mysql5.632下载_mysql安装-CentOS6下解压安装mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

删除已经安装版本

yum list installed mysql

[root@localhost ~]# yum list installed mysql

Loaded plugins: fastestmirror, refresh-packagekit, security

Loading mirror speeds from cached hostfile

* base: mirrors.cn99.com

* extras: mirrors.cn99.com

* updates: mirrors.cn99.com

Installed Packages

mysql.x86_64

yum remove mysql.x86_64

1.下载安装

tar -xvzf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

mv mysql-5.7.20-linux-glibc2.12-x86_64 /usr/local/mysql

添加用户及用户分组、目录权限

groupadd mysql

useradd mysql -g mysql

cd mysql

chown -R mysql .

chgrp -R mysql .

安装依赖库

yum install libaio

yum install -y libnuma.so.1

安装数据库(数据库初始化)

cd /usr/local/mysql

mkdir data

cd /usr/local/mysql/bin

./mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data

-------注意,数据存储目录，因为/目录空间很小不够使用，所以我把数据存储到 /data/mysql57下了,即

mkdir /data/mysql57

chown -R mysql /data/mysql57

chgrp -R mysql /data/mysql57

cd /usr/local/mysql/bin

./mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/data/mysql57

这里可能会遇到的问题：

Installing MySQL system tables..../bin/mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory

原因：是用yum 安装的libnuma.so.1，安装时默认安装的是32的，但db需要的是64位的

解决办法：1.如果已经安装了libnuma.so.1，先yum remove libnuma.so.1；安装 yum -y install numactl.x86_64

2.启动登陆

cd /usr/local/mysql/support-files

./mysql.server start

登录mysql，此版本最新版不许空密码登录，实际上有个初始化密码保存在/root/.mysql_secret这个文件里面，用这个密码第一次登录后，再修改密码。因此先cat查看下初始化密码(随机的，每次安装看到的密码都不一样)：

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

cd /usr/local/mysql/bin

./mysql -uroot -pI+0tKc3(kDS/

改mysql的root密码，新密码在此为'leizm'

mysql> set password=password('12root');

Query OK, 0 rows affected, 1 warning (0.00 sec)

GRANT ALL PRIVILEGES ON *.* TO root@'%' identified by '123456a';

flush privileges;

3. 添加系统服务

shell> cp support-files/mysql.server /etc/init.d/mysqldshell> service mysqld start

如果启动过程或mysql客户端连接有问题配置 my.cnf

vi /etc/my.cnf

[mysqld]

bind-address=0.0.0.0

#mysql安装根目录

basedir = /usr/local/mysql

#datadir=/var/lib/mysql

datadir=/data/mysql57

#socket=/var/lib/mysql/mysql.sock

socket=/data/mysql57/mysql.sock

user=mysql

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

#Port number to use for connections.

port=15024

#innodb_buffer_pool_size=256M

max_allowed_packet = 32M

#query_cache_size = 128M

max_connections=300

log-bin=mysql-bin

server-id=10632

[client]

socket =/data/mysql57/mysql.sock

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

MySql5.7 配置文件 my.cnf 设置