[THIN] Re: NFuse servers extremely slow response

  • From: Mason Dively <mdively@xxxxxxxxxx>
  • To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
  • Date: Tue, 18 Mar 2003 13:48:55 -0600

You are really not going to believe this, but after posting my response to 
Tom's message yesterday afternoon, I came in this morning and had this EXACT 
problem with my larger Metaframe farm (120 application servers.)  The problem 
was exactly how Mike described it below, the XML service on ONE application 
server was causing the problem for everyone trying to log into the Nfuse site.  
As soon as we stopped the XML service for the problem server, the site 
immediately began working again.  In talking to Citrix's support people they 
recommended the following hotfix to correct this problem:  
http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B292548 or of course 
applying Win2K SP3 (which we haven't done to this point.)  It's scary to think 
that one "flaky" server can prevent logons!!

And yes, by the way, I now believe our problem was a result of demonic 
possession.

Thanks,
 
Mason B. Dively  CCA, MCP
Amdocs CMI Production Windows Support


-----Original Message-----
From: Mike Semon [mailto:msemon@xxxxxxx] 
Sent: Monday, March 17, 2003 10:02 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: NFuse servers extremely slow response


I am seeing this same problem for NFuse pointing back to a Metaframe 1.8
farm. I think we have a box
with a flaky XML service.  Also, check the ICA browser service on the
servers your NFuse server is
pointed.  I found one server the ICA browser service was hung.  Restarted
the service and everything
worked.

Mike

-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of Mason Dively
Sent: Monday, March 17, 2003 4:38 PM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: NFuse servers extremely slow response


Tom--

I feel your pain--we had the EXACT same thing happen in one of our farms.
One box had a "flaky" XML service and was completely preventing users from
logging in through our NFuse site.  We did not actually confirm that it was
due to demonic possession but that explanation would certainly be more
credible than any of the answers that the Citrix Tech Support guy gave us.
When we asked what we can do to prevent future outages like this we were
told there was nothing we could to do ensure that it wouldn't happen again.
Anyone have any ideas or experience with this type of problem?

Thanks,

Mason B. Dively  CCA, MCP
Amdocs Windows Administration


-----Original Message-----
From: Monahan, Thomas [mailto:Thomas.Monahan@xxxxxxxxxxx]
Sent: Thursday, March 13, 2003 4:13 AM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: NFuse servers extremely slow response


Just to let you know that the problem was due to the one of the servers
mis-behaving with the XML service. I say mis-behaving but what I really mean
is it got posessed by the Devil himself and decided to carry out a denial of
service attack on the farm. I think he posessed the citrix users as well as
they weren't too happy with the farm being down for nearly an entire day.
The problem was only tracked down when the XML port was change for some of
the servers and that functioned fine. Eventually by trial and error we
tracked down the server that was posessed. And even more proof that the
server was posessed was the number of the server, it was our cy13 server.

Anyway, havn't been able to rtp into it yet to check out of the event logs,
so I don't know what it could have been doing that could have jamed up the
entire xml service on the farm.

