Linux系统安装mysql详细步骤

1、Mysql安装在/usr/local/mysql目录里面;

#mkdir /usr/local/mysql

2、下载MySQL压缩包

#wget http://dev.MySQL.com/get/Downloads/MySQL-5.7/mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz 

3、解压并复制

#tar -xvf mysql-5.7.11-Linux-glibc2.5-x86_64.tar.gz

#mv mysql-5.7.11-Linux-glibc2.5-x86_64/* /usr/local/mysql/

4、创建data目录

#mkdir /usr/local/mysql/data

5、创建mysql用户组及其用户

#groupadd mysql

#useradd -r -g mysql mysql

6、初始化数据

root@localhost mysql] ./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

2016-01-20 02:47:35 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize 2016-01-20 02:47:45 [WARNING] The bootstrap log isn't empty: 2016-01-20 02:47:45 [WARNING] 2016-01-19T18:47:36.732678Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead 2016-01-19T18:47:36.750527Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000) 2016-01-19T18:47:36.750560Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)

 

7、复制配置文件到 /etc/my.cnf

#cp -a ./support-files/my-default.cnf /etc/my.cnf (选择y)

8、MySQL的服务脚本放到系统服务中

#cp -a ./support-files/mysql.server /etc/init.d/mysqld

修改my.cnf文件 

# These are commonly set, remove the # and set as required.
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306
# server_id = .....
socket = /tmp/mysql.sock
character-set-server = utf8

# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M

 

9、创建In

#ln -s /usr/local/mysql/ /usr/bin/

10、启动服务

#service mysqld start

11、初始化密码

mysql5.7会生成一个初始化密码，在root中.mysql_secret文件中。

[root@localhost ~]# cat /root/.mysql_secret

# Password set for user 'root@localhost' at 2017-03-16 00:52:34

ws;fmT7yh0CM

12、登录并修改密码

[root@localhost ~]# mysql -u root -p

alter user root@localhost identified by '自己的密码';

flush privileges;

13、用本地服务连接时报错：

Host 'xxx' is not allowed to connect to this MySQL server.

解决报错：

mysql> update user set host = '%' where user = 'root';

mysql>flush privileges;

 14、重新连接，OK!