mysql5.7部署

一.环境准备

环境：centos-7.3 一台
软件版本：mysql-5.7.21
说明：使用二进制包进行初始化操作，并不进行make等编译操作。

1.安装依赖
yum -y install autoconf libaio bison ncurses-devel

2.创建用户
groupadd mysql
useradd -g mysql -s /sbin/nologin mysql

3.清理centos7 默认自带数据库
yum -y remove mariadb mariadb-server

二.部署

1.下载包
wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

tar -xf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz

移动过去，后面是存放路径
mv mysql-5.7.21-linux-glibc2.12-x86_64 /usr/local/mysql
mkdir /var/log/mysql
mkdir /usr/local/mysql/data

mysql即使root启动还是mysql用户运行的，所以要给权限
chown -R mysql:mysql /usr/local/mysql
chown -R mysql:mysql /var/log/mysql

2.进去删除所有行，添加新的
vim /etc/my.cnf

[client]
port = 3306 socket = /tmp/mysql.sock  [mysqld] character_set_server=utf8 init_connect='SET NAMES utf8' basedir=/usr/local/mysql datadir=/usr/local/mysql/data socket=/tmp/mysql.sock log-error=/var/log/mysqld.log pid-file=/usr/local/mysql/mysqld.pid

3.初始化
cd /usr/local/mysql/bin

初始化数据库，没有反应则正确
/usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --lc_messages_dir=/usr/local/mysql/share --lc_messages=en_US

4.加入systemctl
vim /usr/lib/systemd/system/mysql.service

[Unit]
Description=mysql
After=network.target remote-fs.target nss-lookup.target  [Service] Type=forking ExecStart=/usr/local/mysql/support-files/mysql.server start ExecReload=/usr/local/mysql/support-files/mysql.server restart ExecStop=/usr/local/mysql/support-files/mysql.server stop PrivateTmp=true  [Install] WantedBy=multi-user.target

5.设置环境变量
echo 'PATH=$PATH':/usr/local/mysql/bin >> /etc/profile
source /etc/profile

6.启动
systemctl daemon-reload
systemctl start mysql
systemctl enable mysql

7.查看密码
cat /var/log/mysqld.log
最后一行：root@localhost: 这里就是初始密码

需要进入数据库用如下命令修改密码才能让数据库正常使用
ALTER USER USER() IDENTIFIED BY ‘123456’;

一.环境准备

二.部署

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