首页 > 数据库> 文章详细

linux-mysql差异备份

2021-05-08 04:32:31 阅读：210 来源： 互联网

标签：rw 17 bin.000003 May 备份 mysql linux NULL

开启MySQL服务器的二进制日志功能

[root@zwy1 ~]# cat /etc/my.cnf 
[mysqld]
basedir = /usr/local/mysql         
datadir = /opt/data   
socket = /tmp/mysql.sock    
port = 3306   
pid-file = /opt/data/mysql.pid   
user = mysql 
skip-name-resolve
server-id=1 #设置服务器标识符
log-bin =mysql_bin #开启二进制日志功能

[root@zwy1 ~]# service mysqld restart #重启服务
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!

完全备份

[root@zwy1 ~]# mysqldump -uroot -p4564949a --single-transaction --flush-logs --master-data=2 --all-databases --delete-master-logs > all-210508.sql
mysqldump: [Warning] Using a password on the command line interface can be insecure.
[root@zwy1 ~]# ls
all-210508.sql  anaconda-ks.cfg  mysql-5.7.33-linux-glibc2.12-x86_64.tar.gz  nginx-1.18.0  nginx-1.18.0.tar.gz  pass

添加新内容

mysql> insert student (name,age)values('lisi',26),('heigou',24);
Query OK, 2 rows affected (0.00 sec)
Records: 2  Duplicates: 0  Warnings: 0

mysql> select *from student;
+----+-----------+------+-------+
| id | name      | age  | score |
+----+-----------+------+-------+
|  1 | tom       |   20 |  NULL |
|  2 | jerry     |   14 |  NULL |
|  3 | zhangshan |   18 |  NULL |
|  4 | lisi      |   26 |  NULL |
|  5 | heigou    |   24 |  NULL |
+----+-----------+------+-------+
5 rows in set (0.00 sec)

mysql> update student set score =90 where name='lisi';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> select *from student;
+----+-----------+------+-------+
| id | name      | age  | score |
+----+-----------+------+-------+
|  1 | tom       |   20 |  NULL |
|  2 | jerry     |   14 |  NULL |
|  3 | zhangshan |   18 |  NULL |
|  4 | lisi      |   26 |    90 |
|  5 | heigou    |   24 |  NULL |
+----+-----------+------+-------+
5 rows in set (0.00 sec)

模拟误删

[root@zwy1 ~]# mysql -e 'drop database school;'
[root@zwy1 ~]# mysql -e 'show databases;'
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+

刷新创建新的二进制日志

[root@zwy1 data]# ll
total 122988
-rw-r-----. 1 mysql mysql       56 May  8 01:17 auto.cnf
-rw-------. 1 mysql mysql     1676 May  8 01:17 ca-key.pem
-rw-r--r--. 1 mysql mysql     1112 May  8 01:17 ca.pem
-rw-r--r--. 1 mysql mysql     1112 May  8 01:17 client-cert.pem
-rw-------. 1 mysql mysql     1676 May  8 01:17 client-key.pem
-rw-r-----. 1 mysql mysql      405 May  8 02:17 ib_buffer_pool
-rw-r-----. 1 mysql mysql 12582912 May  8 03:39 ibdata1
-rw-r-----. 1 mysql mysql 50331648 May  8 03:39 ib_logfile0
-rw-r-----. 1 mysql mysql 50331648 May  8 01:17 ib_logfile1
-rw-r-----. 1 mysql mysql 12582912 May  8 02:18 ibtmp1
drwxr-x---. 2 mysql mysql     4096 May  8 01:17 mysql
-rw-r-----. 1 mysql mysql      177 May  8 02:17 mysql_bin.000002
-rw-r-----. 1 mysql mysql      941 May  8 03:39 mysql_bin.000003
-rw-r-----. 1 mysql mysql      154 May  8 03:39 mysql_bin.000004
-rw-r-----. 1 mysql mysql       57 May  8 03:39 mysql_bin.index
-rw-r-----. 1 mysql mysql        5 May  8 02:18 mysql.pid
drwxr-x---. 2 mysql mysql     8192 May  8 01:17 performance_schema
-rw-------. 1 mysql mysql     1680 May  8 01:17 private_key.pem
-rw-r--r--. 1 mysql mysql      452 May  8 01:17 public_key.pem
-rw-r--r--. 1 mysql mysql     1112 May  8 01:17 server-cert.pem
-rw-------. 1 mysql mysql     1676 May  8 01:17 server-key.pem
drwxr-x---. 2 mysql mysql     8192 May  8 01:17 sys
-rw-r-----. 1 mysql mysql    19203 May  8 02:18 zwy1.err
[root@zwy1 data]# cat mysql_bin.index 
./mysql_bin.000002
./mysql_bin.000003
./mysql_bin.000004