Tom


> -----Original Message-----
> From: Darryl Janetzki [SMTP:darrylj@xxxxxxxxxxxxxxxx]
> Sent: 12 March 2003 13:13
> To:   Monahan, Thomas
> Subject:      RE: [THIN] Re: NFuse servers extremely slow response
>
> Well, first thing to check, or I did.
> http://localhost on the data collector or any  metaframe server in the
> farm that has NFUSE installed
>
> In my case each metaframe server's web and NFUSE service was not working
> (page not found) published applications still were working as normal
>
> If the NFUSE web functions to another server but not the production
> environment I would check DNS/netbios and IP connectivity issues (are
> you sure that NFUSE is functioning on the productions servers.)
>
> A similar event occurred but this was access to all sites when I
> deployed the IIS lockdown, group policy, wpad from and ISA server (ISA
> FR1)
> What happened group policy tattooed each PC in the OU with Autodect
> setting
> Wpad.dat was denied by the ISA server in the URLSCAN.INI
> The effect of this was that the server and clients were secure NAT
> clients and the ISA server denied access to the WPAD thus denying access
> to all resources Perhaps your development site is not using the same
> configuration. A review of URLSCAN.LOG if you are using it on the
> Web/proxy server may have the information on the problem.
>
>
> Regards
> Darryl
>
> -----Original Message-----
> From: Monahan, Thomas [mailto:Thomas.Monahan@xxxxxxxxxxx]
> Sent: Wednesday, 12 March 2003 11:35 PM
> To: Darryl Janetzki
> Subject: RE: [THIN] Re: NFuse servers extremely slow response
>
> Hi,
>
> Thanks for the suggestion. It didn't solve our problem.
>
> We pointed one of our production nfuse servers to our development farm
> and
> it works fine, it just doesn't work when pointed to our production farm.
>
>
>
>
> Tom
>
> > -----Original Message-----
> > From:       Darryl Janetzki [SMTP:darrylj@xxxxxxxxxxxxxxxx]
> > Sent:       12 March 2003 10:59
> > To: Thomas.Monahan@xxxxxxxxxxx
> > Subject:    RE: [THIN] Re: NFuse servers extremely slow response
> >
> > I had the problem a week ago. The nfuse icons were "greyed" out
> > fortunately the link still worked.
> >
> > The solution I applied was to uninstall NFUSE on my NFUSE web server
> and
> > apply the security update version. I then ran the NFUSe wizard and
> > recreated the nfuse page.
> >
> > The really interesting thing that happened next is that all the WEB
> > servers on all Metaframe servers did not function at all. The nfuse
> web
> > site that I direct all users was unable to connect and display any
> > applications.
> > I then decided to restart the IMA then IIS from the IIS console. I
> > commenced at the Data collector, then tested each of the metaframe web
> > servers with the same procedure ... All was well again.
> >
> > DarrylJ@xxxxxxxxxxxxxxxx
> >
> >
> >
> > -----Original Message-----
> > From: Monahan, Thomas [mailto:Thomas.Monahan@xxxxxxxxxxx]
> > Sent: Wednesday, 12 March 2003 9:43 PM
> > To: 'thin@xxxxxxxxxxxxx'
> > Subject: [THIN] Re: NFuse servers extremely slow response
> >
> >
> > Update: Nfuse icons don't show up, clicking on icon doesn't connect.
> > Just
> > shows opening page.
> >
> > Regards,
> > Thomas
> > UUSDTC Admin and Support
> > Ph: 01925 233690 Ext: 33690
> >
> > > -----Original Message-----
> > > From:     Monahan, Thomas [SMTP:Thomas.Monahan@xxxxxxxxxxx]
> > > Sent:     12 March 2003 09:28
> > > To:       thin@xxxxxxxxxxxxx
> > > Subject:  [THIN] NFuse servers extremely slow response
> > >
> > >
> > > Hi,
> > >
> > > There is just a "little" problem with our Nfuse servers. They are
> all
> > > giving
> > > extemely slow response, so slow sometimes that it times out. Servers
> > are
> > > on
> > > different subnets. All giving the same slow response with varying
> > > severity.
> > > Tried restarts, can't find any XML service problems on our farm
> > servers.
> > > What could be causing this?
> > >
> > >
> > > Any help much appreciated.
> > >
> > > Thomas
> > >
> > >
> > >
> > >
> > > ***********************************************************
> > > The information contained in this e-mail is intended only
> > > for the individual to whom it is addressed. It may contain
> > > privileged and confidential information. If you have
> > > received this message in error or there are any problems,
> > > please notify the sender immediately and delete the message
> > > from your computer. The unauthorised use, disclosure,
> > > copying or alteration of this message is forbidden. Neither
> > > United Utilities PLC nor any of its subsidiaries will be
> > > liable for direct, special, indirect or consequential
> > > damage as a result of any virus being passed on, or arising
> > > from alteration of the contents of this message by a third
> > > party.
> > >
> > > United Utilities PLC (England and Wales No.2366616)
> > > registered office: Dawson House, Great Sankey,
> > > Warrington, WA5 3LW.
> > > ***********************************************************
> > >
> > > *********************************************************
> > > This Week's Sponsor - RTO Software / TScale
> > > TScale increases terminal server capacity.
> > > Get 30-40% more users per server to save $$$ and time.
> > > Add users now! - not more servers. If you're using Citrix,
> > > you must learn about TScale!  Free 30-day eval:
> > > http://www.rtosoft.com/Enter.asp?ID=79
> > > **********************************************************
> > >
> > > For Archives, to Unsubscribe, Subscribe or
> > > set Digest or Vacation mode use the below link:
> > > http://thethin.net/citrixlist.cfm
> > *********************************************************
> > This Week's Sponsor - RTO Software / TScale
> > TScale increases terminal server capacity.
> > Get 30-40% more users per server to save $$$ and time.
> > Add users now! - not more servers. If you're using Citrix,
> > you must learn about TScale!  Free 30-day eval:
> > http://www.rtosoft.com/Enter.asp?ID=79
> > **********************************************************
> >
> > For Archives, to Unsubscribe, Subscribe or
> > set Digest or Vacation mode use the below link:
> > http://thethin.net/citrixlist.cfm
*********************************************************
This Week's Sponsor - RTO Software / TScale
TScale increases terminal server capacity.
Get 30-40% more users per server to save $$$ and time.
Add users now! - not more servers. If you're using Citrix,
you must learn about TScale!  Free 30-day eval:
http://www.rtosoft.com/Enter.asp?ID=79
**********************************************************

For Archives, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
http://thethin.net/citrixlist.cfm

-- No attachments (even text) are allowed --
-- Type: text/plain


*********************************************************
This Week's Sponsor - RTO Software / TScale
TScale increases terminal server capacity.
Get 30-40% more users per server to save $$$ and time.
Add users now! - not more servers. If you're using Citrix,
you must learn about TScale!  Free 30-day eval:
http://www.rtosoft.com/Enter.asp?ID=79
**********************************************************

For Archives, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
http://thethin.net/citrixlist.cfm

*********************************************************
This Week's Sponsor - RTO Software / TScale
TScale increases terminal server capacity. 
Get 30-40% more users per server to save $$$ and time. 
Add users now! - not more servers. If you're using Citrix, 
you must learn about TScale!  Free 30-day eval:
http://www.rtosoft.com/Enter.asp?ID=79
**********************************************************

For Archives, to Unsubscribe, Subscribe or 
set Digest or Vacation mode use the below link:
http://thethin.net/citrixlist.cfm

-- No attachments (even text) are allowed --
-- Type: text/plain


*********************************************************
This Week's Sponsor - RTO Software / TScale
TScale increases terminal server capacity. 
Get 30-40% more users per server to save $$$ and time. 
Add users now! - not more servers. If you're using Citrix, 
you must learn about TScale!  Free 30-day eval:
http://www.rtosoft.com/Enter.asp?ID=79
**********************************************************

For Archives, to Unsubscribe, Subscribe or 
set Digest or Vacation mode use the below link:
http://thethin.net/citrixlist.cfm

Other related posts: