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

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Installed Packages

mysql.x86_64

 

yum remove mysql.x86_64

 

1.下载安装

wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

(axel多线程下载: axel -n 10 https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz )

 

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

 

 

http://blog.51cto.com/pengjc/1861088

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

http://www.voidcn.com/article/p-zrikccdi-hr.html