Multiple sites and subdomains on same IP stop working

i disagree with sdn421 - i run a commercial web platform with many (up to 100) web sites running from a single IP address with rarely any problem associated with doing that (almost never in fact - i can;t remember a ingle occasion that using a single ip address caused any problems)

my advice to try to diagnose the problem is to start by checking event log - is there anything useful in there?

next, try shutting down related services - wingate proxy?  what port/s does it run on?  i'd not be surprised if it were wingate grabbing your web port/s.

if you can do without wingate for a day, try running the server with wingate shut down, see if your IIS sites still crash.  if you really must have wingate, run it on a spare computer for a while (if poss).

cheers.

my 2 cents worth of comment:

Having more IPs is great but its not a viable cost recovery model.

IIS going down is invariably due to bad coding in my experiance. That would be about 90% of the time !!

Go to your event log and look for any IIS terminating unexpectedly events and look at those events just before for clues to what caused it.

Another item would be to be load the sites to High(isolated mode) to protect the sites from 'killing' each other. This would take up resources.

Hmmmm...
Some different opinions here, but at least I´m getting somewhere.

But PSSIEW; it´s not the IIS going down, it´s (usually) the subdomains only.

I also agree with you MEVEREST, shouldn´t be a problem running several sites on the same IP. It´s anyway not an option of using different IP´s for the different sites. It would just be to many IP´s floating around, and to much admin-work when changes are applied (happens quite frequently).

Any ideas of what I should look for in the event log in order to find SITES (not the IIS) going down? It´s so f**** huge, don´t have time to spend all day going through all sorts of messages I wouldn´t understand anyway.

Tnx so far guys

M.

There is an tool called event comb from microsft which will help you in this.

Also try to filter the log for items like DCOM and W3SVC errors and warnings.

By the way, what is IIS5.5 ? There is 5.0 on all W2K machines, 5.1 on XP Pro and 6.0 on .Net.. Haven't come across 5.5 though....

Ops..... typeO
IIS5.0 of course

Off to check the event log then.

Tnx
M.

M

go to the following link and download the scripts. In there is located the event comb

http://www.microsoft.com/technet/treeview/default.asp?url=/technet/security/prodtech/windows/windows2000/staysecure/secops01.asp

Install recent SPs for Windows and IIS.

If possible move to Win2000 Advanced Server - it has built-in network load balancing (NLB), that will enable you to have many servers operating on the same IP, and when one of the computers goes down, the request handled by this computer will be silently "redirected" to the others, until the "fallen" computer is back again.

HTH

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