mysqldump 全备

[root@db01 b]#mysqldump -uroot -poldboy123 -A -R --triggers --master-data=2 --single-transaction | gzip > /b/all_date +%F-%H-%M-%S.sql.gz

mysql> create table ttt.nnn(id int primary key auto_increment not null, name char(20) not null);
mysql> insert into nnn values(1,'aa');
Query OK, 1 row affected (0.00 sec)

mysql> insert into nnn values(2,'bb');
Query OK, 1 row affected (0.00 sec)

mysql> insert into nnn values(3,'cc');
Query OK, 1 row affected (0.00 sec)

mysql> insert into nnn values(4,'dd');
Query OK, 1 row affected (0.00 sec)

mysql> select * from ttt.nnn;
+----+------+
| id | name |
+----+------+
| 1 | aa |
| 2 | bb |
| 3 | cc |
| 4 | dd |
+----+------+

mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000028 | 850 | | | |
+------------------+----------+--------------+------------------+-------------------+

mysql> drop databases ttt;

全备时候加了 master-data=2 ,生成的备份文件,22行有恢复数据的起点,120
[root@db01 ~]#sed -n '22p' /b/all_2019-03-11-19-03-55.sql
-- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000028', MASTER_LOG_POS=120;

查看当前binlog是000028
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000028 | 939 | | | |
+------------------+----------+--------------+------------------+-------------------+

结束点位置 ,就是drop pos的位置
mysql> show binlog events in "mysql-bin.000028";
+------------------+-----+-------------+-----------+-------------+-----------------------------------------------------------------------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+------------------+-----+-------------+-----------+-------------+-----------------------------------------------------------------------------------------------------+
| mysql-bin.000028 | 4 | Format_desc | 6 | 120 | Server ver: 5.6.40-log, Binlog ver: 4 |
| mysql-bin.000028 | 120 | Query | 6 | 224 | create database ttt charset utf8 |
| mysql-bin.000028 | 224 | Query | 6 | 384 | use ttt; create table ttt.nnn(id int primary key auto_increment not null, name char(20) not null) |
| mysql-bin.000028 | 384 | Query | 6 | 455 | BEGIN |
| mysql-bin.000028 | 455 | Table_map | 6 | 503 | table_id: 323 (ttt.nnn) |
| mysql-bin.000028 | 503 | Write_rows | 6 | 546 | table_id: 323 flags: STMT_END_F |
| mysql-bin.000028 | 546 | Table_map | 6 | 594 | table_id: 323 (ttt.nnn) |
| mysql-bin.000028 | 594 | Write_rows | 6 | 637 | table_id: 323 flags: STMT_END_F |
| mysql-bin.000028 | 637 | Table_map | 6 | 685 | table_id: 323 (ttt.nnn) |
| mysql-bin.000028 | 685 | Write_rows | 6 | 728 | table_id: 323 flags: STMT_END_F |
| mysql-bin.000028 | 728 | Table_map | 6 | 776 | table_id: 323 (ttt.nnn) |
| mysql-bin.000028 | 776 | Write_rows | 6 | 819 | table_id: 323 flags: STMT_END_F |
| mysql-bin.000028 | 819 | Xid | 6 | 850 | COMMIT /* xid=3690 */ |
| mysql-bin.000028 | 850 | Query | 6 | 939 | drop database ttt |
+------------------+-----+-------------+-----------+-------------+-----------------------------------------------------------------------------------------------------+

[root@db01 ~]#mysqlbinlog -uroot -poldboy123 --start-position=120 --stop-position=850 /data/mysql/mysql-bin.000028 > /b/delttt_binlog.sql

mysql> set sql_log_bin=1

恢复全备:
mysql> source /b/all_2019-03-11-19-03-55.sql;
mysql> source /b/delttt_binlog.sql;

数据恢复了
mysql> select * from ttt.nnn;
+----+------+
| id | name |
+----+------+
| 1 | aa |
| 2 | bb |
| 3 | cc |
| 4 | dd |
+----+------+