全量备份恢复

[root@zwy1 ~]# mysql  -uroot < all-210508.sql 
[root@zwy1 ~]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.33-log MySQL Community Server (GPL)

Copyright (c) 2000, 2021, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| school             |
| sys                |
+--------------------+
5 rows in set (0.00 sec)

mysql> select * from student;
ERROR 1046 (3D000): No database selected
mysql> select * from  school.student;
+----+-----------+------+-------+
| id | name      | age  | score |
+----+-----------+------+-------+
|  1 | tom       |   20 |  NULL |
|  2 | jerry     |   14 |  NULL |
|  3 | zhangshan |   18 |  NULL |
+----+-----------+------+-------+
3 rows in set (0.00 sec)

检查误删数据库的位置在什么地方

mysql> show binlog events in 'mysql_bin.000003';
+------------------+-----+----------------+-----------+-------------+---------------------------------------+
| Log_name         | Pos | Event_type     | Server_id | End_log_pos | Info                                  |
+------------------+-----+----------------+-----------+-------------+---------------------------------------+
| mysql_bin.000003 |   4 | Format_desc    |        10 |         123 | Server ver: 5.7.33-log, Binlog ver: 4 |
| mysql_bin.000003 | 123 | Previous_gtids |        10 |         154 |                                       |
| mysql_bin.000003 | 154 | Anonymous_Gtid |        10 |         219 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'  |
| mysql_bin.000003 | 219 | Query          |        10 |         293 | BEGIN                                 |
| mysql_bin.000003 | 293 | Table_map      |        10 |         351 | table_id: 99 (school.student)         |
| mysql_bin.000003 | 351 | Write_rows     |        10 |         410 | table_id: 99 flags: STMT_END_F        |
| mysql_bin.000003 | 410 | Xid            |        10 |         441 | COMMIT /* xid=17 */                   |
| mysql_bin.000003 | 441 | Anonymous_Gtid |        10 |         506 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'  |
| mysql_bin.000003 | 506 | Query          |        10 |         580 | BEGIN                                 |
| mysql_bin.000003 | 580 | Table_map      |        10 |         638 | table_id: 99 (school.student)         |
| mysql_bin.000003 | 638 | Update_rows    |        10 |         700 | table_id: 99 flags: STMT_END_F        |
| mysql_bin.000003 | 700 | Xid            |        10 |         731 | COMMIT /* xid=19 */                   |
| mysql_bin.000003 | 731 | Anonymous_Gtid |        10 |         796 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'  |
| mysql_bin.000003 | 796 | Query          |        10 |         894 | drop database school                  |
| mysql_bin.000003 | 894 | Rotate         |        10 |         941 | mysql_bin.000004;pos=4                |
+------------------+-----+----------------+-----------+-------------+---------------------------------------+
15 rows in set (0.00 sec)

使用mysqlbinlog恢复差异备份

[root@zwy1 ~]# mysqlbinlog  --stop-position=796 /opt/data/mysql_bin.000003 |mysql -uroot -p4564949a
mysql: [Warning] Using a password on the command line interface can be insecure.
[root@zwy1 ~]# mysql -e 'select * from school.student;'
+----+-----------+------+-------+
| id | name      | age  | score |
+----+-----------+------+-------+
|  1 | tom       |   20 |  NULL |
|  2 | jerry     |   14 |  NULL |
|  3 | zhangshan |   18 |  NULL |
|  4 | lisi      |   26 |    90 |
|  5 | heigou    |   24 |  NULL |
+----+-----------+------+-------+

标签：rw,17,bin.000003,May,备份,mysql,linux,NULL
来源： https://www.cnblogs.com/Mariko/p/14743384.html

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

ICode9

linux-mysql差异备份