Mongodb Backup and Recovery

One, backup data

[Email protected] ~]# mongodump-h localhost-d admin-o/home/qiuyuetao/2017-08-10t16:07:51.188+0800writing Admin.system.users to 2017-08-10t16:07:51.188+0800done dumping admin.system.users (3 documents) 2017-08-10t16:0 7:51.189+0800writing admin.system.version to 2017-08-10t16:07:51.190+0800done dumping admin.system.version (2 Documents) 2017-08-10t16:07:51.190+0800writing Admin. Firstcollection to 2017-08-10t16:07:51.190+0800writing Admin. Student to 2017-08-10t16:07:51.191+0800done dumping admin. Student (0 documents) 2017-08-10t16:07:51.191+0800done dumping Admin. Firstcollection (1 document)

Second, view the database and clear the data

> Show dbsadmin 0.000GBlocal 0.000GBmongodb 0.000gb> use adminswitched to DB admin> db.getcollectionnames ( # #查看admin库下有哪些表 ["Firstcollection", "Student", "System.users", "system.version"]> db. Firstcollection.find () #查看表数据 {"_id": ObjectId ("598c0c7f866edf4d34ddfe8e"), "name": "Jack", "Age": $ #清空表数据 > DB. Firstcollection.remove ({name: "Jack"}) Writeresult ({"nremoved": 1}) > > DB. Firstcollection.find () > ># #已经清空数据 > > Exitbye[[email protected] ~]# [[email protected] ~]#

Iii. Recovery of data

[[email protected] ~]# mongorestore -h localhost:27017 -d admin /home/ Qiuyuetao/admin2017-08-10t16:13:34.157+0800the --db and --collection args should  only be used when restoring from a BSON file. Other  Uses are deprecated and will not exist in the future; use  --nsinclude instead2017-08-10t16:13:34.158+0800building a list of collections  to restore from /home/qiuyuetao/admin dir2017-08-10T16:13:34.197+0800reading  Metadata for admin. firstcollection from /home/qiuyuetao/admin/firstcollection.metadata.json2017-08-10t16:13:34.197+ 0800restoring admin. Firstcollection from /home/qiuyuetao/admin/firstcollection.bson2017-08-10t16:13:34.199+0800reading  metadata for admin. Student from /home/qiuyuetao/admin/studenT.metadata.json2017-08-10t16:13:34.207+0800restoring admin. Student from /home/qiuyuetao/admin/student.bson2017-08-10t16:13:34.353+0800no indexes to  restore2017-08-10t16:13:34.353+0800finished restoring admin. firstcollection  (1 document) 2017-08-10t16:13:34.353+0800no indexes to  Restore2017-08-10t16:13:34.353+0800finished restoring admin. student  (0 documents) 2017-08-10t16:13:34.353+0800restoring users from /home/qiuyuetao /admin/system.users.bson2017-08-10t16:13:34.787+0800done  # #恢复完成 [[email protected] ~]# mongo  Login Verification mongodb shell version v3.4.6connecting to: mongodb:// 127.0.0.1:27017mongodb server version: 3.4.6server has startup warnings:  2017-07-24t14:29:11.787+0800 i storage  [initandlisten] 2017-07-24t14:29:11.787+0800  I STORAGE  [initandlisten] ** warning: using the xfs filesystem is strongly recommended with  the wiredtiger storage engine2017-07-24t14:29:11.787+0800 i storage  [ initandlisten] **          see http:// dochub.mongodb.org/core/prodnotes-filesystem2017-07-24t14:29:12.460+0800 i control  [ initandlisten] 2017-07-24t14:29:12.460+0800 i control  [initandlisten] **  warning: access control is not enabled for the database.2017-07-24t14 :29:12.460+0800 i control  [initandlisten] **           read and write access to data and configuration  is unrestricted.2017-07-24T14:29:12.460+0800 I CONTROL  [initandlisten]  2017-07-24t14:29:12.460+0800 i contrOl  [initandlisten] 2017-07-24t14:29:12.461+0800 i control  [initandlisten]  ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is  ' always '. 2017-07-24t14 :29:12.461+0800 i control  [initandlisten] **         We suggest setting it to  ' Never ' 2017-07-24t14:29:12.461+0800 i  control  [initandlisten] 2017-07-24t14:29:12.461+0800 i control  [ initandlisten] ** warning: /sys/kernel/mm/transparent_hugepage/defrag is  ' always '. 2017-07-24t14:29:12.461+0800 i control  [initandlisten] **         We suggest setting it to  ' Never ' 2017-07-24t14:29:12.461+0800  I CONTROL  [initandlisten] 2017-07-24T14:29:12.461+0800 I CONTROL   [initandlisten] ** wArning: soft rlimits too low. rlimits set to 1024 processes,  65535 files. number of processes should be at least 32767.5  : 0.5 times number of files.2017-07-24t14:29:12.461+0800 i control   [initandlisten] > use adminswitched to db admin> db. Firstcollection.find ()   # #查看表的内容, restored {  "_id"  : objectid ("598c0c7f866edf4d34ddfe8e"),   "name"  :  "Jack",  "Age"  : 22 }

At this point, MongoDB backup and recovery testing completed, there are questions message.

This article is from the "funny Brother Notes" blog, be sure to keep this source http://qiuyt.blog.51cto.com/1229789/1955172

Mongodb Backup and Recovery