[jira] [Commented] (GUACAMOLE-791) Connection Error from Balancing Connection Group

["Nick Couchman (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GUACAMOLE-791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16834273#comment-16834273 ] 

Nick Couchman commented on GUACAMOLE-791:
-----------------------------------------

Any chance you can post Tomcat logs (catalina.out) from the failure points?

> Connection Error from Balancing Connection Group
> ------------------------------------------------
>
>                 Key: GUACAMOLE-791
>                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-791
>             Project: Guacamole
>          Issue Type: Bug
>            Reporter: Michael Barkdoll
>            Priority: Minor
>         Attachments: erro1.png, erro2.png
>
>
> I have a balancing connection group (cg1) with 2 VM's inside of it s1 and s2. I'm using three different machines (m1, m2, m3), one uses chrome the other two are firefox there is no profile sharing between the machines.
> => designates an action performed
> Scenerio 1:
> m1 => (user authenticates) test 
> m2 => (user authenticates) test2
> m3 => (user authenticates) test3
> m1 => (user) test => (user initiates rdp connnection to) cg1 => (guacamole connection established to vm) s1
> m2 => (user) test2 => (user initiates rdp connnection to) cg1 => (guacamole connection established to vm) s2
> m3 => (user) test3 => (user initiates rdp connnection to) cg1 => Expectedly fails (all vms are in use)
> m2 => (user) test2 => (logoff rdp connection) s2
> m3 => (user) test3 => (user initiates rdp connnection to) cg1 => (guacamole connection established to vm) s2
> m3 => (user) test3 => (logoff rdp connection) s2
> m2 => (user) test2 => (user initiates rdp connnection to) cg1 => (guacamole connection established to vm) s2
> Everything appears to be working properly.
> Current active sessions:
> m1 [test][s1]
> m2 [test2][s2]
> But, now if I disconnect from s1 on machine m1, then for user test behavior becomes unexpected.
> m1 => (user) test1 => (logoff rdp connection) s1
> Current active sessions:
> m2 [test2][s2]
> Current available sessions:
> [s1]
> m3 => (user) test3 => (user initiates rdp connnection to) cg1 => 
> Connection Error: This connection is currently in use, and concurrent access to this connection is not allowed. Please try again later.
> m3 => (user) test3 => (user initiates rdp connnection to) cg1 => Reconnect link (nothing, wait 15sec, nothing)
> m3 => (user) test3 => (user initiates rdp connnection to) cg1 => Click Home, Wait 15sec
> m3 => (user) test3 => (user initiates rdp connnection to) cg1 => 
> Connection Error: This connection is currently in use, and concurrent access to this connection is not allowed. Please try again later.
> m3 => (user) test3 => (logoff guacamole .war frontend via AngularJS application)
> m3 => (user authenticates) test3
> m3 => (user) test3 => (user initiates rdp connnection to) cg1 => (guacamole connection established to vm) s1
> Current active sessions:
> m2 [test2][s2]
> m3 [test3][s1]
> Now things appear to be working for user test3, since the available s1 vm is assigned upon connecting ot the connection group.
> ------------
> Scenerio 2:
> machines: m1, m2, m3
> vms: s1, s2 (in balancing connection group, cg1)
> m1 => auth test 
> m2 => auth test2
> m2 => auth test3
> m1 => user test => cg1 => s1
> m2 => user test2 => cg1 => s2
> m2 => user test2 => logoff vm s2
> m3 => user test3 => cg1 => s2
> m3 => user test3 => logoff vm s2
> m2 => user test2 => cg1 => s2
> Current active sessions:
> m1 [test][s1]
> m2 [test2][s2]
> # Logoff s1 (s2 is still active on m2)
> m1 => user test1 => logoff vm s1
> Current active sessions:
> m2 [test2][s2]
> Current available sessions:
> [s1]
> m3 => user test3 => cg1 => 
> Connection Error: This connection is currently in use, and concurrent access to this connection is not allowed. Please try again later.
> Ok, that was expected from my previous experience, but now logoff the last active session on m2:
> m2 => user test2 => logoff s2
> Current active sessions:
> none
> Current available sessions:
> [s1][s2]
> Now attempt to reconnect with m3, you'd think you'd get s1 with least number of connection balancing, but no its s2.
> Wait 15 second (for api sync?)
> m3 => user test3 => cg1 => s2
> Current active sessions:
> m3 [test3][s2]
> Current available sessions:
> [s1]
> Now attempt to connect m2,
> m2 => user test2 => cg1 =>
> Connection Error: This connection is currently in use, and concurrent access to this connection is not allowed. Please try again later.
> Attempt to connect m1,
> m1 => user test => cg1 => s1 (works)
> Current active sessions:
> m1 [test][s1]
> m3 [test3][s2]
> I have stickiness enabled on the nginx could that be related?
> https://github.com/michaelbarkdoll/guacamole-reverse-proxy-nginx/blob/master/nginx.conf



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