From mpelletier at tcz.co.zw Sat May 1 06:42:27 2010 From: mpelletier at tcz.co.zw (Mathieu Pelletier) Date: Sat, 01 May 2010 08:42:27 +0200 Subject: [K12OSN] K12OSN Digest, Vol 74, Issue 15 References: Message-ID: <4BDBCD53.80006@tcz.co.zw> With respect, Peter, I think you have not understood my post. I fully understand that ltsp client applications are run on the server. This is not my problem. Perhaps restating my problem may clarify the issue. I have a server running F13 with the LTSP server setup. My chroot environment is a F12 installation. I managed this by adjusting the build client script so that it used F12 instead of F13 which is still in beta. Anyway, this created my chroot environment in /opt/ltsp/i386 as per usual. I can chroot into /opt/ltsp/i386 and run updates for F12 and install applications and the like. In fact, when my client boots the initial image it gets this information from /opt/ltsp/i386. I know this because I changed the LDM theme by replacing /opt/ltsp/i386/usr/share/ldm/themes with my own custom graphics. So now, instead of the K12Linux login screen I have our college logo and graphics. Now, when my client logs in, the environment that loads is not the chroot F12 environment, but rather the server kernel and everything else. This should be loaded from /opt/ltsp/i386, NOT the root directory. Otherwise there is little point in the chroot environment. I have seen a few responses from people that "this is the way it is supposed to work." But with due respect this does not make sense considering that the ltsp-build-client downloads an entirely new (chroot) environment in /opt/ltsp/i386 (or other architecture). Some of the applications are meant to actually run using client CPU and memory, this is the purpose of a given architecture. In fact you can even use an old PowerPC as a client, provided you have installed the appropriate client architecture (see the documentation). The fact that upon opening a terminal in my client, the user is actually shown the non chroot filesystem is problematic for this is NOT how it is designed to work. The client should be seeing the filesystem in /opt/ltsp/i386 as though it were the root system as chroot is intended to function. This is done this way for security reasons. I have created the file .hidden in the /opt/ltsp/i386 environment as well so that the user does not see directories such as bin, usr, root, and so on. This does function properly, but only when one manually logs into the chroot environment. Anyway, I think I have discovered my issue. I did not build the image with 'ltsp-update-image'. For this reason there was no image directory in /opt/ltsp/. It can take a while to build the image and I have not confirmed this was the problem yet. Thanks for the efforts to assist, though. I will respond with whether or not the 'ltsp-update-image' solved the problem. If anyone is in the know regarding this, please feel free to comment. ~Many thanks! On 04/28/2010 06:00 PM, k12osn-request wrote: > Send K12OSN mailing list submissions to > k12osn at redhat.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/k12osn > or, via email, send a message with subject or body 'help' to > k12osn-request at redhat.com > > You can reach the person managing the list at > k12osn-owner at redhat.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of K12OSN digest..." > > > Today's Topics: > > 1. users not logging into my thin client environment > (Mathieu Pelletier) > 2. Re: users not logging into my thin client environment > (Peter Scheie) > 3. Re: users not logging into my thin client environment (Eric Brown) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 28 Apr 2010 13:12:57 +0200 > From: "Mathieu Pelletier" > To:k12osn at redhat.com > Subject: [K12OSN] users not logging into my thin client environment > Message-ID:<4BD81839.5090608 at tcz.co.zw> > Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" > > So, I have successfully set up my LTSP server and the clients boot > successfully. I have even changed the default LDM theme and it looks > brilliant! But now, I have a small problem that my users upon logging > in are not in the LTSP environment (the one in /opt/ltsp/i386). They > are actually logged into the server environment. > > My server is running F13 and my thin client environment image is F12 > (since the F13 ltsp enviro wasn't building and due to stability on the > client). Anyway, everything seems to be working great on the client in > spite of this. I do, however want my users to be using the proper > environment, since my changes and customisations for that image needs to > be replicated to the client, and obviously the users do not need all the > services on the server's image. > > My question is how do I remedy this so that users login to the correct > environment. The login screen is taken from > /opt/ltsp/i386/usr/share/ldm/themes, but once the user logs in they have > the F13 background and everything. It seems to me that the solution > should be pretty easy, but I have not found much information on how to > properly create user accounts. I have the users home directory mounted > in /opt/ltsp/i386/home/username, so this part is working. > > ~Thanks for your help! > > ------------------------------------------------------------------------ > Mathieu Pelletier > Director of IT Development > Theological College of Zimbabwe > > Tel: +263 9 287032/3 Ext: 214 > mpelletier at tcz.co.zw > www.tczonline.com > Chat Google Talk: mkpelletier Skype: mathieu.pelletier > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: gtalk.png > Type: image/png > Size: 911 bytes > Desc: not available > URL: > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: skype.png > Type: image/png > Size: 3590 bytes > Desc: not available > URL: > > ------------------------------ > > Message: 2 > Date: Wed, 28 Apr 2010 08:15:18 -0500 > From: Peter Scheie > To: "Support list for open source software in schools." > > Subject: Re: [K12OSN] users not logging into my thin client > environment > Message-ID:<4BD834E6.9090608 at scheie.homedns.org> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I think you misunderstand how LTSP works. The applications that users run > actually run on the server. The client environment is only used to *display* > the applications that are running on the server. An LTSP client is sort of like > a remote console. You can designate individual applications to be run locally > on the clients, but this is not the default. If you truly want the clients to be > running stand-alone environments, you might look at DRBL (Diskless Remote Boot > Linux). But make sure your clients are up to the task. > > Peter > > > Mathieu Pelletier wrote: > >> So, I have successfully set up my LTSP server and the clients boot >> successfully. I have even changed the default LDM theme and it looks >> brilliant! But now, I have a small problem that my users upon logging in are >> not in the LTSP environment (the one in /opt/ltsp/i386). They are actually >> logged into the server environment. >> >> My server is running F13 and my thin client environment image is F12 (since the >> F13 ltsp enviro wasn't building and due to stability on the client). Anyway, >> everything seems to be working great on the client in spite of this. I do, >> however want my users to be using the proper environment, since my changes and >> customisations for that image needs to be replicated to the client, and >> obviously the users do not need all the services on the server's image. >> >> My question is how do I remedy this so that users login to the correct >> environment. The login screen is taken from >> /opt/ltsp/i386/usr/share/ldm/themes, but once the user logs in they have the F13 >> background and everything. It seems to me that the solution should be pretty >> easy, but I have not found much information on how to properly create user >> accounts. I have the users home directory mounted in >> /opt/ltsp/i386/home/username, so this part is working. >> >> ~Thanks for your help! >> >> -------------------------------------------------------------------------------- >> Mathieu Pelletier >> Director of IT Development >> Theological College of Zimbabwe >> >> Tel: +263 9 287032/3 Ext: 214 >> mpelletier at tcz.co.zw >> www.tczonline.com >> Chat Google Talk: mkpelletier Skype: mathieu.pelletier >> >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> K12OSN mailing list >> K12OSN at redhat.com >> https://www.redhat.com/mailman/listinfo/k12osn >> For more info see >> > ------------------------------ > > Message: 3 > Date: Wed, 28 Apr 2010 08:26:46 -0500 > From: Eric Brown > To: "Support list for open source software in schools." > > Subject: Re: [K12OSN] users not logging into my thin client > environment > Message-ID: > > Content-Type: text/plain; charset=ISO-8859-1 > > LTSP in the classroom also takes a shift in how a teacher restricts or > monitors what goes on in their lab. One of the beauties of the LTSP > environment is that if every student has an individual log in, they > can change their background, their home pages, add icons to the > desktop, choose their windows manager (KDE, Gnome, xfce if you've > chosen to install them). Not having to restrict this and monitor > technology actually frees an instructor up to focus on teaching > technology rather than spend time monitoring it. If a kid messes up > their Gnome configuration, delete the Gnome configuration file in > their home folder and they're fixed. > > It took me a little while to adjust to the different way of thinking, > but it was very freeing to me and my students. > > That's my opinion anyway. > > Enjoy, > Eric > > On Wed, Apr 28, 2010 at 8:15 AM, Peter Scheie wrote: > >> I think you misunderstand how LTSP works. ?The applications that users run >> actually run on the server. ?The client environment is only used to >> *display* the applications that are running on the server. An LTSP client is >> sort of like a remote console. ?You can designate individual applications to >> be run locally on the clients, but this is not the default. If you truly >> want the clients to be running stand-alone environments, you might look at >> DRBL (Diskless Remote Boot Linux). ?But make sure your clients are up to the >> task. >> >> Peter >> >> >> Mathieu Pelletier wrote: >> >>> So, I have successfully set up my LTSP server and the clients boot >>> successfully. ?I have even changed the default LDM theme and it looks >>> brilliant! ?But now, I have a small problem that my users upon logging in >>> are not in the LTSP environment (the one in /opt/ltsp/i386). ?They are >>> actually logged into the server environment. >>> My server is running F13 and my thin client environment image is F12 >>> (since the F13 ltsp enviro wasn't building and due to stability on the >>> client). ?Anyway, everything seems to be working great on the client in >>> spite of this. ?I do, however want my users to be using the proper >>> environment, since my changes and customisations for that image needs to be >>> replicated to the client, and obviously the users do not need all the >>> services on the server's image. >>> My question is how do I remedy this so that users login to the correct >>> environment. ?The login screen is taken from >>> /opt/ltsp/i386/usr/share/ldm/themes, but once the user logs in they have the >>> F13 background and everything. ?It seems to me that the solution should be >>> pretty easy, but I have not found much information on how to properly >>> ?create user accounts. ?I have the users home directory mounted in >>> /opt/ltsp/i386/home/username, so this part is working. >>> >>> ~Thanks for your help! >>> >>> >>> -------------------------------------------------------------------------------- >>> Mathieu Pelletier >>> Director of IT Development >>> Theological College of Zimbabwe >>> >>> Tel: +263 9 287032/3 ?Ext: 214 >>> mpelletier at tcz.co.zw >>> www.tczonline.com >>> Chat Google Talk: mkpelletier Skype: mathieu.pelletier >>> >>> >>> >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> K12OSN mailing list >>> K12OSN at redhat.com >>> https://www.redhat.com/mailman/listinfo/k12osn >>> For more info see >>> >> _______________________________________________ >> K12OSN mailing list >> K12OSN at redhat.com >> https://www.redhat.com/mailman/listinfo/k12osn >> For more info see >> >> > ------------------------------ > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > > End of K12OSN Digest, Vol 74, Issue 15 > ************************************** > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From burke at thealmquists.net Mon May 3 00:03:14 2010 From: burke at thealmquists.net (Almquist Burke) Date: Sun, 2 May 2010 19:03:14 -0500 Subject: [K12OSN] K12OSN Digest, Vol 74, Issue 15 In-Reply-To: <4BDBCD53.80006@tcz.co.zw> References: <4BDBCD53.80006@tcz.co.zw> Message-ID: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On May 1, 2010, at 1:42 AM, Mathieu Pelletier wrote: > With respect, Peter, I think you have not understood my post. I > fully understand that ltsp client applications are run on the > server. This is not my problem. Perhaps restating my problem may > clarify the issue. > It's not just the client applications that run on the server by default, the whole session (once you are logged in) is taking place on the server. > I have a server running F13 with the LTSP server setup. My chroot > environment is a F12 installation. I managed this by adjusting the > build client script so that it used F12 instead of F13 which is > still in beta. > > Anyway, this created my chroot environment in /opt/ltsp/i386 as > per usual. I can chroot into /opt/ltsp/i386 and run updates for > F12 and install applications and the like. In fact, when my client > boots the initial image it gets this information from /opt/ltsp/ > i386. I know this because I changed the LDM theme by replacing / > opt/ltsp/i386/usr/share/ldm/themes with my own custom graphics. So > now, instead of the K12Linux login screen I have our college logo > and graphics. > > Now, when my client logs in, the environment that loads is not the > chroot F12 environment, but rather the server kernel and everything > else. This should be loaded from /opt/ltsp/i386, NOT the root > directory. Otherwise there is little point in the chroot > environment. I have seen a few responses from people that "this is > the way it is supposed to work." But with due respect this does > not make sense considering that the ltsp-build-client downloads an > entirely new (chroot) environment in /opt/ltsp/i386 (or other > architecture). Some of the applications are meant to actually run > using client CPU and memory, this is the purpose of a given > architecture. In fact you can even use an old PowerPC as a client, > provided you have installed the appropriate client architecture > (see the documentation). LTSP only loads a minimal operating system onto it's clients. Just enough to open something akin to an RDP session on windows. Once you get logged in, you are looking at a session that is running entirely on the server. The only thing your client does is send keyboard, mouse, and other hardware input (like locally attached storage) to the server, and display the images and sound being fed to it by the server. DRBL use network booting to acquire a full OS at boot time. They don't use a remote session. All apps run locally. Setups like this reduce administrative costs, since there is no locally installed software on the client (it loads its OS from a central server each time), but requires more powerful CPU & RAM on the clients. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkveEsIACgkQxWV7OPa/g5EwrQCdHWsFmiNtkMLpITHR4A5A6VIe bsIAnRnJT1sRHjair4YpQbnIIz9n23jR =7suB -----END PGP SIGNATURE----- From robark at gmail.com Mon May 3 05:47:50 2010 From: robark at gmail.com (Robert Arkiletian) Date: Sun, 2 May 2010 22:47:50 -0700 Subject: [K12OSN] Fl_TeacherTool snapshots patch for 64 bit OS Message-ID: I just discovered vncsnapshot needs a patch to work in 64bit OS from my install docs you need vncsnapshot 1.2a source tarball from sourceforge http://sourceforge.net/projects/vncsnapshot/files/vncsnapshot/1.2a/vncsnapshot-1.2a-src.tar.gz/download Apply this patch http://sourceforge.net/tracker/?func=detail&aid=2888958&group_id=46166&atid=445280 untar the download cd to vncsnapshot source dir then patch < thepatchfile then re-compile it with make and just cp the vncsnapshot binary to /usr/bin -- Robert Arkiletian Eric Hamber Secondary, Vancouver, Canada From HBurroughs at hhprep.org Thu May 6 18:36:27 2010 From: HBurroughs at hhprep.org (Burroughs, Henry) Date: Thu, 6 May 2010 14:36:27 -0400 Subject: [K12OSN] OT: Director of Technology Position opening in Hilton Head Island, South Carolina. Message-ID: <3437EBC2F7B463439E7CD8796349DCF2010BC2F6@enterprise.hhp.hhprep.org> I apologize for cluttering the list with an job opening, but I am looking for my own replacement since I will be migrating southward (to Tampa, FL). Here is a link to the NAIS (National Association of Independent Schools) website for our position: http://careers.nais.org/jobdetail.cfm?job=3365215 We are looking for someone who is comfortable with Linux LTSP Thin-clients Windows and Mac clients Moodle Active Directory, Open Directory, and Linux cross platform authentication and interoperation Group Policy and WPKG Networking: from Wireless to wired, fiber optics and vlans Smartboards, projectors, and other related classroom technology