mysql进阶
1. 二进制格式mysql安装
//下载二进制格式的mysql软件包
[root@localhost ~]# cd /usr/src/
[root@localhost src]# wget https://downloads.mysql.com/archives/get/file/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
--2018-08-13 23:56:27-- https://downloads.mysql.com/archives/get/file/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
Resolving downloads.mysql.com (downloads.mysql.com)... 137.254.60.14
Connecting to downloads.mysql.com (downloads.mysql.com)|137.254.60.14|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz [following]
......
Saving to: ‘mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz’
100%[=====================================>] 643,790,848 2.46MB/s in 4m 20s
2018-08-14 00:00:50 (2.36 MB/s) - ‘mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz’saved [643790848/643790848]
//创建用户和组
[root@localhost src]# groupadd -r mysql
[root@localhost src]# useradd -M -s /sbin/nologin -g mysql mysql
//解压软件至/usr/local/
[root@localhost src]# ls
debug kernels mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
[root@localhost src]# tar xf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
[root@localhost ~]# ls /usr/local/
bin games lib libexec sbin src
etc include lib64 mysql-5.7.22-linux-glibc2.12-x86_64 share
[root@localhost ~]# cd /usr/local/
[root@localhost local]# ln -sv mysql-5.7.22-linux-glibc2.12-x86_64/ mysql
‘mysql’ -> ‘mysql-5.7.22-linux-glibc2.12-x86_64/’
[root@localhost local]# ll
total 0
drwxr-xr-x. 2 root root 6 Mar 10 2016 bin
drwxr-xr-x. 2 root root 6 Mar 10 2016 etc
drwxr-xr-x. 2 root root 6 Mar 10 2016 games
drwxr-xr-x. 2 root root 6 Mar 10 2016 include
drwxr-xr-x. 2 root root 6 Mar 10 2016 lib
drwxr-xr-x. 2 root root 6 Mar 10 2016 lib64
drwxr-xr-x. 2 root root 6 Mar 10 2016 libexec
lrwxrwxrwx 1 root root 36 Aug 14 16:00 mysql -> mysql-5.7.22-linux-glibc2.12-x86_64/
drwxr-xr-x 9 root root 129 Aug 14 00:16 mysql-5.7.22-linux-glibc2.12-x86_64
drwxr-xr-x. 2 root root 6 Mar 10 2016 sbin
drwxr-xr-x. 5 root root 49 Jun 13 19:03 share
drwxr-xr-x. 2 root root 6 Mar 10 2016 src
//修改目录/usr/local/mysql的属主属组
[root@localhost ~]# chown -R mysql.mysql /usr/local/mysql
[root@localhost ~]# ll /usr/local/mysql -d
lrwxrwxrwx 1 mysql mysql 36 Aug 14 16:00 /usr/local/mysql -> mysql-5.7.22-linux-glibc2.12-x86_64/
//添加环境变量
[root@localhost ~]# ls /usr/local/mysql
bin COPYING docs include lib man README share support-files
[root@localhost ~]# echo 'export PATH=/usr/local/mysql/bin:$PATH' > /etc/profile.d/mysql.sh
[root@localhost ~]# . /etc/profile.d/mysql.sh
[root@localhost ~]# echo $PATH
/usr/local/mysql/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
//建立数据存放目录
[root@localhost mysql]# mkdir /opt/data
[root@localhost mysql]# chown -R mysql.mysql /opt/data/
[root@localhost mysql]# ll /opt/
total 0
drwxr-xr-x 2 mysql mysql 6 Aug 14 16:54 data
//初始化数据库
[root@localhost ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --datadir=/opt/data/
2018-08-15T07:57:46.168380Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2018-08-15T07:57:50.542516Z 0 [Warning] InnoDB: New log files created, LSN=45790
2018-08-15T07:57:50.927286Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2018-08-15T07:57:51.071260Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: e8600890-a060-11e8-b1a2-000c294c50b4.
