From johan.vermeulen7 at telenet.be Tue Apr 14 09:55:25 2015 From: johan.vermeulen7 at telenet.be (johan.vermeulen7 at telenet.be) Date: Tue, 14 Apr 2015 11:55:25 +0200 (CEST) Subject: [K12OSN] : CentOS 7 & LTSP adventures, success. In-Reply-To: References: Message-ID: <921126396.33225532.1429005325060.JavaMail.root@telenet.be> Hello Barry, Hello All, so I'm also experimenting on Centos7. I followed the procedure described by Barry below. The thinclient boots fine, but users or root can't logon. The EM I'm seeing is: Apr 14 11:46:02 localhost sshd[5003]: Connection closed by 192.168.63.130 [preauth] I tried the usual, ltsp-update-sshkeys, Selinux, ... Can anyone help me with this? Many thanks. Johan ----- Oorspronkelijk bericht ----- Van: "Johan Vermeulen" Aan: "Support list for open source software in schools." Verzonden: Vrijdag 2 januari 2015 22:34:53 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Barry, thanks for letting us know. I am planning on deploying k12linux on Centos7. Greetings, johan Barry R Cisna schreef: >Hello All, > >Thought this may be of interest to some here. >Decided to see how an install of LTSP on CentOS 7 would go,so here are >my findings and long story short LTSP can work on CentOS 7! > >1) Fresh install of CentOS 7 >2) Do the standard install of the ltsp repo.rpm >3)" yum -y install ltsp-server", fails with three dependencies not >fulfilled. >4) add the epel & repoforge repos., still fails with xorg-x11-xdm not >found >5) find this rpm on net in i386 and force install >6) ltsp-server now installs fine on server, and ltsp-build-client builds >fine as well. >7) thin client boots but fails login, same as a recent CentOS 6.6 & LTSP >with root trying to get a login from ssh right behind the standard user? > >Plan B: > >1) rename /tftpboot/ltsp and /opt/ltsp to ltsp_OLD on CentOS 7 server. > >1a) from a working 8 month old install of LTSP on CentOS 6.6 on server >rsync -avz /var/lib/tftpboot/ltsp remoteCentOS7:/var/lib/tftpboot/ >rsync -avz /opt/ltsp remoteCentOS7:/opt/ >2a) restart nfs & xinetd services >3a) ltsp-update-sshkeys & ltsp-update-kernels >4a) boot client - login success! >5a) usb sticks & sound works. >6a) #optional, install latest google chrome on server with, >http://tecadmin.net/install-google-chrome-in-centos-rhel-and-fedora/ > >Not necessary but all of the recent ltsp/k12linux server gets frequent >flash-plugin/plugin-container crashes using latest Firefox, >flash-plugin . >This is a known problem running flash-plugin on remote displays. > >Hope this may help someone. > >Barry > > > > >_______________________________________________ >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 From johan.vermeulen7 at telenet.be Tue Apr 14 10:11:18 2015 From: johan.vermeulen7 at telenet.be (johan.vermeulen7 at telenet.be) Date: Tue, 14 Apr 2015 12:11:18 +0200 (CEST) Subject: [K12OSN] : CentOS 7 & LTSP adventures, success. In-Reply-To: <921126396.33225532.1429005325060.JavaMail.root@telenet.be> References: <921126396.33225532.1429005325060.JavaMail.root@telenet.be> Message-ID: <1462417956.33278864.1429006278948.JavaMail.root@telenet.be> Hello, it could be this is related to Lightdm, the server has mate-desktop installed. I'm also seeing this EM: Apr 14 12:04:36 localhost lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" Aan: "Support list for open source software in schools." Verzonden: Dinsdag 14 april 2015 11:55:25 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Hello Barry, Hello All, so I'm also experimenting on Centos7. I followed the procedure described by Barry below. The thinclient boots fine, but users or root can't logon. The EM I'm seeing is: Apr 14 11:46:02 localhost sshd[5003]: Connection closed by 192.168.63.130 [preauth] I tried the usual, ltsp-update-sshkeys, Selinux, ... Can anyone help me with this? Many thanks. Johan ----- Oorspronkelijk bericht ----- Van: "Johan Vermeulen" Aan: "Support list for open source software in schools." Verzonden: Vrijdag 2 januari 2015 22:34:53 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Barry, thanks for letting us know. I am planning on deploying k12linux on Centos7. Greetings, johan Barry R Cisna schreef: >Hello All, > >Thought this may be of interest to some here. >Decided to see how an install of LTSP on CentOS 7 would go,so here are >my findings and long story short LTSP can work on CentOS 7! > >1) Fresh install of CentOS 7 >2) Do the standard install of the ltsp repo.rpm >3)" yum -y install ltsp-server", fails with three dependencies not >fulfilled. >4) add the epel & repoforge repos., still fails with xorg-x11-xdm not >found >5) find this rpm on net in i386 and force install >6) ltsp-server now installs fine on server, and ltsp-build-client builds >fine as well. >7) thin client boots but fails login, same as a recent CentOS 6.6 & LTSP >with root trying to get a login from ssh right behind the standard user? > >Plan B: > >1) rename /tftpboot/ltsp