Mysql 5.7.20二进制安装

下载包

wget http://downloads.mysql.com/archives/get/file/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz

解压包

tar xvf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz -C /usr/local/

创建mysql用户

useradd -r -s /sbin/nologin -M mysql

做软链接

ln -s /usr/local/mysql-5.7.20-linux-glibc2.12-x86_64/ /usr/local/mysql

授权

chown -R mysql:mysql /usr/local/mysql
mkdir -p /data/mysql/
chown -R mysql:mysql /data/mysql/

配置环境变量

vim /etc/profile
export PATH=$PATH:/usr/local/mysql/bin
source /etc/profile

初始化mysql

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

5.6版本初始化mysql

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

编辑mysql配置文件

vim /etc/my.cnf

[mysqld]
user=mysql
basedir=/usr/local/mysql
datadir=/data/mysql
server_id=6
port=3306
socket=/tmp/mysql.sock
[mysql]
socket=/tmp/mysql.sock

编辑mysql启动文件

vim /etc/systemd/system/mysqld.service

[Unit]
Description=MySQL Server
Documentation=man:mysqld(8)
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf
LimitNOFILE = 5000

启动mysql

systemctl start mysqld
systemctl status mysqld

配置mysql密码

mysqladmin -uroot -p password 123456