2018-08-15T07:57:51.074566Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2018-08-15T07:57:51.078089Z 1 [Note] A temporary password is generatedfor root@localhost: jtBzkkb=r5ik
//请注意,这个命令的最后会生成一个临时密码,此处密码是jtBzkkb=r5ik
//再次注意,这个密码是随机的,你的不会跟我一样,一定要记住这个密码,因为一会登录时会用到
//生成配置文件
[root@localhost ~]# cat > /etc/my.cnf <<EOF
> [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
> EOF
[root@localhost ~]# 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
//配置服务启动脚本
[root@localhost ~]# cp -a /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
[root@localhost ~]# sed -ri 's#^(basedir=).*#\1/usr/local/mysql#g' /etc/init.d/mysqld
[root@localhost ~]# sed -ri 's#^(datadir=).*#\1/opt/data#g' /etc/init.d/mysqld
//启动mysql
[root@localhost ~]# /etc/init.d/mysqld start
Starting MySQL.Logging to '/opt/data/localhost.localdomain.err'.
SUCCESS!
[root@localhost ~]# ps -ef|grep mysql
root 1521 1 0 01:58 pts/0 00:00:00 /bin/sh /usr/local/mysql/binmysqld_safe --datadir=/opt/data --pid-file=/opt/data/mysql.pid
mysql 1699 1521 0 01:58 pts/0 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/opt/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=localhost.localdomain.err --pid-file=/opt/data/mysql.pid --socket=/tmp/mysql.sock --port=3306
root 1734 1301 0 01:59 pts/0 00:00:00 grep --color=auto mysql
[root@localhost ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:22 *:*
LISTEN 0 100 127.0.0.1:25 *:*
LISTEN 0 128 :::22 :::*
LISTEN 0 100 ::1:25 :::*
LISTEN 0 80 :::3306 :::*
//修改密码
//使用临时密码登录
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.22
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
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>
//设置新密码
mysql> set password = password('wangqing123!');
Query OK, 0 rows affected, 1 warning (0.00 sec)
2. mysql配置文件
mysql的配置文件为/etc/my.cnf
配置文件查找次序:若在多个配置文件中均有设定,则最后找到的最终生效
/etc/my.cnf --> /etc/mysql/my.cnf --> --default-extra-file=/PATH/TO/CONF_FILE --> ~/.my.cnf
mysql常用配置文件参数:
3. mysql数据库备份与恢复
3.1 数据库常用备份方案
数据库备份方案:
- 全量备份
- 增量备份
- 差异备份
3.2 mysql备份工具mysqldump
//语法:
mysqldump [OPTIONS] database [tables ...]
mysqldump [OPTIONS] --all-databases [OPTIONS]
mysqldump [OPTIONS] --databases [OPTIONS] DB1 [DB2 DB3...]
//常用的OPTIONS:
-uUSERNAME //指定数据库用户名
-hHOST //指定服务器主机,请使用ip地址
-pPASSWORD //指定数据库用户的密码
-P# //指定数据库监听的端口,这里的#需用实际的端口号代替,如-P3307
//备份整个数据库(全备)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| wangqingge |
+--------------------+
5 rows in set (0.00 sec)
mysql> use wangqingge;
Database changed
mysql> show tables;
+----------------------+
| Tables_in_wangqingge |
+----------------------+
| chenshuo |
| guohui |
| wangqing |
+----------------------+
3 rows in set (0.00 sec)
[root@localhost ~]# ls
anaconda-ks.cfg
[root@localhost ~]# mysqldump -uroot -p -h127.0.0.1 --all-databases > all-201808131500.sql
Enter password:
[root@localhost ~]# ls
all-201808131500.sql anaconda-ks.cfg
//备份wangqingge库的wangqing表和guohui表
[root@localhost ~]# mysqldump -uroot -p -h127.0.0.1 wangqingge wangqing guohui > table-201808131500.sql
Enter password:
[root@localhost ~]# ls
all-201808131500.sql anaconda-ks.cfg table-201808131500.sql
//备份wangqingge库
[root@localhost ~]# mysqldump -uroot -p -h127.0.0.1 --databases wangqingge > wq-201808131500.sql
Enter password:
[root@localhost ~]# ls
all-201808131500.sql table-201808131500.sql
anaconda-ks.cfg wq-201808131500.sql
//模拟误删wangqingge数据库
mysql> drop database wangqingge;
Query OK, 3 rows affected (0.02 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
3.3 mysql数据恢复
//恢复wangqingge数据库
[root@localhost ~]# ls
all-201808131500.sql table-201808131500.sql
anaconda-ks.cfg wq-201808131500.sql
[root@localhost ~]# mysql -uroot -p -h127.0.0.1 < all-201808131500.sql
Enter password:
[root@localhost ~]# mysql -uroot -p -h127.0.0.1 -e 'show databases;'
Enter password:
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| wangqingge |
+--------------------+
//恢复wangqingge数据库的wangqing表和guohui表
mysql> use wangqingge;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> source table-201808131500.sql
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
......
