Ubuntu Servers :: Serial Ports On Client Side Ltsp Setup?
Dec 12, 2010
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.
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?
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 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 set up a Lan-to-Lan (routed) OpenVPN tunnel. For redundancy I want to set up a second VPN tunnel on a fallback gateway/firewall on the client side. Currently, both sides (server/client) know how to route packets across each others physical LAN. So no NAT is used. When the primary gateway (fw1) is connected to the VPN server all traffic runs via the fw1 tunnel. Than when the secondary gateway (fw2) connects to the VPN server and fw1 is still connected all traffic for fw1 will be delivered to fw2 and effectively destroying traffic intended for fw1. This is of course no problem if I first shutdown (fence) fw1, than set up fw2 to use the gateway IP address from fw1 and set up the VPN tunnel to the VPN server. Effectively replacing fw1 with fw2 on the client side. However, I can't seem to find a decent howto.
I am also exploring the possibility to let both tunnels active and let OpenVPN (or another tool) decide how to route packets back and forth the different LANs. A virtual IP between two gateway's both running a VPN or something similar. This would be the preferred method of course. However, I don't know how to tackle this one but I'm pretty sure there are people out there who are happy to share their 2 cents.
On my CentOS 5.2 install I've installed a dual-port serial card based on the NetMOS 9835 chipset. I've followed the serial instructions, but everything they tell me to do is already done - see setserial outputs below. I've compared these values to the lspci output (below, NetMos card is at the bottom of the output) for the card and it appears right. Problem being, I can't use the serial ports. Oh and I did use search, and looked at every 9835-related article before posting this :)
I have a bit of a dilemma. I'm attempting to use a microcontroller to send MIDI messages over a virtual serial port. I want to (eventually) read them with Mixxx. I'm using an FTDI chip, so I get a /dev/ttyUSB0. I've tried spikenzielabs' Serial-Midi program, but it doesn't see any serial ports. NOTEMIDI looks really old and won't compile on my 10.04 LTS machine.
I have a openldap server running on one machine (fedora10) and pam_ldap.so and nss_ldap.so running on the other machine.
I have added a new user to the LDAP server database, this user is not created on client machine.
1. Can i login to the client machine using this new user?
2. Now if i try logging with this new user I am getting error messages, the error messages are as follows at client side
Sep 2 10:34:36 localhost sshd: Invalid user kim from 10.254.194.148 Sep 2 10:34:36 localhost sshd: input_userauth_request: invalid user kim Sep 2 10:35:16 localhost sshd: pam_ldap: error trying to bind as user "cn=min soo,ou=people,dc=samsung,dc=com" (Invalid credentials)
I'm using NFS and I have the following problem. After ~100 days, the client and server lose connection, but the client doesn't know about this, it gives no error. The problem is that the changes on the server side aren't visible on the client side.
have been trying to setup a dual boot system with ubuntu and XP running side by side on my Thinkpad T41.tried it a few times and always causes the same problem. i have 40 gig HDD, on which i create a 13 gig NTFS partition and leave the rest as free space. then install XP on the NTFS partition. no problems.
then i boot from the ubuntu disk (9.10 Karmic) and install using the "use free space" option at the partition section. ubuntu installs ok, and boots fine from GRUB 2.0. BUT when i select the XP option from GRUB's list, it starts to boot XP, i get the standard XP loading screen for three seconds and then it crashes to a blue screen critical problem, and restarts the system. when i then boot from the xp cd and go into recovery mode CHKDSK will not recognise the disk, and DISKPART shows one HDD at 35 gig which it cannot access.
this means i cant run FIXBOOT and get my xp install running again. every time i do this process it produces the same problem. tried at first with xp installed on whole HDD, and reducing the xp partition size. killed XP. then tried ubuntu first and xp second - but this caused the same inaccessible disk problem - xp would not recognise the partitions and would not install. so i slipstreamed my XP install disk to SP2 hoping this would make it recognise the partitions, but no luck there. so had to format all and repartition the 13 gig NTFS for xp. installed xp again without difficulty but ubuntu install killed my xp in the same way.
I am trying to setup a VPN on my FC 12 box. Looks like getting openvpn to work behind NAT is as easy as just forwarding the ports. Do I need to forward any specific protocols (GRE, etc)? Also, can I do this with one Ethernet port (IE: RJ-45 jack), or do you recommend a second ethernet port? I could add in another PCI ethernet card if it makes it easier. Anyone know if a single ethernet jack will work or do I need two?
is there anyone knows how to setup and configure thin client in edubuntu 10.04?. From the beginning installation until thin client work.we have 2 set of computers. 1 computer installed edubuntu 10.04 and installed LTSP (Linux Terminal Server Project) in the OS without NIC Card. And the other computers has only NIC card.. We setup it in the bios as a "First Boot" Network Card. We connect 2 computers using "pair-to-pair connection". There and after, we restart the 2 computers. "Nothings Happened".
