[Thinlinc-technical] Is it possible to assign VSM agent based on unix group membership of user?

Peter Wirdemo peter.wirdemo at gmail.com
Thu Jan 28 22:12:31 CET 2016

In /opt/thinlinc/etc/conf.d/vsmserver.hconf :

# A list of candidate:agenthost pairs that can be used to force
# sessions for specific users or groups to be created on specific agent
# Note that only one server can be specified per candidate. No load
# balancing is in use for servers selected this way.
# If the specific server is down, no session will be created.
# If a server specified here is also listed in terminalservers,
# sessions will also be created for users or groups not listed here.
# Use of this parameter is recommended only for special circumstances,
# for example when testing new operating systems.
# Groupnames should be prepended by a '+'. Example:
# explicit_agentselection=+agentoneusers:agentone


On Thu, Jan 28, 2016 at 3:16 PM, Erik Vasaasen <erik.vasaasen at nr.no> wrote:

> Currently we're using a HA setup where users are allocated to three
> login servers, and then ssh to computing resources from there.
> Assignment of login server is based on normal load balancing of VSM agents.
> This works fine for most users, but a group here works with large
> satellite images (typically users with 34" screens, lots of pixels
> changing), and they've complained about low performance when working on
> large images. So, to alleviate this problem I've configured a separate
> thinlinc install directly on their main computing server. Skipping one
> ssh step and working directly on the same server where the thinlinc
> session is running improves performance by quite a lot (5x or so).
> Now, this group is not that large, so having a special case for them is
> fine, but I would have preferred these users to go through the VSM
> server that the other users go through, perhaps based on their unix
> group membership. E.g. "if you are one of these users you're sent to
> this server, if not you go to one of these servers".
> I can't see any way of doing this from the documentation, but perhaps
> I'm wrong - is there a way to do this?
> Erik
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