Being the driving force in technology at the school If you are interested, please send me your resume and cover letter. Again, I apologize for the intrusion, but I know there are many capable people on this list and I want to get the right person for this job. Henry Burroughs Technology Director Hilton Head Preparatory School www.hhprep.org P.S. I'll be rejoining the list at my new school this summer! =) -------------- next part -------------- An HTML attachment was scrubbed... URL: From joeb at scesd.k12.or.us Wed May 12 00:20:56 2010 From: joeb at scesd.k12.or.us (Joe Burkleo) Date: Tue, 11 May 2010 17:20:56 -0700 Subject: [K12OSN] OT: Technology Position Coos Bay Oregon Message-ID: <4BE991F7.0F3C.0098.1@scesd.k12.or.us> Sorry about the off topic posting. We are looking for a Tech at our ESD here on the Southern Oregon Coast. http://www.scesd.k12.or.us/current%20job%20postings/09-10-25%20Technology%20Technician%20III.pdf Thanks, Joe From mpelletier at tcz.co.zw Thu May 13 08:24:43 2010 From: mpelletier at tcz.co.zw (Mathieu Pelletier) Date: Thu, 13 May 2010 10:24:43 +0200 Subject: [K12OSN] Clients freezing, server losing network References: Message-ID: <4BEBB74B.5060503@tcz.co.zw> Greetings Everyone, I am having a problem with my Fedora 13 server and LTSP clients. My server is an AMD Athalon X2 Dual core, with 8 gig memory, 1 terabyte striped raid array, and two ethernet cards (1 for clients, and 1 for rest of the network; server is also network dhcp server). My switches, unfortunately are only 10/100 until I can upgrade them. I am running around 25 clients which all seem to run without issues. The clients (p4's with about 128mb memory) are running firefox and openoffice using ltsp-localapps. The only exception is that every now and again, the clients will freeze. On the server everything appears okay, i.e. not frozen or under extreme load (the load average is somewhere around 0.42 or so). However it seems like both network cards (on the server) lose their connection for about ten minutes. I cannot ping my other server or any other computer for that matter. Even if /etc/init.d/network restart or ifconfig ethX down/up the cards still do not acquire a network connection. After about ten minutes the network returns and the clients unfreeze. I was wondering if maybe there is a power manager app turning off the network cards on the server, but I can't seem to determine if this is the cause or not. Does anyone have any ideas on where I should start looking? I have run dmesg | grep error, etc but I cannot see anything that begins to explain my problem. Any help would be greatly appreciated. ~Cheers! ------------------------------------------------------------------------ Mathieu Pelletier Biblical Studies Department Theological College of Zimbabwe Tel: +263 9 287032/3 Ext: 214 mpelletier at tcz.co.zw www.tczonline.com Chat Google Talk: mkpelletier Skype: mathieu.pelletier On 05/12/2010 06:00 PM, k12osn-request wrote: > Send K12OSN mailing list submissions to > k12osn at redhat.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/k12osn > or, via email, send a message with subject or body 'help' to > k12osn-request at redhat.com > > You can reach the person managing the list at > k12osn-owner at redhat.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of K12OSN digest..." > > > Today's Topics: > > 1. OT: Technology Position Coos Bay Oregon (Joe Burkleo) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 11 May 2010 17:20:56 -0700 > From: "Joe Burkleo" > To: > Subject: [K12OSN] OT: Technology Position Coos Bay Oregon > Message-ID:<4BE991F7.0F3C.0098.1 at scesd.k12.or.us> > Content-Type: text/plain; charset=US-ASCII > > Sorry about the off topic posting. > > We are looking for a Tech at our ESD here on the Southern Oregon Coast. > > http://www.scesd.k12.or.us/current%20job%20postings/09-10-25%20Technology%20Technician%20III.pdf > > Thanks, > Joe > > > > > ------------------------------ > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > > End of K12OSN Digest, Vol 75, Issue 4 > ************************************* > > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: gtalk.png Type: image/png Size: 911 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: skype.png Type: image/png Size: 3590 bytes Desc: not available URL: From william at fragakis.com Fri May 14 15:22:43 2010 From: william at fragakis.com (William Fragakis) Date: Fri, 14 May 2010 11:22:43 -0400 Subject: [K12OSN] Clients freezing, server losing network (Mathieu Pelletier) In-Reply-To: References: Message-ID: <1273850563.11510.6.camel@localhost.localdomain> Your network is simply saturating. When I first set up a K12ltsp system, we would saturate 10/100 at anything over 5 clients on a server using anything that was graphically intense (Flash, Tux Math, etc.). The symptoms were exactly as you described. The packets start colliding and things go downhill quickly. Now, at home, using an Athlon X2 and just a couple of Atom clients and integrated intel video, I see a big difference in full screen youtube videos going from 10/100 to gigabit . I've gone from maybe 1-2 fps to 8-10 fps. Even though it's a small network, for grins, I decided to see if upgrading to gigabit would make a difference. I was surprised how much a difference it made. Moral of the story: You can't have too much bandwidth between the server and the clients. Regards, William > Message: 1 > Date: Thu, 13 May 2010 10:24:43 +0200 > From: "Mathieu Pelletier" > To: k12osn at redhat.com > Subject: [K12OSN] Clients freezing, server losing network > Message-ID: <4BEBB74B.5060503 at tcz.co.zw> > Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" > > Greetings Everyone, > > I am having a problem with my Fedora 13 server and LTSP clients. My > server is an AMD Athalon X2 Dual core, with 8 gig memory, 1 terabyte > striped raid array, and two ethernet cards (1 for clients, and 1 for > rest of the network; server is also network dhcp server). My switches, > unfortunately are only 10/100 until I can upgrade them. I am running > around 25 clients which all seem to run without issues. The clients > (p4's with about 128mb memory) are running firefox and openoffice using > ltsp-localapps. The only exception is that every now and again, the > clients will freeze. On the server everything appears okay, i.e. not > frozen or under extreme load (the load average is somewhere around 0.42 > or so). However it seems like both network cards (on the server) lose > their connection for about ten minutes. I cannot ping my other server > or any other computer for that matter. Even if /etc/init.d/network > restart or ifconfig ethX down/up the cards still do not acquire a > network connection. After about ten minutes the network returns and the > clients unfreeze. I was wondering if maybe there is a power manager app > turning off the network cards on the server, but I can't seem to > determine if this is the cause or not. > > Does anyone have any ideas on where I should start looking? I have run > dmesg | grep error, etc but I cannot see anything that begins to explain > my problem. Any help would be greatly appreciated. > > ~Cheers! > > ------------------------------------------------------------------------ > Mathieu Pelletier > Biblical Studies Department > Theological College of Zimbabwe > > Tel: +263 9 287032/3 Ext: 214 > mpelletier at tcz.co.zw > www.tczonline.com > Chat Google Talk: mkpelletier Skype: mathieu.pelletier > > > On 05/12/2010 06:00 PM, k12osn-request wrote: > > Send K12OSN mailing list submissions to > > k12osn at redhat.com > > > > To subscribe or unsubscribe via the World Wide Web, visit > > https://www.redhat.com/mailman/listinfo/k12osn > > or, via email, send a message with subject or body 'help' to > > k12osn-request at redhat.com > > > > You can reach the person managing the list at > > k12osn-owner at redhat.com > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of K12OSN digest..." > > > > > > Today's Topics: > > > > 1. OT: Technology Position Coos Bay Oregon (Joe Burkleo) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Tue, 11 May 2010 17:20:56 -0700 > > From: "Joe Burkleo" > > To: > > Subject: [K12OSN] OT: Technology Position Coos Bay Oregon > > Message-ID:<4BE991F7.0F3C.0098.1 at scesd.k12.or.us> > > Content-Type: text/plain; charset=US-ASCII > > > > Sorry about the off topic posting. > > > > We are looking for a Tech at our ESD here on the Southern Oregon Coast. > > > > http://www.scesd.k12.or.us/current%20job%20postings/09-10-25%20Technology%20Technician%20III.pdf > > > > Thanks, > > Joe > > > > > > > > > > ------------------------------ > > > > _______________________________________________ > > K12OSN mailing list > > K12OSN at redhat.com > > https://www.redhat.com/mailman/listinfo/k12osn > > > > End of K12OSN Digest, Vol 75, Issue 4 > > ************************************* > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: gtalk.png > Type: image/png > Size: 911 bytes > Desc: not available > URL: > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: skype.png > Type: image/png > Size: 3590 bytes > Desc: not available > URL: > > ------------------------------ > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > > End of K12OSN Digest, Vol 75, Issue 5 > ************************************* From mpelletier at tcz.co.zw Fri May 14 21:24:03 2010 From: mpelletier at tcz.co.zw (Mathieu Pelletier) Date: Fri, 14 May 2010 23:24:03 +0200 Subject: [K12OSN] Clients freezing References: Message-ID: <4BEDBF73.2000604@tcz.co.zw> Thanks for this confirmation, William. I had begun to suspect that this was the problem and I have already planned to replace the switches due to some faulty ports (thanks to a lightning strike). Anyway, can you confirm that a 10/100 connection on the client should be enough as long as the server is using a gigabit NIC? The server already has the necessary NIC, but the 10/100 switches were purchased for a steal a little while ago before we went to thin clients. Thanks again... This is a relief knowing that it is not a problem with my configuration files. Are there any special configuration tricks I can employ in the interim that might lessen the saturation? I am already running Firefox and OpenOffice as local apps. ~Cheers, ------------------------------------------------------------------------ Mathieu Pelletier Biblical Studies Department Theological College of Zimbabwe Tel: +263 9 287032/3 Ext: 214 mpelletier at tcz.co.zw www.tczonline.com Chat Google Talk: mkpelletier Skype: mathieu.pelletier On 05/14/2010 06:00 PM, k12osn-request wrote: > Send K12OSN mailing list submissions to > k12osn at redhat.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/k12osn > or, via email, send a message with subject or body 'help' to > k12osn-request at redhat.com > > You can reach the person managing the list at > k12osn-owner at redhat.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of K12OSN digest..." > > > Today's Topics: > > 1. Re: Clients freezing, server losing network (Mathieu > Pelletier) (William Fragakis) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 14 May 2010 11:22:43 -0400 > From: William Fragakis > To: k12osn at redhat.com > Subject: Re: [K12OSN] Clients freezing, server losing network (Mathieu > Pelletier) > Message-ID:<1273850563.11510.6.camel at localhost.localdomain> > Content-Type: text/plain; charset="UTF-8" > > Your network is simply saturating. When I first set up a K12ltsp > system, we would saturate 10/100 at anything over 5 clients on a server > using anything that was graphically intense (Flash, Tux Math, etc.). The > symptoms were exactly as you described. The packets start colliding and > things go downhill quickly. > > Now, at home, using an Athlon X2 and just a couple of Atom clients and > integrated intel video, I see a big difference in full screen youtube > videos going from 10/100 to gigabit . I've gone from maybe 1-2 fps to > 8-10 fps. Even though it's a small network, for grins, I decided to see > if upgrading to gigabit would make a difference. I was surprised how > much a difference it made. > > Moral of the story: You can't have too much bandwidth between the server > and the clients. > > Regards, > William > > > > > > > >> Message: 1 >> Date: Thu, 13 May 2010 10:24:43 +0200 >> From: "Mathieu Pelletier" >> To: k12osn at redhat.com >> Subject: [K12OSN] Clients freezing, server losing network >> Message-ID:<4BEBB74B.5060503 at tcz.co.zw> >> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" >> >> Greetings Everyone, >> >> I am having a problem with my Fedora 13 server and LTSP clients. My >> server is an AMD Athalon X2 Dual core, with 8 gig memory, 1 terabyte >> striped raid array, and two ethernet cards (1 for clients, and 1 for >> rest of the network; server is also network dhcp server). My switches, >> unfortunately are only 10/100 until I can upgrade them. I am running >> around 25 clients which all seem to run without issues. The clients >> (p4's with about 128mb memory) are running firefox and openoffice using >> ltsp-localapps. The only exception is that every now and again, the >> clients will freeze. On the server everything appears okay, i.e. not >> frozen or under extreme load (the load average is somewhere around 0.42 >> or so). However it seems like both network cards (on the server) lose >> their connection for about ten minutes. I cannot ping my other server >> or any other computer for that matter. Even if /etc/init.d/network >> restart or ifconfig ethX down/up the cards still do not acquire a >> network connection. After about ten minutes the network returns and the >> clients unfreeze. I was wondering if maybe there is a power manager app >> turning off the network cards on the server, but I can't seem to >> determine if this is the cause or not. >> >> Does anyone have any ideas on where I should start looking? I have run >> dmesg | grep error, etc but I cannot see anything that begins to explain >> my problem. Any help would be greatly appreciated. >> >> ~Cheers! >> >> ------------------------------------------------------------------------ >> Mathieu Pelletier >> Biblical Studies Department >> Theological College of Zimbabwe >> >> Tel: +263 9 287032/3 Ext: 214 >> mpelletier at tcz.co.zw >> www.tczonline.com >> Chat Google Talk: mkpelletier Skype: mathieu.pelletier >> >> >> On 05/12/2010 06:00 PM, k12osn-request wrote: >> >>> Send K12OSN mailing list submissions to >>> k12osn at redhat.com >>> >>> To subscribe or unsubscribe via the World Wide Web, visit >>> https://www.redhat.com/mailman/listinfo/k12osn >>> or, via email, send a message with subject or body 'help' to >>> k12osn-request at redhat.com >>> >>> You can reach the person managing the list at >>> k12osn-owner at redhat.com >>> >>> When replying, please edit your Subject line so it is more specific >>> than "Re: Contents of K12OSN digest..." >>> >>> >>> Today's Topics: >>> >>> 1. OT: Technology Position Coos Bay Oregon (Joe Burkleo) >>> >>> >>> ---------------------------------------------------------------------- >>> >>> Message: 1 >>> Date: Tue, 11 May 2010 17:20:56 -0700 >>> From: "Joe Burkleo" >>> To: >>> Subject: [K12OSN] OT: Technology Position Coos Bay Oregon >>> Message-ID:<4BE991F7.0F3C.0098.1 at scesd.k12.or.us> >>> Content-Type: text/plain; charset=US-ASCII >>> >>> Sorry about the off topic posting. >>> >>> We are looking for a Tech at our ESD here on the Southern Oregon Coast. >>> >>> http://www.scesd.k12.or.us/current%20job%20postings/09-10-25%20Technology%20Technician%20III.pdf >>> >>> Thanks, >>> Joe >>> >>> >>> >>> >>> ------------------------------ >>> >>> _______________________________________________ >>> K12OSN mailing list >>> K12OSN at redhat.com >>> https://www.redhat.com/mailman/listinfo/k12osn >>> >>> End of K12OSN Digest, Vol 75, Issue 4 >>> ************************************* >>> >>> >>> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: gtalk.png >> Type: image/png >> Size: 911 bytes >> Desc: not available >> URL: >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: skype.png >> Type: image/png >> Size: 3590 bytes >> Desc: not available >> URL: >> >> ------------------------------ >> >> _______________________________________________ >> K12OSN mailing list >> K12OSN at redhat.com >> https://www.redhat.com/mailman/listinfo/k12osn >> >> End of K12OSN Digest, Vol 75, Issue 5 >> ************************************* >> > > > > ------------------------------ > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > > End of K12OSN Digest, Vol 75, Issue 6 > ************************************* > > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: gtalk.png Type: image/png Size: 911 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: skype.png Type: image/png Size: 3590 bytes Desc: not available URL: From burke at thealmquists.net Sat May 15 05:03:56 2010 From: burke at thealmquists.net (Almquist Burke) Date: Sat, 15 May 2010 00:03:56 -0500 Subject: [K12OSN] Clients freezing In-Reply-To: <4BEDBF73.2000604@tcz.co.zw> References: <4BEDBF73.2000604@tcz.co.zw> Message-ID: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On May 14, 2010, at 4:24 PM, Mathieu Pelletier wrote: > Anyway, can you confirm that a 10/100 connection on the client > should be enough as long as the server is using a gigabit NIC? 100 mbits is just fine on the clients. Back in the old days, you could even get by with 10, but then you had some clients running telnet apps and much lower screen resolutions and color depths. It's that uplink on the switch to the server that really need gigabit (some people even trunk two gigabit links together if they have a super beefy server and a whole lot of clients) > Thanks again... This is a relief knowing that it is not a problem > with my configuration files. Are there any special configuration > tricks I can employ in the interim that might lessen the > saturation? I am already running Firefox and OpenOffice as local > apps. The biggest thing to do is to lower the resolution and/or color depth on the clients. I'd make sure the client's aren't using more than 16 bit color first. They if you still need to, you can lower the resolution (this works better on CRTs than it does on LCDs since LCDs have a "native resolution" that things look best at, whereas CRT monitors are a little more graceful at scaling downward (of course they use more power too). You should be able to set these settings in the lts.conf file, if my memory is correct. