Ubuntu通过apt-get安装LNMP环境

因为CentOS的gcc版本太低，升级新版本的gcc太麻烦，懒得升级了，所以直接换了Ubuntu。以前都用LNMP一键安装脚本，这次，打算练练手，就打算用apt-get手动安装（不要问我为什么不编译安装，因为太慢了..上一次编译了一天）

1.安装MySQL

直接运行以下命令即可安装

 apt-get install mysql-server 

输入以下命令配置

 mysql_secure_installation 

我的设置我贴出来，如下

#1
VALIDATE PASSWORD PLUGIN can be used to test passwords...
Press y|Y for Yes, any other key for No: N (我的选项)

#2
Please set the password for root here...
New password: (输入密码)
Re-enter new password: (重复输入)

#3
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them...
Remove anonymous users? (Press y|Y for Yes, any other key for No) : N (我的选项)

#4
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network...
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Y (我的选项)

#5
By default, MySQL comes with a database named 'test' that
anyone can access...
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : N (我的选项)

#6
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y (我的选项)

2.安装Nginx

输入以下命令安装最新版的Nginx

  sudo apt-get install nginx 

3.安装php和php常用扩展

输入以下命令安装php7.3

 sudo apt-get install php7.3-fpm php7.3-cli php7.3-cgi php7.3-mysql 

4.修改配置文件

 sudo nano /etc/nginx/sites-enabled/default 

取消注释掉以下部分，注意：不要同时取消注释两个fastcgi_pass，否则会报错

输入以下命令启动Web环境

nginx sudo /etc/init.d/nginx restart
php sudo /etc/init.d/php start

5.完成！

在/var/www/html/下创建php文件，并且在里面输入

如果不出所料的话，打开你的IP即可看到phpinfo

6.一些问题

1.MySQL

我在用phpMyAdmin时候出现无法登陆错误，报错(HY000/1698):Access denied for user ‘root’@’localhost’

我也不清楚为什么会出现这个错误，于是我网上查了一下，把网上的内容贴出来

sudo mysql -u root -p #登陆MySQL
use mysql;
UPDATE user SET plugin='mysql_native_password' WHERE User='root';
FLUSH PRIVILEGES;
exit;

然后，密码会清空，再次输入 mysql_secure_installation 配置一下密码就可以正常用MySQL登陆了