检查恢复结果
当我们对数据出现误操作的时候，可以利用oplog恢复数据。
使用前提：
- 1、环境是副本集
- 2、必须有全备
- 2、全备后oplog没有被覆盖
数据全备
mongodump -h 172.16.254.133 –port 27017 -o /mongodb/backup/backup
模拟故障
写入数据
handong1:PRIMARY> for (var i = 1; i <= 100; i++) {
…db.test.insert( { id : i , name: “handong” , name1:”handong”, name2:”handong”, name3:”handong”} )
… }
WriteResult({ “nInserted” : 1 })
handong1:PRIMARY>
handong1:PRIMARY> db.test.count()
100
模拟误操作
handong1:PRIMARY> db.test.remove({})
WriteResult({ “nRemoved” : 100 })
handong1:PRIMARY> db.test.count()
0
所有文档被误删除。
恢复步骤
备份oplog
mongodump -h 172.16.254.133 –port 27017 -d local -c oplog.rs -o /mongodb/backup
2021-04-30T18:32:29.077+0800writing local.oplog.rs to /mongodb/backup/local/oplog.rs.bson
2021-04-30T18:32:32.039+0800local.oplog.rs7108
2021-04-30T18:32:35.038+0800local.oplog.rs17912
2021-04-30T18:32:38.041+0800local.oplog.rs28226
2021-04-30T18:32:41.039+0800local.oplog.rs38642
2021-04-30T18:32:44.042+0800local.oplog.rs50679
2021-04-30T18:32:47.040+0800local.oplog.rs64001
2021-04-30T18:32:50.040+0800local.oplog.rs77265
2021-04-30T18:32:53.038+0800local.oplog.rs89739
2021-04-30T18:32:56.038+0800local.oplog.rs102449
2021-04-30T18:32:57.697+0800local.oplog.rs132459
2021-04-30T18:32:57.697+0800done dumping local.oplog.rs (132459 documents)
解析oplog
bsondump /mongodb/backup/local/oplog.rs.bson> /mongodb/backup/local/local.log
2021-04-30T18:34:27.612+0800132459 objects found
将oplog备份和全备复制到standalone机
scp -r backup/ 172.16.254.130:/mongodb/backup/
scp -r local/ 172.16.254.130:/mongodb/backup/backup
查找误操作时间点
通过查看解析完的日志local.log发现误操作的时间点在1619778429。
进行数据恢复
mongorestore -h 172.16.254.130 –port 27017 –oplogReplay –oplogLimit 1619778429:1 /mongodb/backup/backup
2021-04-30T19:00:11.099+0800preparing collections to restore from
2021-04-30T19:00:11.100+0800don’t know what to do with file “/mongodb/backup/backup/local/111.log”, skipping…
2021-04-30T19:00:11.100+0800don’t know what to do with file “/mongodb/backup/backup/local/local.log”, skipping…
2021-04-30T19:00:11.116+0800reading metadata for db4.rcmd_1_tag_li_liao from /mongodb/backup/backup/db4/rcmd_1_tag_li_liao.metadata.json
2021-04-30T19:00:11.117+0800reading metadata for ycsb.usertable from /mongodb/backup/backup/ycsb/usertable.metadata.json
2021-04-30T19:00:11.119+0800reading metadata for db3.db3 from /mongodb/backup/backup/db3/db3.metadata.json
2021-04-30T19:00:11.119+0800reading metadata for ycsb1.usertable from /mongodb/backup/backup/ycsb1/usertable.metadata.json
2021-04-30T19:00:11.170+0800restoring ycsb.usertable from /mongodb/backup/backup/ycsb/usertable.bson
2021-04-30T19:00:11.187+0800restoring ycsb1.usertable from /mongodb/backup/backup/ycsb1/usertable.bson