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkvuKzwACgkQxWV7OPa/g5GAAgCfYwH0/HECyzDxe+jxTg0u4cEN N9gAniE/H7wz2ViM8rKpAoCuhbEAzYZ6 =OX9u -----END PGP SIGNATURE----- From mpelletier at tcz.co.zw Sat May 15 18:07:01 2010 From: mpelletier at tcz.co.zw (Mathieu Pelletier) Date: Sat, 15 May 2010 20:07:01 +0200 Subject: [K12OSN] K12OSN Digest, Vol 75, Issue 7 References: Message-ID: <4BEEE2C5.3050101@tcz.co.zw> Thanks for the pointers, Almquist. I have turned down the resolution to 16, though I may go lower as a stop-gap measure until I get my new switches. My setup is a mixed environment where my server is a dhcp server for both my larger network and for my ltsp clients, thus I have two nics. One of the nics I have designated to serve the clients and the other to server the rest of the network. I might actually pop in a third gigabit card as you suggested, but I am not sure how to "trunk" the two cards together as you mentioned. Do you have any instructions on how to do this, or should I just 'google' it? ~Cheers, ------------------------------------------------------------------------ Mathieu Pelletier Biblical Studies Department Theological College of Zimbabwe Tel: +263 9 287032/3 Ext: 214 mpelletier at tcz.co.zw www.tczonline.com Chat Google Talk: mkpelletier Skype: mathieu.pelletier On 05/15/2010 06:00 PM, k12osn-request wrote: > Send K12OSN mailing list submissions to > k12osn at redhat.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/k12osn > or, via email, send a message with subject or body 'help' to > k12osn-request at redhat.com > > You can reach the person managing the list at > k12osn-owner at redhat.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of K12OSN digest..." > > > Today's Topics: > > 1. Re: Clients freezing (Mathieu Pelletier) > 2. Re: Clients freezing (Almquist Burke) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 14 May 2010 23:24:03 +0200 > From: "Mathieu Pelletier" > To: k12osn at redhat.com > Subject: Re: [K12OSN] Clients freezing > Message-ID:<4BEDBF73.2000604 at tcz.co.zw> > Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" > > Thanks for this confirmation, William. I had begun to suspect that this > was the problem and I have already planned to replace the switches due > to some faulty ports (thanks to a lightning strike). Anyway, can you > confirm that a 10/100 connection on the client should be enough as long > as the server is using a gigabit NIC? The server already has the > necessary NIC, but the 10/100 switches were purchased for a steal a > little while ago before we went to thin clients. > > Thanks again... This is a relief knowing that it is not a problem with > my configuration files. Are there any special configuration tricks I > can employ in the interim that might lessen the saturation? I am > already running Firefox and OpenOffice as local apps. > > ~Cheers, > > ------------------------------------------------------------------------ > Mathieu Pelletier > Biblical Studies Department > Theological College of Zimbabwe > > Tel: +263 9 287032/3 Ext: 214 > mpelletier at tcz.co.zw > www.tczonline.com > Chat Google Talk: mkpelletier Skype: mathieu.pelletier > > > On 05/14/2010 06:00 PM, k12osn-request wrote: > >> Send K12OSN mailing list submissions to >> k12osn at redhat.com >> >> To subscribe or unsubscribe via the World Wide Web, visit >> https://www.redhat.com/mailman/listinfo/k12osn >> or, via email, send a message with subject or body 'help' to >> k12osn-request at redhat.com >> >> You can reach the person managing the list at >> k12osn-owner at redhat.com >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of K12OSN digest..." >> >> >> Today's Topics: >> >> 1. Re: Clients freezing, server losing network (Mathieu >> Pelletier) (William Fragakis) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Fri, 14 May 2010 11:22:43 -0400 >> From: William Fragakis >> To: k12osn at redhat.com >> Subject: Re: [K12OSN] Clients freezing, server losing network (Mathieu >> Pelletier) >> Message-ID:<1273850563.11510.6.camel at localhost.localdomain> >> Content-Type: text/plain; charset="UTF-8" >> >> Your network is simply saturating. When I first set up a K12ltsp >> system, we would saturate 10/100 at anything over 5 clients on a server >> using anything that was graphically intense (Flash, Tux Math, etc.). The >> symptoms were exactly as you described. The packets start colliding and >> things go downhill quickly. >> >> Now, at home, using an Athlon X2 and just a couple of Atom clients and >> integrated intel video, I see a big difference in full screen youtube >> videos going from 10/100 to gigabit . I've gone from maybe 1-2 fps to >> 8-10 fps. Even though it's a small network, for grins, I decided to see >> if upgrading to gigabit would make a difference. I was surprised how >> much a difference it made. >> >> Moral of the story: You can't have too much bandwidth between the server >> and the clients. >> >> Regards, >> William >> >> >> >> >> >> >> >> >>> Message: 1 >>> Date: Thu, 13 May 2010 10:24:43 +0200 >>> From: "Mathieu Pelletier" >>> To: k12osn at redhat.com >>> Subject: [K12OSN] Clients freezing, server losing network >>> Message-ID:<4BEBB74B.5060503 at tcz.co.zw> >>> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" >>> >>> Greetings Everyone, >>> >>> I am having a problem with my Fedora 13 server and LTSP clients. My >>> server is an AMD Athalon X2 Dual core, with 8 gig memory, 1 terabyte >>> striped raid array, and two ethernet cards (1 for clients, and 1 for >>> rest of the network; server is also network dhcp server). My switches, >>> unfortunately are only 10/100 until I can upgrade them. I am running >>> around 25 clients which all seem to run without issues. The clients >>> (p4's with about 128mb memory) are running firefox and openoffice using >>> ltsp-localapps. The only exception is that every now and again, the >>> clients will freeze. On the server everything appears okay, i.e. not >>> frozen or under extreme load (the load average is somewhere around 0.42 >>> or so). However it seems like both network cards (on the server) lose >>> their connection for about ten minutes. I cannot ping my other server >>> or any other computer for that matter. Even if /etc/init.d/network >>> restart or ifconfig ethX down/up the cards still do not acquire a >>> network connection. After about ten minutes the network returns and the >>> clients unfreeze. I was wondering if maybe there is a power manager app >>> turning off the network cards on the server, but I can't seem to >>> determine if this is the cause or not. >>> >>> Does anyone have any ideas on where I should start looking? I have run >>> dmesg | grep error, etc but I cannot see anything that begins to explain >>> my problem. Any help would be greatly appreciated. >>> >>> ~Cheers! >>> >>> ------------------------------------------------------------------------ >>> Mathieu Pelletier >>> Biblical Studies Department >>> Theological College of Zimbabwe >>> >>> Tel: +263 9 287032/3 Ext: 214 >>> mpelletier at tcz.co.zw >>> www.tczonline.com >>> Chat Google Talk: mkpelletier Skype: mathieu.pelletier >>> >>> >>> On 05/12/2010 06:00 PM, k12osn-request wrote: >>> >>> >>>> Send K12OSN mailing list submissions to >>>> k12osn at redhat.com >>>> >>>> To subscribe or unsubscribe via the World Wide Web, visit >>>> https://www.redhat.com/mailman/listinfo/k12osn >>>> or, via email, send a message with subject or body 'help' to >>>> k12osn-request at redhat.com >>>> >>>> You can reach the person managing the list at >>>> k12osn-owner at redhat.com >>>> >>>> When replying, please edit your Subject line so it is more specific >>>> than "Re: Contents of K12OSN digest..." >>>> >>>> >>>> Today's Topics: >>>> >>>> 1. OT: Technology Position