Anthony- ssh is still used as a communication tunnel between client and server. For example, it is used to launch the session, set up sound, trigger mounting of local devices, that sort of thing. The only difference is that you are not proxying the ssh traffic through ssh, so you eliminate the overhead of encrypting the video data (the majority of the ssh overhead in the secure scenario) and, more importantly for performance, you are not proxying the X traffic, but rather directly talking between the applications and the xserver.
Cheers, -Gadi On Sun, 2007-06-24 at 22:12 -0500, Anthony M Simonelli wrote: > I apologize. I tried it again, this time with a fresh setup, and > everything worked perfectly. I must have setup things incorrectly on > the first attempt because your modified LDM script works beautifully. > > I am curious, is it just X that's no longer being encrypted over ssh > with the new LDM_DIRECTX option or is the entire terminal session no > longer using ssh, because I noticed that sshd is still a running > process. > > On Fri, 2007-06-22 at 17:19 -0400, Gideon Romm wrote: > > Anthony, > > > > In LTSP5, gdm is not used at all. You need not enable XDMCP in gdm or > > even have gdm installed on the server. If enabling it changed things, > > that must mean you have SCREEN_07=startx in your lts.conf. Don't do > > that. Take it out. Use ldm. Then, you localdev and everything else > > should work. > > > > -Gadi > > > > On Thu, 2007-06-21 at 21:53 -0500, Anthony M Simonelli wrote: > > > I gave this version of LDM a whirl and was pleasantly surprised. It > > > does boot quicker and, after configuring GDM for remote logins, I was > > > quickly presented with a login screen. Sound still works, but I notice > > > that the USE_XFS and LOCALDEV options in the lts.conf file do not have > > > an effect. Local devices aren't critical, but I need access to the XFS > > > server since we use IBM's iSeries Access that requires un/scalable > > > fonts. > > > > > > Am I doing something wrong? > > > > > > On Wed, 2007-06-20 at 09:34 -0500, Jim Kronebusch wrote: > > > > Hello all, I met with Gideon Romm at our North Central Linux > > > > Symposium. He has been > > > > working on modifications to the code for ldm to allow the bypass of X > > > > being encrypted > > > > over ssh. He has also added functionality to be able to use autologin. > > > > You can > > > > download the modified ldm from here: > > > > > > > > http://codebrowse.launchpad.net/~gideon/ltsp/gadi-ldm-mods-ltsp/download/gadi%40ltsp.org-20070521205254-ek710bofdpdtlwlz/x_Matt_Zimmerman_%3Cmatt.zimmerman%40canonical.com%3E_Tue_Jun__7_19%3A59%3A49_2005_32192.0/ldm > > > > > > > > Replace your current "/opt/ltsp/i386/usr/sbin/ldm" with the new file > > > > (you may want to > > > > backup your current ldm just to be safe). The in > > > > "/opt/ltsp/i386/etc/lts.conf" add the > > > > following line: > > > > > > > > LDM_DIRECTX=True > > > > > > > > You will now be able to run without X being encrypted, which in theory > > > > should allow LTSP > > > > 5 to run at the same speed as LTSP 4.2. Bootup times and logout times > > > > will still be > > > > slower, but once booted things should zoom along. So far my tests show > > > > that this works > > > > awesome! I am still waiting for my new clients to really give this a > > > > go. > > > > > > > > If you would like to use autologin features you simply need to add the > > > > following line to > > > > lts.conf: > > > > > > > > LDM_USERNAME=hostname > > > > > > > > Apparently this lets you use the same user=workstation method that > > > > worked in LTSP 4.2. > > > > You will still need to setup ssh keys OR create the same password for > > > > each user and > > > > specify LDM_PASSWORD="mypassword" (in lts.conf). You also need to > > > > specify workstation > > > > names in dhcpd.conf so that workstations do not all have the same > > > > hostname (I am not > > > > sure if this is able to be done with the /etc/hosts file as well). > > > > > > > > Anyhow this hacked ldm should allow LTSP 5 to finally be usable in > > > > larger installations > > > > instead of hanging on to LTSP 4.2. Also I guess that Scott Balneaves > > > > has rewritten some > > > > of the python startup files in C, which should clear up some boot time > > > > problems in the > > > > next Gutsy release (Scott, sorry if I butchered up what exactly you > > > > have been working on). > > > > > > > > Jim Kronebusch > > > > Cotter Tech Department > > > > 453-5188 > > > > > > > > > > > > > ------------------------------------------------------------------------- > > > This SF.net email is sponsored by DB2 Express > > > Download DB2 Express C - the FREE version of DB2 express and take > > > control of your XML. No limits. Just data. Click to get it now. > > > http://sourceforge.net/powerbar/db2/ > > > _____________________________________________________________________ > > > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > > > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > > > For additional LTSP help, try #ltsp channel on irc.freenode.net > > -- > > -------------------------------------------------------- > > Gideon Romm | Proud LTSP Developer > > [EMAIL PROTECTED] > > > > Support LTSP! Buy your hardware at: > > > > www.DisklessWorkstations.com > > www.DisklessThinClients.com > > > > (use coupon code: LTSP5P for 5% off thin clients from > > DisklessThinClients.com) > > > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 express and take > > control of your XML. No limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _____________________________________________________________________ > > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > > For additional LTSP help, try #ltsp channel on irc.freenode.net > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _____________________________________________________________________ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net -- -------------------------------------------------------- Gideon Romm | Proud LTSP Developer [EMAIL PROTECTED] Support LTSP! Buy your hardware at: www.DisklessWorkstations.com www.DisklessThinClients.com (use coupon code: LTSP5P for 5% off thin clients from DisklessThinClients.com) ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
