分布式文檔存儲數(shù)據(jù)庫之MongoDB備份與恢復的實踐詳解
更新時間：2020年11月17日 09:07:36 作者：Linux-1874
這篇文章主要介紹了分布式文檔存儲數(shù)據(jù)庫之MongoDB備份與恢復,本文給大家介紹的非常詳細，對大家的學習或工作具有一定的參考借鑒價值，需要的朋友可以參考下
前文我們聊了下分布式文檔存儲數(shù)據(jù)庫之MongoDB訪問控制，回顧請參考http://chabaoo.cn/article/199848.htm；今天我們來了解下mongodb的備份與恢復
為什么要備份？
備份的目的是對數(shù)據(jù)做冗余的一種方式，它能夠讓我們在某種情況下保證最少數(shù)據(jù)的丟失；之前我們對mongodb做副本集也是對數(shù)據(jù)做冗余，但是這種在副本集上做數(shù)據(jù)冗余僅僅是針對系統(tǒng)故障或服務異常等一些非人為的故障發(fā)生時，保證數(shù)據(jù)服務的可用性；它不能夠避免人為的誤操作；為了使得數(shù)據(jù)的安全，將數(shù)據(jù)損失降低到最小，我們必須對數(shù)據(jù)庫周期性的做備份；
常用備份方法
提示：上圖主要描述了mongodb數(shù)據(jù)庫上常用備份策略，我們可以邏輯備份，邏輯備份是將數(shù)據(jù)庫中的數(shù)據(jù)導出成語句，通常使用專用工具導出和導入來完成一次備份與恢復；其次我們也可以物理備份，簡單講物理備份就是把數(shù)據(jù)庫文件打包，備份；恢復時直接將對應的數(shù)據(jù)庫文件解壓恢復即可；另外一種快速物理備份的方式就是給數(shù)據(jù)拍快照，拍快照可以將數(shù)據(jù)保存為當前拍快照時的狀態(tài)；如果我們要進行恢復直接恢復快照即可；
mongodb邏輯備份和物理備份比較
提示：從上圖描述可以看出總體上來看物理備份效率和恢復效率要高于邏輯；物理備份效率高于邏輯備份，其主要原因是邏輯備份是通過數(shù)據(jù)庫接口將數(shù)據(jù)讀取出來，然后保存為對應格式的文件，而物理備份只需要將數(shù)據(jù)文件直接打包備份，不需要一條一條的讀取數(shù)據(jù)，然后寫入到其他文件，這中間就省去了讀寫過程，所以物理備份效率高；恢復也是類似的過程，物理恢復也是省去了讀寫的過程；
mongodb邏輯備份工具
在mongodb中使用邏輯備份的工具有兩組，第一組是mongodump/mongorestore，使用mongodump/mongorestore這組工具來邏輯的備份數(shù)據(jù)，它備份出來的數(shù)據(jù)是BSON格式，BSON是一種二進制格式，通常無法使用文本編輯器直接打開查看其內(nèi)容，對人類的可讀性較差，但它的優(yōu)點是保存的文件體積要??；使用這組命令導出的數(shù)據(jù)，在恢復是依賴mongodb版本,不同版本導出的BSON格式略有不同，所以恢復時，可能存在版本不同而導致恢復數(shù)據(jù)失敗的情況；另外一組是mongoexport/mongoimport，這組工具導出的數(shù)據(jù)是json格式的數(shù)據(jù)，通常我們可以使用文本編輯器打開直接查看，對人類的可讀性較好，但體積相對BSON格式的數(shù)據(jù)要大，恢復時不依賴版本；所以跨版本備份要先查看下對應版本的兼容性，如果兼容使用mongodump/mongorestore，不兼容的話建議使用mongoexport/mongoimport；這里需要注意一點，JSON格式雖然可讀性很好，也很通用，但是它只是保留了數(shù)據(jù)部分，而沒有保留索引，賬戶等基礎(chǔ)信息，在使用是應該注意；
使用mongodump備份數(shù)據(jù)
插入數(shù)據(jù)
> use testdb
switched to db testdb
> for(i=1;i<=1000;i++) db.test.insert({id:i,name:"test"+i,age:(i%120),classes:(i%25)})
WriteResult({ "nInserted" : 1 })
> show tables
test
> db.test.findOne()
{
"_id" : ObjectId("5fb130da012870b3c8e3c4ad"),
"id" : 1,
"name" : "test1",
"age" : 1,
"classes" : 1
}
> db.test.count()
1000
>
備份所有數(shù)據(jù)庫
[root@node11 ~]# mongodump -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -o ./node12_mongodb_full_backup 2020-11-15T21:47:45.439+0800 writing admin.system.users to node12_mongodb_full_backup/admin/system.users.bson 2020-11-15T21:47:45.442+0800 done dumping admin.system.users (4 documents) 2020-11-15T21:47:45.443+0800 writing admin.system.version to node12_mongodb_full_backup/admin/system.version.bson 2020-11-15T21:47:45.447+0800 done dumping admin.system.version (2 documents) 2020-11-15T21:47:45.448+0800 writing testdb.test to node12_mongodb_full_backup/testdb/test.bson 2020-11-15T21:47:45.454+0800 done dumping testdb.test (1000 documents) [root@node11 ~]# ls node12_mongodb_full_backup [root@node11 ~]# ll node12_mongodb_full_backup/ total 0 drwxr-xr-x 2 root root 128 Nov 15 21:47 admin drwxr-xr-x 2 root root 49 Nov 15 21:47 testdb [root@node11 ~]# tree node12_mongodb_full_backup/ node12_mongodb_full_backup/ ├── admin │ ├── system.users.bson │ ├── system.users.metadata.json │ ├── system.version.bson │ └── system.version.metadata.json └── testdb ├── test.bson └── test.metadata.json 2 directories, 6 files [root@node11 ~]#
提示：-u用于指定用戶，-p指定對應用戶的密碼，-h指定數(shù)據(jù)庫地址，--authenticationDatabase 指定驗證用戶和密碼對應的數(shù)據(jù)庫 -o指定要存放備份文件的目錄名稱；
只備份單個testdb數(shù)據(jù)庫
[root@node11 ~]# mongodump -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb -o ./node12_testdb 2020-11-15T21:53:36.523+0800 writing testdb.test to node12_testdb/testdb/test.bson 2020-11-15T21:53:36.526+0800 done dumping testdb.test (1000 documents) [root@node11 ~]# tree ./node12_testdb ./node12_testdb └── testdb ├── test.bson └── test.metadata.json 1 directory, 2 files [root@node11 ~]#
提示：-d用戶指定要備份的數(shù)據(jù)庫名稱；
只備份testdb下的test集合
[root@node11 ~]# mongodump -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb -c test -o ./node12_testdb_test-collection 2020-11-15T21:55:48.217+0800 writing testdb.test to node12_testdb_test-collection/testdb/test.bson 2020-11-15T21:55:48.219+0800 done dumping testdb.test (1000 documents) [root@node11 ~]# tree ./node12_testdb_test-collection ./node12_testdb_test-collection └── testdb ├── test.bson └── test.metadata.json 1 directory, 2 files [root@node11 ~]#
