CentOS 6.5/6.6 安装mysql 5.7 最完整版教程

Step1: 检测系统是否自带安装mysql

#yum list installed | grep mysql

Step2: 删除系统自带的mysql及其依赖 命令：

# yum -y remove mysql-libs.x86_64

Step3: 给CentOS添加rpm源，并且选择较新的源 命令：

#wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm#yum localinstall mysql-community-release-el6-5.noarch.rpm# yum repolist all | grep mysql# yum-config-manager --disable mysql55-community# yum-config-manager --disable mysql56-community# yum-config-manager --enable mysql57-community-dmr# yum repolist enabled | grep mysql

Step4:安装mysql 服务器 命令：

# yum install mysql-community-server

Step5: 启动mysql 命令:

#service mysqld start

Step6: 查看mysql是否自启动,并且设置开启自启动 命令:

# chkconfig --list | grep mysqld# chkconfig mysqld on

Step7: mysql安全设置 命令：

# mysql_secure_installation

那是由于mysql-community-server 5.7的密码是一个默认的随机密码，这个初始密码，mysql又不告诉你，我们需要重设这个密码。

service mysqld stopmysqld_safe --skip-grant-tables &mysql -u rootuse mysql;update user set authentication_string=password('1111') where user='root';flush privileges;quitservice mysqld restart

1. 登录mysql 或者 ps ax|grep mysqld

[root@test /]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 92
Server version: 5.1.66 Source distribution

Copyright (c) 2000, 2012, 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>

2. 使用命令show global variables like 'port';查看端口号

mysql> show global variables like 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3306 |
+---------------+-------+
1 row in set (0.00 sec)


3. 修改端口，编辑/etc/my.cnf文件，早期版本有可能是my.conf文件名，增加端口参数，并且设定端口，注意该端口未被使用，保存退出。

[root@test etc]# vi my.cnf
[mysqld]
port=3506
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

"my.cnf" 11L, 261C written
[root@test etc]#

4. 重新启动mysql

[root@test ~]# /etc/init.d/mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ]

5.再次登录后检查端口已修改为’3506’.

[root@test etc]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.66 Source distribution

Copyright (c) 2000, 2012, 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 global variables like 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3506 |
+---------------+-------+
1 row in set (0.00 sec)

mysql>