shared memory zone "media" conflicts with already declared size 0

[Igor Sysoev]

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/