I've had someone approach me recently about setting up an Ubuntu server for his small business. Having never done this for a paying client before, I have absolutely no idea where to begin as far as pricing goes. Here are some of the things I've been asked to put together:
Install and configure Ubuntu Server 11.04 with: - Apache (LAMP) - Samba - SSH - Subversion - Webmin
As well as configuring mdadm RAID and setting the system up for multi-user access. For an experienced Linux user like myself, I don't believe that it will take me very long to get things up and running, but again, I have no idea where to even begin as far as pricing goes. Keep in mind that this client is a small business owner of a game development company with only 5 employees. I am told that he only has a "modest" budget to work with. Additionally, it is possible that I will be hired in to this company shortly, to help with game development and to maintain this system which I am setting up. I would like to use this opportunity to make money, of course, but I also want to be reasonable with the client so that I may be hired in to his company in the coming months for a programming job.
I just finished setting up a new computer lab at my kids school, using LTSP and 22 think clients connecting to Ubuntu.Everything is going beautifully, and I'm using static IPs and autologin so that when each computer is turned on it logs itself in with no userintervention. The problem is, when users go to the top right system menu and select "Shut Down", they are brought out to the login screen for a second and then immediately logged back in automatically to the Desktop. How should I be shutting down the thin clients?he only way to do it at the moment is to have everyone hold the power button down until the CPU shuts off, but it feels sloppy and unhealthy.
I am trying to build a file server with RAID 5 over a couple of 1TB HDDs, to serve about 10 client machines using Ubuntu Server. I already own a 22-port switch: HP ProCurve v1810G-24 Switch (J9450A), which I am assuming will do the job. And for the actual server I am thinking of buying: HP ProLiant DL120 1U. Will this hardware suffice, or am I missing something important to get the whole thing running?
I need to talk to several serial ports. I was thinking of having a bunch of USB to serial cables and then plugging all of them into a USB hub, which goes to the computer. What I want to know is, will I see each serial port as a separate thing? With 1 USB to serial cable and no hub, I see /dev/ttyUSB0. With this hub, will I see /dev/ttyUSB0, /dev/ttyUSB1, etc?
how to get USB disks/sticks to mount on the clients. Is there something with some configfile that needs to be enabled or in the setup of the default image?
Cannot even move files from the USB drive via the servers USB as it is virtual one on a ESXi host.
the school starts on monday (8 hours) and there is about 10GB files that need to put in place before that.
PS. OpenSuse 11.3 all patched with minimum XFCE desktop on the server. easy-ltsp install via 1-click install on the opensuse/kiwi-ltsp page. Server + 20 clients Everything else functions properly but no CD or USB on clients
I just bought a old xeon server and am installing ubuntu 10.10 with ltsp, i have also bought 3 thin clients to add to it, what kind of hub or switch do i need to use with it? also is it straight through or crossover cat5 cables that i need? is there any good sites that i should look at for setting this all up, my end goal is to have educational stuff on them for my kids with internet enabled only at certain times, and have movies available from the server for them to watch.
I want to setup an email client in order to send/receive emails, but since i am experiencing some issues with my ISP, i decided to setup an SMTP server with Postfix on my machine.The problem is that i can receive emails but i can not send.I read almost every thread in here refering to Postfix, but i could not find the problem on my configuration.So here it is..
Code: # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first
I am setting up my OMAP4 board. I pluged power cable and USB port.But my OMAP4 blaze does not find ttyUSB*. I tried the same OMAP4 on other Linux machine and it is connecting to /dev/ttyUSB2. Do you know any thing I need to configure on my Linux
I am about to write a program to listen and read data from /dev/ttyS0 and write the data to /dev/ttyS1 after processing. Also, the same time I need to listen to /dev/ttyS1 and write to /dev/ttyS0 if any data arrived at /dev/ttyS1.
I'm setting up an LTSP server using Ubuntu 10.4 64bit, and PXE connecting with thin clients using Atheros cards. The ltsp environment is 32bit.
Unfortunately I get an error message with "No interfaces found! Aborting..." and a kernel panic early during PXE boot.
After an enormous amount of investigation, I've narrowed it down to (probably) being the fact that the ltsp chroot environment doesn't have the correct driver for my network card (I believe it's atl1c). The correct driver IS available in Ubuntu, though, as I can successfully boot the thin client from both 64bit and 32bit live CDs and bring up the network interface.
how can I install the correct driver in the PXE environment?
I am unable to access a serial port as normal user in OS 11.2. The ownership for the port,/dev/ttyS0 belongs to root:dialout. Group dialout has RW permissions.So,I guess the user has to belong to 'dialout' group.Even after a user is included in dialout port,still the user is unable to access,"Permission is Denied".
Before OS 11.2,I used to make the users members of group "uucp" to get serial port access.I tried that also in OS 11.2,without luck.So,I have to be root to access it. This requirement itself seems to be one of the fossils of old time Linux where for normal usage of PC resources,one needed elevated privileges.I guess the trend now is to let the user do all PC work,but in a safe way.
Just loaded Open SUSE EDU L I F E 11.2.2 on a Server and like what I see. The install went well and everything came up fine. I like the look and feel of this distro. The GUI features are impressive. Internet connects via eth1 . Sound, CD/DVD works and plays ok/ , grapics all working. I have two NIC cards installed.I am preparing (learning , testing, exploring) with a number of Servers that I want to take to schools in Africa.One of the key components that I need to get up and working is the LTSP. I was delighted to see that this version includes EASY-LTSP with a KIWI component. [SUSE KIWI-LTSP] So I printed out the LTSP/Quick start/Easy-LTSP (Guide) and tried to set up LTSP on my server.I went to KIWI/Prebuild in the Easy-LTSP presentation page.A box popped up with this info: