Re: post_action crash

["Alexey Kovyrin" <alexey@xxxxxxxxxxx>]

0.6.34 - то же самое все.

ngx_http_finalize_request (r=0x803e60, rc=500) - это значит что для
500-й ошибки post_action тоже вызывается?

http://www.ruby-forum.com/topic/145177#647736 - вот тут патч для
переключения post_action на ответы с кодом 200, но я не уверен чем он
модет помочь, так как в первую очередь не понятно почему оно не может
найти локейшн нужный :-(

On Thu, Dec 11, 2008 at 3:50 AM, Alexey Kovyrin <alexey@xxxxxxxxxxx> wrote:
> Совсем забыл:
>
> web01:/opt/nginx-global/sbin# ./nginx -V
> nginx version: nginx/0.6.32
> built by gcc 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
> configure arguments: --with-debug --prefix=/opt/nginx-global
> --with-http_ssl_module --with-http_stub_status_module
> --add-module=/root/build/nginx/scribd_module
> --add-module=/root/build/nginx/upload_module
>
> web01:/opt/nginx-global/sbin# uname -a
> Linux web01.scribd.com 2.6.18-6-amd64 #1 SMP Fri Jun 6 05:24:08 UTC
> 2008 x86_64 GNU/Linux
>
>
> On Thu, Dec 11, 2008 at 3:49 AM, Alexey Kovyrin <alexey@xxxxxxxxxxx> wrote:
>> Решил тут заюзать post_action, чтобы после отдачи страницы документа
>> юзеру дергать наш сервер аналитики (раньше дергал с бекенда, но щас
>> приделали squid перед ним - не выходит, так как 90% запросов отдаются
>> из кеша).
>>
>> Сделал вот так:
>>
>>    location = @analytics_docview {
>>        internal;
>>
>>        proxy_set_header  X-Analytics-page_type 'document';
>>        proxy_set_header  X-Analytics-docview_uri $docview_uri;
>>        proxy_set_header  X-Analytics-referer $http_referer;
>>        proxy_set_header  X-Analytics-user_agent $http_user_agent;
>>        proxy_set_header  X-Analytics-user_ip $remote_addr;
>>
>>        proxy_connect_timeout 5;
>>        proxy_read_timeout 5;
>>        proxy_send_timeout 5;
>>
>>        access_log logs/analytics-api.log main;
>>        error_log logs/analytics-api.error.log debug;
>>
>>        proxy_pass http://XXXXXXX:4000/collector/register_hit;
>>    }
>>
>>    # Distribute queries among different mongrel packs
>>    # DOCVIEW page - with caching
>>    location /doc/ {
>>        access_log logs/scribd.analytics.log analytics;
>>        add_header X-Served-By backend;
>>
>>        set $docview_uri $uri;
>>        post_action @analytics_docview;
>>        ..........................................
>>        ... много всего, в основном
>>        ... proxy_pass'ы всякие
>>        ..........................................
>>    }
>>
>>
>>
>> Результат оказался странным:
>>
>> 1) В еррор логе:
>>
>> 2008/12/11 02:20:38 [error] 7402#0: *36 could not find named location
>> "@analytics_docview" while sending to client, client: 66.249.90.136, s
>> erver: *.scribd.com, request: "GET
>> /doc/10536/PAN-F49A?query2=WWW.tininfo%40nsdl.co.in HTTP/1.0",
>> upstream: "http://10.10.170.18:8080/doc/10
>> 536/PAN-F49A?query2=WWW.tininfo%40nsdl.co.in", host: "www.scribd.com"
>>
>> 2) проверял на трафике в 50+ QPS и за 10-15 секунд получил десяток
>> core-файлов :-/
>>
>> Core was generated by `nginx: worker process       '.
>> Program terminated with signal 11, Segmentation fault.
>> #0  0x0000000000409e3c in ngx_vsnprintf (buf=0x7fff5291f12c "?*",
>> max=<value optimized out>, fmt=<value optimized out>,
>>    args=0x7fff5291f030) at src/core/ngx_string.c:426
