HttpHealthcheckModule server not marked down
Sjaak Pieterse
sjaak23 at gmail.com
Tue Oct 4 07:39:59 UTC 2011
Hi Liseen,
setting hash_again greater than the number of servers works, equal not.
i think i will get in the code some day to patch the upstream_fair,
but than i need some free time.
thnx for the help.
grt
2011/10/3 liseen <liseen.wan at gmail.com>:
> Hi, sjaak
>
> On Mon, Oct 3, 2011 at 10:39 PM, Sjaak Pieterse <sjaak23 at gmail.com> wrote:
>>
>> Hey Liseen,
>>
>> Thank you for teh fix, it's working now for standard round robin, for
>> upstream_hash it's not working but that's no problem for us we are not
>> using that in production.
>
> The fail test also add one time to hash_again. Can you set hash_again
> 10(greater than or equal servers's number), try again and tell me the
> result? The upstream_hash module has worked for some time.
>>
>> what we often use is gnosek-nginx-upstream-fair, to make it work with
>> that, can you tell how to handle?
>
> Patch the upstream-fair module like round_robin and upstream_hash module.
> Maybe these should be a module that contains all of the following features:
> RR, Hash, Fair, Health check. Hope some body will provide such module. I
> don't like patching code.
>
>>
>>
>> this is what i've done to make it work for now:
>>
>> peckhardt at test-nginx:~/nginx-1.0.6$ patch -p1 <
>> ../liseen-healthcheck_nginx_upstreams-17298cf/healthcheck.patch
>> patching file src/http/ngx_http_upstream.c
>> Hunk #1 succeeded at 4270 (offset 11 lines).
>> patching file src/http/ngx_http_upstream.h
>> patching file src/http/ngx_http_upstream_round_robin.c
>> Hunk #2 succeeded at 25 with fuzz 2 (offset 9 lines).
>> Hunk #3 succeeded at 33 (offset 9 lines).
>> Hunk #4 succeeded at 68 (offset 9 lines).
>> Hunk #5 succeeded at 416 (offset 7 lines).
>> Hunk #6 succeeded at 448 (offset 7 lines).
>> Hunk #7 succeeded at 465 (offset 7 lines).
>> Hunk #8 succeeded at 506 (offset 7 lines).
>> Hunk #9 succeeded at 523 (offset 7 lines).
>> Hunk #10 succeeded at 617 (offset 7 lines).
>> patching file src/http/ngx_http_upstream_round_robin.h
>>
>> peckhardt at test-nginx:~/nginx-1.0.6$sudo ./configure
>> --with-http_ssl_module
>> --add-module=/home/peckhardt/gnosek-nginx-upstream-fair-2131c73
>> --with-http_stub_status_module
>> --add-module=/home/peckhardt/liseen-healthcheck_nginx_upstreams-17298cf
>> --add-module=/home/peckhardt/liseen-nginx_upstream_hash-43fab03
>> --prefix=/usr/local/nginx-1.0.6 --with-debug
>>
>> peckhardt at test-nginx:~/nginx-1.0.6$sudo su
>> peckhardt at test-nginx:~/nginx-1.0.6$make install clean
>>
>> nginx config:
>> ########### test healthcheck ######
>> upstream www-health{
>> server 213.154.235.185 ;
>> server 213.136.14.13 ;
>> #hash $request_uri;
>> #hash_again 1;
>> healthcheck_enabled;
>> healthcheck_delay 10000 ;
>> healthcheck_timeout 1000;
>> healthcheck_failcount 2;
>> #healthcheck_expected 'I_AM_ALIVE';
>> #Important: HTTP/1.0
>> healthcheck_send "GET / HTTP/1.0" 'Host: health.test.x.com';
>> }
>>
>>
>>
>> 2011/10/1 liseen <liseen.wan at gmail.com>:
>> > Hi,
>> >
>> > On Sat, Oct 1, 2011 at 7:16 AM, liseen <liseen.wan at gmail.com> wrote:
>> >>
>> >> Hi,
>> >> Please try:
>> >>
>> >>
>> >> https://github.com/liseen/healthcheck_nginx_upstreams/blob/master/healthcheck.patch
>> >> patch -p1 < healthcheck.patch
>> >> ./configure ....
