发布于 2017-08-31 18:35:28 | 40 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的Mysql教程,程序狗速度看过来!

Mysql关系型数据库管理系统

MySQL是一个开放源码的小型关联式数据库管理系统,开发者为瑞典MySQL AB公司。MySQL被广泛地应用在Internet上的中小型网站中。由于其体积小、速度快、总体拥有成本低,尤其是开放源码这一特点,许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。


这篇文章主要为大家详细介绍了linux下使用RPM安装mysql5.7.17的相关代码,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

linux下MySQL5.7 rpm安装方式记录,供大家参考,具体内容如下

删除旧包:


# rpm -qa | grep -i mysql
# rpm -ev mysql-libs-* --nodeps

安装rpm包:


# rpm -ivh mysql-community-common-5.7.17-1.el7.x86_64.rpm
# rpm -ivh mysql-community-libs-5.7.17-1.el7.x86_64.rpm
# rpm -ivh mysql-community-client-5.7.17-1.el7.x86_64.rpm
# rpm -ivh mysql-community-server-5.7.17-1.el7.x86_64.rpm

启动、停止:


# service mysqld start
# service mysqld stop
# service mysqld status

初始随机密码:


# cat /var/log/mysqld.log | more

修改初始密码及授权远程访问:


# mysql -uroot -p
mysql> set password='Pwd@123456';
mysql> grant all privileges on *.* to 'root'@'%' identified by 'Pwd@123456';

密码复杂度属性:


mysql> set global validate_password_policy=0;

validate_password_policy有以下取值:(默认是1,即MEDIUM,所以刚开始设置的密码必须符合长度,且必须含有数字,小写或大写字母,特殊字符。)

修改数据目录:

 新目录需要给mysql用户授权,mysqld_safe日志文件授权,关闭selinux(没找到相关策略设置的方法)


# mkdir /data/mysql/data
# mv /var/lib/mysql/* /data/mysql/data/
# mkdir /data/mysql/log
# chown mysql:mysql -R /data/mysql
# touch mysqld_safe.log
# chown mysql:mysql mysqld_safe.log
# vi /etc/my.cnf
/**
[client]
port = 3306
socket = /data/mysql/log/mysql.sock
default-character-set=utf8

[mysql]
no-auto-rehash
socket=/data/mysql/log/mysql.sock
default-character-set=utf8

[mysqld]
port = 3306
socket = /data/mysql/log/mysql.sock
character-set-server=utf8
lower_case_table_names=1
basedir=/usr
datadir=/data/mysql/data
log-error=/data/mysql/log/error.log
pid-file=/data/mysql/log/mysql.pid
init_connect='SET NAMES utf8'
symbolic-links=0

skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

[mysqld_safe]
log-error=/data/mysql/log/mysqld_safe.log
*/
# getenforce
Enforcing
# setenforce 0
# vi /etc/selinux/config
/**
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#   enforcing - SELinux security policy is enforced.
#   permissive - SELinux prints warnings instead of enforcing.
#   disabled - No SELinux policy is loaded.
#SELINUX=enforcing
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#   targeted - Targeted processes are protected,
#   mls - Multi Level Security protection.
SELINUXTYPE=targeted 
*/
# service mysqld start

其他命令:


# mysqladmin -u root -p password
mysql> select version();


# chkconfig --list
# chkconfig --level 345 mysqld on
# netstat -na | grep 3306

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持PHPERZ。



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