Coos Bay Oregon (Joe Burkleo) >>>> >>>> >>>> ---------------------------------------------------------------------- >>>> >>>> Message: 1 >>>> Date: Tue, 11 May 2010 17:20:56 -0700 >>>> From: "Joe Burkleo" >>>> To: >>>> Subject: [K12OSN] OT: Technology Position Coos Bay Oregon >>>> Message-ID:<4BE991F7.0F3C.0098.1 at scesd.k12.or.us> >>>> Content-Type: text/plain; charset=US-ASCII >>>> >>>> Sorry about the off topic posting. >>>> >>>> We are looking for a Tech at our ESD here on the Southern Oregon Coast. >>>> >>>> http://www.scesd.k12.or.us/current%20job%20postings/09-10-25%20Technology%20Technician%20III.pdf >>>> >>>> Thanks, >>>> Joe >>>> >>>> >>>> >>>> >>>> ------------------------------ >>>> >>>> _______________________________________________ >>>> K12OSN mailing list >>>> K12OSN at redhat.com >>>> https://www.redhat.com/mailman/listinfo/k12osn >>>> >>>> End of K12OSN Digest, Vol 75, Issue 4 >>>> ************************************* >>>> >>>> >>>> >>>> >>> -------------- next part -------------- >>> An HTML attachment was scrubbed... >>> URL: >>> -------------- next part -------------- >>> A non-text attachment was scrubbed... >>> Name: gtalk.png >>> Type: image/png >>> Size: 911 bytes >>> Desc: not available >>> URL: >>> -------------- next part -------------- >>> A non-text attachment was scrubbed... >>> Name: skype.png >>> Type: image/png >>> Size: 3590 bytes >>> Desc: not available >>> URL: >>> >>> ------------------------------ >>> >>> _______________________________________________ >>> K12OSN mailing list >>> K12OSN at redhat.com >>> https://www.redhat.com/mailman/listinfo/k12osn >>> >>> End of K12OSN Digest, Vol 75, Issue 5 >>> ************************************* >>> >>> >> >> >> ------------------------------ >> >> _______________________________________________ >> K12OSN mailing list >> K12OSN at redhat.com >> https://www.redhat.com/mailman/listinfo/k12osn >> >> End of K12OSN Digest, Vol 75, Issue 6 >> ************************************* >> >> >> > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: gtalk.png > Type: image/png > Size: 911 bytes > Desc: not available > URL: > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: skype.png > Type: image/png > Size: 3590 bytes > Desc: not available > URL: > > ------------------------------ > > Message: 2 > Date: Sat, 15 May 2010 00:03:56 -0500 > From: Almquist Burke > To: "Support list for open source software in schools." > > Subject: Re: [K12OSN] Clients freezing > Message-ID: > Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > On May 14, 2010, at 4:24 PM, Mathieu Pelletier wrote: > >> Anyway, can you confirm that a 10/100 connection on the client >> should be enough as long as the server is using a gigabit NIC? >> > 100 mbits is just fine on the clients. Back in the old days, you > could even get by with 10, but then you had some clients running > telnet apps and much lower screen resolutions and color depths. It's > that uplink on the switch to the server that really need gigabit > (some people even trunk two gigabit links together if they have a > super beefy server and a whole lot of clients) > > > >> Thanks again... This is a relief knowing that it is not a problem >> with my configuration files. Are there any special configuration >> tricks I can employ in the interim that might lessen the >> saturation? I am already running Firefox and OpenOffice as local >> apps. >> > The biggest thing to do is to lower the resolution and/or color depth > on the clients. I'd make sure the client's aren't using more than 16 > bit color first. They if you still need to, you can lower the > resolution (this works better on CRTs than it does on LCDs since LCDs > have a "native resolution" that things look best at, whereas CRT > monitors are a little more graceful at scaling downward (of course > they use more power too). You should be able to set these settings in > the lts.conf file, if my memory is correct. > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (Darwin) > > iEYEARECAAYFAkvuKzwACgkQxWV7OPa/g5GAAgCfYwH0/HECyzDxe+jxTg0u4cEN > N9gAniE/H7wz2ViM8rKpAoCuhbEAzYZ6 > =OX9u > -----END PGP SIGNATURE----- > > > > ------------------------------ > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > > End of K12OSN Digest, Vol 75, Issue 7 > ************************************* > > -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: gtalk.png Type: image/png Size: 911 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: skype.png Type: image/png Size: 3590 bytes Desc: not available URL: From burke at thealmquists.net Sun May 16 00:39:56 2010 From: burke at thealmquists.net (Burke Almquist) Date: Sat, 15 May 2010 19:39:56 -0500 Subject: [K12OSN] K12OSN Digest, Vol 75, Issue 7 In-Reply-To: <4BEEE2C5.3050101@tcz.co.zw> References: <4BEEE2C5.3050101@tcz.co.zw> Message-ID: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On May 15, 2010, at 1:07 PM, Mathieu Pelletier wrote: > Thanks for the pointers, Almquist. I have turned down the > resolution to 16, though I may go lower as a stop-gap measure until > I get my new switches. My setup is a mixed environment where my > server is a dhcp server for both my larger network and for my ltsp > clients, thus I have two nics. One of the nics I have designated > to serve the clients and the other to server the rest of the > network. I might actually pop in a third gigabit card as you > suggested, but I am not sure how to "trunk" the two cards together > as you mentioned. Do you have any instructions on how to do this, > or should I just 'google' it? > > ~Cheers, You just want to replace the network card that is serving the clients with a gigabit one. Have that card plugged into a server with a pair of gigabit ports and a whole bunch of 10/100 ports for the clients. If getting a new switch and a gigabit card for your server isn't an option, then you could try bonding a pair or 10/100 cards by adding a third card and making both the new card and the old card serving the clients as a bonded pair. I'll warn you that your switch has to support this feature for it to work. You usually see it in larger business style switched with more that a dozen ports, rarely will this work on home/desktop switch. Google 'fedora network interface bonding' and you should get a couple good guides. I haven't had a reason to bond cards myself so I won't be much help to you there, I just know it can be done. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkvvPtwACgkQxWV7OPa/g5GJPwCfevl/RjpDLRIO5q0bBsWD7r3z 8w4AmwR/8eYYeBCRvUiwYC25KP9oxqTu =1uJ2 -----END PGP SIGNATURE----- From jannilsen.nilsen at googlemail.com Wed May 19 06:42:48 2010 From: jannilsen.nilsen at googlemail.com (jan nilsen) Date: Wed, 19 May 2010 08:42:48 +0200 Subject: [K12OSN] Bonding 3 networkcards and 3 switches. Message-ID: So, I have a server with a 1gbit NIC, and 3 16-ports switches (all 100mbit ports), that are linked togheter the old switch-in-switch style, and I have about 45 clients (mix of thinclients, workstations and laptops). When most of the machines are in use, I notice that having only 100mbit out of the server is not enough. So I can either buy myself a 48 port switch with 1gbit uplink with money we don't have (we realy don't have any money), or I thought I could try this "bonding" thing. I can put 3 network cards in the server, and connect each of those networkcards with it's own 16-port switch, that way I would have 300mbit out of the server. What kind of bonding mode should I choose? Or is there some other way? jan From burke at thealmquists.net Wed May 19 16:38:49 2010 From: burke at thealmquists.net (Burke Almquist) Date: Wed, 19 May 2010 11:38:49 -0500 Subject: [K12OSN] Bonding 3 networkcards and 3 switches. In-Reply-To: References: Message-ID: <2600F7D8-2EBF-43D7-9BC9-B4289597E014@thealmquists.net> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On May 19, 2010, at 1:42 AM, jan nilsen wrote: > So, I have a server with a 1gbit NIC, and 3 16-ports switches (all > 100mbit ports), that are linked togheter the old switch-in-switch > style, and I have about 45 clients (mix of thinclients, workstations > and laptops). > > When most of the machines are in use, I notice that having only > 100mbit out of the server is not enough. > > So I can either buy myself a 48 port switch with 1gbit uplink with > money we don't have (we realy don't have any money), > or I thought I could try this "bonding" thing. > > I can put 3 network cards in the server, and connect each of those > networkcards with it's own 16-port switch, that way I would have > 300mbit out of the server. If you are doing it this way, you aren't using bonding at all. You'd be splitting the load over three different cards, probably by segmenting your network. Doing this