21 messages in ru.sysoev.nginxRe: Switching backends based on a cookie| From | Sent On | Attachments |
|---|---|---|
| saltyflorida | Jan 28, 2010 3:42 pm | |
| Marcus Clyne | Jan 28, 2010 4:03 pm | |
| merlin corey | Jan 28, 2010 4:23 pm | |
| merlin corey | Jan 28, 2010 4:25 pm | |
| Marcus Clyne | Jan 28, 2010 4:48 pm | |
| saltyflorida | Jan 28, 2010 5:50 pm | |
| saltyflorida | Jan 28, 2010 6:00 pm | |
| Piotr Sikora | Jan 28, 2010 6:06 pm | |
| Piotr Sikora | Jan 28, 2010 6:14 pm | |
| saltyflorida | Jan 28, 2010 6:18 pm | |
| saltyflorida | Jan 28, 2010 6:19 pm | |
| Marcus Clyne | Jan 28, 2010 6:49 pm | |
| saltyflorida | Jan 28, 2010 11:04 pm | |
| saltyflorida | Jan 28, 2010 11:13 pm | |
| Marcus Clyne | Jan 29, 2010 2:54 am | |
| merlin corey | Jan 29, 2010 9:38 am | |
| Laurence Rowe | Jan 29, 2010 11:19 am | |
| Marcus Clyne | Jan 29, 2010 3:01 pm | |
| Laurence Rowe | Jan 30, 2010 10:46 am | |
| Marcus Clyne | Jan 30, 2010 4:00 pm | |
| saltyflorida | Feb 2, 2010 9:30 pm |
| Subject: | Re: Switching backends based on a cookie | |
|---|---|---|
| From: | saltyflorida (ngin...@nginx.us) | |
| Date: | Jan 28, 2010 5:50:45 pm | |
| List: | ru.sysoev.nginx | |
Eugaia Wrote:
-------------------------------------------------------
Hi,
saltyflorida wrote:
Is it possible to switch backend clusters of servers based on a cookie?
I would like to set a cookie named "env" and do something like this:
if ($http_cookie ~* "env=testing(;|$)") { proxy_pass http://backend_testing; } if ($http_cookie ~* "env=staging(;|$)") { proxy_pass http://backend_staging; } if ($http_cookie ~* "env=production(;|$)") { proxy_pass http://backend_production; }
However the "proxy_pass" directive is not
allowed inside an "if". Is there another way I can approach this?
Take a look at the map module :
http://wiki.nginx.org/NginxHttpMapModule
One possibility would be :
http {
map $cookie_env $backend {
testing http://backend_testing; staging http://backend_staging; production http://backend_production; }
server { ... proxy_pass $backend;
}
}
Marcus.
_______________________________________________ nginx mailing list ngi...@nginx.org http://nginx.org/mailman/listinfo/nginx
Marcus, thank you for your response. The map module is very useful. I implemented your suggestion and am now able to switch backend servers using the cookie.
Now I have another problem: the cache is storing pages generated by the 3 different backend clusters. Is there a way I can bypass the cache if the cookie is set to either "testing" or "staging"?
Here is my simplified config: http { upstream backend_testing { ip_hash; server ... } upstream backend_staging { ip_hash; server ... } upstream backend_production { ip_hash; server ... } proxy_cache_path /mnt/nginx_cache levels=1:2 keys_zone=one:100m inactive=7d max_size=10g; proxy_temp_path /var/www/nginx_temp;
map $cookie_uslnn_env $mybackend { default http://backend_production; testing http://backend_testing; staging http://backend_staging; production http://backend_production; }
server {
location / {
proxy_pass $mybackend;
proxy_cache one;
proxy_cache_key $my_cache_key;
proxy_cache_valid 200 302 304 10m;
proxy_cache_valid 301 1h;
proxy_cache_valid any 1m;
proxy_cache_use_stale updating error timeout invalid_header http_500
http_502 http_503 http_504;
}
location /wp-admin {
proxy_pass $mybackend;
proxy_read_timeout 300;
}
}
}
Thanks, Eliot
Posted at Nginx Forum: http://forum.nginx.org/read.php?2,46979,47024#msg-47024
_______________________________________________ nginx mailing list ngi...@nginx.org http://nginx.org/mailman/listinfo/nginx