提示：-c用于指定要備份的集合（collection）名稱；
壓縮備份testdb庫
[root@node11 ~]# mongodump -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb --gzip -o ./node12_mongodb_testdb-gzip 2020-11-15T22:00:52.268+0800 writing testdb.test to node12_mongodb_testdb-gzip/testdb/test.bson.gz 2020-11-15T22:00:52.273+0800 done dumping testdb.test (1000 documents) [root@node11 ~]# tree ./node12_mongodb_testdb-gzip ./node12_mongodb_testdb-gzip └── testdb ├── test.bson.gz └── test.metadata.json.gz 1 directory, 2 files [root@node11 ~]#
提示：可以看到使用壓縮，只需要加上--gzip選項即可，備份出來的數(shù)據(jù)就是.gz后綴結(jié)尾的壓縮文件；
壓縮備份testdb庫下的test集合
[root@node11 ~]# mongodump -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb -c test --gzip -o ./node12_mongodb_testdb-test-gzip 2020-11-15T22:01:31.492+0800 writing testdb.test to node12_mongodb_testdb-test-gzip/testdb/test.bson.gz 2020-11-15T22:01:31.500+0800 done dumping testdb.test (1000 documents) [root@node11 ~]# tree ./node12_mongodb_testdb-test-gzip ./node12_mongodb_testdb-test-gzip └── testdb ├── test.bson.gz └── test.metadata.json.gz 1 directory, 2 files [root@node11 ~]#
使用mongorestore恢復數(shù)據(jù)
在node12上刪除testdb
> db
testdb
> db.dropDatabase()
{ "dropped" : "testdb", "ok" : 1 }
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
>
全量恢復所有數(shù)據(jù)庫
[root@node11 ~]# mongorestore -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin --drop ./node12_mongodb_full_backup 2020-11-15T22:07:35.465+0800 preparing collections to restore from 2020-11-15T22:07:35.467+0800 reading metadata for testdb.test from node12_mongodb_full_backup/testdb/test.metadata.json 2020-11-15T22:07:35.475+0800 restoring testdb.test from node12_mongodb_full_backup/testdb/test.bson 2020-11-15T22:07:35.486+0800 no indexes to restore 2020-11-15T22:07:35.486+0800 finished restoring testdb.test (1000 documents, 0 failures) 2020-11-15T22:07:35.486+0800 restoring users from node12_mongodb_full_backup/admin/system.users.bson 2020-11-15T22:07:35.528+0800 1000 document(s) restored successfully. 0 document(s) failed to restore. [root@node11 ~]#
提示：--drop用于指定，恢復是如果對應數(shù)據(jù)庫或者colleciton存在，則先刪除然后在恢復，這樣做的目的是保證恢復的數(shù)據(jù)和備份的數(shù)據(jù)一致；
驗證：登錄192.168.0.52：27017查看對應testdb數(shù)據(jù)庫是否恢復？
[root@node11 ~]# mongo -utom -p123456 192.168.0.52:27017/admin
MongoDB shell version v4.4.1
connecting to: mongodb://192.168.0.52:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("af96cb64-a2a4-4d59-b60a-86ccbbe77e3e") }
MongoDB server version: 4.4.1
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
https://docs.mongodb.com/
Questions? Try the MongoDB Developer Community Forums
https://community.mongodb.com
---
The server generated these startup warnings when booting:
2020-11-15T20:42:23.774+08:00: ***** SERVER RESTARTED *****
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
---
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
testdb 0.000GB
> use testdb
switched to db testdb
> show collections
test
> db.test.count()
1000
> db.test.findOne()
{
"_id" : ObjectId("5fb130da012870b3c8e3c4ad"),
"id" : 1,
"name" : "test1",
"age" : 1,
"classes" : 1
}
>
恢復單個庫
刪除testdb庫
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
testdb 0.000GB
> use testdb
switched to db testdb
> db.dropDatabase()
{ "dropped" : "testdb", "ok" : 1 }
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
>
使用mongorestore恢復testdb庫
[root@node11 ~]# mongorestore -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb --drop ./node12_testdb/testdb/
2020-11-15T22:29:03.718+0800 The --db and --collection flags are deprecated for this use-case; please use --nsInclude instead, i.e. with --nsInclude=${DATABASE}.${COLLECTION}
2020-11-15T22:29:03.718+0800 building a list of collections to restore from node12_testdb/testdb dir
2020-11-15T22:29:03.719+0800 reading metadata for testdb.test from node12_testdb/testdb/test.metadata.json
2020-11-15T22:29:03.736+0800 restoring testdb.test from node12_testdb/testdb/test.bson
2020-11-15T22:29:03.755+0800 no indexes to restore
2020-11-15T22:29:03.755+0800 finished restoring testdb.test (1000 documents, 0 failures)
2020-11-15T22:29:03.755+0800 1000 document(s) restored successfully. 0 document(s) failed to restore.
