安装nginx
[root@proxy ~]# tar -xf nginx-1.24.0.tar.gz
[root@proxy ~]# cd nginx-1.24.0/
[root@proxy nginx-1.24.0]# ./configure --prefix=/usr/local/nginx --with-http_ssl_module
[root@proxy nginx-1.24.0]# make && make install
[root@proxy nginx-1.24.0]# ls /usr/local/nginx/
conf html logs sbin安装MySQL
[root@proxy ~]# yum -y install mysql mysql-server安装php
[root@proxy ~]# yum -y install php php-fpm php-mysqlnd启动服务
[root@proxy ~]# /usr/local/nginx/sbin/nginx
[root@proxy ~]# ss -ntulp | grep 80
tcp LISTEN 0 128 0.0.0.0:80 0.0.0.0:* users:(("nginx",pid=8309,fd=6),("nginx",pid=8308,fd=6))
[root@proxy ~]# systemctl enable mysqld --now
[root@proxy ~]# ss -ntulp | grep 3306
tcp LISTEN 0 128 *:3306 *:* users:(("mysqld",pid=8443,fd=25))
[root@proxy ~]# systemctl enable php-fpm.service --nowFastCGI
一、FastCGI工作原理
二、工作流程
Web Server启动时载入FastCGI进程管理器
FastCGI进程管理器初始化，启动多个解释器进程
当客户端请求达到Web Server时，FastCGI进程管理器选择连接到一个解释器
FastCGI子进程完成处理后返回结果，将标准输出和错误信息从同一连接返回Web Server
三、FastCGI缺点
内存消耗大
因为是多进程，所以进程消耗更多的服务器内存，PHP-CGI解释器每进程消耗7至25兆内存，将这个数字乘以50或100就是很大的内存数
Nginx+PHP（FastCGI）服务器在3万并发连接下
- 开10个Nginx进程消耗150M内存（10*15M）
- 开64个php-cgi进程消耗1280M内存（20M*64）
四、配置FastCGI
php-fpm的配置文件可定义两种连接方式
[root@proxy ~]# vim /etc/php-fpm.d/www.conf
[www]
listen = /run/php-fpm/www.sock
或
listen = 127.0.0.1:9000LNMP安装
一、php-fpm配置文件
[root@proxy ~]# vim /etc/php-fpm.d/www.conf
;listen = /run/php-fpm/www.sock # 注释该行
listen = 127.0.0.1:9000 # php-fpm端口号（使用网络通信）
pm.max_children = 50 # 最大进程数量
pm.start_servers = 5 # 最小进程数量
[root@proxy ~]# systemctl restart php-fpm.service二、修改nginx配置文件
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
location ~ \.php$ { # ~是使用正则表达式，匹配以.php结尾
root html;
fastcgi_pass 127.0.0.1:9000; # 将请求转发给本机9000端口
fastcgi_index index.php;
#fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
include fastcgi.conf;
} location ~ \.php$ {
root html;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
#fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
include fastcgi.conf; # 加载fastcgi配置文件
}
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reloadNginx的默认访问日志文件为 /usr/local/nginx/logs/access.log
Nginx的默认错误日志文件为 /usr/local/nginx/logs/error.log
PHP默认错误日志文件为 /var/log/php-fpm/error.log
三、使用socket方式连接php-fpm
[root@proxy ~]# vim /etc/php-fpm.d/www.conf
listen = /run/php-fpm/www.sock
;listen = 127.0.0.1:9000
listen.acl_users = apache,nginx,nobody
[root@proxy ~]# systemctl restart php-fpm.service
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
location ~ \.php$ {
root html;
#fastcgi_pass 127.0.0.1:9000;
fastcgi_pass unix:/run/php-fpm/www.sock;
fastcgi_index index.php;
#fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
include fastcgi.conf;
}
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload地址重写
一、什么是地址重写
获得一个来访的URL请求，然后改写成服务器可以处理的另一个URL的过程
二、地址重写的好处
缩短URL，隐藏实际路径提高安全性
易于用户记忆和键入
易于被搜索引擎收录
三、rewrite语法
rewrite基本语句
rewrite regex replacement flag
if（条件） {...}
四、应用案例
a.html --> b.html
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
server {
listen 80;
server_name localhost;
rewrite ^/a\.html$ /b.html redirect;
.. ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload浏览器访问，地址栏同时发生变化
192.168.88.5/a.html
访问192.168.99.5/下面子页面，重定向至www.baidu.com/下相同的子页面
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
server {
listen 80;
server_name localhost;
rewrite /(.*) https://baidu.com/$1;
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload实现不同浏览器跳转到不同页面
[root@proxy ~]# mkdir /usr/local/nginx/html/firefox
[root@proxy ~]# echo firefox > /usr/local/nginx/html/firefox/abc.html
[root@proxy ~]# echo other > /usr/local/nginx/html/abc.html
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
if ($http_user_agent ~* firefox) {
rewrite (.*) /firefox/$1;
}
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload分别用火狐浏览器与其他浏览器访问相同地址http://192.168.99.5/abc.html，可以得到不同结果
五、地址重写的选项
redirect 临时重定向，状态码302,爬虫不更新URI
permanent 永久重定向，状态码301,爬虫更新URl
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
server {
listen 80;
server_name localhost;
rewrite /a.html /b.html permanent;
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload
[root@proxy ~]# curl 192.168.88.5/a.html
<html>
<head><title>301 Moved Permanently</title></head>
<body>
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx/1.24.0</center>
</body>
</html>last 不再读其它语句，但还会继续匹配其它location语句
break 不再读其它语句，结束请求
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
server {
listen 80;
server_name localhost;
rewrite /a.html /b.html;
rewrite /b.html /c.html;
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload
[root@proxy ~]# echo nginx-c~~~ > /usr/local/nginx/html/c.html
[root@proxy ~]# curl 192.168.88.5/a.html
nginx-c~~~
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
server {
listen 80;
server_name localhost;
rewrite /a.html /b.html last;
rewrite /b.html /c.html;
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload
[root@proxy ~]# curl 192.168.88.5/a.html
ngixn-b~~~
[root@proxy ~]# curl 192.168.88.5/b.html
nginx-c~~~
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
location / {
rewrite /a.html /b.html last;
root html;
index index.html index.htm;
}
location /b.html {
rewrite /b.html /c.html;
}
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload
[root@proxy ~]# curl 192.168.88.5/a.html
nginx-c~~~
[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
... ...
location / {
rewrite /a.html /b.html break;
root html;
index index.html index.htm;
}
location /b.html {
rewrite /b.html /c.html;
}
... ...
[root@proxy ~]# /usr/local/nginx/sbin/nginx -s reload
[root@proxy ~]# curl 192.168.88.5/a.html
ngixn-b~~~
[root@proxy ~]# curl 192.168.88.5/b.html
nginx-c~~~