Вопрос по перебору бэкендов
Maxim Dounin
mdounin at mdounin.ru
Sat Feb 21 02:22:28 MSK 2009
Hello!
On Sat, Feb 21, 2009 at 12:57:01AM +0300, Михаил Монашёв wrote:
> Здравствуйте.
>
> Заметил в логах вот такие строчки:
>
> 20/Feb/2009:21:06:23 +0300 502 "502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502" 0.052 "0.001, 0.001, 0.000, 0.005, 0.001, 0.000, 0.001, 0.000, 0.001, 0.004, 0.001, 0.000, 0.001, 0.000, 0.001, 0.003, 0.000, 0.001, 0.000, 0.001, 0.000, 0.003, 0.001, 0.000, 0.000, 0.001, 0.000, 0.002, 0.001, 0.000, 0.000, 0.001, 0.000, 0.001, 0.001, 0.000, 0.001, 0.000, 0.001, 0.000, 0.001, 0.000, 0.001, 0.000, 0.000, 0.001, 0.001, 0.000, 0.001, 0.000, 0.002, 0.000, 0.001, 0.000, 0.001, 0.001, 0.001, 0.000, 0.001, 0.000, 0.001, 0.001, 0.001, 0.000, 0.001, 0.000, 0.001" "1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.5:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.4:80" 84.42.151.118 354 narutolee.beon.ru "GET / HTTP/1.1" "http://images.google.com/imgres?imgurl=http://i61.beon.ru/11/41/94111/92/4044992/461049Naruto_x_Hinata___Rasengan_by_Pia_sama.jpeg&imgrefurl=http://narutolee.beon.ru/&usg=__6dzK7SqWZFVi_5lYbUu2XFwJI0A=&h=366&w=300&sz=39&hl=ru&start=49&um=1&tbnid=8KiGppQD0L0zsM:&tbnh=122&tbnw=100&prev=/images%3Fq%3Dnaruto%26start%3D40%26ndsp%3D20%26um%3D1%26hl%3Dru%26sa%3DN" "Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.9.0.6) Gecko/2009011913 Firefox/3.0.6"
>
> 20/Feb/2009:21:06:31 +0300 502 "502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502, 502" 0.065 "0.001, 0.000, 0.001, 0.002, 0.000, 0.000, 0.001, 0.000, 0.001, 0.002, 0.000, 0.000, 0.001, 0.000, 0.001, 0.002, 0.001, 0.000, 0.000, 0.001, 0.000, 0.002, 0.000, 0.000, 0.001, 0.000, 0.001, 0.002, 0.000, 0.000, 0.001, 0.001, 0.000, 0.002, 0.001, 0.000, 0.000, 0.001, 0.000, 0.002, 0.000, 0.001, 0.000, 0.001, 0.000, 0.002, 0.001, 0.000, 0.000, 0.001, 0.000, 0.002, 0.001, 0.000, 0.000, 0.001, 0.000, 0.002, 0.001, 0.000, 0.001, 0.000, 0.001, 0.002, 0.001, 0.000, 0.001, 0.000, 0.001, 0.002, 0.000, 0.000, 0.001, 0.000, 0.000, 0.002, 0.001, 0.000, 0.001, 0.000, 0.001, 0.000, 0.001, 0.000, 0.001, 0.001, 0.000, 0.001, 0.000, 0.001, 0.001, 0.000, 0.001, 0.000, 0.001, 0.000, 0.001" "1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 127.0.1.8:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.5:80, 1.2.3.4:80, 1.2.3.5:80, 1.2.3.6:80, 1.2.3.7:80, 1.2.3.8:80, 1.2.3.4:80" 92.112.23.162 354 279.beon.ru "GET /54-095-test-dlja-devochek-anna-tochno.zhtml HTTP/1.1" "http://yandex.ru/yandsearch?text=%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%B8%D0%B3%D1%80%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B5%D0%B2%D0%BE%D1%87%D0%B5%D0%BA+%D0%BD%D0%B0+%D0%BF%D0%BE%D1%86%D0%B5%D0%BB%D1%83%D0%B8&stpar2=%2Fh1%2Ftm29%2Fs4&stpar4=%2Fs4&stpar1=%2Fu1&stpar3=%2Fm4%2Ftc34%2Fnc1&lr=187" "Opera/9.62 (Windows NT 5.1; U; ru) Presto/2.1.1"
>
> Конфигурация апстрима вот такая:
>
> upstream my_backends {
> server 127.0.1.8:80 weight=1 max_fails=20 fail_timeout=3s;
> server 1.2.3.4:80 weight=5000 max_fails=1000 fail_timeout=3s;
> server 1.2.3.5:80 weight=10000 max_fails=1000 fail_timeout=3s;
> server 1.2.3.6:80 weight=16000 max_fails=1000 fail_timeout=3s;
> server 1.2.3.7:80 weight=16000 max_fails=1000 fail_timeout=3s;
> server 1.2.3.8:80 weight=16000 max_fails=1000 fail_timeout=3s;
> server 1.2.3.4:80 backup;
> server 1.2.3.5:80 backup;
> server 1.2.3.6:80 backup;
> server 1.2.3.7:80 backup;
> server 1.2.3.8:80 backup;
> }
>
> Я правильно понимаю, что апстрим знает только про последний
> запрошенный бэкенд и может отправлять один запрос по кругу даже на те
> бэкенды, которые ранее на него вернули ошибку?
Нет, не правильно. В обычных условиях nginx помнит, куда он уже
сходил, и больше туда не ходит. Это бага в реализации backup
серверов.
Maxim Dounin
More information about the nginx-ru
mailing list