and /opt/ltsp to ltsp_OLD on CentOS 7 server. > >1a) from a working 8 month old install of LTSP on CentOS 6.6 on server >rsync -avz /var/lib/tftpboot/ltsp remoteCentOS7:/var/lib/tftpboot/ >rsync -avz /opt/ltsp remoteCentOS7:/opt/ >2a) restart nfs & xinetd services >3a) ltsp-update-sshkeys & ltsp-update-kernels >4a) boot client - login success! >5a) usb sticks & sound works. >6a) #optional, install latest google chrome on server with, >http://tecadmin.net/install-google-chrome-in-centos-rhel-and-fedora/ > >Not necessary but all of the recent ltsp/k12linux server gets frequent >flash-plugin/plugin-container crashes using latest Firefox, >flash-plugin . >This is a known problem running flash-plugin on remote displays. > >Hope this may help someone. > >Barry > > > > >_______________________________________________ >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 For more info see From johan.vermeulen7 at telenet.be Tue Apr 14 10:27:24 2015 From: johan.vermeulen7 at telenet.be (johan.vermeulen7 at telenet.be) Date: Tue, 14 Apr 2015 12:27:24 +0200 (CEST) Subject: [K12OSN] : CentOS 7 & LTSP adventures, success. In-Reply-To: <1462417956.33278864.1429006278948.JavaMail.root@telenet.be> References: <921126396.33225532.1429005325060.JavaMail.root@telenet.be> <1462417956.33278864.1429006278948.JavaMail.root@telenet.be> Message-ID: <1694615619.33324252.1429007244550.JavaMail.root@telenet.be> And now I'm seeing this in lightdm log: [root at localhost ~]# tail -f /var/log/lightdm/x-0-greeter.log (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type: assertion 'value != NULL' failed (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type_string: assertion 'value != NULL' failed ** (lightdm-gtk-greeter:868): WARNING **: Unexpected accounts property type for XHasMessages: (null) (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_unref: assertion 'value != NULL' failed ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" Aan: "Support list for open source software in schools." Verzonden: Dinsdag 14 april 2015 12:11:18 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Hello, it could be this is related to Lightdm, the server has mate-desktop installed. I'm also seeing this EM: Apr 14 12:04:36 localhost lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" Aan: "Support list for open source software in schools." Verzonden: Dinsdag 14 april 2015 11:55:25 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Hello Barry, Hello All, so I'm also experimenting on Centos7. I followed the procedure described by Barry below. The thinclient boots fine, but users or root can't logon. The EM I'm seeing is: Apr 14 11:46:02 localhost sshd[5003]: Connection closed by 192.168.63.130 [preauth] I tried the usual, ltsp-update-sshkeys, Selinux, ... Can anyone help me with this? Many thanks. Johan ----- Oorspronkelijk bericht ----- Van: "Johan Vermeulen" Aan: "Support list for open source software in schools." Verzonden: Vrijdag 2 januari 2015 22:34:53 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Barry, thanks for letting us know. I am planning on deploying k12linux on Centos7. Greetings, johan Barry R Cisna schreef: >Hello All, > >Thought this may be of interest to some here. >Decided to see how an install of LTSP on CentOS 7 would go,so here are >my findings and long story short LTSP can work on CentOS 7! > >1) Fresh install of CentOS 7 >2) Do the standard install of the ltsp repo.rpm >3)" yum -y install ltsp-server", fails with three dependencies not >fulfilled. >4) add the epel & repoforge repos., still fails with xorg-x11-xdm not >found >5) find this rpm on net in i386 and force install >6) ltsp-server now installs fine on server, and ltsp-build-client builds >fine as well. >7) thin client boots but fails login, same as a recent CentOS 6.6 & LTSP >with root trying to get a login from ssh right behind the standard user? > >Plan B: > >1) rename /tftpboot/ltsp and /opt/ltsp to ltsp_OLD on CentOS 7 server. > >1a) from a working 8 month old install of LTSP on CentOS 6.6 on server >rsync -avz /var/lib/tftpboot/ltsp remoteCentOS7:/var/lib/tftpboot/ >rsync -avz /opt/ltsp remoteCentOS7:/opt/ >2a) restart nfs & xinetd services >3a) ltsp-update-sshkeys & ltsp-update-kernels >4a) boot client - login success! >5a) usb sticks & sound works. >6a) #optional, install latest google chrome on server with, >http://tecadmin.net/install-google-chrome-in-centos-rhel-and-fedora/ > >Not necessary but all of the recent ltsp/k12linux server gets frequent >flash-plugin/plugin-container crashes using latest Firefox, >flash-plugin . >This is a known problem running flash-plugin on remote displays. > >Hope this may help someone. > >Barry > > > > >_______________________________________________ >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 For more info see _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see From kenneth.lundstrom at nudata.fi Tue Apr 14 10:59:56 2015 From: kenneth.lundstrom at nudata.fi (=?utf-8?Q?Kenneth_Lundstr=C3=B6m?