----- Gaute Amundsen <[EMAIL PROTECTED]> wrote:
> I have come to understand that in some builds under some conditions
> varnish 
> may hang or a crash. (we run 1.0.4-3el4.i386.rpm)

Hi Gaute,

I'll just say that in my experience Varnish has proven itself to be extremely 
stable. We actually run 1.0.3 across the board (yes I know there are known 
bugs, however we do not experience them at all) and Varnish currently serves up 
all requests at www.startsiden.no and www.abcnyheter.no. If anything breaks, it 
has not so far been varnish. 

However our scenario is pretty different from yours, we have very few vhosts 
but each has a very high amount of traffic. There is little or no advanced VCL 
configuration at all on our sites. We're pretty close to the default. The two 
sites have a different setup with regards to placement of Varnish. One site 
runs with dedicated varnish servers, the other has varnish and apache2 on the 
same box.

> Now the question is, how do I best detect if varnsih should have a
> problem?
> Would it be reasonably reliable to just chek if the pid 
> from /var/run/varnish.pid is running, do I need to fetch a page, or is
> there 
> some better way?

Well, we always monitor as high up as possible to make sure everything works on 
all levels. Lower level monitoring is useful too, but for pinpointing with more 
accuracy where the problem is. 

Regards
-- 
Denis Braekhus - Teknisk Ansvarlig ABC Startsiden AS
http://www.startsiden.no

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