2021-04-30T19:00:11.391+0800restoring db4.rcmd_1_tag_li_liao from /mongodb/backup/backup/db4/rcmd_1_tag_li_liao.bson
2021-04-30T19:00:11.580+0800restoring db3.db3 from /mongodb/backup/backup/db3/db3.bson
2021-04-30T19:00:11.661+0800no indexes to restore
2021-04-30T19:00:11.661+0800finished restoring db3.db3 (6 documents, 0 failures)
2021-04-30T19:00:11.662+0800reading metadata for db5.test from /mongodb/backup/backup/db5/test.metadata.json
2021-04-30T19:00:12.545+0800restoring db5.test from /mongodb/backup/backup/db5/test.bson
2021-04-30T19:00:12.548+0800no indexes to restore
2021-04-30T19:00:12.548+0800finished restoring db5.test (0 documents, 0 failures)
2021-04-30T19:00:12.548+0800reading metadata for db4.db4 from /mongodb/backup/backup/db4/db4.metadata.json
2021-04-30T19:00:13.784+0800no indexes to restore
2021-04-30T19:00:13.784+0800finished restoring ycsb1.usertable (30370 documents, 0 failures)
2021-04-30T19:00:13.785+0800reading metadata for db4.test1 from /mongodb/backup/backup/db4/test1.metadata.json
2021-04-30T19:00:14.099+0800[###################…..]ycsb.usertable47.8MB/58.9MB(81.2%)
2021-04-30T19:00:14.099+0800[……………………]db4.rcmd_1_tag_li_liao79.8MB/3.32GB (2.3%)
2021-04-30T19:00:14.099+0800
2021-04-30T19:00:14.843+0800[########################]ycsb.usertable58.9MB/58.9MB(100.0%)
2021-04-30T19:00:14.843+0800no indexes to restore
2021-04-30T19:00:14.843+0800finished restoring ycsb.usertable (43458 documents, 0 failures)
2021-04-30T19:00:15.339+0800restoring db4.db4 from /mongodb/backup/backup/db4/db4.bson
2021-04-30T19:00:17.077+0800restoring db4.test1 from /mongodb/backup/backup/db4/test1.bson
2021-04-30T19:00:17.103+0800[#…………………..]db4.rcmd_1_tag_li_liao167MB/3.32GB(4.9%)
2021-04-30T19:00:17.104+0800[#…………………..] db4.db48.11MB/137MB(5.9%)
2021-04-30T19:00:17.104+0800[……………………] db4.test10B/104MB(0.0%)
2021-04-30T19:00:17.104+0800
2021-04-30T19:00:20.099+0800[#…………………..]db4.rcmd_1_tag_li_liao204MB/3.32GB (6.0%)
2021-04-30T19:00:20.099+0800[####………………..] db4.db424.5MB/137MB(18.0%)
2021-04-30T19:00:20.099+0800[#…………………..] db4.test14.47MB/104MB (4.3%)
2021-04-30T19:00:20.099+0800
2021-04-30T19:00:23.099+0800[#…………………..]db4.rcmd_1_tag_li_liao272MB/3.32GB (8.0%)
2021-04-30T19:00:23.099+0800[######………………] db4.db439.7MB/137MB(29.1%)
2021-04-30T19:00:23.099+0800[####………………..] db4.test120.1MB/104MB(19.3%)
2021-04-30T19:00:23.099+0800
2021-04-30T19:00:26.102+0800[##………………….]db4.rcmd_1_tag_li_liao355MB/3.32GB(10.4%)
2021-04-30T19:00:26.102+0800[##########…………..] db4.db458.0MB/137MB(42.5%)
2021-04-30T19:00:26.102+0800[########…………….] db4.test138.1MB/104MB(36.7%)