=) Date: Tue, 14 Apr 2015 13:59:56 +0300 Subject: [K12OSN] LTSP slowness problem Message-ID: Hello everyone, I have a strange problem that I have been trying to solve for months. A client have a setup of 6-7 LTSP terminals and one server. Because of room structure we need to have 3 switches, all are 1 GB. Server has one 1GB network card. As I couldn't get LTSP working on CentOS 7 I switched to Ubuntu. Problem is the slowness of the clients. If 1-2 are working everything is fine, but when we have like 5 working the same time we get slowness, like when writing an email in Thunderbird it just stops showing the writing on the screen. I swtich away from KDE to LightDM (I think was the name), still same. One thing we think might be the problem is the filemanager. When somebody open filemanager and looks at the folder with like 100 files everything stop. All files are on the same server as LTSP is running. Any ideas where to look for the problem and solving it. Kenneth -------------- next part -------------- An HTML attachment was scrubbed... URL: From jim.kinney at gmail.com Tue Apr 14 11:25:11 2015 From: jim.kinney at gmail.com (Jim Kinney) Date: Tue, 14 Apr 2015 07:25:11 -0400 Subject: [K12OSN] LTSP slowness problem In-Reply-To: References: Message-ID: Sounds like the server is just too weak for the load. RAM matters. Multiple hard drives can make a big difference. 1g network for only 7 clients is plenty unless its all youtube videos. On Apr 14, 2015 7:01 AM, "Kenneth Lundstr?m" wrote: > Hello everyone, > > > I have a strange problem that I have been trying to solve for months. > > > A client have a setup of 6-7 LTSP terminals and one server. Because of > room structure we need to have 3 switches, all are 1 GB. Server has one 1GB > network card. As I couldn't get LTSP working on CentOS 7 I switched to > Ubuntu. > > > Problem is the slowness of the clients. If 1-2 are working everything is > fine, but when we have like 5 working the same time we get slowness, like > when writing an email in Thunderbird it just stops showing the writing on > the screen. > > > I swtich away from KDE to LightDM (I think was the name), still same. > > > One thing we think might be the problem is the filemanager. When somebody > open filemanager and looks at the folder with like 100 files everything > stop. All files are on the same server as LTSP is running. > > > Any ideas where to look for the problem and solving it. > > > > Kenneth > > > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see > -------------- next part -------------- An HTML attachment was scrubbed... URL: From jim.kinney at gmail.com Tue Apr 14 12:15:34 2015 From: jim.kinney at gmail.com (Jim Kinney) Date: Tue, 14 Apr 2015 08:15:34 -0400 Subject: [K12OSN] LTSP slowness problem In-Reply-To: References: Message-ID: That python process is eating the system. Need cpuinfo as well. How many cores? A single core can get bogged down swapping memory out between user jobs and system jobs. Note: Intel cpus use their hyperthreading mode. That's only useful for processes that are shared memory. When the use is non-shared memory work, hyperthreading can actually slow down the system. I turn it off by default in the bios. On Apr 14, 2015 7:32 AM, "Kenneth Lundstr?m" wrote: > Hi, > > > here is a small capture of top results: > > top - 14:29:39 up 11 days, 5:43, 6 users, load average: 1,98, 2,16, 2,03 > Tasks: 402 total, 3 running, 397 sleeping, 1 stopped, 1 zombie > %Cpu(s): 12,4 us, 3,8 sy, 0,0 ni, 81,7 id, 2,0 wa, 0,0 hi, 0,1 si, > 0,0 st > KiB Mem: 16593728 total, 9841308 used, 6752420 free, 291936 buffers > KiB Swap: 16773116 total, 0 used, 16773116 free. 6716260 cached Mem > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 11101 xx1 20 0 110524 34928 21764 R 100,0 0,2 10231:46 python > 18506 xx1 20 0 1000664 278496 45620 S 16,9 1,7 13:57.25 firefox > 32129 xx2 20 0 784320 274336 44752 S 3,0 1,7 12:11.78 > thunderbird > 32133 xx2 20 0 1058788 352892 46728 R 2,7 2,1 13:16.16 firefox > 31698 root 20 0 10144 3268 2508 S 1,7 0,0 0:00.11 sshd > 23 root 20 0 0 0 0 S 0,7 0,0 8:25.98 > ksoftirqd/3 > 16121 root 20 0 0 0 0 S 0,7 0,0 0:05.42 > kworker/1:2 > 18 root 20 0 0 0 0 S 0,3 0,0 10:11.20 > ksoftirqd/2 > 38 root 20 0 0 0 0 S 0,3 0,0 9:52.39 > ksoftirqd/6 > 43 root 20 0 0 0 0 S 0,3 0,0 8:30.15 > ksoftirqd/7 > 1776 xx3 20 0 335288 41872 19920 S 0,3 0,3 0:50.63 > plugin-containe > 16798 xx4 20 0 874020 292644 45340 S 0,3 1,8 1:27.02 firefox > 19382 xx4 20 0 233152 26560 16572 S 0,3 0,2 0:07.70 > plugin-containe > 30002 xx2 20 0 231240 27512 17564 S 0,3 0,2 0:01.89 > plugin-containe > > If I remember correctly it is running on two harddisk but in mirror mode. > > > > Kenneth > > > > -----Original message----- > *From:* Jim Kinney > *Sent:* Tuesday 14th April 2015 14:27 > *To:* Support list for open source software in schools. > > *Subject:* Re: [K12OSN] LTSP slowness