Re: make varnish still respond if backend dead

[Sascha Ottolski]

Am Mittwoch 23 April 2008 19:34:14 schrieb Max Clark:
 Did you find a solution to this?

not really, I hope to have found a workaround by adding this to my vcl:

sub vcl_fetch {
remove obj.http.X-Varnish-Host;
setobj.http.X-Varnish-Host = myhostname;

if (obj.status == 404) {
set obj.ttl = 7200s;
}
}

so 404 still may happen, but are cached shorter than my default.


Cheers, Sascha



 On Fri, Apr 4, 2008 at 12:51 AM, Sascha Ottolski [EMAIL PROTECTED] 
wrote:
  Hi,
 
   sorry if this is FAQ: what can I do to make varnish respond to
  request if it's backend is dead. should return cache hits, of
  course, and a proxy error or something for a miss.
 
   and how can I prevent varnish to cache 404 for objects it
  couldn't fetch due to a dead backend? at least I think that is what
  happened, as varnish reported 404 for URLs that definetely exist;
  the dead backend seems to be the only logical explanation why
  varnish could think it's not.
 
   oh, and is there a way to put the local hostname in a header? I
  have two proxies, load balanced by LVS, so using server.ip reports
  the same IP on both nodes.
 
 
   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: make varnish still respond if backend dead

[Max Clark]

Did you find a solution to this?

On Fri, Apr 4, 2008 at 12:51 AM, Sascha Ottolski [EMAIL PROTECTED] wrote:
 Hi,

  sorry if this is FAQ: what can I do to make varnish respond to request
  if it's backend is dead. should return cache hits, of course, and
  a proxy error or something for a miss.

  and how can I prevent varnish to cache 404 for objects it couldn't
  fetch due to a dead backend? at least I think that is what happened, as
  varnish reported 404 for URLs that definetely exist; the dead backend
  seems to be the only logical explanation why varnish could think it's
  not.

  oh, and is there a way to put the local hostname in a header? I have two
  proxies, load balanced by LVS, so using server.ip reports the same IP
  on both nodes.


  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

make varnish still respond if backend dead

[Sascha Ottolski]

Hi,

sorry if this is FAQ: what can I do to make varnish respond to request 
if it's backend is dead. should return cache hits, of course, and 
a proxy error or something for a miss.

and how can I prevent varnish to cache 404 for objects it couldn't 
fetch due to a dead backend? at least I think that is what happened, as 
varnish reported 404 for URLs that definetely exist; the dead backend 
seems to be the only logical explanation why varnish could think it's 
not.

oh, and is there a way to put the local hostname in a header? I have two 
proxies, load balanced by LVS, so using server.ip reports the same IP 
on both nodes.


Thanks, Sascha
___
varnish-misc mailing list
varnish-misc@projects.linpro.no
http://projects.linpro.no/mailman/listinfo/varnish-misc