......
Query OK, 0 rows affected (0.00 sec)
mysql> show tables;
+----------------------+
| Tables_in_wangqingge |
+----------------------+
| chenshuo |
| guohui |
| wangqing |
+----------------------+
3 rows in set (0.00 sec)
//模拟删除整个数据库
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| wangqingge |
+--------------------+
5 rows in set (0.00 sec)
mysql> drop database wangqingge;
Query OK, 3 rows affected (0.01 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
//恢复整个数据库
[root@localhost ~]# ls
all-201808131500.sql table-201808131500.sql
anaconda-ks.cfg wq-201808131500.sql
[root@localhost ~]# mysql -uroot -p -h127.0.0.1 < all-201808131500.sql
Enter password:
[root@localhost ~]# mysql -uroot -p -h127.0.0.1 -e 'show databases;'
Enter password:
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| wangqingge |
+--------------------+
3.4 差异备份与恢复
3.4.1. mysql差异备份
开启MySQL服务器的二进制日志功能
[mysqld]
basedir = /usr/local/mysql
datadir = /opt/data
socket = /tmp/mysql.sock
port = 3306
user = mysql
pid-file = /tmp/mysql.pid
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@localhost ~]# service mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!
对数据库进行完全备份
[root@localhost ~]# mysql -uroot -pwangqing123!
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.22-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
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 |
| sys |
| wangqing |
+--------------------+
5 rows in set (0.00 sec)
mysql> show tables from wangqing;
+--------------------+
| Tables_in_wangqing |
+--------------------+
| runtime |
| student |
+--------------------+
2 rows in set (0.01 sec)
mysql> select * from wangqing.runtime;
+------+-------+------+
| id | name | age |
+------+-------+------+
| 1 | tom | 10 |
| 2 | jerry | 30 |
+------+-------+------+
2 rows in set (0.01 sec)
mysql> select * from wangqing.student;
+----+-------------+------+
| id | name | age |
+----+-------------+------+
| 1 | tom | 20 |
| 2 | jerry | 23 |
| 3 | wangqing | 25 |
| 4 | sean | 28 |
| 5 | zhangshan | 26 |
| 6 | zhangshan | 20 |
| 7 | lisi | NULL |
| 8 | chenshuo | 10 |
| 9 | wangwu | 3 |
| 10 | qiuyi | 15 |
| 11 | qiuxiaotian | 20 |
+----+-------------+------+
11 rows in set (0.00 sec)
//完全备份
[root@localhost ~]# mysqldump -uroot -pwangqing123! --single-transaction --flush-logs --master-data=2 --all-databases --delete-master-logs > all-201902211406.sql
mysqldump: [Warning] Using a password on the command line interface can be insecure.
[root@localhost ~]# ll
总用量 792
-rw-r--r--. 1 root root 803946 2月 21 13:47 all-201902211406.sql
-rw-------. 1 root root 1259 1月 7 16:39 anaconda-ks.cfg
//增加新内容
[root@localhost ~]# mysql -uroot -pwangqing123!
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.22-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
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> use wangqing;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> insert into runtime values(3,'hehe',20),(4,'xixi',50);
Query OK, 2 rows affected (0.02 sec)
Records: 2 Duplicates: 0 Warnings: 0
mysql> select * from runtime;
+------+-------+------+
| id | name | age |
+------+-------+------+
| 1 | tom | 10 |
| 2 | jerry | 30 |
| 3 | hehe | 20 |
| 4 | xixi | 50 |
+------+-------+------+
4 rows in set (0.00 sec)
mysql> update runtime set age = 40 where id = 3;
Query OK, 1 row affected (0.01 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select * from runtime;
+------+-------+------+
| id | name | age |
+------+-------+------+
| 1 | tom | 10 |
| 2 | jerry | 30 |
| 3 | hehe | 40 |
| 4 | xixi | 50 |
+------+-------+------+
4 rows in set (0.00 sec)
3.4.2. mysql差异备份恢复
模拟误删数据
[root@localhost ~]# mysql -uroot -pwangqing123! -e 'drop database wangqing;'
mysql: [Warning] Using a password on the command line interface can be insecure.
[root@localhost ~]# mysql -uroot -pwangqing123! -e 'show databases;'
mysql: [Warning] Using a password on the command line interface can be insecure.
