On Mon, Sep 28, 2009 at 06:15:50PM +0200, Tomasz Pajor wrote:

> 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.

> my configuration below
>
> # nginx.conf
> user nobody nogroup;
> worker_processes 5;
> error_log /var/log/nginx/error.log;
> pid /var/run/nginx/nginx.pid;
> worker_rlimit_nofile 8192;
>
> events {
> use epoll;
> worker_connections 4096;
> }
>
> http {
> include base/std;
> include base/log_format;
> include base/gzip;
> include base/proxy_conf_real_ip;
>
> include /etc/nginx/conf.d/*.conf;
> }
>
> # base/std
> include base/mime.types;
> default_type application/octet-stream;
>
> sendfile on;
>
> tcp_nopush on;
> tcp_nodelay off;
>
> # base/log_format
> log_format main '$remote_addr - $remote_user [$time_local] '
> '"$request" $status $body_bytes_sent "$http_referer" '
> '"$http_user_agent" "$http_x_forwarded_for"';
>
> # base/gzip
> gzip on;
> gzip_http_version 1.0;
> gzip_comp_level 2;
> gzip_proxied any;
> gzip_types text/plain text/css application/x-javascript text/xml
> application/xml application/xml+rss text/javascript;
>
> # base/proxy_conf_real_ip
> include base/proxy_conf
> proxy_set_header X-Real-IP $http_x_real_ip;
>
> # base/proxy_conf
> proxy_set_header Host $host;
> proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
> client_max_body_size 10m;
> client_body_buffer_size 128k;
> proxy_connect_timeout 90;
> proxy_send_timeout 90;
> proxy_read_timeout 90;
> proxy_buffers 32 4k;
>
> # conf.d/cache.conf
> client_body_temp_path /mnt/client_temp;
> proxy_temp_path /mnt/proxy_temp;
> fastcgi_temp_path /mnt/fastcgi_temp;
>
> proxy_cache_path /mnt/media levels=1:2 keys_zone=media:50m max_size=5000m;
>
> server {
> listen 80;
>
> location / {
> proxy_pass http://media.server:8080;
> include extra/cache;
> }
> }
>
> # conf.d/ssl.conf
> server {
> listen 443;
>
> ssl on;
> ssl_certificate ssl/ssl.crt;
> ssl_certificate_key ssl/ssl.key;
>
> ssl_session_timeout 5m;
> ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
>
> location / {
> proxy_pass https://media.server:4430;
> include extra/cache;
> }
> }
>
> # extra/cache
> proxy_cache media;
> proxy_cache_key $request_uri;
> proxy_cache_valid 200 28d;
> proxy_cache_valid 404 1m;
> proxy_cache_valid 500 2m;
> proxy_cache_use_stale error timeout invalid_header http_500 http_502
> http_503 http_504;
> proxy_ignore_headers Expires Cache-Control;
> FileETag on;
> expires max;

--
Igor Sysoev
http://sysoev.ru/en/