2021-04-30T19:00:26.102+0800
2021-04-30T19:00:29.098+0800[##………………….]db4.rcmd_1_tag_li_liao401MB/3.32GB(11.8%)
2021-04-30T19:00:29.098+0800[############…………] db4.db473.1MB/137MB(53.5%)
2021-04-30T19:00:29.098+0800[###########………….] db4.test151.8MB/104MB(49.8%)
2021-04-30T19:00:29.098+0800
2021-04-30T19:00:32.097+0800[###…………………]db4.rcmd_1_tag_li_liao494MB/3.32GB(14.5%)
2021-04-30T19:00:32.097+0800[###############………] db4.db490.8MB/137MB(66.5%)
2021-04-30T19:00:32.097+0800[###############………] db4.test167.3MB/104MB(64.7%)
2021-04-30T19:00:32.097+0800
2021-04-30T19:00:35.100+0800[###…………………]db4.rcmd_1_tag_li_liao556MB/3.32GB(16.3%)
2021-04-30T19:00:35.100+0800[###################…..] db4.db4 110MB/137MB(80.5%)
2021-04-30T19:00:35.100+0800[###################…..] db4.test186.1MB/104MB(82.8%)
2021-04-30T19:00:35.100+0800
2021-04-30T19:00:38.097+0800[####………………..]db4.rcmd_1_tag_li_liao620MB/3.32GB(18.2%)
2021-04-30T19:00:38.097+0800[#####################…] db4.db4 124MB/137MB(91.1%)
2021-04-30T19:00:38.097+0800[#######################.] db4.test1 101MB/104MB(96.7%)
2021-04-30T19:00:38.097+0800
2021-04-30T19:00:39.023+0800[########################]db4.test1104MB/104MB(100.0%)
2021-04-30T19:00:39.023+0800no indexes to restore
2021-04-30T19:00:39.023+0800finished restoring db4.test1 (1000000 documents, 0 failures)
2021-04-30T19:00:40.386+0800[########################]db4.db4137MB/137MB(100.0%)
2021-04-30T19:00:40.386+0800no indexes to restore
2021-04-30T19:00:40.386+0800finished restoring db4.db4 (1313657 documents, 0 failures)
2021-04-30T19:00:41.097+0800[####………………..]db4.rcmd_1_tag_li_liao684MB/3.32GB(20.1%)
2021-04-30T19:00:44.097+0800[#####……………….]db4.rcmd_1_tag_li_liao760MB/3.32GB(22.3%)
2021-04-30T19:00:47.097+0800[#####……………….]db4.rcmd_1_tag_li_liao836MB/3.32GB(24.6%)
2021-04-30T19:00:50.098+0800[######………………]db4.rcmd_1_tag_li_liao906MB/3.32GB(26.6%)
2021-04-30T19:00:53.098+0800[#######……………..]db4.rcmd_1_tag_li_liao994MB/3.32GB(29.2%)
2021-04-30T19:00:56.098+0800[#######……………..]db4.rcmd_1_tag_li_liao1.03GB/3.32GB(31.0%)
2021-04-30T19:00:59.098+0800[########…………….]db4.rcmd_1_tag_li_liao1.11GB/3.32GB(33.3%)
2021-04-30T19:01:02.097+0800[########…………….]db4.rcmd_1_tag_li_liao1.18GB/3.32GB(35.5%)
2021-04-30T19:01:05.101+0800[#########……………]db4.rcmd_1_tag_li_liao1.26GB/3.32GB(38.0%)
2021-04-30T19:01:08.097+0800[#########……………]db4.rcmd_1_tag_li_liao1.32GB/3.32GB(39.7%)
2021-04-30T19:01:11.100+0800[#########……………]db4.rcmd_1_tag_li_liao1.37GB/3.32GB(41.1%)
2021-04-30T19:01:14.098+0800[##########…………..]db4.rcmd_1_tag_li_liao1.43GB/3.32GB(43.2%)
