Ubuntu安装MySQL的步骤是什么

准备工作

在安装MySQL之前，我们需要先确保系统已经安装了一些必要的软件包，打开终端，输入以下命令：

sudo apt-get update
sudo apt-get upgrade

这两个命令分别用于更新软件包列表和升级已安装的软件包，接下来，我们还需要安装一些额外的软件包，以便在安装MySQL时使用，输入以下命令：

sudo apt-get install libaio1

下载MySQL安装包

在安装MySQL之前，我们需要从官方网站下载对应的安装包，访问MySQL官方网站(https://dev.mysql.com/downloads/mysql/),选择适合你的Ubuntu系统的版本进行下载，下载完成后，将安装包上传到你的Ubuntu服务器上。

安装MySQL

1、解压安装包

在终端中，进入到安装包所在的目录，然后使用以下命令解压安装包：

tar -xvf mysql-VERSION.deb

请将VERSION替换为你下载的MySQL安装包的实际版本号，解压完成后，你会看到一个名为mysql-VERSION的文件夹。

2、安装MySQL服务器

进入解压后的文件夹，然后运行以下命令开始安装MySQL服务器：

cd mysql-VERSION
sudo dpkg -i linux-headers-VERSION-amd64.deb
sudo dpkg -i libaio1_VERSION.deb
sudo apt-get install --fix-broken install mysql-server

请将VERSION替换为你下载的MySQL安装包的实际版本号，这个过程可能需要一些时间，请耐心等待。

3、配置MySQL安全选项

在安装完成后，MySQL会自动启动并进入安全模式，为了提高安全性，我们需要对MySQL进行一些配置，停止MySQL服务：

sudo systemctl stop mysql.service

跳过安全检查步骤：

sudo mysqld_safe --skip-grant-tables &

接下来，登录到MySQL:

mysql -u root -p

输入你设置的root用户密码，登录成功后，运行以下命令跳过权限检查：

FLUSH PRIVILEGES;
ALTER USER 'root'@'localhost' IDENTIFIED BY 'your_new_password'; -将your_new_password替换为你自己的新密码

退出MySQL并重启服务：

exit;
sudo systemctl start mysql.service

至此，MySQL已经在你的Ubuntu系统上安装完成，你可以尝试连接到MySQL服务器，如果一切正常，你应该会看到类似以下的输出：

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is XXXXXXXXXX and your MySQL server version is X.X.X + MySQL Community Server (GPL) %s (%s).  Type 'help;' or '\h' for help.  Type '\c' to clear the current input statement.  ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................**********************************************************************" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" %s " %s" .............................................................................................................................................___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________