Ubuntu Servers :: 10.04 LTSP Locks Up After 23rd Login?
Sep 3, 2010
I am currently running LTSP on Ubuntu 10.04. It is a dual gig nic setup with 16GB of ram and dual AMD quad core 2.4s. I installed all the latest updates as well as likewise-open so we can use AD authentication. When testing the configuration in the lab, I boot 32 clients that successfully reach the login screen. Here comes the interesting part, I can log in, using all unique AD accounts, up to 22 clients. When I attempt to log in to the 23rd client LTSP hangs. If I restart a client it will retrieve an IP address, but TFTP will eventually time out. All of the clients are connected to a Gigabit switch along with the server so network speeds are not an issue. When I run system monitor it only shows 3.6GB of memory in use and the processors are all under 10% utilization. I have beating my head against this issue for 2 days .
I've been asked to investigate the possibility of using LTSP in our school to provide a more "real world" programming environment to our students. We have a Windows 2003 Server domain and no plans to change it.I've set up the LTSP server, joined the domain and everything seems to be working fine, I can login to the LTSP server with a student account.
The next thing I want to achieve is give the students access to their "My Documents" folder on the Windows 2003 server. Is it possible to have a student log on to the terminal server (who has never logged in before) and have it automatically mount their share on the windows server?
Version 9.10 had been installed via the alternate CD as the LTSP Server Edition. In place upgrade to 10.4 completed normally via Update Manager. However, LTSP terminal boot now fails with error "Forbidden directory" and "Access Violation". The following was found . Ubuntu 10.4 uses tftp-hpa. Either this is a change from Ubuntu 9.10 or the default behaviour of tftp-hpa has changed. So now, the filename argument given in /etc/ltsp/dhcpd.conf must include the full pathname. The previous requirement was to exclude the chroot path. If this is documented somewhere, I missed it. And after modifying /etc/ltsp/dhcpd.conf, do not forget to restart the dhcp daemon $ sudo /etc/init.d/dhcp3-server restart
I've been working on building an LTSP server for diskless booting. I have a tftp server that's booting the system. I followed the steps on [URL] .... to build the LTSP server.
I had to make one change from the guide. I have a cisco router that's acting as the DHCP, I'm not very familiar with Cisco IOS so instead of playing with that, I decided to modify the default file on the PXE.
I commented the kernel append line and added the following instead
I'm mounting the nfs as a rw file system for now. I'm planning to make it read only once I have it working the way I want. In addition to this, I also chroot into the LTSP root and installed lightdm + mate. As I understood what I read, this would boot the environment on the diskless system. All of this seem to work correctly.
What I need to do next is to find a way to setup the LTSP clients to log in by authenticating on the active directory. I understand that the login account used by the LTSP client has to exist on the LTSP server.
I have successfully added the LTSP server as a worksation within the windows domain and I can log into domain accounts from the LTSP server but domain credentials do not work when using an LTSP client, I can only log in if I use an account that exists on the LTSP server. I wanted to know if there is a way to accomplish AD authentication.
Do I have to build an LDAP server on the LTSP server, sync accounts with the Active Directory to be able to log in with AD credentials?
I just installed Ubuntu 10.10 on an older PC along side Windows XP. Everything boots fine in Ubuntu, until I log in. At this point I just get a blank purple window. No icons or start menu or anything. I am able to log in fine in safe mode.
I got myself a HP t5000 series Thin client to use on my LTSP 10.04. I changed the Bios to boot PxE. When i restart the thin client it asks for a DHCP and finds the LTSP-DHCP server all is good. Its got a IP address ok, the boot process starts. ok I get the Splash screen for Ubuntu. and all is going well. ok I no get a login screen. All is going very well. (As normal with Ubuntu). I can login all is good the login starts and i get the start up sound.But then where normally one would expect to get a desktop, one gets a login screen. Not knowing the full boot procses im not sure where to start to look. Knowing linux there would be a log file somewhere, that stores the LTSP Terminal Bootup/login process and would tell me where its stopping/failing.
