Terminal Server on 2008 SP2 NLB connects one host and the other wont allow anyone to logon.
Hi all,
I have a terminal server farm with two hosts as part of the session directory setup.
I use NLB to load balance the two servers.
The servers OS is Server 2008 Sp2.
Beforehand it worked perfectly, users would connect to the NLB hostname TermSerfarm and then be authenticated to either one of the servers in the farm.
However this seemed to break for no apparent reason. When a user logs onto the system
they use either RDP 6.0 or a Winterm, if the session is created on Farm member
1 then they log on and everything starts as normal, however if NLB determines
to send them to the second server in the farm then they get a message saying
terminal server is not available.
I had to remove the second farm server from both the session directory and the host from NLB, so there is just one server on the farm now.
NLB is set to Unicast.
Here are some of the things i checked -
DNS is okay as the Farm name resolves.
You can log into each of the servers by hostname if you want, just not to the second farm member via NLB.
Listener permissions are set up properly on the RDP setting of the Terminal Server configuration.
All IPs ping properly and the NICs are okay. NLB is set to Unicast.
Both farm members have a production NIC and an NLB NIC these are fine as well.
Event Viewer shows nothing at all, no system errors, no connection errors, so trying
to troubleshoot this is a nightmare!
Has this happened to anyone else? Any ideas where to start?
Any help is much Appreciated.
Thanks in advance.
Hi,
Thank you for posting in Windows Server Forum.
When the Terminal Services Session Broker service starts, it creates the Session Directory Computers local group. By default, this group is not populated. You must choose the individual terminal servers or groups that you want to participate in the Terminal
Services Session Broker service, and then manually change group memberships to the Session Directory Computers group.
I would suggest you to check the configuration again for NLB with below mention link.
Network Load Balancing Step-by-Step Guide: Configuring Network Load Balancing with Terminal Services
http://technet.microsoft.com/en-us/library/cc771300(WS.10).aspx
Network Load Balancing Deployment Guide
http://technet.microsoft.com/en-us/library/cc754833(WS.10).aspx
Hope it helps!
Thanks,
Dharmesh
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