nginx

nginx:
修改: src/core/nginx.h
#define nginx_version         8054
#define NGINX_VERSION      "0.8.54"
#define NGINX_VER          "nginx/" NGINX_VERSION
#define NGINX_VAR          "NGINX"
为想要显示的信息

cache_purge ：


./configure --prefix=/data/soft/nginx/ \
--user=nobody \
--group=nobody \
--with-http_flv_module \
--with-http_sub_module \
--with-http_stub_status_module \
--with-http_gzip_static_module\
 --without-http_auth_basic_module \
--without-http_scgi_module \
--without-http_uwsgi_module \
--add-module=../ngx_cache_purge-1.2/
将以上的configure保存以备以后升级时使用.




nginx.conf:

user  nobody nobody;
worker_processes  4;
worker_rlimit_nofile 30000;
log_not_found off;

#our own experience worker_processes value is recommended to
#be set to the number of cores your server has

worker_processes     4;
#worker_cpu_affinity 0001 0010 0100 1000;

#Bind the first worker to CPU0 , second to CPU1 ,thired to CPU2,forth to CPU3

#error_log file [ debug | info | notice | warn | error | crit ]
#   1.  in the main section - error
#   2. in the HTTP section - crit
#   3. in the server section - crit

#pid        logs/nginx.pid;


events {
#The worker_connections and worker_proceses from the main section
#allows you to calculate maxclients value:
#max_clients = worker_processes * worker_connections
#In a reverse proxy situation, max_clients becomes
#max_clients = worker_processes * worker_connections/4
#Since a browser opens 2 connections by default to a server and
#nginx uses the fds (file descriptors)
#from the same pool to connect to the upstream backend

    worker_connections  4096;
    #use [ kqueue | rtsig | epoll | /dev/poll | select | poll ] ;
    #used [epoll] on Linux 2.6+
    use epoll;
}


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

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    tcp_nopush     on;
    tcp_nodelay    on;

    #keepalive_timeout  0;
    keepalive_timeout  20;
    keepalive_requests 1000;
    server_tokens    off;

    #gzip  on;
    include vhosts/*.conf;

}


vhosts/
server {
        listen                  80;
        #use "default" parameter to directive this is default when using
        #name based virtual hosts.
#        listen                  88   default;
        server_name             x.x.com;
        charset                 utf-8;
        gzip                    on;
        gzip_types              text/html text/css;
        gzip_comp_level                 3;
        gzip_min_length                    10000;
#        gzip_disable     "MSIE [1-6]\.";
        location ~* \.(?:ico|css|js|gif|jpe?g|png)$ {
                 access_log   off;
                 expires      30d;
                 }


        root                    /xxx/xx/;
        access_log              off;
        log_not_found           off;

        location / {
                index           index.html index.htm index.php;
                }
        error_page              500 502 503 504 /50x.html;
        location = /50x.html {
                root            html;
                }

        include access.conf;
        location ~ \.php$ {
                #add to fastcgi_params,below the "fastcgi_param  SCRIPT_NAME" line.
                #fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
                fastcgi_index   index.php;
                include         fastcgi_params;
                fastcgi_pass unix:/tmp/php5-fpm.sock;
                }
       location /nginx_status {
               stub_status on;
               access_log   off;
               allow x.x.x.x;
               deny all;
               }

}



access.conf:
        location /xxxx/ {
                allow x.x.x.x;
                allow x.x.x.x;
                allow x.x.x.x;
                deny all;
                }


关于cache:
http {
    proxy_cache_path /tmp/cache levels=1:1:1 keys_zone=tmpcache:10m inactive=10m max_size=1G;
    upstream backend_group {
            server backend1.example.com weight=5;
            server backend2.example.com:8080;
            server unix:/tmp/backend3;
            }


    server {
          location / {
                proxy_pass
                proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504
                proxy_cache        tmpcache;
                proxy_cache_valid 200 204 304 12h;
                proxy_cache_valid 301 302 10m;
                proxy_cache_valid any 1m;
                proxy_cache_key $uri$is_args$args;
#                proxy_cache_key $host$uri$is_args$args;
#                proxy_set_header  Host $host;
                proxy_set_header  X-Real-IP  $remote_addr;
                proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Forwarded-For $remote_addr;
                proxy_set_header Accept-Encoding "";
                expires 12h;
                }

        location ~ .*\.(php|jsp|cgi)?$  {
                 proxy_set_header  Host $host;
                 proxy_set_header X-Forwarded-For $remote_addr;
                 proxy_pass
                 }   
        location ~ /purge(/.*) {
                allow 127.0.0.1;
                deny all;
                proxy_cache_purge tmpcache $1$is_args$args;
                }
        }
}

假设一个URL为，通过访问

注意配置段中的区域包含关系.
proxy_cache_patch 要在proxy_cache前已经定义.

>>>> what seems to be the problem?
>>>>
>>>> [emerg]: the size 52428800 of shared memory zone "media" conflicts with
>>>> already declared size 0 in /etc/nginx/conf.d/cache.conf:5
>>>> configuration file /etc/nginx/nginx.conf test failed
>>>>
>>>>
>>> This may be caused if "proxy_cache media" is included before proxy_cache_path.
>>>
>>>

nginx升级:
./configure xxxxxxxxx
make
生成objs/nginx可执行文件
NEW_NGINX=`pwd` ; cd /data/soft/nginx/sbin/; mv nginx nginx.old ;
cp ${NEW_NGINX}/objs/nginx /data/soft/nginx/sbin/
/data/soft/nginx//sbin/nginx -t
kill -USR2 `cat /data/soft/nginx//logs/nginx.pid`
sleep 1
test -f /data/soft/nginx//logs/nginx.pid.oldbin
kill -QUIT `cat /data/soft/nginx//logs/nginx.pid.oldbin`
版本回退:
mv nginx nginx.new ; mv nginx.old nginx
/data/soft/nginx//sbin/nginx -t
kill -HUP `cat /usr/local/nginx/nginx.pid`