[root@node11 ~]# mongo -utom -p123456 192.168.0.52:27017/admin
MongoDB shell version v4.4.1
connecting to: mongodb://192.168.0.52:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("f5e73939-bb87-4d45-bf80-9ff1e7f6f15d") }
MongoDB server version: 4.4.1
---
The server generated these startup warnings when booting:
2020-11-15T20:42:23.774+08:00: ***** SERVER RESTARTED *****
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
---
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
testdb 0.000GB
> use testdb
switched to db testdb
> show tables
test
> db.test.count()
1000
> db.test.findOne()
{
"_id" : ObjectId("5fb130da012870b3c8e3c4ad"),
"id" : 1,
"name" : "test1",
"age" : 1,
"classes" : 1
}
>
恢復單個集合
刪除testdb下的test集合
> db testdb > show collections test > db.test.drop() true > show collections >
使用mongorestore恢復testdb下的test集合
[root@node11 ~]# mongorestore -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb -c test --drop ./node12_testdb_test-collection/testdb/test.bson
2020-11-15T22:36:15.615+0800 checking for collection data in node12_testdb_test-collection/testdb/test.bson
2020-11-15T22:36:15.616+0800 reading metadata for testdb.test from node12_testdb_test-collection/testdb/test.metadata.json
2020-11-15T22:36:15.625+0800 restoring testdb.test from node12_testdb_test-collection/testdb/test.bson
2020-11-15T22:36:15.669+0800 no indexes to restore
2020-11-15T22:36:15.669+0800 finished restoring testdb.test (1000 documents, 0 failures)
2020-11-15T22:36:15.669+0800 1000 document(s) restored successfully. 0 document(s) failed to restore.
[root@node11 ~]# mongo -utom -p123456 192.168.0.52:27017/admin MongoDB shell version v4.4.1
connecting to: mongodb://192.168.0.52:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("27d15d9e-3fdf-4efc-b871-1ec6716e51e3") }
MongoDB server version: 4.4.1
---
The server generated these startup warnings when booting:
2020-11-15T20:42:23.774+08:00: ***** SERVER RESTARTED *****
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
---
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
testdb 0.000GB
> use testdb
switched to db testdb
> show collections
test
> db.test.count()
1000
> db.test.findOne()
{
"_id" : ObjectId("5fb130da012870b3c8e3c4ad"),
"id" : 1,
"name" : "test1",
"age" : 1,
"classes" : 1
}
>
使用壓縮文件恢復數(shù)據(jù)庫
刪除testdb數(shù)據(jù)庫
> db
testdb
> db.dropDatabase()
{ "dropped" : "testdb", "ok" : 1 }
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
>
使用mongorestore工具加載壓縮文件恢復數(shù)據(jù)庫
[root@node11 ~]# mongorestore -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb --gzip --drop ./node12_mongodb_testdb-gzip/testdb/
2020-11-15T22:39:55.313+0800 The --db and --collection flags are deprecated for this use-case; please use --nsInclude instead, i.e. with --nsInclude=${DATABASE}.${COLLECTION}
2020-11-15T22:39:55.313+0800 building a list of collections to restore from node12_mongodb_testdb-gzip/testdb dir
2020-11-15T22:39:55.314+0800 reading metadata for testdb.test from node12_mongodb_testdb-gzip/testdb/test.metadata.json.gz
2020-11-15T22:39:55.321+0800 restoring testdb.test from node12_mongodb_testdb-gzip/testdb/test.bson.gz
2020-11-15T22:39:55.332+0800 no indexes to restore
2020-11-15T22:39:55.332+0800 finished restoring testdb.test (1000 documents, 0 failures)
2020-11-15T22:39:55.332+0800 1000 document(s) restored successfully. 0 document(s) failed to restore.
[root@node11 ~]# mongo -utom -p123456 192.168.0.52:27017/admin MongoDB shell version v4.4.1
connecting to: mongodb://192.168.0.52:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("73d98c33-f8f7-40e3-89bd-fda8c702e407") }
MongoDB server version: 4.4.1
---
The server generated these startup warnings when booting:
2020-11-15T20:42:23.774+08:00: ***** SERVER RESTARTED *****
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
---
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
testdb 0.000GB
> use testdb
switched to db testdb
> show collections
test
> db.test.count()
1000
> db.test.findOne()
{
"_id" : ObjectId("5fb130da012870b3c8e3c4ad"),
"id" : 1,
"name" : "test1",
"age" : 1,
"classes" : 1
}
>
提示：使用mongorestore恢復單個庫使用-d選線指定要恢復的數(shù)據(jù)庫，恢復單個集合使用-c指定集合名稱即可，以及使用壓縮文件恢復加上對應的--gzip選項即可，總之，備份時用的選項在恢復時也應當使用對應的選項，這個mongodump備份使用的選項沒有特別的不同；