2021-04-30T19:01:17.097+0800[##########…………..]db4.rcmd_1_tag_li_liao1.50GB/3.32GB(45.0%)
2021-04-30T19:01:20.098+0800[###########………….]db4.rcmd_1_tag_li_liao1.54GB/3.32GB(46.3%)
2021-04-30T19:01:23.098+0800[###########………….]db4.rcmd_1_tag_li_liao1.58GB/3.32GB(47.6%)
2021-04-30T19:01:26.098+0800[###########………….]db4.rcmd_1_tag_li_liao1.64GB/3.32GB(49.3%)
2021-04-30T19:01:29.097+0800[############…………]db4.rcmd_1_tag_li_liao1.71GB/3.32GB(51.4%)
2021-04-30T19:01:32.097+0800[############…………]db4.rcmd_1_tag_li_liao1.77GB/3.32GB(53.2%)
2021-04-30T19:01:35.098+0800[#############………..]db4.rcmd_1_tag_li_liao1.85GB/3.32GB(55.7%)
2021-04-30T19:01:38.097+0800[#############………..]db4.rcmd_1_tag_li_liao1.90GB/3.32GB(57.2%)
2021-04-30T19:01:41.097+0800[##############……….]db4.rcmd_1_tag_li_liao1.98GB/3.32GB(59.5%)
2021-04-30T19:01:44.827+0800[##############……….]db4.rcmd_1_tag_li_liao2.00GB/3.32GB(60.3%)
2021-04-30T19:01:47.097+0800[##############……….]db4.rcmd_1_tag_li_liao2.05GB/3.32GB(61.8%)
2021-04-30T19:01:50.098+0800[###############………]db4.rcmd_1_tag_li_liao2.12GB/3.32GB(63.9%)
2021-04-30T19:01:53.097+0800[###############………]db4.rcmd_1_tag_li_liao2.19GB/3.32GB(65.9%)
2021-04-30T19:01:56.097+0800[################……..]db4.rcmd_1_tag_li_liao2.26GB/3.32GB(67.9%)
2021-04-30T19:01:59.099+0800[################……..]db4.rcmd_1_tag_li_liao2.32GB/3.32GB(69.8%)
2021-04-30T19:02:02.098+0800[#################…….]db4.rcmd_1_tag_li_liao2.39GB/3.32GB(72.0%)
2021-04-30T19:02:05.097+0800[#################…….]db4.rcmd_1_tag_li_liao2.47GB/3.32GB(74.4%)
2021-04-30T19:02:08.097+0800[##################……]db4.rcmd_1_tag_li_liao2.52GB/3.32GB(76.0%)
2021-04-30T19:02:11.097+0800[##################……]db4.rcmd_1_tag_li_liao2.59GB/3.32GB(77.8%)
2021-04-30T19:02:14.097+0800[###################…..]db4.rcmd_1_tag_li_liao2.66GB/3.32GB(80.0%)
2021-04-30T19:02:17.097+0800[###################…..]db4.rcmd_1_tag_li_liao2.72GB/3.32GB(81.9%)
2021-04-30T19:02:20.097+0800[####################….]db4.rcmd_1_tag_li_liao2.78GB/3.32GB(83.7%)
2021-04-30T19:02:23.097+0800[####################….]db4.rcmd_1_tag_li_liao2.85GB/3.32GB(85.7%)
2021-04-30T19:02:26.098+0800[#####################…]db4.rcmd_1_tag_li_liao2.94GB/3.32GB(88.4%)
2021-04-30T19:02:29.097+0800[#####################…]db4.rcmd_1_tag_li_liao3.00GB/3.32GB(90.4%)
2021-04-30T19:02:32.097+0800[######################..]db4.rcmd_1_tag_li_liao3.06GB/3.32GB(92.1%)
2021-04-30T19:02:35.099+0800[######################..]db4.rcmd_1_tag_li_liao3.12GB/3.32GB(93.9%)
2021-04-30T19:02:38.097+0800[######################..]db4.rcmd_1_tag_li_liao3.15GB/3.32GB(95.0%)
2021-04-30T19:02:41.098+0800[#######################.]db4.rcmd_1_tag_li_liao3.21GB/3.32GB(96.7%)
