Ubuntu Servers :: Keeping A Ssh Session Open Forever?
Mar 27, 2010
I stream my local police station dispatch on the web using an icecast/darkice configuration [URL]. The downside of using this software is that once you initiate darkice, a terminal has to be open - the process does not run in the background.
I tried placing a monitor on my server (ouch, that hurt) and keeping darkice alive that way, but my mail server kicks the process. Now, I set the KeepAlive variable to something outrageous and keep an ssh session open on my desktop box to keep the stream going. Screen does not work as Postfix boots that as well.
The following message comes up when I boot up: Logging in user Warning: Cannot open ConsoleKit session: Unable to open session: Launch helper exited with unknown return code 0. When I press OK, the system completes the start up and everything looks normal. But when I try to connect to internet, I get the following message:
KNetworkManager cannot start because the installation is misconfigured. System DBUS policy does not allow it to provide user settings; contact your system administrator or distribution. KNetworkManager will not start automatically in future. If I reboot the system, I logg in successfully. So far the problem has appeared approximately upon every second time I boot up. Rebooting the system seems to take care of it.
Don't know what info is of interest. I'm using
Opensuse 11.2 KDE 4.4.2 (Factory) After upgrade from 4.4.1 to 4.4.2 it worked fine for a week or so.
I do a clean install of slackware64 13.1 beta1 with KDE and switch default runlevel to 4 in /etc/inittab.
I try to login in kdm, I always come back to the login....
I try this with default runlevel 3 and an .xinitrc with "ck-launch-session startkde" .. works without problems, so I switch back to default runlevel 4, now i can login and only get the error "Cannot open ConsoleKit session: Unable to open session..."
I am trying to write a bash script to open 1 screen session with multiple windows... each one running a different service. Is this possible? I tried several things, and I can start up multiple sessions really easy.. but not 1 session with multiple windows...
I want this so I can attach to that session and quickly move between the different windows.
I'm looking at an rc.sysinit: # Remove stale backups rm -f /etc/mtab~ /etc/mtab~~ # Enter root, /proc and (potentially) /proc/bus/usb and devfs into mtab. mount -f / mount -f /proc mount -f /sys >/dev/null 2>&1 mount -f /dev/pts I can't figure out what those "~"'s are doing. From the comments it's keeping mtab open to write the next (how many?) commands?
Fairly new to Ubuntu server. Was curious about keeping a running system up to date. Can any harm come from running the following:
sudo apt-get update sudo apt-get upgrade
What I mean is, is it possible that doing the above could cause a perfectly healthy system to go foobar? If so, what's the best way to prepare a system for a recovery. The Server in question is a Hardy BIND server. In the past, I've seen some ugly things happen to Windows systems after running updates, so I'd like to err on the side of caution.
I am currently in a project to set up an LTSP server with 10 thin clients. I am using Ubuntu 9.10 (Karmic).
Installing server and booting clients are working fine. Now, according to the need, I have to restrict user session numbers and allow resuming previous user session.
I have achieved to do the first one, but still could not able to setup the second one. As per requirement, if some thin can have power failure, the same session should be restored back. I am confused here, if I need to focus on saving xsessions or saving gnome sessions. I am looking for a concrete solution as I am running out of time.
I've created a custom profile for the terminal, and have edited CompizConfig to make it a transparent shell, so now my background is essentially now my terminal. However, when I click "Show Desktop", it minimizes everything, including this terminal. Would I be able to edit the setting for this so it keeps the terminal up
Since doing an update (Kubuntu 10.04), this message appears when attempting to log in;
Quote:
Warning: cannot open ConsoleKit session: Unable to open session: the permission of the setuid helper is not correct.
After clicking ok on the above warning, the system logs in, but gives 2 error messages;
- removed sound devices
- KNetworkManager cannot start because the installation is misconfigured. System DBUS policy does not allow it to provide user settings. contact your system administrator or distribution. KNetworkManager will not start automatically in future.
Just installed Fedora 12 on a P4 IBM. Everything installed fine. Then, I rebooted, installed updates, and installed a few simple programs (emacs, ssh server). I rebooted since some kernel updates had been made. I can't login anymore. I get a brief message at GDM that says "unable to open session" after I enter my password. Root also doesn't work, but I figured out that root logins are disabled. I found something that recommended disabling selinux, so I reboot with selinux=0 parameter. That still didn't fix the problem, but did initiate selinux to re-label everything on the next boot.
My next thought was that maybe my password got corrupted, so I went into single usermode. I ran passwd justin, so I know that my password is correct. I still can't login via GDM or on a tty.
EDIT: I was also thinking I might need to uninstall something that I did; however, networking is disabled in single usermode, and if I init 3, then I get a login prompt that I can't open. Is there a way that I can enable root login? That might be a starting point to see if it's my user account or a general login problem.
i wanna use the x11-forwarding feature to connect me to an open session. is that possible? i have a linux-machine on which runs the jdownloader. the jdownloader is only as java-gui-only-tools available. so it runs always on a open x11-session on the linux-machine. i wanna configure this tool from everywhere. how can i make this? (if it is possible i wanna use x11-forwarding).
My server (CentOS 5.5) is a ldap client authenticate to LDAP server (Successfully authenticate) I use pam for ssh. I can ssh successfully with any users on system. But I cannot su - from ssh. It display the error: Could not open session. I look to log file and it shows: # tail -f /var/log/secure
After following a tutorial to install a pxe server for debian network install I can't log in my user session on gnome anymore
I got an error saying : /$home/.dmrc was ignored, can't save session and language the file must belong to the user and has persmission 644
I remember on my last session i got some icons on my home folder with a little lock icon on them i tried to remove them successfully using the command line but i still can't login. however i can successfully login with another user.
