90 lines
1.7 KiB
Markdown
90 lines
1.7 KiB
Markdown
# 安装 Mysql
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### 脚本描述
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```
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centos8 使用 yum 安装 MySQL8.0 并启动
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```
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### 脚本内容
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[mysql80-yum-install.sh](mysql80-yum-install.sh)
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```shell
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#!/bin/bash
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# '\033[字背景颜色;字体颜色m字符串\033[0m'
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GREENCOLOR='\033[1;32m'
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NC='\033[0m'
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DOWNLOAD_DIR="/usr/src"
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SOURCE_DIR="http://repo.mysql.com/mysql80-community-release-el8-3.noarch.rpm"
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echo "===================================================="
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printf "${GREENCOLOR} MySQL's install begin ${NC} \n"
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echo "===================================================="
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# 安装 MySQL
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# 如果安装过 MySQL, 先卸载
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yum -y remove mysql
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# 进入目录
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cd $DOWNLOAD_DIR
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# 下载 MySQL 包
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wget $SOURCE_DIR
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# 安装 MySQL 的 yum 源
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rpm -ivh mysql80-community-release-el8-3.noarch.rpm
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# 安装 MySQL
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yum -y install mysql-server
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# 启动 MySQL
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systemctl start mysqld
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systemctl status mysqld
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echo "===================================================="
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printf "${GREENCOLOR} MySQL's install finish ${NC} \n"
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cat /var/log/mysqld.log | grep 'temporary password'
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echo "===================================================="
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```
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### 执行
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```shell
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bash mysql80-yum-install.sh
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```
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### 如何修改 root 密码？
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1、首先查看初始化的密码。
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```sh
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# 查看初始密码
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cat /var/log/mysql/mysqld.log
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```
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2、用初始密码登录 MySQL，然后修改 root 的密码。
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```sql
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ALTER user 'root'@'localhost' IDENTIFIED BY 'duiying*D123';
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```
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3、刷新权限。
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```sql
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FLUSH PRIVILEGES;
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```
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4、允许其他主机连接 MySQL。
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```sql
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use mysql;
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update user set host = '%' where user = 'root';
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FLUSH PRIVILEGES;
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```
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### 如何设置 MySQL 开机自启动？
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```sh
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# 编辑文件
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vim /etc/rc.log
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# 在尾部新增下面这行
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service mysqld start
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``` |