说明：
1）目前在一台服务器上安装了2个nginx
2）现在需要在nginx2上增加剪裁跟缓存模块
3）增加模块为ngx_cache_purge-2.3与http_image_filter_module
1、使用/usr/local/nginx2/sbin/nginx -V
目前nginx模块如下：
configure arguments:
--prefix=/usr/local/nginx2
--user=www --group=www
--with-http_ssl_module
--with-http_flv_module
--with-http_v2_module
--with-http_mp4_module
--with-http_realip_module
--with-http_stub_status_module
--with-http_gzip_static_module
--add-module=/usr/local/fastdfs/fastdfs-nginx-module-master/src
--http-client-body-temp-path=/data/nginx/tmp/nginx/client
--http-proxy-temp-path=/data/nginx/tmp/nginx/proxy
--http-fastcgi-temp-path=/data/nginx/tmp/nginx/fcgi
--http-uwsgi-temp-path=/data/nginx/tmp/nginx/uwsgi
--http-scgi-temp-path=/data/nginx/tmp/nginx/scgi
--with-pcre
2、上传测试图片test1.jpg验证目前fast是否正常
fdfs_test /etc/fdfs/client.conf upload test1.jpg
example file url: http://IP:8080/G1/M00/00/0F/rBLaWF6ejQCAO0g2AAALHOyHsy4754_big.jpg
浏览器验证访问是否正常
http://IP:9989/G1/M00/00/0F/rBLaWF6ejQCAO0g2AAALHOyHsy4754_big.jpg
3、上传ngx_cache_purge-2.3到/usr/local/fastdfs/
解压
unzip ngx_cache_purge-2.3
4、上传nginx-1.10.0.tar.gz到/usr/local/fastdfs/
解压
tar -zxvf nginx-1.10.0.tar.gz -C /usr/local/nginx2
5、编译
cd /usr/local/nginx2/nginx-1.10.0/
安装需要依赖包
yum -y install gd-devel
需要重新编译的模块
./configure
--prefix=/usr/local/nginx2
--user=www
--group=www
--with-http_sub_module
--with-http_ssl_module
--with-http_flv_module
--with-http_mp4_module
--with-threads
--with-http_realip_module
--with-http_stub_status_module
--with-http_gzip_static_module
--with-http_image_filter_module
--add-module=/usr/local/fastdfs/fastdfs-nginx-module-master/src
--add-module=/usr/local/fastdfs/ngx_cache_purge-2.3
--http-client-body-temp-path=/data/nginx/tmp/nginx/client
--http-proxy-temp-path=/data/nginx/tmp/nginx/proxy
--http-fastcgi-temp-path=/data/nginx/tmp/nginx/fcgi
--http-uwsgi-temp-path=/data/nginx/tmp/nginx/uwsgi
--http-scgi-temp-path=/data/nginx/tmp/nginx/scgi
--with-pcre
正常返回信息：
nginx path prefix: "/usr/local/nginx2"
nginx binary file: "/usr/local/nginx2/sbin/nginx"
nginx modules path: "/usr/local/nginx2/modules"
nginx configuration prefix: "/usr/local/nginx2/conf"
nginx configuration file: "/usr/local/nginx2/conf/nginx.conf"
nginx pid file: "/usr/local/nginx2/logs/nginx.pid"
nginx error log file: "/usr/local/nginx2/logs/error.log"
nginx http access log file: "/usr/local/nginx2/logs/access.log"
nginx http client request body temporary files: "/data/nginx/tmp/nginx/client"
nginx http proxy temporary files: "/data/nginx/tmp/nginx/proxy"
nginx http fastcgi temporary files: "/data/nginx/tmp/nginx/fcgi"
nginx http uwsgi temporary files: "/data/nginx/tmp/nginx/uwsgi"
nginx http scgi temporary files: "/data/nginx/tmp/nginx/scgi"
make
6、停止nginx2
/usr/local/nginx2/sbin/nginx -s stop
7、备份原来nginx
mv /usr/local/nginx2/sbin/nginx /usr/local/nginx2/sbin/nginx.bak
8、复制新编译的nginx到nginx2/sbin
cp /usr/local/nginx2/nginx-1.10.0/objs/nginx /usr/local/nginx2/sbin/
9、启动nginx
/usr/local/nginx2/sbin/nginx
（假如启动不起来的话指定配置文件启动/usr/local/nginx2/sbin/nginx -c /usr/local/nginx2/conf/nginx.conf）
10、nginx加入配置
cd /usr/local/nginx2/conf/
备份原来ngin.conf
cp nginx.conf nginx.conf.bak20200421
假如如下配置
vim nginx.conf
#缓存
proxy_connect_timeout 5;
proxy_read_timeout 60;
proxy_send_timeout 5;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
proxy_temp_path /home/temp_dir;
proxy_cache_path /home/cache levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=30g;
location ~/s([0-9]+)x([0-9]+)fdfs/G[0-9]/(.+).(jpeg|Jpeg|jpg|gif|png) {
#缓存
proxy_cache cache_one;
proxy_cache_valid 200 302 1h;
proxy_cache_valid 301 1d;
proxy_cache_valid any 1m;
expires 30d;
#剪裁
set $w $1;
set $h $2;
if ($w != "0") {
rewrite /s([0-9]+)x([0-9]+)fdfs/G1/(.+).(jpeg|Jpeg|jpg|gif|png)$ /G1/$3.$4 break;
}
image_filter resize $w $h;
image_filter_buffer 20M;
ngx_fastdfs_module;
proxy_next_upstream http_502 http_504 http_404 error timeout invalid_header;
proxy_cache_valid 200 304 12h;
}
11、检查启动nginx配置
./../sbin/nginx -t
./../sbin/nginx -s reload
12、浏览器原地址访问
http://IP:9989/G1/M00/00/0F/rBLaWF6ejQCAO0g2AAALHOyHsy4754_big.jpg
13、浏览器加入剪裁功能访问
http://IP:9989/s200x200fdfs/G1/M00/00/0F/rBLaWF6ejQCAO0g2AAALHOyHsy4754_big.jpg