I'm using wmctrl on an Ubuntu machine to manage windows from a script, that I run inside a (gnu) screen.
If I start the screen session from the local machine, wmctrl works fine, including if I completely close the terminal window and issue the wmctrl commands when connecting to the screen remotely via ssh. Conversely, if I connect remotely with ssh and start a screen, wmctrl doesn't work (returns "Cannot open display") even if I attach that screen session locally from the Ubuntu Terminal.
I guess there is some hidden screen parameter that doesn't get set in a way that allows accessing the display when it's launched remotely -- any ideas what it is and how to modify it from within a remote ssh-screen session so that that the script can access the windows?
I have some typical issue while trying to connect to my root or other users from my terminal.
like su - asking for password and after that it displyed a message like $su -
Password: could not open session
I tried connect using ssh then I am getting the following $ssh root@localhost Last login: Sun Nov 1 14:13:45 2009 from localhost Connection to localhost closed.
Background: Before this happended, I was tryied modify sshd_config in /etc/ssh/ folder to allow passwords less than 2 words.
I am trying to install Fedora 14 or 15 into a 2008 R2 Hyper-V environment. I can successfully run the install and log into the system as a user. I need to install the integration components so the mouse works. However, I can't find a way to get a terminal window open so I can mount an .iso with the installers.
I am currently running Suse 11.3. I continue to get the following error when logging into the KDE login manager with my user account
"Warning: Cannot open ConsoleKit session: Unable to open session. The name org.freedesktop.ConsoleKit was not provided by any .service files."
After acknowledging the error, it resets back to the login manager screen. If I login with root, I get the same message, but it continues on and logins into the session
I have installed virtualbox on opensuse 11.2 64bit.
When I go to open a machine it says
"Failed to open a session for the virtual machine Windows XP. The virtual machine 'Windows XP' has terminated unexpectedly during startup with exit code 1."
" Result Code: NS_ERROR_FAILURE (0x80004005) Component: Machine Interface:
[Code].....
as root. Users of Ubuntu, Fedora or Mandriva should install the DKMS package first. This package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary."
So, i've rebuilded all VirtualBox dependencies with safe flags, then i've recompiled most of the sys-* packages also with safe flags. However VirtualBox still doesn't work.
UPD: virtualbox-bin-3.1.4
UPD2: 3.1.6 and ose-versions crashes with same errors
I just tried FreeNX. I work great. I am thinking about uninstalling the vino/vnc on my machine.
However, I'd like to know if FreeNX can access the session that open locally on the server. I tried session 0 and 1, none of them can access the local session.
For default vnc, the connection will let you access the local session on the server. Can FreeNX do that?
I have a question regarding runlevels, shutdown procedure and KDM. I am on a freshly installed Slackware64 13.37 multilib system. The default runlevel in /etc/inittab is set to 3: multiuser w/o X.
Now, I log in as root and issue the command:
Code:
As expected, KDM starts up, and I log in to KDE (or another WM/DE) as a normal users. When I am finished, I either issues
Code:
In Konsole or click on Shutdown in the KDE menu. The shutdown process is initiated, as expected, but then it stops, and a window alerts me, that there is a session open by user 'root'. If I click OK, the machine is finally shut down.
Now, if I interpret this correctly, the behaviour of Slackware64 13.37 has changed here, compared to 13.1. In previous versions, the root seesion was closed, when I changed the runlevel to 4 with the telinit command. Now, the session remains open, obviously.
My question is: Is this the correct behaviour, and isn't this a security whole? An unnoticed (!) open root session while I am surfing the web as an unprivileged user in KDE could be dangerous, I think...
Is it misconfiguration in my system, or is this the way it should be?
I would love to auto-start tomboy at startup. How can I do this ? [Moderator edit: fixed Subject so nobody would expect an automatic Lunch. Is that the same as a free one? ]
I hope this is the right section, it looks like though. I have a small nas ( via artigo a2000 ) with 2 sata hd 1tb each with raid 1 and lvm on top configured and working great.
sda1 and sdb1 ==> md0 raid1 for /boot sda2 and sdb2 ==> md1 raid1 for swap sda3 and sdb3 ==> md2 raid1 as physical volume then volume group and lvs on top ( / is a logial volume of these )
I wish to upgrade the current fedora 12 32bit installation I have on it doing a fresh install. But because I have a lot of data on md2 ( 600GB worth ) which I don't want to copy across somewhere else first, I need to know how ( i am pretty sure i can ) to mount md2 during the installation. This way I can use the data I already have on it.
I have two version of PHP installed on my Ubuntu Lucid 10.04 server - the default PHP 5.3.2 that comes with the distribution - and I then compiled PHP 5.2.14 to the /opt/php5.2.14 directory and it runs in Apache via FastCGI mode.The PHP 5.3.2 is working without any problem and it places all session files in the /home/session-data folder - which is set in the PHP.INI file.The PHP 5.2.14 also has the same directive set and it shows via a phpinfo() that it is set correctly:session.save_path=/home/session-dataI have ensured that all session variables/settings are the same between PHP 5.3.2 and PHP 5.2.14 - but the PHP 5.2.14 does not pay attention to the save path and is still placing the session files in the /tmp folder.Checking the session files in the /tmp folder, they are owned by www-data with 600 chmod permission settings (read/write for user, no access for group/others).