requires editing certain config files to make this work. This https://fedorahosted.org/k12linux/wiki/MixedNetworkSetup page will give you an idea what files need to be changed. You need all the services to run on all three nics taht are serving clients. > > What kind of bonding mode should I choose? > > Or is there some other way? > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAkv0FBkACgkQxWV7OPa/g5GtAQCaAsObTN9kdx6S3oshE3V5CuWT LKAAnRfdsCsvEaEePxnm+e07xDKWCHVu =bys9 -----END PGP SIGNATURE----- From toddobryan at gmail.com Wed May 19 17:01:21 2010 From: toddobryan at gmail.com (Todd O'Bryan) Date: Wed, 19 May 2010 13:01:21 -0400 Subject: [K12OSN] Bonding 3 networkcards and 3 switches. In-Reply-To: <2600F7D8-2EBF-43D7-9BC9-B4289597E014@thealmquists.net> References: <2600F7D8-2EBF-43D7-9BC9-B4289597E014@thealmquists.net> Message-ID: I have two of these: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1010000&CatId=2786 They work well. You get gigabit from the server to the switch(es) and then 100Mb from the switch to the client. They have an extra gigabit port so you can connect the two switches with a gigabit cable. Todd On Wed, May 19, 2010 at 12:38 PM, Burke Almquist wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > On May 19, 2010, at 1:42 AM, jan nilsen wrote: > >> So, I have a server with a 1gbit NIC, and 3 16-ports switches (all >> 100mbit ports), that are linked togheter the old switch-in-switch >> style, and I have about 45 clients (mix of thinclients, workstations >> and laptops). >> >> When most of the machines are in use, I notice that having only >> 100mbit out of the server is not enough. >> >> So I can either buy myself a 48 port switch with 1gbit uplink with >> money we don't have (we realy don't have any money), >> or I thought I could try this "bonding" thing. >> >> I can put 3 network cards in the server, and connect each of those >> networkcards with it's own 16-port switch, that way I would have >> 300mbit out of the server. > > If you are doing it this way, you aren't using bonding at all. You'd be > splitting the load over three different cards, probably by segmenting your > network. > Doing this requires editing certain config files to make this work. > > This https://fedorahosted.org/k12linux/wiki/MixedNetworkSetup page will give > you an idea what files need to be changed. You need all the services to run > on all three nics taht are serving clients. > > >> >> What kind of bonding mode should I choose? >> >> Or is there some other way? >> > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (Darwin) > > iEYEARECAAYFAkv0FBkACgkQxWV7OPa/g5GtAQCaAsObTN9kdx6S3oshE3V5CuWT > LKAAnRfdsCsvEaEePxnm+e07xDKWCHVu > =bys9 > -----END PGP SIGNATURE----- > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see > From SHarbour at nwresd.k12.or.us Wed May 19 17:09:19 2010 From: SHarbour at nwresd.k12.or.us (Sean Harbour) Date: Wed, 19 May 2010 10:09:19 -0700 Subject: [K12OSN] K12OSN Digest, Vol 75, Issue 9 In-Reply-To: References: Message-ID: <6069A203FD01884885C037F81DD750801757145F6F@wsc-mail-01.intra.nwresd.k12.or.us> I don't believe the method you are attempting will work the way you think it will. When bonding, you generally need to pipe all of the bonded NICs into the same switch, which will generally have a 1Gb capable up link port. If you really wanted to try bonding, you could try putting them all into the same switch, then tagging the other two switches off the first switch just for additional clients. If it worked, you would effectively have 300Mb available on the first switch, and 100Mb on the second and third switch. However, this is an oddball setup. The recommended solution in this case is to not bond. Plug each switch into a dedicated NIC on the server like you were going to do originally, and assign them IP addresses sequentially next to the existing client NIC (Assuming you already have a 2 NIC setup, and want to make it a 4 NIC setup). Then, configure your DHCP service on the server to service the new NICs. That should do it. Each cluster of 16 ports will have a dedicated 100Mb path back to the server. Eazy peazy. You shouldn't have to set up a separate DHCP subnet pool for each switch either. There are several write ups on how to do this already, but I think all you should have to do is modify the section of your DHCP server config like this: # On what interfaces should the DHCP server (dhcpd) serve DHCP requests? # Separate multiple interfaces with spaces, e.g. "eth0 eth1". INTERFACES="eth1 eth2 eth3" Thanks, Sean Harbour Senior Network Engineer Northwest Regional Education Service District Hillsboro, OR 97124 sharbour at nwresd.k12.or.us 503-614-1448 ________________________________________ From: k12osn-bounces at redhat.com [k12osn-bounces at redhat.com] On Behalf Of k12osn-request at redhat.com [k12osn-request at redhat.com] Sent: Wednesday, May 19, 2010 9:00 AM To: k12osn at redhat.com Subject: K12OSN Digest, Vol 75, Issue 9 Send K12OSN mailing list submissions to k12osn at redhat.com To subscribe or unsubscribe via the World Wide Web, visit https://www.redhat.com/mailman/listinfo/k12osn or, via email, send a message with subject or body 'help' to k12osn-request at redhat.com You can reach the person managing the list at k12osn-owner at redhat.com When replying, please edit your Subject line so it is more specific than "Re: Contents of K12OSN digest..." Today's Topics: 1. Bonding 3 networkcards and 3 switches. (jan nilsen) ---------------------------------------------------------------------- Message: 1 Date: Wed, 19 May 2010 08:42:48 +0200 From: jan nilsen To: k12osn at redhat.com Subject: [K12OSN] Bonding 3 networkcards and 3 switches. Message-ID: Content-Type: text/plain; charset=ISO-8859-1 So, I have a server with a 1gbit NIC, and 3 16-ports switches (all 100mbit ports), that are linked togheter the old switch-in-switch style, and I have about 45 clients (mix of thinclients, workstations and laptops). When most of the machines are in use, I notice that having only 100mbit out of the server is not enough. So I can either buy myself a 48 port switch with 1gbit uplink with money we don't have (we realy don't have any money), or I thought I could try this "bonding" thing. I can put 3 network cards in the server, and connect each of those networkcards with it's own 16-port switch, that way I would have 300mbit out of the server. What kind of bonding mode should I choose? Or is there some other way? jan ------------------------------ _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn End of K12OSN Digest, Vol 75, Issue 9 ************************************* From Steven at SimplyCircus.com Wed May 19 17:17:42 2010 From: Steven at SimplyCircus.com (Steven Santos) Date: Wed, 19 May 2010 13:17:42 -0400 Subject: [K12OSN] Bonding 3 networkcards and 3 switches. In-Reply-To: <2600F7D8-2EBF-43D7-9BC9-B4289597E014@thealmquists.net> References: <2600F7D8-2EBF-43D7-9BC9-B4289597E014@thealmquists.net> Message-ID: The other part about doing it this way is that you can put your thick clients on 100mbit segments, and the thin clients on the switch with the gigabit port. --- Steven Santos Director, Simply Circus, Inc. Email: Steven at SimplyCircus.com Mail: 14 Pierrepont Road Newton, MA 02462 Phone: 617-527-0667 Web: www.SimplyCircus.com > -----Original Message----- > From: k12osn-bounces at redhat.com [mailto:k12osn-bounces at redhat.com] On > Behalf Of Burke Almquist > Sent: Wednesday, May 19, 2010 12:39 PM > To: Support list for open source software in schools. > Subject: Re: [K12OSN] Bonding 3 networkcards and 3 switches. > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > On May 19, 2010, at 1:42 AM, jan nilsen wrote: > > > So, I have a server with a 1gbit NIC, and 3 16-ports switches (all > > 100mbit ports), that are linked togheter the old switch-in-switch > > style, and I have about 45 clients (mix of thinclients, workstations > > and laptops). > > > > When most of the machines are in use, I notice that having only > > 100mbit out of the server is not enough. > > > > So I can either buy myself a 48 port switch with 1gbit uplink with > > money we don't have (we realy don't have any money), > > or I thought I could try this "bonding" thing. > > > > I can put 3 network cards in the server, and connect each of those > > networkcards with it's own 16-port switch, that way I would have > > 300mbit out of the server. > If you are doing it this way, you aren't using bonding at all. You'd > be splitting the load over three different cards, probably by > segmenting your network. > Doing this requires editing certain config files to make this work. > > This https://fedorahosted.org/k12linux/wiki/MixedNetworkSetup page > will give you an idea what files need to be