[K12OSN] : CentOS 7 & LTSP adventures, success.

Tue Apr 14 19:20:27 UTC 2015

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" <jim.kinney at gmail.com> 
Aan: "Support list for open source software in schools." <k12osn at redhat.com> 
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 
> 
> 
> 
> 
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