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
//由上可以看到wangqing这个数据库已被删除
刷新创建新的二进制日志
[root@localhost ~]# ll /opt/data/
总用量 188548
-rw-r-----. 1 mysql mysql 56 2月 20 10:11 auto.cnf
-rw-r-----. 1 mysql mysql 996 2月 21 14:54 ib_buffer_pool
-rw-r-----. 1 mysql mysql 79691776 2月 21 16:09 ibdata1
-rw-r-----. 1 mysql mysql 50331648 2月 21 16:09 ib_logfile0
-rw-r-----. 1 mysql mysql 50331648 2月 20 10:11 ib_logfile1
-rw-r-----. 1 mysql mysql 12582912 2月 21 14:54 ibtmp1
-rw-r-----. 1 mysql mysql 8304 2月 21 08:45 linux-node1.com.err
-rw-r-----. 1 mysql mysql 74620 2月 21 14:54 localhost.err
drwxr-x---. 2 mysql mysql 4096 2月 21 16:03 mysql
-rw-r-----. 1 mysql mysql 154 2月 21 16:09 mysql_bin.000001
-rw-r-----. 1 mysql mysql 19 2月 21 16:09 mysql_bin.index
drwxr-x---. 2 mysql mysql 8192 2月 20 10:11 performance_schema
drwxr-x---. 2 mysql mysql 8192 2月 20 10:11 sys
//刷新创建新的二进制日志
[root@localhost ~]# mysqladmin -uroot -pwangqing123! flush-logs
mysqladmin: [Warning] Using a password on the command line interface can be insecure.
[root@localhost ~]# ll /opt/data/
总用量 188552
-rw-r-----. 1 mysql mysql 56 2月 20 10:11 auto.cnf
-rw-r-----. 1 mysql mysql 996 2月 21 14:54 ib_buffer_pool
-rw-r-----. 1 mysql mysql 79691776 2月 21 16:17 ibdata1
-rw-r-----. 1 mysql mysql 50331648 2月 21 16:18 ib_logfile0
-rw-r-----. 1 mysql mysql 50331648 2月 20 10:11 ib_logfile1
-rw-r-----. 1 mysql mysql 12582912 2月 21 14:54 ibtmp1
-rw-r-----. 1 mysql mysql 8304 2月 21 08:45 linux-node1.com.err
-rw-r-----. 1 mysql mysql 74620 2月 21 14:54 localhost.err
drwxr-x---. 2 mysql mysql 4096 2月 21 16:16 mysql
-rw-r-----. 1 mysql mysql 945 2月 21 16:18 mysql_bin.000001
-rw-r-----. 1 mysql mysql 154 2月 21 16:18 mysql_bin.000002
-rw-r-----. 1 mysql mysql 38 2月 21 16:18 mysql_bin.index
drwxr-x---. 2 mysql mysql 8192 2月 20 10:11 performance_schema
drwxr-x---. 2 mysql mysql 8192 2月 20 10:11 sys
恢复完全备份
[root@localhost ~]# mysql -uroot -pwangqing123! < all-201902211406.sql
mysql: [Warning] Using a password on the command line interface can be insecure.
[root@localhost ~]# mysql -uroot -pwangqing123! -e 'show databases;'
mysql: [Warning] Using a password on the command line interface can be insecure.
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| wangqing |
+--------------------+
[root@localhost ~]# mysql -uroot -pwangqing123! -e 'show tables from wangqing;'
mysql: [Warning] Using a password on the command line interface can be insecure.
+--------------------+
| Tables_in_wangqing |
+--------------------+
| runtime |
| student |
+--------------------+
[root@localhost ~]# mysql -uroot -pwangqing123! -e 'select * from wangqing.runtime;'
mysql: [Warning] Using a password on the command line interface can be insecure.
+------+-------+------+
| id | name | age |
+------+-------+------+
| 1 | tom | 10 |
| 2 | jerry | 30 |
+------+-------+------+
[root@localhost ~]# mysql -uroot -pwangqing123! -e 'select * from wangqing.student;'
mysql: [Warning] Using a password on the command line interface can be insecure.