使用mongoexport備份數(shù)據(jù)
新建peoples數(shù)據(jù)庫，并向peoples_info集合中插入數(shù)據(jù)
> use peoples
switched to db peoples
> for(i=1;i<=10000;i++) db.peoples_info.insert({id:i,name:"peoples"+i,age:(i%120),classes:(i%25)})
WriteResult({ "nInserted" : 1 })
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
peoples 0.000GB
testdb 0.000GB
> db.peoples_info.count()
10000
> db.peoples_info.findOne()
{
"_id" : ObjectId("5fb13f35012870b3c8e3c895"),
"id" : 1,
"name" : "peoples1",
"age" : 1,
"classes" : 1
}
>
使用mongoexport工具peoples庫下的peoples_info集合
[root@node11 ~]# mongoexport -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d peoples -c peoples_info --type json -o ./peoples-peopels_info.json
2020-11-15T22:54:18.287+0800 connected to: mongodb://192.168.0.52:27017/
2020-11-15T22:54:18.370+0800 exported 10000 records
[root@node11 ~]# ll
total 1004
-rw-r--r-- 1 root root 1024609 Nov 15 22:54 peoples-peopels_info.json
[root@node11 ~]# head -n 1 peoples-peopels_info.json
{"_id":{"$oid":"5fb13f35012870b3c8e3c895"},"id":1.0,"name":"peoples1","age":1.0,"classes":1.0}
[root@node11 ~]#
提示：使用--type可以指定導出數(shù)據(jù)文件的格式，默認是json格式，當然也可以指定csv格式；這里還需要注意mongoexport這個工具導出數(shù)據(jù)必須要指定數(shù)據(jù)庫和對應集合，它不能直接對整個數(shù)據(jù)庫下的所有集合做導出；只能單個單個的導；
導出csv格式的數(shù)據(jù)文件
[root@node11 ~]# mongoexport -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d peoples -c peoples_info --type csv -o ./peoples-peopels_info.csv 2020-11-15T22:58:30.495+0800 connected to: mongodb://192.168.0.52:27017/ 2020-11-15T22:58:30.498+0800 Failed: CSV mode requires a field list [root@node11 ~]# mongoexport -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d peoples -c peoples_info --type csv -f id,name,age -o ./peoples-peopels_info.csv 2020-11-15T22:59:26.090+0800 connected to: mongodb://192.168.0.52:27017/ 2020-11-15T22:59:26.143+0800 exported 10000 records [root@node11 ~]# head -n 1 ./peoples-peopels_info.csv id,name,age [root@node11 ~]# head ./peoples-peopels_info.csv id,name,age 1,peoples1,1 2,peoples2,2 3,peoples3,3 4,peoples4,4 5,peoples5,5 6,peoples6,6 7,peoples7,7 8,peoples8,8 9,peoples9,9 [root@node11 ~]#
提示：導出指定格式為csv時，必須用-f選項指定導出的字段名稱，分別用逗號隔開；
將數(shù)據(jù)導入到node11的mongodb上
導入json格式數(shù)據(jù)
[root@node11 ~]# systemctl start mongod.service [root@node11 ~]# ss -tnl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 *:22 *:* LISTEN 0 100 127.0.0.1:25 *:* LISTEN 0 128 127.0.0.1:27017 *:* LISTEN 0 128 :::22 :::* LISTEN 0 100 ::1:25 :::* [root@node11 ~]# ll total 1200 -rw-r--r-- 1 root root 198621 Nov 15 22:59 peoples-peopels_info.csv -rw-r--r-- 1 root root 1024609 Nov 15 22:54 peoples-peopels_info.json [root@node11 ~]# mongoimport -d testdb -c peoples_info --drop peoples-peopels_info.json 2020-11-15T23:05:03.004+0800 connected to: mongodb://localhost/ 2020-11-15T23:05:03.005+0800 dropping: testdb.peoples_info 2020-11-15T23:05:03.186+0800 10000 document(s) imported successfully. 0 document(s) failed to import. [root@node11 ~]#
提示：導入數(shù)據(jù)時可以任意指定數(shù)據(jù)庫以及集合名稱；
驗證：查看node11上的testdb庫下是否有peoples_info集合？集合中是否有數(shù)據(jù)呢？
[root@node11 ~]# mongo
MongoDB shell version v4.4.1
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("4e3a00b0-8367-4b3a-9a77-e61d03bb1b3d") }
MongoDB server version: 4.4.1
---
The server generated these startup warnings when booting:
2020-11-15T23:03:39.669+08:00: ***** SERVER RESTARTED *****
2020-11-15T23:03:40.681+08:00: Access control is not enabled for the database. Read and write access to data and configuration is unrestricted
2020-11-15T23:03:40.681+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
2020-11-15T23:03:40.681+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
---
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
testdb 0.000GB
> use testdb
switched to db testdb
> show collections
peoples_info
> db.peoples_info.count()
10000
> db.peoples_info.findOne()
{
"_id" : ObjectId("5fb13f35012870b3c8e3c895"),
"id" : 1,
"name" : "peoples1",
"age" : 1,
"classes" : 1
}
>
導入csv格式數(shù)據(jù)到node12上的testdb庫下的test1集合中去