The good news is that when i boot a fat client in all works ok and i an able to get in with a desktop.
I setup Ubuntu 10.10 (edubuntu) along with ltsp. I have an environment with a windows network (192.168.1.0) and a subnet (192.168.0.0) that the new terminal server is on. Everything seemed to be connecting properly, but when I attempted to boot the first client, I get the error message: "Cannot connect to NBD server".
I want to been able to connect remotely via RDP protocol with a client (for example from work to house) and I found that I can use [URL... What packages I need to install, and how I configure it? I connect my laptop via wireless throught eth2.
In Jaunty (9.04) I've setup a small (eleven-terminal) ltsp network at the local school. It handled around 6600 working hours with ease. Now I've upgrade the server to Karmic Koala (9.10) and it just stopped working. 1) The clients have PXE NICs 2) They get the proper IPs from the DHCP server and respond appropriately to changes in the DHCP configuration files. 3) DHCP server also points the clients to filename=/ltsp/i386/pxelinux.0 4) When the clients try to download the pxelinux.0 over tftp they just timeout 5) /etc/inetd.conf has an entry like tftp dgram udp wait root /usr/sbin/in.tftpd /usr/sbin/in.tftpd -s /var/lib/tftpboot 6) The file /var/lib/tftpboot/ltsp/i386/pxelinux.0 exists on the server
I'm lost at all these configuration files and protocols.
I've just installed Ubuntu 9.10 64bit on my new server and then built a 32bit image. When I try and boot my thin clients I get the following error on VT7:
Code: mount: according to mtab, aufs is already mount on / mountall: mount / [416] terminated with status 1. mount: according to mtab, none is already mounted on /proc mountall: mount /proc [409] terminated with status 1. mount: according to mtab, none is already mounted on /sys
I've successfully built my server, and any fat or thin client that I connect to it boots wonderfully, with great response. I've gone through this exercise because we need a more efficient way of testing computers before delivery to our customers. So, I'm trying to run Passmark's BurnInTest. I've run it before with previous versions (9.something, I think) and it worked well, but I needed to build a new server so we can test more computers concurrently, so I figured I'd get the latest release.
My problem occurs when I try to run BurnInTest - it must have root access to test the local USB, parallel, and serial ports, and the optical drive. For the previous iteration I used a script that dropped into a local xterm session, su'd to a root session, and called the BiT GUI. In this attempt, the same scripts, even when I single-step them manually, results in 'authentication failure' when the su is attempted.
I have enabled the root account and created a password for it in the chroot /opt/ltsp/i386, and rebuilt the image, multiple times, no joy. Using ctrl-alt-F1 I can log in as root, and using dmesg I can see the USB device register when I connect it, so as far as I can tell the root account is alive and well, just not available in a local xterm session for some reason.
I have been at this for what seems like forever but i am getting somewhere after many errors i got dhcp3 reading the file and everything is almost there but now i got an error i cannot figure out.first my config file
HTML Code: shared-network local { subnet 192.168.0.0 netmask 255.255.255.0 {
In internets there are lot of successless stories installing ltsp on ubuntu 10.04. Most problems are in ndb, init scripts and somewhere else, which are hardly debuggable. It seems like ubuntu 10.04 has ltsp packages completely broken and abandoned. Have someone succeeded to install ltsp on 10.04 without hard brainfucking? Maybe it's better to install ltsp from scratch, or choose another distribution?
I upgraded my Edubuntu 10.10 LTSP server to 11.04 and I've lost my network. The server boots fine but none of the workstations connect. They start the boot process but hang-up as it starts to load the GUI.The screen on-which the computers hang displays Ubuntu 10.10.Do I have to manually update the LTSP image?
