Centos 6.5安装mysql

转载自：https://www.cnblogs.com/leffss/p/8512773.html

一．安装前准备

安装采用二进制包方式，软件包5.7.19版本下载地址：https://dev.mysql.com/downloads/mysql/

选择MYSQL Community Server版本再根据操作系统和版本选择性下载

二．解压安装

1.创建mysql用户

[root@server ~]# useradd -s /sbin/nologin mysql

2.解压安装

[root@server ~]# tar xvf mysql-5.7.19.tar.gz

[root@server ~]# /bin/mv –f mysql-5.7.19 /usr/local/mysql

[root@server ~]# mkdir /data/mysql_data

[root@server ~]# chown mysql. -R /usr/local/mysql /data/mysql_data

[root@server ~]# cp /usr/loca/mysql/support-files/mysql.server /etc/init.d/mysqld

[root@server ~]# chmod a+x /etc/init.d/mysqld

[root@server ~]# chkconfig --add mysqld

[root@server ~]# chkconfig mysqld on

[root@server ~]# echo 'export PATH=$PATH:/usr/local/mysql/bin' >> /etc/profile

3.初始化mysql

/usr/local/mysql/bin/mysqld --initialize --basedir=/usr/local/mysql --datadir=/data/mysql_data  --user=mysql

初始化成功后会得到一个随机的初始化root密码显示在控制台，如果控制台没有显示，请在/var/log/message日志中查找，保存待用

4.设置mysql配置文件

[root@server ~]# vi /etc/my.cnf

[client]

port=3306

default-character-set=utf8

[mysqld]

datadir=/data/mysql_data

user=mysql

port=3306

character-set-server='utf8'

collation-server='utf8_general_ci'

skip-external-locking

key_buffer_size = 16M

wait_timeout=2880000

interactive_timeout = 2880000

max_allowed_packet = 1024M

table_open_cache = 64

sort_buffer_size = 512K

net_buffer_length = 8K

read_buffer_size = 256K

read_rnd_buffer_size = 512K

myisam_sort_buffer_size = 8M

max_connections=1024

max_connect_errors=20000

#innodb_additional_mem_pool_size=4M

innodb_flush_log_at_trx_commit=2

innodb_log_buffer_size=256M

innodb_buffer_pool_size=256M

innodb_autoextend_increment=128

innodb_log_file_size=256M

innodb_thread_concurrency=8

innodb_flush_method=O_DIRECT

thread_cache_size=8

symbolic-links=0

[mysqld_safe]

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

注：此配置仅供参考，不同主机根据主机配置以及需求做配置

三．启动mysql

1.启动

[root@server ~]# service mysqld start

2.登陆mysql配置root密码

使用初始化时随机分配的root密码登陆，并修改root密码，如不修改，无法做任何数据操作。

[root@server ~]# mysql –uroot –p

mysql > SET PASSWORD = PASSWORD('123456');            #设置新root密码

mysql > ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;

mysql > flush privileges;

至此，mysql安装完成