[THIN] Re: Tough One--Nfuse sites stop responding during mid- afte rnoon
- From: Mason Dively <mdively@xxxxxxxxxx>
- To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
- Date: Wed, 13 Nov 2002 14:36:11 -0600
Ron--
I'm not sure--we haven't had this happen since last Tuesday and Wednesday. I
will monitor this process should this occur again in the future (god-willing it
won't.) Our problem might have been related to things that Rose and Andrew
mentioned. This started occurring at the same time that the internally
developed software that our application servers contain was upgraded. After
the software was upgraded we began to see our application servers getting
killed by runaway processes and had as many as 5 to 7 application servers lock
up each day. Once the code was corrected for the software that our application
servers were providing, the NFuse problem mysteriously went away. It makes
sense to an extent that things would start acting hokey when a handful of
machines are unable to respond, but the whole thing with the web client popup
window not going away threw me off. It did this on both of our web servers--it
was just kinda odd.
Thanks,
Mason B. Dively MCP,CCA
Amdocs CMI Production Windows Support
-----Original Message-----
From: Ron Oglesby [mailto:roglesby@xxxxxxxxxxxx]
Sent: Wednesday, November 13, 2002 2:03 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Tough One--Nfuse sites stop responding during mid- afte
rnoon
DLLHOST.exe excuse me
Ron Oglesby
Senior Technical Architect
=20
RapidApp
Office 312.372.7188
Mobile 312.961.2380
email roglesby@xxxxxxxxxxxx
=20
-----Original Message-----
From: Ron Oglesby=20
Sent: Wednesday, November 13, 2002 2:00 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Tough One--Nfuse sites stop responding during mid-
afte rnoon
If you look in taskmgr when this happens does the hostdll.exe running
under the IWAM account eat up a bunch of processor on the server and
look like its taking some memory?
Ron Oglesby
Senior Technical Architect
=3D20
RapidApp
Office 312.372.7188
Mobile 312.961.2380
email roglesby@xxxxxxxxxxxx
=3D20
-----Original Message-----
From: Mason Dively [mailto:mdively@xxxxxxxxxx]=3D20
Sent: Wednesday, November 13, 2002 1:54 PM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: Tough One--Nfuse sites stop responding during mid-
afte rnoon
George--
Thanks for the input--I actually gave that a try but it did not restore
functionality.
Thanks,
=3D20
Mason B. Dively MCP,CCA
Amdocs CMI Production Windows Support
-----Original Message-----
From: george.wasgatt@xxxxxxxxxxxx
[mailto:george.wasgatt@xxxxxxxxxxxx]=3D20
Sent: Tuesday, November 12, 2002 7:34 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Tough One--Nfuse sites stop responding during mid-
afte rnoon
Instead of bouncing the Primary Data Collector why not just stop and
restart
the XML service ?
-----Original Message-----
From: Andrew Feringa [mailto:Andrew.Feringa@xxxxxxxxxxx]
Sent: Monday, November 11, 2002 10:11 PM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: Tough One--Nfuse sites stop responding during
mid-afte rnoon
How many web Citrix servers do you have? One of them maybe hung and =
=3D3D
will not
accept connections.
I have had a similar issue but not with Nfuse. At roughly the same time
=3D3D
each
day the farm would stop accepting connections. What it ended up being =
=3D
=3D3D
was a
corrupt server with 18 connections on it. The server would not allow =
=3D3D
anyone
to log onto it but was only a problem when all the other servers =3D3D
reached 18
users and load balancing tried to connect new users to that server.
We have 100 MF servers so it was hard to detect. I found it by doing a
Qserver in the morning to see if any stats on a server stood out.
This does not explain why a reboot of the DC temporary resolves the =
=3D3D
issue
though?
Andrew Feringa
System Administrator
CCEA (XP), MCP
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-----Original Message-----
From: Mason Dively [mailto:mdively@xxxxxxxx]=3D3D20
Sent: Thursday, 7 November 2002 23:59
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Tough One--Nfuse sites stop responding during =3D3D
mid-afternoon
Thought I would put this one out there and see if anyone has any =3D3D
ideas?we
are near the end of our rope with this one and Citrix support has been =
=3D
=3D3D
next
to worthless up to this point. =3D3D20
=3D3D20
Farm:
Win2K SP2 Active Directory Domain
Metaframe XPe FR1/SP2
3 Zones (2 production zones with 60 application servers per zone, and 1
testing/training zone with 30 application servers) (Each of the 3 zones
=3D3D
has
its own dedicated data collector)
2 Load balanced Nfuse 1.6 web servers pointed to the primary data =3D3D
collector
for zone 1 for their published application information
=3D3D20
Situation:
Our farm has been online for nearly a year and a half now and we have =
=3D
=3D3D
been
using the Nfuse implementation for just over a year. We started with =
=3D
=3D3D
Nfuse
1.51 when we originally built our farm, and used the Custom Web Site =
=3D3D
builder
that shipped with Nfuse 1.51 to build multiple sites on our Nfuse =3D3D
servers.
These websites that we created with the website builder have worked
perfectly fine since they were first created over a year ago. Just =
=3D3D
within
the past two days, each day around 2:30 in the afternoon (peak logon =
=3D3D
time
for our farm?after lunch rush), we have experienced the following =3D3D
problem.
We suddenly see the number of current web connections jump dramatically
=3D3D
up
on both of our web servers (this might be something network =3D3D
related?haven?t
pinpointed the cause here) and then both of the websites stop =3D3D
responding.
What I mean by stop responding is that when a user points their web =
=3D3D
browser
to the login page, the initial login page will load but then the window
=3D3D
that
pops up to che
ck whether the ICA client is installed on the local machine just sits =
=3D
=3D3D
there
and hangs. The ICA client popup window never closes as it normally =
=3D3D
does
when the website is working properly. If you try to close the ICA =3D3D
client
popup window and then login to the website?it just basically sits there
=3D3D
and
spins?doesn?t ever bring up an application set. The first thing we =
=3D3D
tried is
restarting IIS, but this did not change the outcome. After this we =
=3D3D
tried
rebooting our webservers (one at a time) and then trying to load the =
=3D3D
initial
login page?even with a very small amount of web connections to the web
servers the page still does not function properly. Our next step was =
=3D
=3D3D
to
bounce our primary data collector?the box that both of our webservers =
=3D
=3D3D
are
pointed to for their published application information. Once the =3D3D
primary
data collector is rebooted and comes back up, the problem seems to go =
=3D
=3D3D
away.
This is where we are stuck. Why does rebooting the data collector fix =
=3D
=3D3D
the
web servers abilit
y to display the Nfuse websites? It is very odd that the web ICA =3D3D
client
window would just stick there and not allow us to login to the page, =
=3D3D
but as
soon as we reboot the data collector the site starts functioning =3D3D
correctly.
This puppy is nasty and we obviously don?t want to deal with rebooting =
=3D
=3D3D
our
data collector every day in the middle of peak login time.
=3D3D20
Does anyone have any ideas as to what might be causing this problem? =
=3D
=3D3D
Any
help is greatly appreciated?I?m buying beers for anyone who has the fix
=3D3D
for
this one!!!
=3D3D20
By the way?don?t ever let your farm dump on you during IForum?there are
=3D3D
no
Citrix SE?s available right now!!
=3D3D20
Thanks,
=3D3D20
Mason B. Dively MCP,CCA
Amdocs CMI Production Windows Support
=3D3D20
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