Re: 503 errors using Citrix Netscaler
Look at the logs in the netscaler for service or vserver down, it seems to me that the vserver you're pointing the varnish to, is going up and down and that's why the 503 response from the netscaler. Regards, Pablo On Thu, Jan 15, 2009 at 5:08 AM, Naama Bamberger wrote: > We're using Varnish 2.0.1 on our site, with Citrix Netscaler between > Varnish and our Apache Web machines. > > We're getting hundreds of sporadic 503 errors an hour. > > When I let Varnish round-robin between our web machines, bypassing the load > balancer, the problem disappears. > > (We don't want to use this as a permanent solution, though, for failover > and maintenability reasons). > > > > Are there any known issues regarding Varnish and Citrix Netscaler? > > > > Thanks, > > Naama > > ___ > varnish-misc mailing list > varnish-misc@projects.linpro.no > http://projects.linpro.no/mailman/listinfo/varnish-misc > > ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: Dropping some mailing lists?
Agree On Fri, Jan 9, 2009 at 10:37 AM, Tollef Fog Heen wrote: > > (Please reply only to -misc so we don't end up with a zillion copies of > this all over the lists.) > > Hi, > > we currently have very many mailing lists: > > varnish-announceRelease announcements and other important news. > varnish-bugsBug reports go here. > varnish-commit Commit messages go here. > varnish-dev Discussions regarding Varnish development. > varnish-distDiscussions regarding Varnish releases and packaging > varnish-miscDiscussions on miscellaneous topics relating to Varnish > varnish-testFor testing purposes. > > At the same time, we don't have that much traffic, so having a total of > seven mailing lists seem a bit excessive. > > I suggest we get rid of -dev, -dist and -test. -announce and -misc will > be kept as discussion lists. -bugs and -commit will continue as > trac-to-email lists (i.e. not discussion lists). > > Comments? > > -- > Tollef Fog Heen > Redpill Linpro -- Changing the game! > t: +47 21 54 41 73 > ___ > varnish-misc mailing list > varnish-misc@projects.linpro.no > http://projects.linpro.no/mailman/listinfo/varnish-misc > ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: Varnish ALWAYS getting index from backend
Have you removed expires header ? Also, you removed those headers, but do you specify any expiration ? Regards, Pablo 2008/12/9, Tomasz Leszczyński <[EMAIL PROTECTED]>: > Headers from backend (connect directly to backend): > > HTTP/1.x 200 OK > Date: Tue, 09 Dec 2008 21:42:54 GMT > Server: Apache/1.3.33 (Debian GNU/Linux) PHP/4.3.10-18 > X-Powered-By: PHP/4.3.10-18 > Set-Cookie: CMS_Session=95775f09228158a4a0e16a617d8c2372; path=/ > Expires: Thu, 19 Nov 1981 08:52:00 GMT > Cache-Control: no-store, no-cache, must-revalidate, post-check=0, > pre-check=0 > Pragma: no-cache > Keep-Alive: timeout=15, max=100 > Connection: Keep-Alive > Transfer-Encoding: chunked > Content-Type: text/html; charset=iso-8859-2 > > > > I try remove cookies... not work. Removing Cache-Control, pragma etc. in > vcl_fetch subroutine - not effect. > > > Line from varnishncsa -b: > > 192.168.3.34 - - [09/Dec/2008:21:49:00 +] "GET http://192.168.3.34/ > HTTP/1.1" 200 - "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; pl; > rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4" > > (rows are broken) > > Backend is SLOW. Very slow. > > > ___ > varnish-misc mailing list > varnish-misc@projects.linpro.no > http://projects.linpro.no/mailman/listinfo/varnish-misc > ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: Varnish caching issues, cache size, expires, cache resets, whatsgoing on?
Demitrious, before performing the same recompilation on the other server, try to set the /proc/sys/vm/swappiness to 10, or to 0 that should reduce the natural behavior of Linux to send data to swap. Hope this helps. Regards, Pablo ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: recommendation for swap space?
Sacha, try to modify the /proc/sys/vm/swappiness it's on 60 (default), I reduce it to 20 or even 0, on my oracle cluster, to prevent important process from being swapped. Regards, Pablo On Tue, Apr 8, 2008 at 5:51 AM, Sascha Ottolski <[EMAIL PROTECTED]> wrote: > Am Montag 07 April 2008 18:00:14 schrieb Dag-Erling Smørgrav: > > > Sascha Ottolski <[EMAIL PROTECTED]> writes: > > > now that my varnish processes start to reach the RAM size, I'm > > > wondering what a dimension of swap would be wise? I currently have > > > about 30 GB swap space for 32 GB RAM, but am wondering if it could > > > even make sense to have no swap at all? My cache file is 517 GB in > > > size. > > > > Varnish does not use swap. > > > > DES > > hmm, then I'm wondering why my machines do swap quite a bit. It's a > almost naked linux, the only processes really doing some work are > varnishd and varnishlog. > > I have 32 GB of RAM, 30 GB of swap, and 517 GB of cache file. according > to "top", varnishd has a resident size of 25 GB, and almost 1,5 GB of > swap is in use. kswapd often shows up in "top". > > > # free > total used free sharedbuffers cached > Mem: 32969244 32874908 94336 0 108648 29129752 > -/+ buffers/cache:3636508 29332736 > Swap: 290454801473200 27572280 > > > it's not worrying me, performance is brilliant, I'm just curious :-) > > > Thanks, Sascha > > > ___ > varnish-misc mailing list > varnish-misc@projects.linpro.no > http://projects.linpro.no/mailman/listinfo/varnish-misc > ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: Custom error message
You can always customize your apache error page. Regards, Pablo On 8/13/07, Poul-Henning Kamp <[EMAIL PROTECTED]> wrote: > In message <[EMAIL PROTECTED]>, Knut-Olav Hoven writes: > > >On Monday 13 August 2007 12:11:47 Dag-Erling Sm=F8rgrav wrote: > >> Knut-Olav Hoven <[EMAIL PROTECTED]> writes: > >> > How can I customize the error messages that Varnish return? > >> > >> Not easily; edit bin/varnishd/cache_synthetic.c and recompile. > > > >Ok. > > > >So I can't intercept the response in vcl, detect if the response code is 503 > >and then trigger a new 503 error with a different message or HTML code? > > You can change the status but not the HTML ... yet. > > We have ideas for this area, basically, you would detect the 503, > edit req.url and restart the transaction with the new url. > > Not yet implemented however. > > We have also talked about being able to have local content on the > varnish server, likely in the form of a .tar file, but this is also > yet to be implemented. > > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > [EMAIL PROTECTED] | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > ___ > varnish-misc mailing list > varnish-misc@projects.linpro.no > http://projects.linpro.no/mailman/listinfo/varnish-misc > ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
