MySQL installation and use of the client

 
 
 

Install MySQL

Download MySQLyum source

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm 

 
Create MySQLyum source

rpm -ivh mysql-community-release-el7-5.noarch.rpm

 
Install MySQL server

yum -y install mysql-server

 
Set boot up

systemctl enable mysqld && systemctl start mysqld

 
Character set configuration:

vim /etc/my.cnf
 
default-character-set = utf8
[mysql.server]
default-character-set = utf8
[client]
default-character-set = utf8

[mysql.server]
default-character-set = utf8
[client]
default-character-set = utf8
[mysqld]
# 设置禁用dns解析，但是，这样不能在mysql的授权表中使用主机名了，只能使用IP
skip-name-resolve
[mysqld]
# #设置连接超时时间，默认28800
wait_timeout=900
# #设置不区分大小写，
# #1表名存储在磁盘是小写的，但是比较的时候是不区分大小写
# #0表名存储为给定的大小写，比较时区分大小写 
# #2表名存储为给定的大小写，但是比较的时候是小写的
lower_case_table_names=1
#
# #设置最大连接数
max_connections = 1024
# #设置缓冲池大小，如果是专服，一般设置成系统内存的70-80%
innodb_buffer_pool_size = 12G
# #设置缓冲池实例，范围1~64
innodb_buffer_pool_instances = 6

 

给root用户设置密码并授权，默认密码为空
运行命令行：mysql -u root -p
运行命令行：grant all privileges on *.* to root@'%' identified by 'root' with GRANT OPTION;

 
 

MySQL client installation

 

 
 

Modify user password:

 

 

 

 

 

 
 

New library

 

Database name: jobs
Character set: utf8-UTF-8 Unicode
collation: utf8_general_ci After
filling in, click OK, double-click jobs as shown in the figure to show that the database is created successfully.
 

 
 

New table

 

 

 
 

database backup

vim /root/bakmysql.sh

#!/bin/bash
# Name: bakmysql.sh
# THIS IS A ShellScript For Auto DB Backup and Delete old Backup
backupdir=/storage/mysqlbak
time=`date +%Y%m%d%H%M%S`
mysqldump -hlocalhost -uLWPQ_USR -plwpq_sjzxpwd SJZXLWPQ > $backupdir/sjzxlwpq$time.sql
find $backupdir -name "sjzxlwpq*.sql" -type f -mtime+15 -exec rm {
    
    }\; > /dev/null 2>&1

Script description: The database backup path defined by /storage/mysqlbak can be customized. The file system must contain this folder-
uLWPQ_USR is the specified database user name-
plwpq_sjzxpwd is the specified database user password
SJZXLWPQ is the specified data to be backed up
sjzxlwpq$time. sql is the name of the defined database
Create a scheduled task
Run the command line: vim /etc/crontab
30 21 * * * root sh /root/bakmysql.sh
Description: Perform a backup every day at 21:30