1.下载安装包
MySQL 官方下载地址：https://dev.mysql.com/downloads/mysql/
MySQL 5.7官方安装文档：https://dev.mysql.com/doc/refman/5.7/en/binary-installation.html
2.安装依赖包
MySQL依赖于libaio 库。如果这个库没有在本地安装，数据目录初始化和后续的服务器启动步骤将会失败。请使用适当的软件包管理器进行安装。例如，在基于Yum的系统上：
shell> yum search libaio
shell> yum install libaio
3.创建一个mysql用户和组
shell> groupadd mysql
shell> useradd -r -g mysql -s /bin/false mysql
4.解压到指定目录
shell> tar -zxvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz -C /usr/local
shell> cd /usr/local
shell> mv mysql-5.7.21-linux-glibc2.12-x86_64 mysql
5.配置数据库目录
数据目录：/usr/local/mysql/data
参数文件my.cnf：/usr/local/mysql/etc/my.cnf
错误日志log-error：/usr/local/mysql/log/mysql_error.log
二进制日志log-bin：/usr/local/mysql/log/mysql_bin.log
慢查询日志slow_query_log_file：//usr/local/mysql/log/mysql_slow_query.log
套接字socket文件：/usr/local/mysql/run/mysql.sock
pid文件：/usr/local/mysql/run/mysql.pid
shell> mkdir -p /usr/local/mysql/{data,log,etc,run}
shell> chown -R mysql:mysql /usr/local/mysql
shell> chmod 750 /usr/local/mysql/{data,log,etc,run}
6.配置my.cnf文件
在/usr/local/mysql/etc/下创建my.cnf文件，加入如下参数，其他参数根据需要配置
[client]
port = 3306
socket = /usr/local/mysql/run/mysql.sock
[mysqld]
port = 3306
socket = /usr/local/mysql/run/mysql.sock
pid_file = /usr/local/mysql/run/mysql.pid
datadir = /usr/local/mysql/data
default_storage_engine = InnoDB
max_allowed_packet = 128M
max_connections = 2048
open_files_limit = 65535
skip-name-resolve
lower_case_table_names=1
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect=‘SET NAMES utf8mb4‘
innodb_buffer_pool_size = 128M
innodb_log_file_size = 128M
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 0
key_buffer_size = 16M
log-error = /usr/local/mysql/log/mysql_error.log
log-bin = /usr/local/mysql/log/mysql_bin.log
slow_query_log = 1
slow_query_log_file = /usr/local/mysql/log/mysql_slow_query.log
long_query_time = 5
tmp_table_size = 16M
max_heap_table_size = 16M
query_cache_type = 0
query_cache_size = 0
server-id=1
7.设置临时密码
grep ‘temporary password‘ /usr/local/mysql/log/mysql_error.log
8.初始化
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql--datadir=/usr/local/mysql/data --initialize
9.将mysqld设置开启自动启动
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chkconfig --add mysqld
10.复制配置文件my.cnf
cp /usr/local/mysql/etc/my.cnf /etc/my.cnf (提示覆盖就覆盖)
11.启动mysql服务
service mysql start
12.进入mysql
cd /usr/local/mysql/bin
./ mysql -u root -p(临时密码)
13.修改密码
重新设置密码
SET PASSWORD FOR‘root‘@localhost=PASSWORD(‘admin‘); #对应的换成你自己的密码即可
14、开启远程权限
grant all privileges on *.* to ‘新用户名‘@‘%‘ identified by ‘新密码‘;
flush privileges;
15.配置环境变量
vim /etc/profile
export PATH=/usr/local/mysql/bin:$PATH
source /etc/profile
