found[root@localhost bin]# |
通过工具返回信息，我们可以看到foo中的数据已经被恢复回来了, 接下来我们到库里去验证一下：
| 1 2 3 4 5 6 7 8 9 10 11 | [root@localhost bin]# ./mongoMongoDB shell version: 1.8.1connecting to: test> use fooswitched to db foo> show collections;system.indexessystem.userst1t2> |
结果证明foo库表已经被成功恢复回来了。
关于DBA应用技巧中如何利用MySQL技能学习MongoDB问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注亿速云行业资讯频道了解更多相关知识。
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