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 --help usage: ./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]# ./mongo MongoDB shell version: 1.8.1 connecting to : test > use foo switched to db foo > db.dropDatabase(); { "dropped" : "foo" , "ok" : 1 } > show dbs admin 0.0625GB local (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/dump connected to : 127.0.0.1 Sun Apr 22 12:01:27 /data/dump/foo/t1.bson Sun Apr 22 12:01:27 going into namespace [foo.t1] Sun Apr 22 12:01:27 2 objects found Sun Apr 22 12:01:27 /data/dump/foo/t2.bson Sun Apr 22 12:01:27 going into namespace [foo.t2] Sun Apr 22 12:01:27 1 objects found Sun Apr 22 12:01:27 /data/dump/foo/system.users.bson Sun Apr 22 12:01:27 going into namespace [foo.system.users] Sun Apr 22 12:01:27 1 objects found Sun Apr 22 12:01:27 /data/dump/foo/system.indexes.bson Sun 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]# ./mongo MongoDB shell version: 1.8.1 connecting to : test > use foo switched to db foo > show collections; system.indexes system.users t1 t2 > |
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。
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。