>> 426                         *--p = (u_char) (ui32 % 10 + '0');
>> (gdb) bt
>> #0  0x0000000000409e3c in ngx_vsnprintf (buf=0x7fff5291f12c "?*",
>> max=<value optimized out>, fmt=<value optimized out>,
>>    args=0x7fff5291f030) at src/core/ngx_string.c:426
>> #1  0x000000000040a219 in ngx_snprintf (buf=0x7fff5291f12c "?*",
>> max=140734578683891, fmt=0x2ff <Address 0x2ff out of bounds>)
>>    at src/core/ngx_string.c:100
>> #2  0x0000000000406353 in ngx_log_error_core (level=4, log=0x7d2f00,
>> err=0, fmt=0x45e090 "could not find named location \"%V\"")
>>    at src/core/ngx_log.c:98
>> #3  0x000000000042901b in ngx_http_named_location (r=0x700640,
>> name=0x671d40) at src/http/ngx_http_core_module.c:1934
>> #4  0x000000000042b560 in ngx_http_post_action (r=0x700640) at
>> src/http/ngx_http_request.c:2560
>> #5  0x000000000042cd35 in ngx_http_finalize_request (r=0x700640,
>> rc=500) at src/http/ngx_http_request.c:1706
>> #6  0x0000000000429028 in ngx_http_named_location (r=0x700640,
>> name=0x671d40) at src/http/ngx_http_core_module.c:1937
>> #7  0x000000000042b560 in ngx_http_post_action (r=0x700640) at
>> src/http/ngx_http_request.c:2560
>> #8  0x000000000042cd35 in ngx_http_finalize_request (r=0x700640,
>> rc=500) at src/http/ngx_http_request.c:1706
>> #9  0x0000000000429028 in ngx_http_named_location (r=0x700640,
>> name=0x671d40) at src/http/ngx_http_core_module.c:1937
>> #10 0x000000000042b560 in ngx_http_post_action (r=0x700640) at
>> src/http/ngx_http_request.c:2560
>> #11 0x000000000042cd35 in ngx_http_finalize_request (r=0x700640,
>> rc=500) at src/http/ngx_http_request.c:1706
>> #12 0x0000000000429028 in ngx_http_named_location (r=0x700640,
>> name=0x671d40) at src/http/ngx_http_core_module.c:1937
>> #13 0x000000000042b560 in ngx_http_post_action (r=0x700640) at
>> src/http/ngx_http_request.c:2560
>> #14 0x000000000042cd35 in ngx_http_finalize_request (r=0x700640,
>> rc=500) at src/http/ngx_http_request.c:1706
>> #15 0x0000000000429028 in ngx_http_named_location (r=0x700640,
>> name=0x671d40) at src/http/ngx_http_core_module.c:1937
>> #16 0x000000000042b560 in ngx_http_post_action (r=0x700640) at
>> src/http/ngx_http_request.c:2560
>> #17 0x000000000042cd35 in ngx_http_finalize_request (r=0x700640,
>> rc=500) at src/http/ngx_http_request.c:1706
>> #18 0x0000000000429028 in ngx_http_named_location (r=0x700640,
>> name=0x671d40) at src/http/ngx_http_core_module.c:1937
>> #19 0x000000000042b560 in ngx_http_post_action (r=0x700640) at
>> src/http/ngx_http_request.c:2560
>> .............
>> ............тут очень много одинаковых блоков вызовов (злобная такая 
>> рекурсия)
>> ............
>> #39500 0x000000000042cd35 in ngx_http_finalize_request (r=0x700640,
>> rc=500) at src/http/ngx_http_request.c:1706
>> #39501 0x0000000000429028 in ngx_http_named_location (r=0x700640,
>> name=0x671d40) at src/http/ngx_http_core_module.c:1937
>> #39502 0x000000000042b560 in ngx_http_post_action (r=0x700640) at
>> src/http/ngx_http_request.c:2560
>> #39503 0x000000000042cd35 in ngx_http_finalize_request (r=0x700640,
>> rc=500) at src/http/ngx_http_request.c:1706
>> ---Type <return> to continue, or q <return> to quit---
>>
>> Дальше мне надоело жать ентер :-)
>>
>> Внимание, вопрос: что делать? :-(
>>
>> --
>> Alexey Kovyrin
>> http://kovyrin.info/
>>
>
>
>
> --
> Alexey Kovyrin
> http://kovyrin.info/
>



-- 
Alexey Kovyrin
http://kovyrin.info/