MongoDB的备份与恢复(2)-木庄网络博客

数据备份举例

备份所有数据库
mongodump --port=27017 -h 127.0.0.1 -o /data/mongodb_backup -u root -p 123456 
2020-11-23T23:40:41.599+0800 writing admin.system.users to 
2020-11-23T23:40:41.626+0800 done dumping admin.system.users (3 documents)
2020-11-23T23:40:41.626+0800 writing admin.system.roles to 
2020-11-23T23:40:41.651+0800 done dumping admin.system.roles (1 document)
2020-11-23T23:40:41.651+0800 writing admin.system.version to 
2020-11-23T23:40:41.680+0800 done dumping admin.system.version (2 documents)
2020-11-23T23:40:41.680+0800 writing test.yeyz to 
2020-11-23T23:40:41.680+0800 writing yeyz.test to 
2020-11-23T23:40:41.726+0800 done dumping yeyz.test (2 documents)
2020-11-23T23:40:41.727+0800 done dumping test.yeyz (3 documents)

备份yeyz这一个数据库
[root@VM-0-14-centos ~]# mongodump -d yeyz --port=27017 -h 127.0.0.1 -o /data/mongodb_backup -u root -p 123456 --authenticationDatabase admin   
2020-11-23T23:41:58.991+0800 writing yeyz.test to 
2020-11-23T23:41:59.050+0800 done dumping yeyz.test (2 documents)

备份yeyz数据库中的test集合中的name=ccc的记录
[root@VM-0-14-centos ~]# mongodump -d yeyz -c test -q '{name:{$eq:"ccc"}}' --port=27017 -h 127.0.0.1 -o /data/mongodb_backup -u root -p 123456 --authenticationDatabase admin
2020-11-23T23:43:24.473+0800 writing yeyz.test to 
2020-11-23T23:43:24.501+0800 done dumping yeyz.test (1 document)

数据恢复举例

恢复前
> use yeyz
switched to db yeyz
> show tables;
test
> db.test.find()
{ "_id" : ObjectId("5fa7eae2515b814f18f2d474"), "name" : "ccc" }
{ "_id" : ObjectId("5fa7f00e523d80402cdfa326"), "name" : "bbb" }

恢复后
> show tables;
test
test_recover
> db.test_recover.find()
{ "_id" : ObjectId("5fa7eae2515b814f18f2d474"), "name" : "ccc" }

我们成功的将上面的yeyz数据库中的test集合中的name=ccc的记录恢复到了test_recover这个集合当中。