2021-04-30T19:02:44.167+0800[#######################.]db4.rcmd_1_tag_li_liao3.26GB/3.32GB(98.0%)
2021-04-30T19:02:47.097+0800[#######################.]db4.rcmd_1_tag_li_liao3.32GB/3.32GB(99.9%)
2021-04-30T19:02:47.392+0800[########################]db4.rcmd_1_tag_li_liao3.32GB/3.32GB(100.0%)
2021-04-30T19:02:47.393+0800no indexes to restore
2021-04-30T19:02:47.393+0800finished restoring db4.rcmd_1_tag_li_liao (379143 documents, 0 failures)
2021-04-30T19:02:47.393+0800restoring users from /mongodb/backup/backup/admin/system.users.bson
2021-04-30T19:02:50.655+0800admin.tempusers2.05KB
2021-04-30T19:02:50.655+0800admin.tempusers2.05KB
2021-04-30T19:02:51.905+0800replaying oplog
2021-04-30T19:02:53.097+0800oplog483KB
2021-04-30T19:02:56.097+0800oplog20.2MB
2021-04-30T19:02:59.100+0800oplog36.9MB
2021-04-30T19:03:02.097+0800oplog50.1MB
2021-04-30T19:03:05.098+0800oplog69.0MB
2021-04-30T19:03:08.097+0800oplog90.6MB
2021-04-30T19:03:11.097+0800oplog124MB
2021-04-30T19:03:14.097+0800oplog159MB
2021-04-30T19:03:17.098+0800oplog185MB
2021-04-30T19:03:20.097+0800oplog219MB
2021-04-30T19:03:23.098+0800oplog256MB
2021-04-30T19:03:26.097+0800oplog290MB
2021-04-30T19:03:29.097+0800oplog323MB
2021-04-30T19:03:32.097+0800oplog357MB
2021-04-30T19:03:35.097+0800oplog391MB
2021-04-30T19:03:38.098+0800oplog427MB
2021-04-30T19:03:41.098+0800oplog464MB
2021-04-30T19:03:44.097+0800oplog501MB
2021-04-30T19:03:47.097+0800oplog544MB
2021-04-30T19:03:50.098+0800oplog580MB
2021-04-30T19:03:53.098+0800oplog619MB
2021-04-30T19:03:56.098+0800oplog650MB
2021-04-30T19:03:59.099+0800oplog687MB
2021-04-30T19:04:02.097+0800oplog722MB
2021-04-30T19:04:05.097+0800oplog758MB
2021-04-30T19:04:08.098+0800oplog795MB
2021-04-30T19:04:11.097+0800oplog826MB
2021-04-30T19:04:14.098+0800oplog858MB
2021-04-30T19:04:17.102+0800oplog893MB
2021-04-30T19:04:20.097+0800oplog929MB
2021-04-30T19:04:23.098+0800oplog968MB
2021-04-30T19:04:26.098+0800oplog1001MB
2021-04-30T19:04:29.097+0800oplog1002MB
2021-04-30T19:04:32.097+0800oplog1003MB
2021-04-30T19:04:35.097+0800oplog1004MB
2021-04-30T19:04:38.097+0800oplog1004MB
2021-04-30T19:04:38.597+0800applied 130029 oplog entries
2021-04-30T19:04:38.597+0800oplog1005MB
2021-04-30T19:04:38.614+08002766634 document(s) restored successfully. 0 document(s) failed to restore.
检查恢复结果
> show dbs
admin 0.000GB
config0.000GB
db3 0.000GB
db4 3.355GB
db5 0.000GB
local 0.000GB
ycsb0.060GB
ycsb1 0.041GB
>
>
> use db5
switched to db db5
>
> db.test.count()
100
可以看到我们前期插入的100记录以及恢复成功。
到此这篇关于MongoDB利用oplog恢复数据介绍的文章就介绍到这了,更多相关oplog数据恢复内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！
