搭建Nginx图片服务器

搭建Nginx图片服务器

Part-I 安装Nginx

1. 安装PCRE
2. 下载 ngx_cache_purge 并解压，用来清除缓存
3. 下载Nginx并解压
4. cd nginx-1.7.7
5. 编译，--prefix使用默认值，则nginx安装在/usr/local/nginx

   ./configure    --user=www    --group=www    --add-module=../ngx_cache_purge-1.0 
       --with-http_stub_status_module    --with-http_ssl_module
   make && make install

Part-II 配置

vim /usr/local/nginx/conf/nginx.conf，并编辑如下：

user  www www;
worker_processes  8;

error_log  /data3/nginx/error.log  crit;
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

pid        /usr/local/nginx/nginx.pid;

events {
    use epoll;
    worker_connections  65535;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    charset utf-8;

    server_names_hash_bucket_size 128;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 32k;
    client_max_body_size 300m;

    sendfile on;
    tcp_nopush on;
    keepalive_timeout 60;
    tcp_nodelay on;

    client_body_buffer_size 512k;
    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;

    gzip on;
    gzip_min_length 1k;
    gzip_buffers 4 16k;
    gzip_http_version 1.1;
    gzip_comp_level 2;
    gzip_types text/plainapplication/x-javascript text/css application/xml;
    gzip_vary on;

# proxy_temp_path 和 proxy_cache_path 必须在同一分区
    proxy_temp_path /data0/proxy_temp_dir;
# 设置web缓存区名称为cahche_one，内存缓存空间大小为200M,1天没有被访问的内容自动清除硬盘缓存空间大小为300G
    proxy_cache_path /data0/proxy_cache_dir levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=30g;

#    upstream backend_server{
#        server 192.168.1.121:80 weight=1 max_fail=2 fail_timeout=30s;    
#        server 192.168.1.122:80 weight=1 max_fail=2 fail_timeout=30s;    
#        server 192.168.1.123:80 weight=1 max_fail=2 fail_timeout=30s;    
#    }

#以下为缓存服务器

    log_format cache '***$time_local 
'
                    '   $upstream_cache_status 
'
                    '   $remote_addr, $http_x_forwarded_for 
'
                    '   Cache-Control: $upstream_http_cache_control 
'
                    '   Expires: $upstream_http_expires 
'
                    '   "$request"($status) 
'
                    '   "$http_user_agent" 
';

    server {
        listen       80;
        server_name  192.168.1.120;

        location / {
            proxy_cache cache_one;
            # 对不同的HTTP状态码设置不同的缓存时间
            proxy_cache_valid 200 304 12h;
            #以域名、URI、参数组合成web服务器的key值，Ngnix根据key值哈希，存储缓存内容到二级缓存目录内
            proxy_cache_key  $host$uri$is_args$args;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $remote_addr;
            #此处跳转到真实图片服务器
            proxy_pass http://192.168.1.120:8080;

            access_log /data3/nginx/cache.log cache;

            expires 1d;
        }

        location ~ /purge(/.*){
            #设置只允许指定的ip或ip段才可以清除url缓存  
            #allow 127.0.0.1;
            #allow 192.168.0.0/16;
            #deny  all;
            proxy_cache_purge cache_one $host$1$is_args$args;
        }

#        #扩展名为.php、.jsp、.cig结尾的动态应用程序不缓存
#        location ~.*.(php|jsp|cgi)?$
#        {
#            proxy_set_header Host $host;
#            proxy_set_header X-Forwarded-For $remote_addr;
#            proxy_pass http://backend_server;
#        }

        access_log off;

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ .php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #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_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /.ht {
        #    deny  all;
        #}
    }

    #真实的图片服务器
    server{
        listen 8080;
        server_name localhost;
        location /{
            root /data0/images/;    
        }

        #访问日志，一般都off掉
        access_log /data3/nginx/access.log combined;
    }

    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

到此，Nginx图片服务区搭建完毕。 在/data0/images/下放入一张图片 200.jpg测试之 访问 http://192.168.1.120/200.jpg， cache_log记录如下：

***12/Nov/2014:16:15:26 +0800 
   MISS 
   192.168.1.19, - 
   Cache-Control: - 
   Expires: - 
   "GET /200.jpg HTTP/1.1"(200) 
   "Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0" 

***12/Nov/2014:16:15:38 +0800 
   HIT 
   192.168.1.19, - 
   Cache-Control: - 
   Expires: - 
   "GET /200.jpg HTTP/1.1"(200) 
   "Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0"

访问 http://192.168.1.120/purge/200.jpg 清除缓存