MySQL安装

1> 关闭防火墙和selinux

关闭防火墙

1 service iptables stop
2 chkconfig --level 345 iptables off

关闭selinux

1 setenforce 0
2 cat /etc/SELINUX/config | grep selinux=

查看结果是否为selinux=disabled

2>创建MySQL用户

 1 groupadd -g 54330 mysql
 3 useradd -u 54330 -g mysql mysql
 4 
 5  
 7 cd /u01/mysql
 9 wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz
11 tar -xzvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz
13 mv mysql-5.7.21-linux-glibc2.12-x86_64 mysql57
15 mkdir mysqldata
17 chown -R mysql:mysql /u01/mysql/

修改root，mysql等用户环境变量

root用户在/root下 .bash_profile

mysql用户在/home/mysql下

1 PATH=$PATH:/u01/mysql/mysql57/bin
2 export PATH

3>修改系统参数

root用户修改参数

1 vi /etc/security/limits.conf    
2 mysql   soft    nproc   16384
3 mysql   hard    nproc   16384
4 mysql   soft    nofile  65536
5 mysql   hard    nofile  65536
6 mysql   soft    stack   1024000
7 mysql   hard    stack   1024000

切换到mysql用户

1 su - mysql
2 
3 mkdir -p /u01/mysql/mysqldata/3306
4 mkdir -p /u01/mysql/mysqldata/3306/mybinlog
5 mkdir -p /u01/mysql/mysqldata/3306/mydata_1
6 mkdir -p /u01/mysql/mysqldata/3306/mytmp
7 mkdir -p /u01/mysql/mysqldata/3306/mylog

1 su - root
2 chmod +x /u01/mysql/mysql57/bin/mysqld

4> 初始化

1 /u01/mysql/mysql57/bin/mysqld --initialize --user=mysql --basedir=/u01/mysql/mysql57 --datadir=/u01/mysql/mysqldata/3306/mydata --innodb-undo-tablespaces=4

记下密码，后面登陆使用

数据加密

1 /u01/mysql/mysql57/bin/mysql_ssl_rsa_setup --datadir=/u01/mysql/mysqldata/3306/mydata

先root用户赋予权限 

1 chown mysql:mysql /etc/my.cnf

登录mysql

配置/etc/my.cnf     

 1 [client] 
 2 default-character-set = utf8
 3 
 4 
 5 [mysql]
 6 prompt = [\\u@\\h][\\d]>
 7 
 8 
 9 [mysqld]
10 basedir = /u01/mysql/mysql57
11 datadir = /u01/mysql/mysqldata/3306/mydata
12 port=3306
13 socket = /u01/mysql/mysqldata/3306/mytmp/mysqld.sock
14 pid_file = /u01/mysql/mysqldata/3306/mysqld.pid
15 tmpdir = /u01/mysql/mysqldata/3306/mytmp/
16 slave_load_tmpdir = /u01/mysql/mysqldata/3306/mytmp/
17 log_error = /u01/mysql/mysqldata/3306/mylog/mysqld.log
18 log_bin = /u01/mysql/mysqldata/3306/mybinlog/bin
19 relay_log = /u01/mysql/mysqldata/3306/mybinlog/relay.log
20 server-id=1
21 user=mysql
22 log-slave-updates
23 log-error=mysql1
24 report-host=localhost
25 report-port=3311
26 relay-log-recovery=1
27 master-info-repository=TABLE
28 relay-log-info-repository=TABLE
29 gtid-mode=ON
30 enforce-gtid-consistency=1

5> mysql用户下拉起服务

1 mysqld_safe --defaults-file=/u01/mysql/mysqldata/3306/my.cnf &
2 alter user 'root'@'localhost' identified by '123456';

起停

1 mysqld_safe --defaults-file=/u01/mysql/mysqldata/3306/my.cnf &
2 mysqladmin -uroot -p shutdown