problem > > Sounds like the server is just too weak for the load. RAM matters. > Multiple hard drives can make a big difference. > 1g network for only 7 clients is plenty unless its all youtube videos. > On Apr 14, 2015 7:01 AM, "Kenneth Lundstr?m" > wrote: > >> Hello everyone, >> >> >> I have a strange problem that I have been trying to solve for months. >> >> >> A client have a setup of 6-7 LTSP terminals and one server. Because of >> room structure we need to have 3 switches, all are 1 GB. Server has one 1GB >> network card. As I couldn't get LTSP working on CentOS 7 I switched to >> Ubuntu. >> >> >> Problem is the slowness of the clients. If 1-2 are working everything is >> fine, but when we have like 5 working the same time we get slowness, like >> when writing an email in Thunderbird it just stops showing the writing on >> the screen. >> >> >> I swtich away from KDE to LightDM (I think was the name), still same. >> >> >> One thing we think might be the problem is the filemanager. When somebody >> open filemanager and looks at the folder with like 100 files everything >> stop. All files are on the same server as LTSP is running. >> >> >> Any ideas where to look for the problem and solving it. >> >> >> >> Kenneth >> >> >> >> _______________________________________________ >> 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 > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From johan.vermeulen7 at telenet.be Tue Apr 14 16:50:00 2015 From: johan.vermeulen7 at telenet.be (johan.vermeulen7 at telenet.be) Date: Tue, 14 Apr 2015 18:50:00 +0200 (CEST) Subject: [K12OSN] : CentOS 7 & LTSP adventures, success. In-Reply-To: <1694615619.33324252.1429007244550.JavaMail.root@telenet.be> References: <921126396.33225532.1429005325060.JavaMail.root@telenet.be> <1462417956.33278864.1429006278948.JavaMail.root@telenet.be> <1694615619.33324252.1429007244550.JavaMail.root@telenet.be> Message-ID: <705257384.34192478.1429030200647.JavaMail.root@telenet.be> Hello All, after copying over more recent images, this changes. Login at first seems to work.Then the screen goes all stripy, and goes back to logon screen. In /var/log/messages: Apr 14 18:40:42 localhost systemd: Created slice user-1000.slice. Apr 14 18:40:42 localhost systemd: Starting Session 3 of user caw. Apr 14 18:40:42 localhost systemd: Started Session 3 of user caw. Apr 14 18:40:42 localhost systemd-logind: New session 3 of user caw. Apr 14 18:40:47 localhost xinetd[1572]: START: ldminfod pid=3564 from=::ffff:192.168.63.130 Apr 14 18:40:47 localhost xinetd[1572]: EXIT: ldminfod status=0 pid=3564 duration=0(sec) Apr 14 18:40:55 localhost systemd-logind: Removed session 3. In /var/log/secure: Apr 14 18:40:42 localhost sshd[3156]: Accepted password for caw from 192.168.63.130 port 47688 ssh2 Apr 14 18:40:42 localhost sshd[3156]: pam_unix(sshd:session): session opened for user caw by (uid=0) Apr 14 18:40:46 localhost sshd[3160]: Received disconnect from 192.168.63.130: 11: disconnected by user Apr 14 18:40:46 localhost sshd[3156]: pam_unix(sshd:session): session closed for user caw Thanks for any clues. greetings, Johan ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" Aan: "Support list for open source software in schools." Verzonden: Dinsdag 14 april 2015 12:27:24 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. And now I'm seeing this in lightdm log: [root at localhost ~]# tail -f /var/log/lightdm/x-0-greeter.log (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type: assertion 'value != NULL' failed (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type_string: assertion 'value != NULL' failed ** (lightdm-gtk-greeter:868): WARNING **: Unexpected accounts property type for XHasMessages: (null) (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_unref: assertion 'value != NULL' failed ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" Aan: "Support list for open source software in schools." Verzonden: Dinsdag 14 april 2015 12:11:18 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Hello, it could be this is related to Lightdm, the server has mate-desktop installed. I'm also seeing this EM: Apr 14 12:04:36 localhost lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" Aan: "Support list for open source software in schools." Verzonden: Dinsdag 14 april 2015 11:55:25 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Hello Barry, Hello All, so I'm also experimenting on Centos7. I followed the procedure described by Barry below. The thinclient boots fine, but users or root can't logon. The EM I'm seeing is: Apr 14 11:46:02 localhost sshd[5003]: Connection closed by 192.168.63.130 [preauth] I tried the usual, ltsp-update-sshkeys, Selinux, ... Can anyone help me with this? Many thanks. Johan ----- Oorspronkelijk bericht ----- Van: "Johan Vermeulen" Aan: "Support list for open source software in schools." Verzonden: Vrijdag 2 januari 2015 22:34:53 