Linux 安装最新版MySQL 教程

Linux 安装最新版MySQL 教程

安装

通过 yum 安装

如果使用centos（如centos 6.3） 执行 yum install mysql mysql-server 的话，默认安装的比较低的版本， mysql 5.1，可以安装官方提供yum repository 下载最新版本，详见 下载页面， 参考 A Quick Guide to Using the MySQL Yum Repository

1. 下载安装

下载yum repository的安装包：

wget https://repo.mysql.com//mysql80-community-release-el6-1.noarch.rpm

2. 升级安装仓库

sudo rpm -Uvh mysql80-community-release-el6-n.noarch.rpm

3. 修改仓库默认安装版本,只开启一个enabled，如5.7

yum makecache 默认更新最新版本，如果同时打开 5.7 与 5.8 的话，默认会安装5.8，可以通过注释（加#号)5.8，然后执行 yum clean all 和 yum makecache 即可。

 vim /etc/yum.repos.d/mysql-community.repo
# Enable to use MySQL 5.7
[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/6/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

4. (可选) 若以前装过mysql，清空数据库数据 datadir ，防止冲突启动不了服务

rm -rf /var/lib/mysql/*

5. 启动 mysql 服务

# 启动服务
service mysqld start
Initializing MySQL database:                               [  OK  ]
Starting mysqld:                                           [  OK  ]
# 查看服务启动状态
service mysqld status
mysqld (pid  5089) is running...
# 查看临时密码
sudo grep 'temporary password' /var/log/mysqld.log
# 登录 mysql
mysql -u root -p

6. 设置密码

# 修改密码安全级别
set global validate_password_policy=0;
Query OK, 0 rows affected (0.00 sec)
# 修改密码最小长度
set global validate_password_length=4;
Query OK, 0 rows affected (0.00 sec)
# 设置密码
# 方法一
set password = password('engine');
Query OK, 0 rows affected, 1 warning (0.00 sec)
# 方法二
ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!';

mysql> create user clouder identified by 'engine';
Query OK, 0 rows affected (0.00 sec)

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> select host,user,password from user;
ERROR 1054 (42S22): Unknown column 'password' in 'field list'
mysql> grant all privileges on oa.* to 'clouder'@'%'identified by 'engine' with grant option;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)