#1012 - Session reconnect doesn't work (x2gobroker)

X2Go Bug report logs - #1012
Session reconnect doesn't work (x2gobroker)

Reported by: Stefan Baur <X2Go-ML-1@baur-itcs.de>

Date: Tue, 22 Mar 2016 09:45:01 UTC

Severity: normal

Tags: moreinfo

Found in version 0.0.3.0

Subject: Bug#1012: [X2Go-Dev] Bug#1012: Session reconnect doesn't work (x2gobroker)
Reply-To: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>, 1012@bugs.x2go.org
Resent-From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Resent-To: x2go-dev@lists.x2go.org
Resent-CC: X2Go Developers <x2go-dev@lists.x2go.org>
Resent-Date: Tue, 22 Mar 2016 11:20:01 +0000
Resent-Message-ID: <handler.1012.B1012.145864531322565@bugs.x2go.org>
Resent-Sender: owner@bugs.x2go.org
Date: Tue, 22 Mar 2016 11:14:57 +0000
Message-ID: <20160322111457.Horde.Hg9FaccmAt5vBIUkY4EzXqq@mail.das-netzwerkteam.de>
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: Stefan Baur <X2Go-ML-1@baur-itcs.de>, 1012@bugs.x2go.org
In-Reply-To: <56F1136B.5000102@baur-itcs.de>
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Hi Stefan, ah, sorry, missed your initial post around #1012. On Di 22 Mär 2016 10:42:03 CET, Stefan Baur wrote: > package: x2gobroker > version: 0.0.3.0 > > Situation: two identical nodes, only difference is DNS name + IP > Desired result: load-balanced X2Go systems, where a suspended session > can be resumed > > Actual outcome: Each connect starts a new session, suspended sessions > are left dangling forever > > Questions: > 1) Is x2gobroker-daemon needed at all for ssh-only connections to the > broker? No. But I recommend starting with x2gobroker-daemon, because it allows much easier debugging. > 2) Did I miss any obvious steps? What were your steps? (ah... ok... posted below...) > 3) What would be the suggested path to debug this? Use http brokerage for debugging. Run x2gobroker-daemon-debug as root on the cmdline and post suspicious messages here. Where do you actually have the X2Go Broker installed? On both X2Go Servers? This is a non-recommended setup. The recommended setup is: on broker machine, several X2Go Servers or two broker machines (with DNS round robin), several X2Go Servers > A full typescript ecording of the installation process is available, > but as no command returned any error messages, let me shorten it down to > the commands that were executed: > > # commands executed on both first and second node > apt-get install x2gobroker -y > cp /etc/x2go/x2gobroker.conf /etc/x2go/x2gobroker.conf.orig > vi /etc/x2go/x2gobroker.conf # see diff below > apt-get install x2gobroker-agent -y > cp /etc/x2go/broker/x2gobroker-sessionprofiles.conf > /etc/x2go/broker/x2gobroker-sessionprofiles.conf.orig > vi /etc/x2go/broker/x2gobroker-sessionprofiles.conf # see diff below > x2gobroker-keygen > cp /var/lib/x2gobroker/.ssh/id_rsa.pub /tmp/ > cd /tmp/ > vi id_rsa.pub # added a blank and the server name to end of file > python -m SimpleHTTPServer 8081 # run temporary web server so second > node can fetch the file > # once both web servers were up, the following commands were executed > # on BOTH nodes: > x2gobroker-pubkeyauthorizer -t http://firstnode:8081/id_rsa.pub > x2gobroker-pubkeyauthorizer -t http://secondnode:8081/id_rsa.pub > # Sadly, no working session reconnect with these command line > # parameters - it always starts a new session: > x2goclient > --broker-url=ssh://accountwithapublickey@firstnode:22/usr/bin/x2gobroker > --broker-autologin > # This is using x2goclient-4.0.5.0-2015.07.31 You could play with the x2gobroker-testagent script and investigate the calls to the X2Go Server side x2gobroker-agent. You could also check if you can use the broker-autologin feature on a per session basis. x2gobroker-daemon-debug will be your friend... > # taking a closer look at > # http://wiki.x2go.org/doku.php/doc:installation:x2gobroker: > # maybe x2gobroker-daemon is missing? So ... It depends on what brokerage you want to use: x2gobroker-ssh -> SSH brokerage, x2gobroker-daemon or x2gobroker-wsgi -> http brokerage. > apt-get install x2gobroker-daemon -y # this also pulls in > x2gobroker-authservice Yes. It is required for the pam authmech inside the broker daemon. If you authenticate directly against LDAP or HTTPS, then x2gobroker-authservice is not needed. > # Sadly, no change, still no working session reconnect :-( > > # --------------------------------------------------------- > > diff -u /etc/x2go/x2gobroker.conf.orig /etc/x2go/x2gobroker.conf > --- /etc/x2go/x2gobroker.conf.orig 2016-03-19 18:39:02.034407506 +0100 > +++ /etc/x2go/x2gobroker.conf 2016-03-19 19:56:05.781729565 +0100 > @@ -241,6 +241,7 @@ > # The agent query mode can be configured on a per-broker-backend basis, the > # below value is the default. > #default-agent-query-mode=NONE > +default-agent-query-mode=SSH > > # Probe SSH port of X2Go Servers (availability check) > # > @@ -254,7 +255,7 @@ > # Per default, we set this to "true" here. The portscan feature can be > # deactivated on a per-session-profile basis (use: > broker-portscan-x2goservers = > # false in the session profile configuration). > -#default-portscan-x2goservers = true > +default-portscan-x2goservers = false > > # Use load checker for querying X2Go Servers' loads in regular intervals > # > @@ -294,13 +295,13 @@ > # o the session profile does not block queries to the load checker daemon > # on a per profile basis > # > -#default-use-load-checker = false > +default-use-load-checker = true Do you have x2gobroker-loadchecker install on the broker server? Shouldn't cause your failure, but still... > # If the x2gobroker-loadchecker daemon gets used, define here how > # many seconds to sleep between cycles of querying system load from the > # associated X2Go Servers. > # > -#load-checker-intervals = 300 > +load-checker-intervals = 300 > > > ### > @@ -345,9 +346,8 @@ > #desktop-shell = KDE > > [broker_inifile] > -#enable = true > -#session-profiles = /etc/x2go/broker/x2gobroker-sessionprofiles.conf > -#use-load-checker = false > +enable = true > +session-profiles = /etc/x2go/broker/x2gobroker-sessionprofiles.conf > > #[broker_ldap] -> MUSIC OF THE FUTURE > #enable = false > Please consider contracting me, on such a project. The X2Go Broker's code says it all. If reading the code is problematic, consider contracting me for supervision. Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/mailxchange/kronolith/fb.php?u=m.gabriel%40das-netzwerkteam.de

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X2Go Bug report logs - #1012 Session reconnect doesn't work (x2gobroker)

X2Go Bug report logs - #1012
Session reconnect doesn't work (x2gobroker)