+----+-------------+------+
| id | name | age |
+----+-------------+------+
| 1 | tom | 20 |
| 2 | jerry | 23 |
| 3 | wangqing | 25 |
| 4 | sean | 28 |
| 5 | zhangshan | 26 |
| 6 | zhangshan | 20 |
| 7 | lisi | NULL |
| 8 | chenshuo | 10 |
| 9 | wangwu | 3 |
| 10 | qiuyi | 15 |
| 11 | qiuxiaotian | 20 |
+----+-------------+------+
恢复差异备份
[root@localhost ~]# ll /opt/data/
总用量 189572
-rw-r-----. 1 mysql mysql 56 2月 20 10:11 auto.cnf
-rw-r-----. 1 mysql mysql 996 2月 21 14:54 ib_buffer_pool
-rw-r-----. 1 mysql mysql 79691776 2月 21 16:20 ibdata1
-rw-r-----. 1 mysql mysql 50331648 2月 21 16:20 ib_logfile0
-rw-r-----. 1 mysql mysql 50331648 2月 20 10:11 ib_logfile1
-rw-r-----. 1 mysql mysql 12582912 2月 21 14:54 ibtmp1
-rw-r-----. 1 mysql mysql 8304 2月 21 08:45 linux-node1.com.err
-rw-r-----. 1 mysql mysql 74620 2月 21 14:54 localhost.err
drwxr-x---. 2 mysql mysql 4096 2月 21 16:20 mysql
-rw-r-----. 1 mysql mysql 945 2月 21 16:18 mysql_bin.000001
-rw-r-----. 1 mysql mysql 786443 2月 21 16:20 mysql_bin.000002
-rw-r-----. 1 mysql mysql 38 2月 21 16:18 mysql_bin.index
drwxr-x---. 2 mysql mysql 8192 2月 20 10:11 performance_schema
drwxr-x---. 2 mysql mysql 8192 2月 20 10:11 sys
drwxr-x---. 2 mysql mysql 96 2月 21 16:20 wangqing
//检查误删数据库的位置在什么地方
[root@localhost ~]# mysql -uroot -pwangqing123!
mysql> show binlog events in 'mysql_bin.000001';
+------------------+-----+----------------+-----------+-------------+---------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+------------------+-----+----------------+-----------+-------------+---------------------------------------+
| mysql_bin.000001 | 4 | Format_desc | 1 | 123 | Server ver: 5.7.22-log, Binlog ver: 4 |
| mysql_bin.000001 | 123 | Previous_gtids | 1 | 154 | |
| mysql_bin.000001 | 154 | Anonymous_Gtid | 1 | 219 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS' |
| mysql_bin.000001 | 219 | Query | 1 | 295 | BEGIN |
| mysql_bin.000001 | 295 | Table_map | 1 | 353 | table_id: 330 (wangqing.runtime) |
| mysql_bin.000001 | 353 | Write_rows | 1 | 410 | table_id: 330 flags: STMT_END_F |
| mysql_bin.000001 | 410 | Xid | 1 | 441 | COMMIT /* xid=2628 */ |
| mysql_bin.000001 | 441 | Anonymous_Gtid | 1 | 506 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS' |
| mysql_bin.000001 | 506 | Query | 1 | 582 | BEGIN |
| mysql_bin.000001 | 582 | Table_map | 1 | 640 | table_id: 330 (wangqing.runtime) |
| mysql_bin.000001 | 640 | Update_rows | 1 | 698 | table_id: 330 flags: STMT_END_F |
| mysql_bin.000001 | 698 | Xid | 1 | 729 | COMMIT /* xid=2630 */ |
| mysql_bin.000001 | 729 | Anonymous_Gtid | 1 | 794 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS' |
| mysql_bin.000001 | 794 | Query | 1 | 898 | drop database wangqing | //此处就是删除数据库的位置,对应的pos位置是794
| mysql_bin.000001 | 898 | Rotate | 1 | 945 | mysql_bin.000002;pos=4 |
+------------------+-----+----------------+-----------+-------------+---------------------------------------+
15 rows in set (0.00 sec)
//使用mysqlbinlog恢复差异备份
[root@localhost ~]# mysqlbinlog --stop-position=794 /opt/data/mysql_bin.000001 |mysql -uroot -pwangqing123!
mysql: [Warning] Using a password on the command line interface can be insecure.
[root@localhost ~]# mysql -uroot -pwangqing123! -e 'select * from wangqing.runtime;'
mysql: [Warning] Using a password on the command line interface can be insecure.
+------+-------+------+
| id | name | age |
+------+-------+------+
| 1 | tom | 10 |
| 2 | jerry | 30 |
| 3 | hehe | 40 |
| 4 | xixi | 50 |
+------+-------+------+