Just a little bit of back history here. I created this server when Red Hat 9 was the latest greatest thing and it has been running like a champ ever since. Recently, it started locking up when I would enter X11. I thought the problem might be a power supply as it was making some noise, I switched it out, got rid of the noise, but, not the lock up.I have to admit, I am not much of a tinkerer when it comes to Linux, I will install and get the things I want to work working, then leave it alone, typically it runs for years and years with no problem. Nothing has been installed or changed on this box. Absolutely everything works fine, with the exception of X11, which did work for 10 years. Now it freezes within 1-5 minutes of logging in (if I stay at the username and password screen it seems to run fine). If I run the failsafe windows manager, it seems to also run fine. If I run KDE or Gnome, the mouse will still move around the screen, but, nothing will respond.
I'm having one heck of a time getting Ubuntu to run on a Mac Mini. The OS installs flawlessly. It's after the install that the problems start. As soon as I input my username and password the Circle icon for loading appears and nothing happens beyond that point. Mind you I've installed Ubuntu at least 20 times and I'm about fed up with it.I've installed Fedora-PPC and Vine Linux. They both allowed me to login without any problems. I just want to install and run Ubuntu
Recently, ive been having this problem with ubuntu in which while im watching a movie and thus not doing anything else, everything locks up except for the sound (if i attempt to move mouse doens't work) and then it goes into the login screen. Previously, ubuntu would fade away into the login screen.
So is there any way to prevent ubuntu from going to the login screen if the user is not moving the mouse? non-fading login screen?
edit: oh and i also have this sometimes occuring problem where i type my password to login, it logs in, and then it immediately goes back to login screen. A second login works. probably not relevant
I want to install Ubuntu LTSP on top of an already existing system. However, I want to use a different DHCP and TFTP server. Do I simply just install 'ltsp-server-standalone' with apt and run 'sudo ltsp-build-client', stop the DHCP and TFTP server and stop them from starting automatically? Would I then just copy over the pxelinux.cfg/default file from /var/lib/tftpboot along with the initrd.img and vmlinuz images to the TFTP server?
Edit: Do I need to actually copy the whole /var/lib/tftpboot/ltsp directory over to the TFTP server?
I have been working/implementing LTSP based thin clients now using Ubuntu 10.04 LTS 32bit server. I intend to change the default purple Ubuntu splash. I have already removed the "quiet splash" parameters in the pxeconfig file. And it works, giving me a text boot. But what i needed was a replacement for the splash.
I have recently installed an ltsp system, client and server. Everything works except i cannot get my client side serial ports to work or register for that matter. Can anyone point me to the steps i should take to get these working.
when i want run "ltsp-build-client" command i get this error: ERROR: fc14 is unsupported i want know there is any plan for ltsp 5.2 support in fedora 14 and how i can solve this problem for use ltsp in fedora 14.
I have setup Ubuntu 9.10 ltsp server, and have the client connected with login screen. I can log on the client successfully , but I did not get to the window environment, just see a busy mouse pointer on client screen and the screen of the server is scrambled ... and not viewable. I built the image by ltsl-build-client The server is amd64 version and the client is i386 version.
I am trying to install and configure LTSP on a server for a HP thin client to boot off. The version of Ubuntu that I am using is 11.04 x86 and it is a fresh install on a dual core system with 2GB RAM. I followed a guide which comprised of these commands.
sudo apt-get install ltsp-server-standalone openssh-server sudo ltsp-build-client or if your on a 64-bit system with 32-bit machines do sudo ltsp-build-client arch i386 for editing the servers IP values use /etc/ltsp/dhcpd.conf after that you need to restart DHCP server sudo /etc/init.d/dhcp3-server restart and update sshkeys -sudo ltsp-update-sshkeys and if you updated dhcpd.conf then you need to update you image also by typing in terminal ltsp-update-image
Everything seemed to install as it should but when I try to boot from the thin client it just times out and says no DHCP or proxy invites received. I turned DHCP off on the router and even tried another router, but I still get nothing. I am at a bit of a loose end and I hope someone on here can point me in the right direction of where I am going wrong.
