數據庫備份語句
mysqldump -S /tmp/mysql3309.sock -u root -pMySQL8.0 \
--single-transaction \
--quick --flush-logs \
--triggers \
--routines \
--events \
--set-gtid-purged=OFF \
--databases testdb > testdb.dump備份時表 nw 存在以下數據
mysql> select * from nw;
+---------------------+
| dt |
+---------------------+
| 2018-11-12 10:20:26 |
| 2018-11-12 10:20:27 |
| 2018-11-12 10:20:28 |
| 2018-11-12 10:20:28 |
| 2018-11-12 10:20:29 |
| 2018-11-12 10:30:53 |
| 2018-11-12 10:30:54 |
| 2018-11-12 10:30:55 |
| 2018-11-12 10:30:55 |
| 2018-11-12 10:30:56 |
| 2018-11-12 10:30:57 |
| 2018-11-12 10:30:57 |
+---------------------+將最近的備份和備份後的二進制文件拷貝另一臺有 MySQL 實例的服務器B
將二進制文件提取爲明文文件，查詢數據刪除的時間點
mysqlbinlog --base64-output=decode-rows -v binlog.000006 > result.sql
#181112 10:34:23 server id 3309 end_log_pos 2846 Delete_rows: table id 694 flags: STMT_END_F
### DELETE FROM `testdb`.`nw`
### WHERE
### @1=1541989226
### DELETE FROM `testdb`.`nw`在服務器B上還原數據庫
mysql -S /tmp/mysql3309.sock -u root -pMySQL8.0 < testdb.dump將刪除數據前的二進制日誌重新應用到數據庫
mysqlbinlog --stop-datetime="2018-11-12 10:34:00" \
--skip-gtids binlog.000006 | \
mysql -S /tmp/mysql3309.sock -u root -pMySQL8.0將表 nw dump 出來
mysqldump -S /tmp/mysql3309.sock -u root -pMySQL8.0 \
--single-transaction \
--quick --flush-logs \
--triggers \
--routines \
--events \
--set-gtid-purged=OFF \
testdb nw > nw.dump提取 nw.dump 中的 insert 語句
grep "INSERT INTO \`nw\` VALUES" nw.dump > insert.sql將 insert 語句在原數據庫執行，查詢結果數據已經恢復
mysql> use sbtest;
mysql> source insert.sql
mysql> select * from nw;
+---------------------+
| dt |
+---------------------+
| 2018-11-12 10:20:26 |
| 2018-11-12 10:20:27 |
| 2018-11-12 10:20:28 |
| 2018-11-12 10:20:28 |
| 2018-11-12 10:20:29 |
| 2018-11-12 10:30:53 |
| 2018-11-12 10:30:54 |
| 2018-11-12 10:30:55 |
| 2018-11-12 10:30:55 |
| 2018-11-12 10:30:56 |
| 2018-11-12 10:30:57 |
| 2018-11-12 10:30:57 |
| 2018-11-12 10:33:37 |
| 2018-11-12 10:33:38 |
| 2018-11-12 10:33:39 |
| 2018-11-12 10:33:40 |
| 2018-11-12 10:33:40 |
| 2018-11-12 10:33:41 |
| 2018-11-12 10:33:42 |
| 2018-11-12 10:33:42 |
| 2018-11-12 10:33:43 |
+---------------------+注意：不要在原服務器上執行還原操作