121 lines
2.4 KiB
Markdown
121 lines
2.4 KiB
Markdown
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# Mysql 安装
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系统环境：Centos7
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## 安装配置
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通过 rpm 包安装
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centos 的 yum 源中默认是没有 mysql 的，所以我们需要先去官网下载 mysql 的 repo 源并安装。
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### 安装 mysql yum 源
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官方下载地址：https://dev.mysql.com/downloads/repo/yum/
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（1）下载 yum 源
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```sh
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$ wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm
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```
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（2）安装 yum repo 文件并更新 yum 缓存
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```sh
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$ rpm -ivh mysql80-community-release-el7-1.noarch.rpm
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```
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执行结果：
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会在 /etc/yum.repos.d/ 目录下生成两个 repo 文件
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```sh
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ls | grep mysql
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mysql-community.repo
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mysql-community-source.repo
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```
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更新 yum：
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```
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yum clean all
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yum makecache
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```
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（3）查看 rpm 安装状态
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```sh
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$ yum repolist enabled | grep mysql.*
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mysql-connectors-community/x86_64 MySQL Connectors Community 65
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mysql-tools-community/x86_64 MySQL Tools Community 69
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mysql80-community/x86_64 MySQL 8.0 Community Server 33
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```
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### 安装 mysql 服务器
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```sh
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$ yum install mysql-community-server
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```
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### 启动 mysql 服务
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```sh
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# 启动 mysql 服务
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$ systemctl start mysqld.service
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# 查看运行状态
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$ systemctl status mysqld.service
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# 开机启动
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$ systemctl enable mysqld
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$ systemctl daemon-reload
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```
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### 初始化数据库密码
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查看一下初始密码
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```sh
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$ grep "password" /var/log/mysqld.log
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2018-09-30T03:13:41.727736Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: %:lt+srWu4k1
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```
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执行命令：
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```sh
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mysql -uroot -p
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```
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输入临时密码，进入 mysql
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```sh
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ALTER user 'root'@'localhost' IDENTIFIED BY 'Tw#123456';
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```
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注：密码强度默认为中等，大小写字母、数字、特殊符号，只有修改成功后才能修改配置再设置更简单的密码
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### 配置远程访问
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```
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GRANT ALL ON *.* TO 'root'@'localhost';
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FLUSH PRIVILEGES;
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```
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### 跳过登录认证
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```
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vim /etc/my.cnf
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```
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在 [mysqld] 下面加上 skip-grant-tables
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作用是登录时跳过登录认证，换句话说就是 root 什么密码都可以登录进去。
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执行 `service mysqld restart`，重启 mysql
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## 参考资料
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https://www.cnblogs.com/xiaopotian/p/8196464.html
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https://www.cnblogs.com/bigbrotherer/p/7241845.html
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https://blog.csdn.net/managementandjava/article/details/80039650
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http://www.manongjc.com/article/6996.html
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https://www.cnblogs.com/xyabk/p/8967990.html
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