Re: Some web site make Varnish return a blank page
I'm not a guru so I could really use more information to figure out exactly what is happening. Are you implying that when you have varnish in front of your 2 websites it is working correctly when accessing the sites through wget but not hen using internet explorer and/or firefox ? If so, could you paste some varnishlog of wget - varnish - site1 - site2 firefox - varnish - site1 - site2 explorer - varnish - site1 - site2 and describe for each if it is working or not. Martin fulan Peng wrote: Hi Varnish gurus: I am new to varnish. I got Varnish working with default config with one web site. when I change to another web site, varnish response with a blank page. html /html wget can normally fetch the index.html page. When I start varnishlog and cat varnish.log file, there are a lot of PING and PONG. No clue what is wrong. No other error message. Please help me out! Thank you! Fulan Peng ___ 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
Not Able to Purge in Varnish
Hi All, I am using varnish for static files caching and multiple domains are getting served from varnish cluster and i want to purge static files for specific domain so how can i do that. I tired following but it is not working. 1) purge req.http.host ~ xyz.com 101 44 Unknown request. Type 'help' for more info 2) url.purge req.http.host ~ xyz.com 105 20 Too many parameters Please let me know how can purge domain specific files. -- Abhishek Kumar Singh ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: [varnish] Re: [varnish] Re: Handling of cache-control
hey,
That way, any shared proxy cache on the path between our caches and
the client would cache the object.
Our customer didn't want this. The purpose was to have the freshest
information as close as the origin as possible.
cheers
On Thu, Jan 28, 2010 at 12:00 AM, pablort pablort+varn...@gmail.com wrote:
Isn't this the equivalent of and max-age=5 and s-maxage=0 ?
On Wed, Jan 20, 2010 at 7:19 AM, Bedis 9 bed...@gmail.com wrote:
Hi,
Netcache devices had the X-Accel-Cache-Control headers in order to
allow an origin server to setup different Cache-Control parameters for
the cache and the end-user.
The netcache will follow the X-Accel-Cache-Control while the end user
will follow the Cache-Control.
I've a few customer using this, mainly for sports events where live
is the key.
They setup X-Accel-Cache-Control to max-age=5 while Cache-Control is
set to no-cache.
That way, all the load generated by thousends of request per second
for live stuff is offloaded to the cache layer.
Only a few request goes back to the origin.
I was able to reproduce such behavior with the following inline C:
sub vcl_fetch {
[...]
# Check if X-Accel-Cache-Control exists and follow it
if (obj.http.X-Accel-Cache-Control) {
C{
char *cache;
int max_age = 0;
cache = VRT_GetHdr(sp, HDR_OBJ, \026X-Accel-Cache-Control:);
if(cache) {
char *s = NULL;
/* Looking for max-age */
if (s = strstr(cache, max-age=)) {
s+=8;
max_age = strtoul(s, 0, 0);
if (max_age) {
VRT_l_obj_ttl(sp, max_age);
}
}
}
}C
unset obj.http.X-Accel-Cache-Control;
}
# Cache-Control and Pragma headers preventing caching
if ((!obj.http.X-Accel-Cache-Control) (obj.http.Pragma ~
no-cache || obj.http.Cache-Control ~ (no-cache|no-store|private)))
{
pass;
}
}
[...]
}
Maybe it can be useful to somebody else :)
cheers
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Assert error in VRT_ESI
Hi everybody,
I'm trying to experiment with ESI but even the simplest setup crashes.
My setup is FreeBSD 7.2, apache 2.2.14, varnish 2.0.6 from ports.
I have a simple page:
index.html
html
esi:include src=/include.html/
/html
include.html
pTest/p
When I open it through Varnish the connection is reset. Requesting
include.html directly is no problem.
My default.vcl:
backend dev {
.host = 192.168.2.10;
.port = 80;
}
sub vcl_recv {
if (req.url ~ \.(js|css|gif|jpg|png|ico|txt|swf|mp3)(\?.*)?$) {
unset req.http.cookie;
}
if (req.http.Accept-Encoding) {
if (req.http.Accept-Encoding ~ gzip) {
set req.http.Accept-Encoding = gzip;
} elsif (req.http.Accept-Encoding ~ deflate) {
set req.http.Accept-Encoding = deflate;
} else {
# unkown algorithm
remove req.http.Accept-Encoding;
}
}
if (req.url == /index.html) {
--esi;
}
}
What happens:
# varnishd -d -d -f /usr/local/etc/varnish/default.vcl -a 192.168.2.15:80
storage_file: filename: ./varnish.2adBfM (unlinked) size 1346836 MB.