[root@node11 ~]# mongoimport -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin -d testdb -c test1 --type csv --headerline --file ./peoples-peopels_info.csv 2020-11-15T23:11:42.595+0800 connected to: mongodb://192.168.0.52:27017/ 2020-11-15T23:11:42.692+0800 10000 document(s) imported successfully. 0 document(s) failed to import. [root@node11 ~]#
提示：導入csv格式的數(shù)據(jù)需要明確指定類型為csv,然后使用--headerline指定不導入第一行列名，--file使用用于指定csv格式文件的名稱；
驗證：登錄node12的mongodb，查看testdb庫下是否有test1集合？對應集合是否有數(shù)據(jù)呢？
[root@node11 ~]# mongo -utom -p123456 192.168.0.52:27017/admin
MongoDB shell version v4.4.1
connecting to: mongodb://192.168.0.52:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("72a07318-ac04-46f9-a310-13b1241d2f77") }
MongoDB server version: 4.4.1
---
The server generated these startup warnings when booting:
2020-11-15T20:42:23.774+08:00: ***** SERVER RESTARTED *****
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
2020-11-15T20:42:29.198+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
---
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
peoples 0.000GB
testdb 0.000GB
> use testdb
switched to db testdb
> show collections
test
test1
> db.test1.count()
10000
> db.test1.findOne()
{
"_id" : ObjectId("5fb1452ef09b563b65405f7c"),
"id" : 1,
"name" : "peoples1",
"age" : 1
}
>
提示：可以看到testdb庫下的test1結(jié)合就沒有classes字段信息了，這是因為我們導出數(shù)據(jù)時沒有指定要導出classes字段，所以導入的數(shù)據(jù)當然也是沒有classes字段信息；以上就是mongodump/mongorestore和mongoexport/mongoimport工具的使用和測試；
全量備份加oplog實現(xiàn)恢復mongodb數(shù)據(jù)庫到指定時間點的數(shù)據(jù)
在mongodump備份數(shù)據(jù)時，我們可以使用--oplog選項來記錄開始dump數(shù)據(jù)到dump數(shù)據(jù)結(jié)束后的中間一段時間mongodb數(shù)據(jù)發(fā)生變化的日志；我們知道oplog就是用來記錄mongodb中的集合寫操作的日志，類似mysql中的binlog;我們可以使用oplog將備份期間發(fā)生變化的數(shù)據(jù)一起恢復，這樣恢復出來的數(shù)據(jù)才是我們真正備份時的所有數(shù)據(jù)；
模擬備份時，一邊插入數(shù)據(jù)，一邊備份數(shù)據(jù)
test_replset:PRIMARY> use testdb
switched to db testdb
test_replset:PRIMARY> for(i=1;i<=1000000;i++) db.test3.insert({id:i,name:"test3-oplog"+i,commit:"test3"+i})
在另外一邊同時對數(shù)據(jù)做備份
[root@node11 ~]# rm -rf * [root@node11 ~]# ll total 0 [root@node11 ~]# mongodump -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin --oplog -o ./alldatabase 2020-11-15T23:51:40.606+0800 writing admin.system.users to alldatabase/admin/system.users.bson 2020-11-15T23:51:40.606+0800 done dumping admin.system.users (4 documents) 2020-11-15T23:51:40.607+0800 writing admin.system.version to alldatabase/admin/system.version.bson 2020-11-15T23:51:40.608+0800 done dumping admin.system.version (2 documents) 2020-11-15T23:51:40.609+0800 writing testdb.test1 to alldatabase/testdb/test1.bson 2020-11-15T23:51:40.611+0800 writing testdb.test3 to alldatabase/testdb/test3.bson 2020-11-15T23:51:40.612+0800 writing testdb.test to alldatabase/testdb/test.bson 2020-11-15T23:51:40.612+0800 writing peoples.peoples_info to alldatabase/peoples/peoples_info.bson 2020-11-15T23:51:40.696+0800 done dumping peoples.peoples_info (10000 documents) 2020-11-15T23:51:40.761+0800 done dumping testdb.test3 (54167 documents) 2020-11-15T23:51:40.803+0800 done dumping testdb.test (31571 documents) 2020-11-15T23:51:40.966+0800 done dumping testdb.test1 (79830 documents) 2020-11-15T23:51:40.972+0800 writing captured oplog to 2020-11-15T23:51:40.980+0800 dumped 916 oplog entries [root@node11 ~]# ll total 0 drwxr-xr-x 5 root root 66 Nov 15 23:51 alldatabase [root@node11 ~]# tree alldatabase/ alldatabase/ ├── admin │ ├── system.users.bson │ ├── system.users.metadata.json │ ├── system.version.bson │ └── system.version.metadata.json ├── oplog.bson ├── peoples │ ├── peoples_info.bson │ └── peoples_info.metadata.json └── testdb ├── test1.bson ├── test1.metadata.json ├── test3.bson ├── test3.metadata.json ├── test.bson └── test.metadata.json 3 directories, 13 files [root@node11 ~]#
提示：可以看到現(xiàn)在備份就多了一個oplog.bson；
查看oplog.bson中第一行記錄的數(shù)據(jù)和第二行記錄的數(shù)據(jù)
[root@node11 ~]# ls
alldatabase
[root@node11 ~]# cd alldatabase/
[root@node11 alldatabase]# ls
admin oplog.bson peoples testdb
[root@node11 alldatabase]# bsondump oplog.bson > /tmp/oplog.bson.tmp
2020-11-15T23:55:04.801+0800 916 objects found
[root@node11 alldatabase]# head -n 1 /tmp/oplog.bson.tmp
