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Centralis Centinel 2
Free software enabling safer reboots for XenApp/Terminal Servers.
Overview
In Citrix environments which are available to users 24 hours a
day, 7 days a week, it is often difficult for administrators to
perform regular reboots of the XenApp Servers to relieve
instability issues caused by application memory leaks.
Scheduled reboots are fine, but potentially one or more XenApp
Servers will have users logged in, and therefore can’t be safely
rebooted.
Centralis Centinel gives administrators the ability to
check prior to a reboot whether users are logged into each
Server. Only if there are no users logged into the Server will
the reboot be performed.
The application also allows a script to be run prior to the
reboot, and also for Centinel to retry after a fixed number of
times (at minute intervals) to test whether any remaining users
have logged out.
How It Works
Centralis Centinel is a pure Win32 application and
requires no additional DLL’s. It uses the Windows Terminal
Server API and can therefore be used on either Terminal Server
or XenApp Servers.
When executed, it will check the number of currently logged on
users. If no users are currently logged onto the server, the
server will be rebooted. If any users are logged onto the
Server, then the server will not be rebooted. "Console" Sessions
do NOT count as a logged-in user and will be ignored.
The different session states monitored are Active, Connected,
ConnectQuery, Shadow, Disconnected, Idle, Listen, Reset, Down
and Init. If the session type is either Idle, Listen or Down it
is ignored.
Using Centralis Centinel
Centinel should be run as a scheduled task. Simply copy
the file into a directory which is in the System Path (defined
by the PATH variable) and schedule the application to run when
you wish to reboot the server (and the most likely time when no
users are expected to be logged on). The command line arguments
for the application are shown below.
The success or failure of a reboot is reported in the NT Event
Log.
Platforms
Centralis Centinel is designed to run on Windows 2000 Server and Windows 2003 Server with Terminal Services enabled and Windows Server 2008.
Options
Centralis Centinel supports the following command line switches:
- -d
Ignore disconnected session. - -v
Verbose mode. - -l
Launch a script (e.g. .bat, .cmd, etc) file prior to rebooting a server. Centinel will wait for the script to execute before rebooting. - -r
Retries. Number of times (in minutes) to retry if users are logged in. The number of retries must be specified as there is no default setting. - -f
Force reboot. Forces all programs that are running to quit. The option to save any data that may have changed is ignored. - -?
Display command line help.
Example command line:
centinel.exe -d -l myscript.cmd -r 5
Ignore disconnected sessions. If users are connected, retry 5 times (once every minute). If all users are disconnected within the five tries, execute myscript.cmd and then reboot the server.
More Information
This product is provided free of charge, and as such does
not carry any kind of warranty. Centralis accept no responsibilty for any
loss or damage
caused by the use of this product.
Click here to download Centralis Centinel 2
