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tar包解压安装
一、检查环境
#卸载系统自带的Mariadb
[root@Meng ~]# rpm -qa|grep mariadb
mariadb-libs-5.5.44-2.el7.centos.x86_64
[root@Meng ~]# rpm -e --nodeps mariadb-libs-5.5.44-2.el7.centos.x86_64
#删除etc目录下的my.cnf文件
[root@Meng ~]# rm /etc/my.cnf
rm: cannot remove ?etc/my.cnf? No such file or directory
#检查mysql是否存在
[root@Meng ~]# rpm -qa | grep mysql
[root@Meng ~]#
#检查mysql组和用户是否存在，如无创建
[root@Meng ~]# cat /etc/group | grep mysql
[root@Meng ~]# cat /etc/passwd | grep mysql
#创建mysql用户组
[root@Meng ~]# groupadd mysql
#创建一个用户名为mysql的用户并加入mysql用户组
[root@Meng ~]# useradd -g mysql mysql
#制定password 为222222
[root@Meng ~]# passwd mysql
Changing password for user mysql.
New password:
BAD PASSWORD: The password is a palindrome
Retype new password:
passwd: all authentication tokens updated successfully.
#安装到/usr/local
[root@Meng local]# wget https://cdn.mysql.com//Downloads/mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz
[root@Meng local]# tar -zxvf mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz
[root@Meng local]# mv mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz/ mysql
#更改所属的组和用户
[root@Meng local]# chown -R mysql mysql/
[root@Meng local]# chgrp -R mysql mysql/
[root@Meng local]# cd mysql/
[root@Meng mysql]# mkdir data
[root@Meng mysql]# chown -R mysql:mysql data二、配置文件
[root@Meng mysql]# vim my.cnf[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8
[mysqld]
skip-name-resolve
#设置3306端口
port = 3306
# 设置mysql的安装目录
basedir=/usr/lcoal/mysql
# 设置mysql数据库的数据的存放目录
datadir=/usr/lcoal/mysql/data
# 允许最大连接数
max_connections=200
# 服务端使用的字符集默认为8比特编码的latin1字符集
character-set-server=utf8
# 创建新表时将使用的默认存储引擎
default-storage-engine=INNODB
lower_case_table_names=1
max_allowed_packet=16M点击Esc，输入：wq 保存并退出！
三、安装和初始化
[root@Meng mysql]# bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/[root@Meng mysql]# cp ./support-files/mysql.server /etc/init.d/mysqld
[root@Meng mysql]# chown 777 /etc/my.cnf
[root@Meng mysql]# chmod +x /etc/init.d/mysqld[root@Meng mysql]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!
#设置开机启动
[root@Meng mysql]# chkconfig --level 35 mysqld on
[root@Meng mysql]# chkconfig --list mysqld
[root@Meng mysql]# chmod +x /etc/rc.d/init.d/mysqld
[root@Meng mysql]# chkconfig --add mysqld
[root@Meng mysql]# chkconfig --list mysqld
[root@Meng mysql]# service mysqld status
SUCCESS! MySQL running (6666)四、配置环境变量
[root@Meng ~]#vim /etc/profile
一定要配置好！！！
不然会出现已安装 MySQL，但执行 mysql 命令提示命令找不到的问题！
五、登陆数据库
1、获得初始密码
[root@Meng bin]# cat /root/.mysql_secret 2、修改密码
[root@Meng mysql]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.23
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> set PASSWORD = PASSWORD('meng_2018');
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)3、添加远程访问权限
mysql> use mysql
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> update user set host='%' where user='root';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select host,user from user;
+-----------+---------------+
| host | user |
+-----------+---------------+
| % | root |
| localhost | mysql.session |
| localhost | mysql.sys |
+-----------+---------------+
3 rows in set (0.00 sec)
create user 'xxx'@'%' identified by '123'; 这里 @‘%’ 表示在任何主机都可以登录4、重启生效
mysql> quit
Bye
[root@Meng mysql]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS! 5、在任何目录下可以登录mysql
[root@Meng mysql]# ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql开始是用yum的安装方式，但总出现问题，最终选择的压缩包的方式，以此记录，愿大家顺利安装！