>> >> if you use healthcheck with upstream hash, please compile with branch
>> >> support_http_healthchecks of cep21's fork
>> >>
>> >>
>> >> https://github.com/cep21/nginx_upstream_hash/tree/support_http_healthchecks
>> >
>> > if all upstreams' backends are down(healthcheck), cep's upstream_hash
>> > will
>> > ignore Healthcheck, if it is not you need, Please try:
>> > https://github.com/liseen/nginx_upstream_hash
>> > If you find something wrong, please open an issue on github. thanks.
>> >
>> > liseen
>> >
>> >>
>> >>
>> >>
>> >> liseen
>> >>
>> >>
>> >> On Sat, Oct 1, 2011 at 6:06 AM, liseen <liseen.wan at gmail.com> wrote:
>> >>>
>> >>> Hi,
>> >>> It is a bug.
>> >>> the ngx_upstream_get_peer only check the index greater than i; forgot
>> >>> to
>> >>> check i itself.
>> >>> I used my nginx patch for healthcheck, I have used it in production
>> >>> more
>> >>> than half a year. I will upload it to my github in some hours.
>> >>> liseen
>> >>> On Fri, Sep 23, 2011 at 4:34 AM, Sjaak Pieterse <sjaak23 at gmail.com>
>> >>> wrote:
>> >>>>
>> >>>> Hi there,
>> >>>>
>> >>>> i'm trying to use the HttpHealthcheckModule for nginx, but i have
>> >>>> some
>> >>>> troubles with it.
>> >>>>
>> >>>> i have two servers in my upstream, when sabotaging the health for one
>> >>>> server i see in the status view of healthcheck that the server is
>> >>>> down(1), but if i go to the website i'm checking i still come out on
>> >>>> it and see a broken page.
>> >>>>
>> >>>> how can i arrange that the server automatically is marked as down
>> >>>> when
>> >>>> the check fails?
>> >>>>
>> >>>> sorry for my bad english and maybe noob questions.
>> >>>>
>> >>>> config:
>> >>>> upstream www-health{
>> >>>> server x.x.x.1 ;
>> >>>> server x.x.x.2 ;
>> >>>> healthcheck_enabled;
>> >>>> healthcheck_delay 10000 ;
>> >>>> healthcheck_timeout 1000;
>> >>>> healthcheck_failcount 2;
>> >>>> #healthcheck_expected 'I_AM_ALIVE';
>> >>>> #Important: HTTP/1.0
>> >>>> healthcheck_send "GET / HTTP/1.0" 'Host: health.test.x.com'
>> >>>> 'Conection: close' ;
>> >>>> }
>> >>>>
>> >>>> nginx: nginx version: nginx/1.0.6
>> >>>> nginx: built by gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
>> >>>> nginx: TLS SNI support enabled
>> >>>> nginx: configure arguments: --with-http_ssl_module
>> >>>> --add-module=/gnosek-nginx-upstream-fair-2131c73
>> >>>> --with-http_stub_status_module
>> >>>> --add-module=/cep21-healthcheck_nginx_upstreams-b33a846
>> >>>> --prefix=/usr/local/nginx-1.0.6 --with-debug
>> >>>>
>> >>>> used:
>> >>>> peckhardt at test-nginx:~/nginx-1.0.6$patch -p1 <
>> >>>> /cep21-healthcheck_nginx_upstreams-5fa4bff/nginx.patch
>> >>>>
>> >>>> hope someone would help me.
>> >>>>
>> >>>> greetings
>> >>>>
>> >>>> _______________________________________________
>> >>>> nginx mailing list
>> >>>> nginx at nginx.org
>> >>>> http://mailman.nginx.org/mailman/listinfo/nginx
>> >>>
>> >>
>> >
>> >
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>> >
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