Rewritemap in nginx

[Klaas Naaijkens]

Yes, it got to 99% CPU before and it kept there for some time.

With map_hash_bucket_size 1024 it works fine now. I had increased
bucket_size before but I hadn't realized I had to keep doubling it.

Thank you for your help.

On Fri, Oct 3, 2008 at 10:45 PM, Igor Sysoev <is at rambler-co.ru> wrote:
> On Fri, Oct 03, 2008 at 08:52:48PM +0200, Klaas Naaijkens wrote:
>
>> I am trying to implement the RewriteMap funcionality I am using
>> extensively in apache in some way with nginx.
>>
>> In apache we use a dbm database where we store legacy urls (around
>> 100.000) that we redirect to their new urls.
>>
>> We have
>> RewriteMap oldlinks dbm:/etc/apache2/oldlinks.dbm
>> RewriteCond %{REQUEST_URI}                  \.php$
>>                  [NC]
>> RewriteCond %{HTTP_HOST}                    ^(www)?([^.]+)\.
>>                 [NC]
>> RewriteCond ${lowercase:%2}$1               ^(.*)$
>> RewriteCond ${oldlinks:%1|NONE}             ^(http://.*)$
>> RewriteRule ^(.*php)$                       %1
>>                  [NC,R=301,L]
>>
>> Now I am trying to reimplement this functionality in the nginx. I have
>> tried to create a text file with my mappings and use
>> NginxHttpMapModule but so far without success.
>>
>> I get these messages
>> Starting nginx: 2008/10/03 20:31:58 [emerg] 22017#0: could not build
>> the map_hash, you should increase either map_hash_max_size: 102400 or
>> map_hash_bucket_size: 128
>> I can keep increase the sizes but at a certain point nginx doesn't
>> even start up any more.
>
> It seems that nginx starts, but run too long. What does top show at start ?
>
> You may try
>
> http {
>    map_hash_bucket_size  1024;
>    map_hash_max_size     102400;
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>