I've never observed this problem neither did any of my colleagues trying to SSH into the same system. If I try logging into my server using a wrong username and then press ^C to terminate or exhaust my password attempts, I am locked out for at least an hour. Is there something I can do on my end to fix this problem?
Acer 5250-BZ475 laptop, fresh install of Ubuntu 11.04. Boots up beautifully as long as an ethernet cable is plugged in. Otherwise, I get to the login screen and have just enough time to start typing in my password before the entire system hangs hard - no mouse, no keyboard, can't even get to a terminal, nothing. Have to hard power off the machine.
It seems to be a problem with the wireless card trying to initialize, but there doesn't seem to be a bios option to disable wireless on this laptop, so I'm a bit at a loss as to how to fix this problem. By the way, wireless works fine if I boot up with a cable connected - I can see all the wireless access points in my area no problem. I just can't boot without a wired connection, which makes my laptop more or less useless when I'm away from home with it.
Having several distros on my computer (including Windows), I prefer BING (BootIt NG) as an overall boot manager. This way, I just install a distro together with GRUB to its dedicated partition, and keep full control over what partitions are available/visible and bootable when family members use the computer.Yesterday, I tried to update Lucid (Ubuntu 10.04) and got a problem with the newly available GRUB (1.98-ubuntu7): it said that installing GRUB to a partition was a "BAD" idea, and, luckily, refused to update. I've noticed this behaviour during my last install of Sidux (great distro to keep track of what's happening at the KDE front, by the way). Same problem, same message. Result: no more new Sidux releases...
What's going on? Is this intended behaviour and thus making it impossible for people to manage their booting their own way? Are we talking about a bug here? There seems to be a mentioning of this behaviour on Launchpad, but it's unclear whether it's a bug or not; at least to me.
so this is really the result of another problem. There seems to be an issue with CPU spiking to 99% forever (until reboot) if I run apt-get or synaptic or update manager while an external USB drive is plugged in. Note, other USB peripherals are no problem, just an external HD.
So my work around was to eject the drive when doing apt-get or other installation work, then reattaching it to remount. Now, on to the present problem. I'm using the basic backup script (the rotating one) found in the Ubuntu Server manual. It uses tar and gzip to store a compressed version of the desired directories on my external USB. (which sits in a fire proof safe - this is for a business)
However, it seems tar and gzip which run nightly 6 days a week via cron as root, don't ever want to die, and they don't release the drive. I have to reboot the system (I can't logoff) to release the drive, unplug it, the I can do update/install work.
Of course, if apt etc. would work fine without conflicts with the external device, I'd not care about the tar/gzip problem other than it generally isn't a proper way for them to function and it chews up some CPU cycles. (they run about 0.6 and 1.7 percent respectively) I also can't kill them via kill or killall. They seem undead.
I have configured server ubuntu 11.04. Everything works fine, but there is a need for some clients to connect local hard drive. What should I do? How and what modules are added to the ltsp-image? How to register in the fstab on the client? Maybe I'm going the wrong way?
So basically what I am trying to do is install Ubuntu 10.04 on a Dell Poweredge 2600 server. Right now I dont care wither I get the server version or the desktop version, I just need to get it on their. this is what I have run into. When installing the regular Ubuntu 10.04 desktop for 32bit, the server just locks up on the very first ubuntu install screen and the keyboard lights just start blinking non stop. When I use the server version, the server get to the Detecting Network Hardware and locks up at 94% and the keyboard will also start blinking nonstop. I have looked all over for an answer to this problem and have yet to find one. This guy figured out how to make it work but he never mentioned what version he was using. [URL]..
On this server I have 6 HDs, 5 of them are RAID 0 with 1 Hot Spare. I have also tried using the ubuntu-10.04.1-alternate-i386.iso.torrent and still had the same problem. I have spent the last 3 days searching all over google and the forum to an answer but had no luck.