{"op":"i","ns":"testdb.test3","ui":{"$binary":{"base64":"7PmE47CASOiQZt5sMGDZKw==","subType":"04"}},"o":{"_id":{"$oid":"5fb14e8c01fff06b2b50a2ac"},"id":{"$numberDouble":"54101.0"},"name":"test3-oplog54101","commit":"test354101"},"ts":{"$timestamp":{"t":1605455500,"i":1880}},"t":{"$numberLong":"1"},"wall":{"$date":{"$numberLong":"1605455500608"}},"v":{"$numberLong":"2"}}
[root@node11 alldatabase]# tail -n 1 /tmp/oplog.bson.tmp
{"op":"i","ns":"testdb.test3","ui":{"$binary":{"base64":"7PmE47CASOiQZt5sMGDZKw==","subType":"04"}},"o":{"_id":{"$oid":"5fb14e8c01fff06b2b50a63f"},"id":{"$numberDouble":"55016.0"},"name":"test3-oplog55016","commit":"test355016"},"ts":{"$timestamp":{"t":1605455500,"i":2795}},"t":{"$numberLong":"1"},"wall":{"$date":{"$numberLong":"1605455500961"}},"v":{"$numberLong":"2"}}
[root@node11 alldatabase]#
提示：可以看到oplog中記錄了id為54101-55016數(shù)據(jù)，這也就說明了我們開始dump數(shù)據(jù)時，到dump結(jié)束后，數(shù)據(jù)一致在發(fā)生變化，所以我們dump下來的數(shù)據(jù)是一個中間狀態(tài)的數(shù)據(jù)；這里需要說明一點使用mongodump --oplog選項時，不能指定庫，因為oplog是對所有庫，而不針對某個庫記錄，所以--oplog只有在備份所有數(shù)據(jù)庫生效；
刪除testdb數(shù)據(jù)庫，然后基于我們剛才dump的數(shù)據(jù)做數(shù)據(jù)恢復
test_replset:PRIMARY> show dbs
admin 0.000GB
config 0.000GB
local 0.014GB
peoples 0.000GB
testdb 0.019GB
test_replset:PRIMARY> use testdb
switched to db testdb
test_replset:PRIMARY> db.dropDatabase()
{
"dropped" : "testdb",
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1605456134, 4),
"signature" : {
"hash" : BinData(0,"cRAdXcUj5c48Q77rCJ1DeeF10u8="),
"keyId" : NumberLong("6895378399531892740")
}
},
"operationTime" : Timestamp(1605456134, 4)
}
test_replset:PRIMARY> show dbs
admin 0.000GB
config 0.000GB
local 0.014GB
peoples 0.000GB
test_replset:PRIMARY>
使用mongorestore恢復數(shù)據(jù)
[root@node11 ~]# ls alldatabase [root@node11 ~]# mongorestore -utom -p123456 -h 192.168.0.52:27017 --authenticationDatabase admin --oplogReplay --drop ./alldatabase/ 2020-11-16T00:06:32.049+0800 preparing collections to restore from 2020-11-16T00:06:32.053+0800 reading metadata for testdb.test1 from alldatabase/testdb/test1.metadata.json 2020-11-16T00:06:32.060+0800 reading metadata for testdb.test3 from alldatabase/testdb/test3.metadata.json 2020-11-16T00:06:32.064+0800 reading metadata for testdb.test from alldatabase/testdb/test.metadata.json 2020-11-16T00:06:32.064+0800 restoring testdb.test1 from alldatabase/testdb/test1.bson 2020-11-16T00:06:32.074+0800 restoring testdb.test3 from alldatabase/testdb/test3.bson 2020-11-16T00:06:32.093+0800 restoring testdb.test from alldatabase/testdb/test.bson 2020-11-16T00:06:32.098+0800 reading metadata for peoples.peoples_info from alldatabase/peoples/peoples_info.metadata.json 2020-11-16T00:06:32.110+0800 restoring peoples.peoples_info from alldatabase/peoples/peoples_info.bson 2020-11-16T00:06:32.333+0800 no indexes to restore 2020-11-16T00:06:32.333+0800 finished restoring peoples.peoples_info (10000 documents, 0 failures) 2020-11-16T00:06:32.766+0800 no indexes to restore 2020-11-16T00:06:32.766+0800 finished restoring testdb.test (31571 documents, 0 failures) 2020-11-16T00:06:33.023+0800 no indexes to restore 2020-11-16T00:06:33.023+0800 finished restoring testdb.test3 (54167 documents, 0 failures) 2020-11-16T00:06:33.370+0800 no indexes to restore 2020-11-16T00:06:33.370+0800 finished restoring testdb.test1 (79830 documents, 0 failures) 2020-11-16T00:06:33.370+0800 restoring users from alldatabase/admin/system.users.bson 2020-11-16T00:06:33.416+0800 replaying oplog 2020-11-16T00:06:33.850+0800 applied 916 oplog entries 2020-11-16T00:06:33.850+0800 175568 document(s) restored successfully. 0 document(s) failed to restore. [root@node11 ~]#
提示：恢復是需要使用--oplogReplay選項來指定重放oplog.bson中的內(nèi)容；從上面恢復日志可以看到從oplog中恢復了916條數(shù)據(jù)；也就是說從dump數(shù)據(jù)開始的那一刻開始到dump結(jié)束期間有916條數(shù)據(jù)發(fā)生變化；
驗證：連接數(shù)據(jù)庫，看看對應的testdb庫下的test3集合恢復了多少條數(shù)據(jù)？
test_replset:PRIMARY> use testdb switched to db testdb test_replset:PRIMARY> show tables test test1 test3 test_replset:PRIMARY> db.test3.count() 55016 test_replset:PRIMARY>
提示：可以看到test3集合恢復了55016條數(shù)據(jù)；剛好可以和oplog.bson中的最后一條數(shù)據(jù)的id對應起來；
備份oplog.rs實現(xiàn)指定恢復到某個時間節(jié)點
為了演示容易看出效果，我這里從新將數(shù)據(jù)庫清空，關(guān)閉了認證功能
插入數(shù)據(jù)
test_replset:PRIMARY> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
