Connection Broker problem

Hi,

I've configured a server as connection broker for my farm consisting of 2
servers. I've run into a strange problem: After rebooting the connection
broker it load balances as expected and it reconnects users to disconnected
sessions. After a while it no longer reconnects users but simply sends users
to the server with least connections. Has anyone seen something similar and
does anyone have a solution? Windows Server 2008 R2 is used on all servers.

Thanks in advance
Morten

 

Hi!

Can you please run the script below (copy/paste and save in a vbs file)
periodically (before and after rebooting the CB server) and send us the
output?

This will help investigating this issue.

Here is the script:


'***************************************************************************
' Copyright © 2004-2005 Microsoft Corporation
'***************************************************************************
'
' WMI Script - SDDatabaseDump.vbs
' Author - GopiV
'
' This script dumps the contents (clusters and associated sessions)
' of the Session Directory database
'
'
'***************************************************************************

' **************************************************************************

' USAGE: Cscript.exe SDDatabaseDump.vbs <SBservername> <Administrator>
<Password>

' **************************************************************************

const TAB = " "
const LINESEPARATOR = "------------------------------------------------"

ON ERROR RESUME NEXT

'********************************************************************
'*
'* Function blnConnect()
'* Purpose: Connects to machine strServer.
'* Input: strServer a machine name
'* strNameSpace a namespace
'* strUserName name of the current user
'* strPassword password of the current user
'* Output: objService is returned as a service object.
'*
'********************************************************************

Function blnConnect(objService, strServer, strNameSpace, strUserName,
strPassword)

ON ERROR RESUME NEXT

Dim objLocator

blnConnect = True 'There is no error.

' Create Locator object to connect to remote CIM object manager
Set objLocator = CreateObject("WbemScripting.SWbemLocator")
if Err.Number then
Wscript.Echo "Error 0x" & CStr(Hex(Err.Number)) & " occurred in
creating a locator object."
if Err.Description <> "" then
Wscript.Echo "Error description: " & Err.Description & "."
end if
Err.Clear
blnConnect = False 'An error occurred
Exit Function
end if

' Connect to the namespace which is either local or remote
Set objService = objLocator.ConnectServer (strServer, strNameSpace,
strUserName, strPassword)
if Err.Number then
Wscript.Echo "Error 0x" & CStr(Hex(Err.Number)) & " occurred in
connecting to server " _
& strServer & "."
if Err.Description <> "" then
Wscript.Echo "Error description: " & Err.Description & "."
end if
Err.Clear
blnConnect = False 'An error occurred
end if

objService.Security_.impersonationlevel = 3

if Err.Number then
Wscript.Echo "Error 0x" & CStr(Hex(Err.Number)) & " occurred in
setting impersonation level " _
& strServer & "."
if Err.Description <> "" then
Wscript.Echo "Error description: " & Err.Description & "."
end if
Err.Clear
blnConnect = False 'An error occurred
end if

end Function

' Start of script

if Wscript.arguments.count<3 then
Wscript.echo "Script can't run without 3 arguments: ServerName
Domain\UserName Password "
Wscript.quit
end if

Dim strServer, strUserName, strPassword
Dim objService, blnResult

' Extract the command line arguments
strServer=Wscript.arguments.Item(0)
strUserName=Wscript.arguments.Item(1)
strPassword=Wscript.arguments.Item(2)

' Connect to the WMI service on the SD Server machine
blnResult = blnConnect( objService, strServer, "root/cimv2", strUserName,
strPassword )

if not blnResult then
Wscript.echo "Can not connect to the server " & strServer & " with the
given credentials."
WScript.Quit
end if