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Barry, thanks for letting us know. I am planning on deploying k12linux on Centos7. Greetings, johan Barry R Cisna schreef: >Hello All, > >Thought this may be of interest to some here. >Decided to see how an install of LTSP on CentOS 7 would go,so here are >my findings and long story short LTSP can work on CentOS 7! > >1) Fresh install of CentOS 7 >2) Do the standard install of the ltsp repo.rpm >3)" yum -y install ltsp-server", fails with three dependencies not >fulfilled. >4) add the epel & repoforge repos., still fails with xorg-x11-xdm not >found >5) find this rpm on net in i386 and force install >6) ltsp-server now installs fine on server, and ltsp-build-client builds >fine as well. >7) thin client boots but fails login, same as a recent CentOS 6.6 & LTSP >with root trying to get a login from ssh right behind the standard user? > >Plan B: > >1) rename /tftpboot/ltsp and /opt/ltsp to ltsp_OLD on CentOS 7 server. > >1a) from a working 8 month old install of LTSP on CentOS 6.6 on server >rsync -avz /var/lib/tftpboot/ltsp remoteCentOS7:/var/lib/tftpboot/ >rsync -avz /opt/ltsp remoteCentOS7:/opt/ >2a) restart nfs & xinetd services >3a) ltsp-update-sshkeys & ltsp-update-kernels >4a) boot client - login success! >5a) usb sticks & sound works. >6a) #optional, install latest google chrome on server with, >http://tecadmin.net/install-google-chrome-in-centos-rhel-and-fedora/ > >Not necessary but all of the recent ltsp/k12linux server gets frequent >flash-plugin/plugin-container crashes using latest Firefox, >flash-plugin . >This is a known problem running flash-plugin on remote displays. > >Hope this may help someone. > >Barry > > > > >_______________________________________________ >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 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 For more info see From jim.kinney at gmail.com Tue Apr 14 16:54:22 2015 From: jim.kinney at gmail.com (Jim Kinney) Date: Tue, 14 Apr 2015 12:54:22 -0400 Subject: [K12OSN] : CentOS 7 & LTSP adventures, success. In-Reply-To: <705257384.34192478.1429030200647.JavaMail.root@telenet.be> References: <921126396.33225532.1429005325060.JavaMail.root@telenet.be> <1462417956.33278864.1429006278948.JavaMail.root@telenet.be> <1694615619.33324252.1429007244550.JavaMail.root@telenet.be> <705257384.34192478.1429030200647.JavaMail.root@telenet.be> Message-ID: Disable selinux with setenforce 0 and retry. Or you can go digging in the audit log for clues. On Apr 14, 2015 12:51 PM, wrote: > Hello All, > > after copying over more recent images, this changes. > Login at first seems to work.Then the screen goes all stripy, and goes > back to logon screen. > In /var/log/messages: > Apr 14 18:40:42 localhost systemd: Created slice user-1000.slice. > Apr 14 18:40:42 localhost systemd: Starting Session 3 of user caw. > Apr 14 18:40:42 localhost systemd: Started Session 3 of user caw. > Apr 14 18:40:42 localhost systemd-logind: New session 3 of user caw. > Apr 14 18:40:47 localhost xinetd[1572]: START: ldminfod pid=3564 > from=::ffff:192.168.63.130 > Apr 14 18:40:47 localhost xinetd[1572]: EXIT: ldminfod status=0 pid=3564 > duration=0(sec) > Apr 14 18:40:55 localhost systemd-logind: Removed session 3. > > In /var/log/secure: > Apr 14 18:40:42 localhost sshd[3156]: Accepted password for caw from > 192.168.63.130 port 47688 ssh2 > Apr 14 18:40:42 localhost sshd[3156]: pam_unix(sshd:session): session > opened for user caw by (uid=0) > Apr 14 18:40:46 localhost sshd[3160]: Received disconnect from > 192.168.63.130: 11: disconnected by user > Apr 14 18:40:46 localhost sshd[3156]: pam_unix(sshd:session): session > closed for user caw > > Thanks for any clues. > > greetings, Johan > > ----- Oorspronkelijk bericht ----- > Van: "johan vermeulen7" > Aan: "Support list for open source software in schools." < > k12osn at redhat.com> > Verzonden: Dinsdag 14 april 2015 12:27:24 > Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. > > And now I'm seeing this in lightdm log: > > [root at localhost ~]# tail -f /var/log/lightdm/x-0-greeter.log > > (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type: assertion > 'value != NULL' failed > > (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_type_is_subtype_of: > assertion 'g_variant_type_check (type)' failed > > (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type_string: > assertion 'value != NULL' failed > > ** (lightdm-gtk-greeter:868): WARNING **: Unexpected accounts property > type for XHasMessages: (null) > > (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_unref: assertion > 'value != NULL' failed > > ----- Oorspronkelijk bericht ----- > Van: "johan vermeulen7" > Aan: "Support list for open source software in schools." < > k12osn at redhat.com> > Verzonden: Dinsdag 14 april 2015 12:11:18 > Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. > > Hello, > > it could be this is related to Lightdm, the server has mate-desktop > installed. I'm also seeing this EM: > Apr 14 12:04:36 localhost lightdm: pam_unix(lightdm-greeter:session): > session closed for user lightdm > > ----- Oorspronkelijk bericht ----- > Van: "johan vermeulen7" > Aan: "Support list for open source software in schools." < > k12osn at redhat.com> > Verzonden: Dinsdag 14 april 2015 11:55:25 > Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. > > Hello Barry, Hello All, > > so I'm also experimenting on Centos7. > > I followed the procedure described by Barry below. > > The thinclient boots fine, but users or root can't logon. > The EM I'm seeing is: > Apr 14 11:46:02 localhost sshd[5003]: Connection closed by 192.168.63.130 > [preauth] > > I tried the usual, ltsp-update-sshkeys, Selinux, ... > > Can anyone help me with this? > > Many thanks. > > Johan > > ----- Oorspronkelijk bericht ----- > Van: "Johan Vermeulen" > Aan: "Support list for open source software in schools." < > k12osn at redhat.com> > Verzonden: Vrijdag 2 januari 2015 22:34:53 > Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. > > Barry, > > thanks for letting us know. > I am planning on deploying k12linux on Centos7. > > Greetings, johan > > Barry R Cisna schreef: > > >Hello All, > > > >Thought this may be of interest to some here. > >Decided to see how an install of LTSP on CentOS 7 would go,so here are > >my findings and long story short LTSP can work on CentOS 7! > > > >1) Fresh install of CentOS 7 > >2) Do the standard install of the ltsp repo.rpm > >3)" yum -y install ltsp-server", fails with three dependencies not > >fulfilled. > >4) add the epel & repoforge repos., still fails with xorg-x11-xdm not > >found > >5) find this rpm on net in i386 and force install > >6) ltsp-server now installs fine on server, and ltsp-build-client builds > >fine as well. > >7) thin client boots but fails login, same as a recent CentOS 6.6 & LTSP > >with root trying to get a login from ssh right behind the standard user? > > > >Plan B: > > > >1) rename /tftpboot/ltsp and /opt/ltsp to ltsp_OLD on CentOS 7 server. > > > >1a) from a working 8 month old install of LTSP on CentOS 6.6 on server > >rsync -avz /var/lib/tftpboot/ltsp remoteCentOS7:/var/lib/tftpboot/ > >rsync -avz /opt/ltsp remoteCentOS7:/opt/ > >2a) restart nfs & xinetd services > >3a) ltsp-update-sshkeys & ltsp-update-kernels > >4a) boot client - login success! > >5a) usb sticks & sound works. > >6a) #optional, install latest google chrome on server with, > >http://tecadmin.net/install-google-chrome-in-centos-rhel-and-fedora/ > > > >Not necessary but all of the recent ltsp/k12linux server gets frequent > >flash-plugin/plugin-container crashes using latest Firefox, > >flash-plugin . > >This is a known problem running flash-plugin on remote displays. > > > >Hope this may help someone. > > > >Barry > > > > > > > > > >_______________________________________________ > >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 > 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 > For more info see > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see > -------------- next part -------------- An HTML attachment was scrubbed... URL: From johan.vermeulen7 at telenet.be Tue Apr 14 19:20:27 2015 From: johan.vermeulen7 at telenet.be (johan.vermeulen7 at telenet.be) Date: Tue, 14 Apr 2015 21:20:27 +0200 (CEST) Subject: [K12OSN] : CentOS 7 & LTSP adventures, success. In-Reply-To: References: <921126396.33225532.1429005325060.JavaMail.root@telenet.be> <1462417956.33278864.1429006278948.JavaMail.root@telenet.be> <1694615619.33324252.1429007244550.JavaMail.root@telenet.be> <705257384.34192478.1429030200647.JavaMail.root@telenet.be> Message-ID: <832886647.34479840.1429039227158.JavaMail.root@telenet.be> Hello Jim, I tested with Selinux on or off, no difference. Thanks for helping me ou though. I seems Centos7 is eluding a lot of ltsp-people these days. Greetings, Johan ----- Oorspronkelijk bericht ----- Van: "Jim Kinney" Aan: "Support list for open source software in schools." Verzonden: Dinsdag 14 april 2015 18:54:22 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Disable selinux with setenforce 0 and retry. Or you can go digging in the audit log for clues. On Apr 14, 2015 12:51 PM, < johan.vermeulen7 at telenet.be > wrote: Hello All, after copying over more recent images, this changes. Login at first seems to work.Then the screen goes all stripy, and goes back to logon screen. In /var/log/messages: Apr 14 18:40:42 localhost systemd: Created slice user-1000.slice. Apr 14 18:40:42 localhost systemd: Starting Session 3 of user caw. Apr 14 18:40:42 localhost systemd: Started Session 3 of user caw. Apr 14 18:40:42 localhost systemd-logind: New session 3 of user caw. Apr 14 18:40:47 localhost xinetd[1572]: START: ldminfod pid=3564 from=::ffff:192.168.63.130 Apr 14 18:40:47 localhost xinetd[1572]: EXIT: ldminfod status=0 pid=3564 duration=0(sec) Apr 14 18:40:55 localhost systemd-logind: Removed session 3. In /var/log/secure: Apr 14 18:40:42 localhost sshd[3156]: Accepted password for caw from 192.168.63.130 port 47688 ssh2 Apr 14 18:40:42 localhost sshd[3156]: pam_unix(sshd:session): session opened for user caw by (uid=0) Apr 14 18:40:46 localhost sshd[3160]: Received disconnect from 192.168.63.130 : 11: disconnected by user Apr 14 18:40:46 localhost sshd[3156]: pam_unix(sshd:session): session closed for user caw Thanks for any clues. greetings, Johan ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" < johan.vermeulen7 at telenet.be > Aan: "Support list for open source software in schools." < k12osn at redhat.com > Verzonden: Dinsdag 14 april 2015 12:27:24 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. And now I'm seeing this in lightdm log: [root at localhost ~]# tail -f /var/log/lightdm/x-0-greeter.log (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type: assertion 'value != NULL' failed (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_get_type_string: assertion 'value != NULL' failed ** (lightdm-gtk-greeter:868): WARNING **: Unexpected accounts property type for XHasMessages: (null) (lightdm-gtk-greeter:868): GLib-CRITICAL **: g_variant_unref: assertion 'value != NULL' failed ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" < johan.vermeulen7 at telenet.be > Aan: "Support list for open source software in schools." < k12osn at redhat.com > Verzonden: Dinsdag 14 april 2015 12:11:18 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Hello, it could be this is related to Lightdm, the server has mate-desktop installed. I'm also seeing this EM: Apr 14 12:04:36 localhost lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm ----- Oorspronkelijk bericht ----- Van: "johan vermeulen7" < johan.vermeulen7 at telenet.be > Aan: "Support list for open source software in schools." < k12osn at redhat.com > Verzonden: Dinsdag 14 april 2015 11:55:25 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Hello Barry, Hello All, so I'm also experimenting on Centos7. I followed the procedure described by Barry below. The thinclient boots fine, but users or root can't logon. The EM I'm seeing is: Apr 14 11:46:02 localhost sshd[5003]: Connection closed by 192.168.63.130 [preauth] I tried the usual, ltsp-update-sshkeys, Selinux, ... Can anyone help me with this? Many thanks. Johan ----- Oorspronkelijk bericht ----- Van: "Johan Vermeulen" < johan.vermeulen7 at telenet.be > Aan: "Support list for open source software in schools." < k12osn at redhat.com > Verzonden: Vrijdag 2 januari 2015 22:34:53 Onderwerp: Re: [K12OSN] : CentOS 7 & LTSP adventures, success. Barry, thanks for letting us know. I am planning on deploying k12linux on Centos7. Greetings, johan Barry R Cisna < brcisna at eazylivin.net >schreef: >Hello All, > >Thought this may be of interest to some here. >Decided to see how an install of LTSP on CentOS 7 would go,so here are >my findings and long story short LTSP can work on CentOS 7! > >1) Fresh install of CentOS 7 >2) Do the standard install of the ltsp repo.rpm >3)" yum -y install ltsp-server", fails with three dependencies not >fulfilled. >4) add the epel & repoforge repos., still fails with xorg-x11-xdm not >found >5) find this rpm on net in i386 and force install >6) ltsp-server now installs fine on server, and ltsp-build-client builds >fine as well. >7) thin client boots but fails login, same as a recent CentOS 6.6 & LTSP >with root trying to get a login from ssh right behind the standard user? > >Plan B: > >1) rename /tftpboot/ltsp and /opt/ltsp to ltsp_OLD on CentOS 7 server. > >1a) from a working 8 month old install of LTSP on CentOS 6.6 on server >rsync -avz /var/lib/tftpboot/ltsp remoteCentOS7:/var/lib/tftpboot/ >rsync -avz /opt/ltsp remoteCentOS7:/opt/ >2a) restart nfs & xinetd services >3a) ltsp-update-sshkeys & ltsp-update-kernels >4a) boot client - login success! >5a) usb sticks & sound works. >6a) #optional, install latest google chrome on server with, > http://tecadmin.net/install-google-chrome-in-centos-rhel-and-fedora/ > >Not necessary but all of the recent ltsp/k12linux server gets frequent >flash-plugin/plugin-container crashes using latest Firefox, >flash-plugin . >This is a known problem running flash-plugin on remote displays. > >Hope this may help someone. > >Barry > > > > >_______________________________________________ >K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn >For more info see < http://www.k12os.org > _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see < http://www.k12os.org > _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see < http://www.k12os.org > _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see < http://www.k12os.org > _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see < http://www.k12os.org > _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see < http://www.k12os.org > _______________________________________________ K12OSN mailing list K12OSN at redhat.com