Using old SHMFILE
Debugging mode, enter start to start child
start
child (57004) Started
200 0
Child (57004) said Closed fds: 4 8 9 11 12
Child (57004) said Child starts
Child (57004) said managed to mmap 1412260429824 bytes of 1412260429824
Child (57004) said Ready
Child (57004) died signal=6
Child (57004) Panic message: Assert error in VRT_ESI(), cache_vrt_esi.c
line 658:
Condition((sp-obj) != NULL) not true.
thread = (cache-worker)
sp = 0x806572008 {
fd = 9, id = 9, xid = 678967366,
client = 192.168.2.24:57004,
step = STP_RECV,
handling = error,
restarts = 0, esis = 0
ws = 0x806572080 {
id = sess,
{s,f,r,e} = {0x806572810,+523,0x0,+16384},
},
http[req] = {
ws = 0x806572080[sess]
GET,
/index.html,
HTTP/1.1,
Host: dutchcowboys.bert-jan.bug,
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US;
rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7,
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,
Accept-Language: en-us,en;q=0.5,
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7,
Keep-Alive: 300,
Connection: keep-alive,
Cookie: __unam=c4094e2-124e7db5c01-3e94d73-153;
PHPSESSID=36e043ec7c9710545523e4e04c538734,
Accept-Encoding: gzip,
},
worker = 0x7dff0a70
vcl = {
srcname = {
input,
Default,
},
},
},
Child cleanup complete
child (57005) Started
Child (57005) said Closed fds: 4 8 9 11 12
Child (57005) said Child starts
Child (57005) said managed to mmap 1412260429824 bytes of 1412260429824
Child (57005) said Ready
Any suggestions would be very welcome.
Bert-Jan de Lange
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Re: Memory usage
My backing store is file-based. In any case, thanks to you both -- I have ordered some more RAM and will see what happens. Martin On Wed, Jan 27, 2010 at 12:23 AM, Michael Fischer mich...@dynamine.netwrote: On Tue, Jan 26, 2010 at 7:23 PM, Martin Goldman m...@mgoldman.com wrote: I'm running Varnish on a box with 4GB RAM. There are hundreds of thousands of objects being served, and I'm certain that they don't all fit in that relatively meager amount of RAM. I understand that Varnish's model dictates that the kernel will be trusted to use virtual memory as necessary if the cached objects don't fit in RAM. I have a few questions about this: 1. How can you tell whether your Varnish objects fit in RAM? You can't guarantee that they will unless you set your cache size at or below the amount of RAM you have installed. 2. If I have objects residing in virtual memory, to what extent will my performance be adversely affected? If I want my site to be fast, do I basically need to go out and buy as much RAM as it will take so that virtual memory isn't needed? Technically, it's go out and buy as much RAM as it will take to avoid being swamped by paging. But yes. 3. I noticed tonight that my machine was using a few hundred megs of swap space, which I've never seen happen before. Varnish is the only non-system service running on this box. My understanding was that Varnish would get only as much RAM as was available and then send the overflow into the file-backed virtual memory. If that's the case, though, then why is swap space being used? Is this just a side effect of how the kernel allocates memory, or is something else going on here? Is your backing store file-based, or malloc-based? If the latter, that would explain the swap space being consumed. Or, as Darryl said, the housekeeping overhead of a VERY large file-backed cache could make the Varnish process very large. --Michael ___ varnish-misc mailing list varnish-misc@projects.linpro.no http://projects.linpro.no/mailman/listinfo/varnish-misc
Re: Varnish Prefetch
In message 75cf5801001270025s722f114ax9335dba334a84...@mail.gmail.com, Paras Fadte writes: Thanks for the response . So with grace mode is it possible to fetch an object from backend about x seconds before its expires time is reached ? No, sorry. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | 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
Re: Varnish Prefetch
Thanks for the response Poul. On Fri, Jan 29, 2010 at 3:49 AM, Poul-Henning Kamp p...@phk.freebsd.dkwrote: In message 75cf5801001270025s722f114ax9335dba334a84...@mail.gmail.com, Paras Fadte writes: Thanks for the response . So with grace mode is it possible to fetch an object from backend about x seconds before its expires time is reached ? No, sorry. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | 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