test_replset:PRIMARY> use testdb
switched to db testdb
test_replset:PRIMARY> for(i=1;i<=100000;i++) db.test.insert({id:(i+10000),name:"test-oplog"+i,commit:"test"+i})
同時備份數(shù)據(jù)，這次不加--oplog選項
[root@node11 ~]# ll total 0 [root@node11 ~]# mongodump -h node12:27017 -o ./alldatabase 2020-11-16T09:38:00.921+0800 writing admin.system.version to alldatabase/admin/system.version.bson 2020-11-16T09:38:00.923+0800 done dumping admin.system.version (1 document) 2020-11-16T09:38:00.924+0800 writing testdb.test to alldatabase/testdb/test.bson 2020-11-16T09:38:00.960+0800 done dumping testdb.test (16377 documents) [root@node11 ~]# ll total 0 drwxr-xr-x 4 root root 33 Nov 16 09:38 alldatabase [root@node11 ~]# tree ./alldatabase ./alldatabase ├── admin │ ├── system.version.bson │ └── system.version.metadata.json └── testdb ├── test.bson └── test.metadata.json 2 directories, 4 files [root@node11 ~]#
提示：我們在一邊插入數(shù)據(jù)，一邊備份數(shù)據(jù)，從上面的被日志可以看到，我們備份testdb庫下的test集合16377條數(shù)據(jù)，很顯然這不是testdb.test集合的所有數(shù)據(jù)；我們備份的只是部分數(shù)據(jù)；正常情況等數(shù)據(jù)插入完成以后，testdb.test集合應該有100000條數(shù)據(jù)；
驗證：查看testdb.test集合是否有100000條數(shù)據(jù)？
test_replset:PRIMARY> db testdb test_replset:PRIMARY> show collections test test_replset:PRIMARY> db.test.count() 100000 test_replset:PRIMARY>
模擬誤操作刪除testdb.test集合所有數(shù)據(jù)
test_replset:PRIMARY> db
testdb
test_replset:PRIMARY> show collections
test
test_replset:PRIMARY> db.test.remove({})
WriteResult({ "nRemoved" : 100000 })
test_replset:PRIMARY>
提示：現(xiàn)在我們不小心把testdb.test集合給刪除了，現(xiàn)在如果用之前的備份肯定只能恢復部分數(shù)據(jù)，怎么辦呢？我們這個時候可以導出oplog.rs集合，這個集合就是oplog存放數(shù)據(jù)的集合，它位于local庫下；
備份local庫中的oplog.rs集合
[root@node11 ~]# ll total 0 drwxr-xr-x 4 root root 33 Nov 16 09:38 alldatabase [root@node11 ~]# mongodump -h node12:27017 -d local -c oplog.rs -o ./oplog-rs 2020-11-16T09:43:38.594+0800 writing local.oplog.rs to oplog-rs/local/oplog.rs.bson 2020-11-16T09:43:38.932+0800 done dumping local.oplog.rs (200039 documents) [root@node11 ~]# ll total 0 drwxr-xr-x 4 root root 33 Nov 16 09:38 alldatabase drwxr-xr-x 3 root root 19 Nov 16 09:43 oplog-rs [root@node11 ~]# tree ./oplog-rs ./oplog-rs └── local ├── oplog.rs.bson └── oplog.rs.metadata.json 1 directory, 2 files [root@node11 ~]#
提示：oplog存放在local庫下的oplog.rs集合中，以上操作就是備份所有的oplog；現(xiàn)在我們準備好一個oplog,但是現(xiàn)在還不能直接恢復，如果直接恢復，我們的誤操作也會跟著一起重放沒有任何意義，現(xiàn)在我們需要找到誤操作的時間點，然后在恢復；
在oplog中查找誤刪除的時間
[root@node11 ~]# bsondump oplog-rs/local/oplog.rs.bson |egrep "\"op\":\"d\""|head -n 3
{"op":"d","ns":"testdb.test","ui":{"$binary":{"base64":"C3FH7g1eSWWwHd2AZEJhiw==","subType":"04"}},"o":{"_id":{"$oid":"5fb1d7eb25343e833cbaa146"}},"ts":{"$timestamp":{"t":1605490915,"i":1}},"t":{"$numberLong":"1"},"wall":{"$date":{"$numberLong":"1605490915399"}},"v":{"$numberLong":"2"}}
{"op":"d","ns":"testdb.test","ui":{"$binary":{"base64":"C3FH7g1eSWWwHd2AZEJhiw==","subType":"04"}},"o":{"_id":{"$oid":"5fb1d7eb25343e833cbaa147"}},"ts":{"$timestamp":{"t":1605490915,"i":2}},"t":{"$numberLong":"1"},"wall":{"$date":{"$numberLong":"1605490915400"}},"v":{"$numberLong":"2"}}
{"op":"d","ns":"testdb.test","ui":{"$binary":{"base64":"C3FH7g1eSWWwHd2AZEJhiw==","subType":"04"}},"o":{"_id":{"$oid":"5fb1d7eb25343e833cbaa148"}},"ts":{"$timestamp":{"t":1605490915,"i":3}},"t":{"$numberLong":"1"},"wall":{"$date":{"$numberLong":"1605490915400"}},"v":{"$numberLong":"2"}}
2020-11-16T09:46:20.363+0800 100074 objects found
2020-11-16T09:46:20.363+0800 write /dev/stdout: broken pipe
[root@node11 ~]#
提示：我們要恢復到第一次刪除前的數(shù)據(jù)，我們就選擇第一條日志中的$timestamp字段中的{"t":1605490915,"i":1}；這個就是我們第一次刪除的時間信息；
復制oplog.rs.bson到備份的數(shù)據(jù)目錄為oplog.bson，模擬出使用--oplog選項備份的備份環(huán)境
[root@node11 ~]# cp ./oplog-rs/local/oplog.rs.bson ./alldatabase/oplog.bson [root@node11 ~]#
在使用mongorestore進行恢復數(shù)據(jù)，指定恢復到第一次刪除數(shù)據(jù)前的時間點所有數(shù)據(jù)