Set clusterEnumerator = objService.InstancesOf
("Win32_SessionDirectoryCluster")
if Err.Number then
Wscript.Echo "Error 0x" & CStr(Hex(Err.Number)) & " occurred"
end if

if clusterEnumerator.Count = 0 then
Wscript.Echo "No clusters found in Session Directory database on " &
strServer & "."
Wscript.Echo
Wscript.Quit
end if

for each clusterObj in clusterEnumerator
WScript.Echo LINESEPARATOR
WScript.Echo "ClusterName = " & clusterObj.ClusterName
WScript.Echo "NumberOfServers = " & clusterObj.NumberOfServers
WScript.Echo "SingleSessionMode = " & clusterObj.SingleSessionMode
Wscript.Echo

set serverEnumerator = objService.ExecQuery("Select * from
Win32_SessionDirectoryServer where ClusterName = '" & clusterObj.ClusterName
& "'")
if Err.Number then
Wscript.Echo "Error 0x" & CStr(Hex(Err.Number)) & " occurred"
end if

if serverEnumerator.Count = 0 then
Wscript.Echo "Error : No servers in cluster " &
clusterObj.ClusterName
Wscript.Echo
else
' Enumerate the servers in this cluster

for each serverObj in serverEnumerator
WScript.Echo TAB & "SERVER :"
WScript.Echo TAB & "ServerName = " & serverObj.ServerName & "
ServerSingleSessionMode = " & serverObj.SingleSessionMode & " LoadIndicator =
" & serverObj.LoadIndicator
' WScript.Echo TAB & "ServerIP = " & serverObj.ServerIPAddress
' WScript.Echo TAB & "ServerWeight = " & serverObj.ServerWeight

set sessionEnumerator = objService.ExecQuery("Select * from
Win32_SessionDirectorySession where ServerName = '" & serverObj.ServerName &
"'")

if Err.Number then
Wscript.Echo "Error 0x" & CStr(Hex(Err.Number)) & " occurred"
end if

if sessionEnumerator.Count = 0 then
WScript.Echo
WScript.Echo TAB & "No sessions on server " &
serverObj.ServerName
WScript.Echo
else

WScript.Echo TAB & "NumberOfSessions = " &
sessionEnumerator.Count
Wscript.Echo

' Enumerate the sessions on this server

for each sessionObj in sessionEnumerator
WScript.Echo TAB & TAB & "SESSION :"
WScript.Echo TAB & TAB & "UserName= " &
sessionObj.DomainName & "\" & sessionObj.UserName & TAB & "ApplicationType= "
& sessionObj.ApplicationType & TAB & "SessionState= " &
sessionObj.SessionState
WScript.Echo TAB & TAB & "CreateTime= " &
sessionObj.CreateTime & TAB & "DisconnectTime= " & sessionObj.DisconnectTime

' WScript.Echo TAB & TAB & "ServerName= " &
sessionObj.ServerName
' WScript.Echo TAB & TAB & "SessionID= " &
sessionObj.SessionID
' WScript.Echo TAB & TAB & "ServerIP= " &
sessionObj.ServerIPAddress
' WScript.Echo TAB & TAB & "TSProtocol= " &
sessionObj.TSProtocol
' WScript.Echo TAB & TAB & "ResolutionWidth= " &
sessionObj.ResolutionWidth
' WScript.Echo TAB & TAB & "ResolutionHeight= " &
sessionObj.ResolutionHeight
' WScript.Echo TAB & TAB & "ColorDepth= " &
sessionObj.ColorDepth
' WScript.Echo
WScript.Echo
next

end if ' End of sessions on this server

next

end if ' End of servers on this cluster

next

Wscript.Echo
Wscript.Echo
Wscript.Echo "Dump of SD database on " & strServer & " complete."


Thanks,
Geanina




"Morten" wrote:
<!--coloro:blue--><span style="color:blue <!--/coloro-->
> Hi,
>
> I've configured a server as connection broker for my farm consisting of 2
> servers. I've run into a strange problem: After rebooting the connection
> broker it load balances as expected and it reconnects users to disconnected
> sessions. After a while it no longer reconnects users but simply sends users
> to the server with least connections. Has anyone seen something similar and
> does anyone have a solution? Windows Server 2008 R2 is used on all servers.
>
> Thanks in advance
> Morten
>
>
> <!--colorc--><!--/colorc-->