https://www.redhat.com/mailman/listinfo/k12osn For more info see -------------- next part -------------- An HTML attachment was scrubbed... URL: From burke at thealmquists.net Thu Apr 16 01:57:46 2015 From: burke at thealmquists.net (Burke Almquist) Date: Wed, 15 Apr 2015 20:57:46 -0500 Subject: [K12OSN] LTSP slowness problem In-Reply-To: References: Message-ID: <3EBA17BF-73E0-4402-943D-670D11B09882@thealmquists.net> On Apr 14, 2015 7:01 AM, "Kenneth Lundstr?m" wrote: > Hello everyone, > > I have a strange problem that I have been trying to solve for months. > > A client have a setup of 6-7 LTSP terminals and one server. Because of room structure we need to have 3 switches, all are 1 GB. Server has one 1GB network card. As I couldn't get LTSP working on CentOS 7 I switched to Ubuntu. > > Problem is the slowness of the clients. If 1-2 are working everything is fine, but when we have like 5 working the same time we get slowness, like when writing an email in Thunderbird it just stops showing the writing on the screen. > > I swtich away from KDE to LightDM (I think was the name), still same. > > One thing we think might be the problem is the filemanager. When somebody open filemanager and looks at the folder with like 100 files everything stop. All files are on the same server as LTSP is running. > > Any ideas where to look for the problem and solving it. > > > Kenneth > How much memory does your server have? From johan.vermeulen7 at telenet.be Tue Apr 21 13:15:49 2015 From: johan.vermeulen7 at telenet.be (johan.vermeulen7 at telenet.be) Date: Tue, 21 Apr 2015 15:15:49 +0200 (CEST) Subject: [K12OSN] Centos7 : set mate as default session manager Message-ID: <1958232183.51013220.1429622149918.JavaMail.root@telenet.be> Hello All, I have K12Linux running in Centos7/Mate. But I have to manualy switch the session manager to Mate on the login screen. How can I set Mate as system default? Greetings, Johan -------------- next part -------------- An HTML attachment was scrubbed... URL: From radek at bursztynowski.waw.pl Tue Apr 21 21:54:38 2015 From: radek at bursztynowski.waw.pl (Radek Bursztynowski) Date: Tue, 21 Apr 2015 23:54:38 +0200 Subject: [K12OSN] Centos7 : set mate as default session manager In-Reply-To: <1958232183.51013220.1429622149918.JavaMail.root@telenet.be> References: <1958232183.51013220.1429622149918.JavaMail.root@telenet.be> Message-ID: <1429653278.6671.4.camel@alpaga.bursztynowski.waw.pl> Hello, I don't use CentOS 7, but I tested it on Fedora 20 ? it works. Create or edit if exists /home/user/.dmrc file. Store inside the following line: Session=mate Comment eventual other ?Session=? entry. Be sure that .dmrc file has 644 mode. The second one solution is proper entry in lts.conf file: LDM_SESSION = mate xfce gnome kde If "mate" keeps the first position "mate" will be default. Best regards, Radek --------- Dnia 2015-04-21, wto o godzinie 15:15 +0200, johan.vermeulen7 at telenet.be pisze: > Hello All, > > > > I have K12Linux running in Centos7/Mate. > > > > But I have to manualy switch the session manager to Mate on the login > screen. > > How can I set Mate as system default? > > > > Greetings, Johan > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see From johan.vermeulen7 at telenet.be Fri Apr 24 13:51:02 2015 From: johan.vermeulen7 at telenet.be (johan.vermeulen7 at telenet.be) Date: Fri, 24 Apr 2015 15:51:02 +0200 (CEST) Subject: [K12OSN] Centos7 : set mate as default session manager In-Reply-To: <1429653278.6671.4.camel@alpaga.bursztynowski.waw.pl> References: <1958232183.51013220.1429622149918.JavaMail.root@telenet.be> <1429653278.6671.4.camel@alpaga.bursztynowski.waw.pl> Message-ID: <922344810.59496122.1429883462701.JavaMail.root@telenet.be> Radek, thanks very much for the help, that indeed works. greetings, Johan ----- Oorspronkelijk bericht ----- Van: "Radek Bursztynowski" Aan: "johan vermeulen7" Cc: "Support list for open source software in schools." Verzonden: Dinsdag 21 april 2015 23:54:38 Onderwerp: Re: [K12OSN] Centos7 : set mate as default session manager Hello, I don't use CentOS 7, but I tested it on Fedora 20 ? it works. Create or edit if exists /home/user/.dmrc file. Store inside the following line: Session=mate Comment eventual other ?Session=? entry. Be sure that .dmrc file has 644 mode. The second one solution is proper entry in lts.conf file: LDM_SESSION = mate xfce gnome kde If "mate" keeps the first position "mate" will be default. Best regards, Radek --------- Dnia 2015-04-21, wto o godzinie 15:15 +0200, johan.vermeulen7 at telenet.be pisze: > Hello All, > > > > I have K12Linux running in Centos7/Mate. > > > > But I have to manualy switch the session manager to Mate on the login > screen. > > How can I set Mate as system default? > > > > Greetings, Johan > > _______________________________________________ > K12OSN mailing list > K12OSN at redhat.com > https://www.redhat.com/mailman/listinfo/k12osn > For more info see