changed. You need all the > services to run on all three nics taht are serving clients. > > > > > > What kind of bonding mode should I choose? > > > > Or is there some other way? > > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (Darwin) > > iEYEARECAAYFAkv0FBkACgkQxWV7OPa/g5GtAQCaAsObTN9kdx6S3oshE3V5CuWT > LKAAnRfdsCsvEaEePxnm+e07xDKWCHVu > =bys9 > -----END PGP SIGNATURE----- > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see From microman at cmosnetworks.com Wed May 19 20:22:59 2010 From: microman at cmosnetworks.com (Terrell Prude' Jr.) Date: Wed, 19 May 2010 16:22:59 -0400 Subject: [K12OSN] Bonding 3 networkcards and 3 switches. In-Reply-To: References: Message-ID: <4BF448A3.1030407@cmosnetworks.com> You really should get a switch with at least one Gbit port. TuxType and TuxMath have both been measured over the years to use just under 73 Mbits/sec, per session. You don't have to buy Cisco or any other "Rolls Royce" brand like that, but fortunately switches are less money now. Seriously, I'd take the case up and say "hey, we need to juggle money from *somewhere* for this." Now, that said, channel bonding does work. Cisco calls it "EtherChannel", and the Linux version of channel bonding is compatible (I did it some years ago). However, your switching architecture must also support it. In your case, it doesn't look like it does. The other way to do it is to go ahead and connect each NIC to each switch. I've done this before, too, and it works very well. You will need to have a separate IP subnet per NIC. For example, you could do the following: eth0: 192.168.0.0/24 eth1: 192.168.1.0/24 eth2: 192.168.2.0/24 and you would make entries in /etc/hosts as appropriate. You'd also make appropriate DHCP scopes in /etc/dhcpd.conf or whatever K12Linux uses now. I used this method to get x86, PowerPC, and UltraSPARC thin clients all running off the same K12LTSP server a few years back. I scored some major coolness points for that one. :-) It's really not "hard" to do. It's simply a matter of paying attention to detail and knowing what's needed. Let us know if you run into issues. --TP jan nilsen wrote: > So, I have a server with a 1gbit NIC, and 3 16-ports switches (all > 100mbit ports), that are linked togheter the old switch-in-switch > style, and I have about 45 clients (mix of thinclients, workstations > and laptops). > > When most of the machines are in use, I notice that having only > 100mbit out of the server is not enough. > > So I can either buy myself a 48 port switch with 1gbit uplink with > money we don't have (we realy don't have any money), > or I thought I could try this "bonding" thing. > > I can put 3 network cards in the server, and connect each of those > networkcards with it's own 16-port switch, that way I would have > 300mbit out of the server. > > What kind of bonding mode should I choose? > > Or is there some other way? > > jan > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see > From monteslu at cox.net Wed May 19 21:14:56 2010 From: monteslu at cox.net (Luis Montes) Date: Wed, 19 May 2010 14:14:56 -0700 Subject: [K12OSN] summer ltsp upgrade plans Message-ID: <4BF454D0.4030407@cox.net> Curious to see if anyone else is doing upgrades this summer to Fedora13+LTSP. I spent a few years on Eric's K12LTSP, then edubuntu(for ltsp5/muekow), then back to fedora+ltsp as soon as Warren put out his first release. I was hoping to use a Centos ltsp at some point, but RHEL6 is just in beta and likely wont be done before school starts next year. Just throwing that out there and wondering the direction people are going with ltsp right now. Thanks, Luis From joseph.bishay at gmail.com Thu May 20 00:13:44 2010 From: joseph.bishay at gmail.com (Joseph Bishay) Date: Wed, 19 May 2010 20:13:44 -0400 Subject: [K12OSN] summer ltsp upgrade plans In-Reply-To: <4BF454D0.4030407@cox.net> References: <4BF454D0.4030407@cox.net> Message-ID: Hello, I'm actually planning the same thing. Our school's current setup is K12Linux based on Fedora 10. I've put off updating/upgrading until this summer when I assume a new spin of K12Linux based on Fedora 13 will be available. The move from K12LTSP to K12Linux actually caused us some major problems as all our hardware was too old and wouldn't run. Ended up working out OK as we were able to obtain donations of newer hardware (we're a school run by a Church and so have a very limited budget) but of course when I say "newer" I mean PII/PIII :) Joseph On Wed, May 19, 2010 at 5:14 PM, Luis Montes wrote: > Curious to see if anyone else is doing upgrades this summer to > Fedora13+LTSP. > I spent a few years on Eric's K12LTSP, then edubuntu(for ltsp5/muekow), then > back to fedora+ltsp as soon as Warren put out his first release. > > I was hoping to use a Centos ltsp at some point, but RHEL6 is just in beta > and likely wont be done before school starts next year. > > Just throwing that out there and wondering the direction people are going > with ltsp right now. > > Thanks, > > Luis > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see > From marlou_madrio_y_jasmin at moe.edu.sg Thu May 20 01:10:39 2010 From: marlou_madrio_y_jasmin at moe.edu.sg (Marlou Madrio Y Jasmin) Date: Thu, 20 May 2010 09:10:39 +0800 Subject: [K12OSN] New to K12 LTSP Message-ID: Hi All, I'm new to K12 LTSP but I have been a Linux and Moodle Admin since may 2009 Glad to be part of this endeavor. I am thinking ways and means we can maximize IT enabled learning for our school. On top of my agenda of course is to put up our own system here with Moodle as our LMS I have began to put up my own K12 LTSP server at home, first for prototyping purposes and soon embark on a school wide project when everything is all in place. I also want to delve into Streaming Server Technologies using VLC I want to come up with something similar to Justin TV but purely for educational purposes Teachers and Educators can produce their own Podcasts and I want to broadcast it in our school thru Diskless Terminal Kiosks Again, I'm glad to be part of this endeavor. Marlou J. Madrio - ICT Executive Clementi Town Secondary School -------------- next part -------------- An HTML attachment was scrubbed... URL: From william at fragakis.com Thu May 20 16:24:11 2010 From: william at fragakis.com (William Fragakis) Date: Thu, 20 May 2010 12:24:11 -0400 Subject: [K12OSN] Bonding 3 networkcards and 3 switches. In-Reply-To: References: Message-ID: <1274372651.2936.18.camel@localhost.localdomain> Is something like this in the budget? http://www.newegg.com/Product/Product.aspx?Item=N82E16817111450 Two of these plus another gigabit NIC For all the work, cost and fuss, 300mbit isn't going to help much. As I mentioned before, we could easily saturate a 10/100 with only 5-6 clients. Tripling that (ignoring overhead, etc.) now gets you up to 15 clients max on your duct taped 10/100 network which is far short of what you have. I know budgets are tight to non-existant but avoid, if possible, a solution that just means you are going to have to do it again properly. Regards, William > Message: 1 > Date: Wed, 19 May 2010 08:42:48 +0200 > From: jan nilsen > To: k12osn at redhat.com > Subject: [K12OSN] Bonding 3 networkcards and 3 switches. > Message-ID: > > Content-Type: text/plain; charset=ISO-8859-1 > > So, I have a server with a 1gbit NIC, and 3 16-ports switches (all > 100mbit ports), that are linked togheter the old switch-in-switch > style, and I have about 45 clients (mix of thinclients, workstations > and laptops). > > When most of the machines are in use, I notice that having only > 100mbit out of the server is not enough. > > So I can either buy myself a 48 port switch with 1gbit uplink with > money we don't have (we realy don't have any money), > or I thought I could try this "bonding" thing. > > I can put 3 network cards in the server, and connect each of those > networkcards with it's own 16-port switch, that way I would have > 300mbit out of the server. > > What kind of bonding mode should I choose? > > Or is there some other way? > > jan > > > > ------------------------------ > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > > End of K12OSN Digest, Vol 75, Issue 9 > ************************************* From joseph.bishay at gmail.com Fri May 28 14:16:50 2010 From: joseph.bishay at gmail.com (Joseph Bishay) Date: Fri, 28 May 2010 10:16:50 -0400 Subject: [K12OSN] Fedora 13 and K12Linux? Message-ID: Hello, I hope everyone is doing well. I'm planning, once this school year is complete for the summer, to wipe and upgrade our K12Linux server. Is there any plan to spin a K12Linux distribution based on Fedora 13 that just came out? (thanks for all the hard work with the previous versions of K12Linux and K12LTSP!) Thank you, Joseph