[root@node11 ~]# mongorestore -h node12:27017 --oplogReplay --oplogLimit "1605490915:1" --drop ./alldatabase/ 2020-11-16T09:51:19.658+0800 preparing collections to restore from 2020-11-16T09:51:19.668+0800 reading metadata for testdb.test from alldatabase/testdb/test.metadata.json 2020-11-16T09:51:19.693+0800 restoring testdb.test from alldatabase/testdb/test.bson 2020-11-16T09:51:19.983+0800 no indexes to restore 2020-11-16T09:51:19.983+0800 finished restoring testdb.test (16377 documents, 0 failures) 2020-11-16T09:51:19.983+0800 replaying oplog 2020-11-16T09:51:22.657+0800 oplog 537KB 2020-11-16T09:51:25.657+0800 oplog 1.12MB 2020-11-16T09:51:28.657+0800 oplog 1.72MB 2020-11-16T09:51:31.657+0800 oplog 2.32MB 2020-11-16T09:51:34.657+0800 oplog 2.92MB 2020-11-16T09:51:37.657+0800 oplog 3.51MB 2020-11-16T09:51:40.657+0800 oplog 4.11MB 2020-11-16T09:51:43.657+0800 oplog 4.71MB 2020-11-16T09:51:46.657+0800 oplog 5.30MB 2020-11-16T09:51:49.657+0800 oplog 5.90MB 2020-11-16T09:51:52.657+0800 oplog 6.46MB 2020-11-16T09:51:55.657+0800 oplog 7.04MB 2020-11-16T09:51:58.657+0800 oplog 7.61MB 2020-11-16T09:52:01.657+0800 oplog 8.20MB 2020-11-16T09:52:04.657+0800 oplog 8.77MB 2020-11-16T09:52:07.657+0800 oplog 9.36MB 2020-11-16T09:52:10.657+0800 oplog 9.96MB 2020-11-16T09:52:13.657+0800 oplog 10.6MB 2020-11-16T09:52:16.656+0800 oplog 11.2MB 2020-11-16T09:52:19.657+0800 oplog 11.8MB 2020-11-16T09:52:22.657+0800 oplog 12.4MB 2020-11-16T09:52:25.657+0800 oplog 13.0MB 2020-11-16T09:52:28.657+0800 oplog 13.6MB 2020-11-16T09:52:31.657+0800 oplog 14.2MB 2020-11-16T09:52:34.657+0800 oplog 14.8MB 2020-11-16T09:52:37.657+0800 oplog 15.4MB 2020-11-16T09:52:40.657+0800 oplog 16.0MB 2020-11-16T09:52:43.657+0800 oplog 16.6MB 2020-11-16T09:52:46.657+0800 oplog 17.2MB 2020-11-16T09:52:49.657+0800 oplog 17.8MB 2020-11-16T09:52:52.433+0800 skipping applying the config.system.sessions namespace in applyOps 2020-11-16T09:52:52.433+0800 applied 100008 oplog entries 2020-11-16T09:52:52.433+0800 oplog 18.4MB 2020-11-16T09:52:52.433+0800 16377 document(s) restored successfully. 0 document(s) failed to restore. [root@node11 ~]#
提示：從上面的恢復日志可以看到oplog恢復了100008條，備份的16377條數(shù)據(jù)也成功恢復；
驗證：查看testdb.test集合是否恢復？數(shù)據(jù)恢復了多少條呢？
test_replset:PRIMARY> show dbs admin 0.000GB config 0.000GB local 0.010GB testdb 0.004GB test_replset:PRIMARY> use testdb switched to db testdb test_replset:PRIMARY> show tables test test_replset:PRIMARY> db.test.count() 100000 test_replset:PRIMARY>
提示：可以看到testdb.test集合恢復了100000條數(shù)據(jù)；
以上就是mongodb的備份與恢復相關(guān)話題的實踐；
到此這篇關(guān)于分布式文檔存儲數(shù)據(jù)庫之MongoDB備份與恢復的文章就介紹到這了,更多相關(guān)MongoDB備份與恢復內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
您可能感興趣的文章:
- MongoDB的備份與恢復
- mongoDB4.2.8備份恢復與導出導入(推薦)
- 使用centos系統(tǒng)中的crontab命令對mongodb定時備份恢復
- Mongodb實現(xiàn)定時備份與恢復的方法教程
- MongoDB 導出導入備份恢復數(shù)據(jù)詳解及實例
- MongoDB使用自帶的命令行工具進行備份和恢復的教程
- Windows或Linux系統(tǒng)中備份和恢復MongoDB數(shù)據(jù)的教程
- Mongodb數(shù)據(jù)庫的備份與恢復操作實例
- MongoDB整庫備份與還原以及單個collection備份、恢復方法
- MongoDB的備份(mongodump)與恢復(mongorestore)
相關(guān)文章
老生常談MongoDB數(shù)據(jù)庫基礎(chǔ)操作
下面小編就為大家?guī)硪黄仙Ｕ凪ongoDB數(shù)據(jù)庫基礎(chǔ)操作。小編覺得挺不錯的，現(xiàn)在就分享給大家，也給大家做個參考。一起跟隨小編過來看看吧2017-07-07
MongoDB中強大的統(tǒng)計框架Aggregation使用實例解析
這篇文章主要介紹了MongoDB中強大的統(tǒng)計框架Aggregation使用實例解析,文中舉了Python和Java使用Aggregation的數(shù)據(jù)統(tǒng)計例子進行講解,需要的朋友可以參考下2016-01-01
MongoDB模糊查詢操作案例詳解(類關(guān)系型數(shù)據(jù)庫的 like 和 not like)
這篇文章主要介紹了MongoDB的模糊查詢操作(類關(guān)系型數(shù)據(jù)庫的 like 和 not like) ,本文通過代碼案例分析給大家介紹的非常詳細，具有一定的參考借鑒價值，，需要的朋友可以參考下2019-07-07
磁盤IO是不可避免的，除去減少或延緩磁盤操作，也需要盡量的增強磁盤IO性能和吞吐量。下面這篇文章主要給大家介紹了關(guān)于MongoDB磁盤IO問題的3種解決方法，需要的朋友可以參考借鑒，需要的朋友們下面來一起看看吧2018-07-07
MongoDB 是一個基于分布式文件存儲的數(shù)據(jù)庫。由 C++ 語言編寫。接下來通過本文給大家介紹Mongodb索引的優(yōu)化，本文介紹的非常詳細，具有參考借鑒價值，感興趣的朋友一起學習吧2016-02-02
這篇文章主要介紹了mongodb啟動方法小結(jié),啟動Mongodb服務有兩種方式，前臺啟動或者Daemon方式啟動，每種方式給大家介紹的非常詳細，對大家的學習或工作具有一定的參考借鑒價值，需要的朋友可以參考下2022-01-01
MapReduce應該算是MongoDB操作中比較復雜的了，下面這篇文章主要給大家介紹了關(guān)于MongoDB中MapReduce使用的相關(guān)資料，文中通過示例代碼介紹的非常詳細，需要的朋友可以參考借鑒，下面隨著小編來一起看看吧。2017-12-12
MongoDB 3.6版本中bind_ip設(shè)置詳解
這篇文章主要給大家介紹了關(guān)于MongoDB 3.6版本中bind_ip設(shè)置的相關(guān)資料，文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值，需要的朋友們下面隨著小編來一起學習學習吧2018-12-12
這篇文章主要介紹了C#實現(xiàn)窗體中的各個控件同比自動放縮大小,實現(xiàn)方式主要是利用panel控件為主題,對于每個控件的大小位置和字體這幾個屬性進行記錄,然后根據(jù)窗體改變的大小同時放縮,需要的朋友可以參考下2014-10-10
MongoDB多數(shù)據(jù)源配置與切換的方法示例
這篇文章主要介紹了MongoDB多數(shù)據(jù)源配置與切換的方法示例,如何在SpringBoot應用中配置并使用兩個MongoDB數(shù)據(jù)源,包括YAML配置文件的編寫,避免默認MongoTemplate注入,文中通過代碼示例介紹的非常詳細,需要的朋友可以參考下2024-07-07