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Re: [K12OSN] Trouble with PXE Boot; Fedora 17



Thank you Gianluca,

I followed your instructions (similar to the instructions on the fedora site), and I was initially unable to read the initrd.img file. After a long set of experiments I finally found out that the read permissions were not set properly for the default initrd.img. So, heads up to others who might encounter a similar problem: change the read permission to allow all to read.

So, finally, I passed the "golden gate", but now I have a hardware incompatibility problem. I don't know if I should continue this thread or create a new one. I'll continue, for now:

I'm getting a message that my zero client is unable to boot because "This kernel requires an x86-64 CPU, but only detected an i686 CPU"

My workstation is x86-64 and apparently the new zero client that I bought is i686. Any suggestions how to go about correcting this problem? (does fedora 17 provide i686 compatibility?)

I have to add that my sole interest is to move my workstation to another building (on the same LAN), but I want my zero client set up such that I'm "in front of the workstation", with _full_ access to all capabilities of the x86-64 kernel (there is only myself; this is not a multi-client environment)

Thanks all for your help and suggestions

adrin

On Jan 26, 2013, at 2:52 AM, Gianluca Cecchi wrote:

> On Fri, Jan 25, 2013 at 10:59 PM, Adrin Gharakhani wrote:
>> Thank you Gianluca,
>> 
>> The prompt indeed wanted a "linux" input at the boot prompt. However, it
>> went to the next line and searched for "kernel vmlinuz.ltsp" and couldn't
>> find such a file. I actually did a global search for vmlinuz.ltsp and didn't
>> find it in my system either. So, something is definitely wrong in the fedora
>> installation package. This package was installed directly from the fedora 17
>> repository, so I would have expected it should be self contained, unless the
>> step that involves ltsp-server-tweaks (which I didn't perform because that
>> file is also missing) is a prerequisite.
>> 
>> If anyone can provide a copy of their ltsp-server-tweaks script for centos
>> I'd appreciate it. Perhaps I can use that as a template for fedora
> 
> I currently have not an ltsp environment with Fedora 17 but I do have
> fedora 17 (with ip 192.168.1.141 in example files below) configured to
> allow pxe booting + dhcpd/tftp services necessary to boot kernel over
> the lan.
> In fact I used it to install a Fedora 18 on a server with PXE boot and
> this configuration
> my config
> 
> When I had to provide this kind of installation service I installed
> these packages:
> Jan 19 15:18:45 Installed: 2:xinetd-2.3.15-1.fc17.x86_64
> Jan 19 15:18:45 Installed: tftp-server-5.2-2.fc17.x86_64
> Jan 19 15:21:59 Installed: syslinux-4.05-1.fc17.x86_64
> Jan 19 15:22:54 Installed: 12:dhcp-4.2.4-16.P2.fc17.x86_64
> 
> 
> - xinetd installed and enabled
> [root ope46 ~]# systemctl status xinetd.service
> xinetd.service - Xinetd A Powerful Replacement For Inetd
> Loaded: loaded (/usr/lib/systemd/system/xinetd.service; enabled)
> Active: active (running) since Sat, 26 Jan 2013 10:20:01 +0100; 1h 15min ago
> ...
> 
> In case you have to:
> 
> # systemctl enable xinetd.service
> # systemctl start xinetd.service
> 
> - tftpd service enabled through xinetd
> see your /etc/xinetd.d/tftp
> I changed mine putting
>        disable                 = no
> 
> and restarting xinetd service
> 
> - dhcpd installed and enabled
> [root ope46 ~]# systemctl status dhcpd.service
> dhcpd.service - DHCPv4 Server Daemon
> Loaded: loaded (/usr/lib/systemd/system/dhcpd.service; disabled)
> Active: inactive (dead)
>   Docs: man:dhcpd(8)
>         man:dhcpd.conf(5)
> CGroup: name=systemd:/system/dhcpd.service
> 
> in my case it is disabled because I use it only when necessary not to
> conflict with dnsmasq used by libvirtd providing dhcp functionality to
> its virtual machines
> 
> my dhcpd.conf lines:
> 
> allow booting;
> allow bootp;
> ddns-update-style interim;
> ignore client-updates;
> subnet 192.168.1.0 netmask 255.255.255.0 {
> option subnet-mask 255.255.255.0;
> option broadcast-address 192.168.1.255;
> range dynamic-bootp 192.168.1.200 192.168.1.240;
> next-server 192.168.1.141;
> filename "pxelinux.0"; }
> 
> here the next-server ip is the one of my server providing tftpd..
> 
> - tftp root directory on fedora 17 is /var/lib/tftpboot/ by default
> (it should match entry in  /etc/xinetd.d/tftp
> in my case default one for f17:
>        server_args             = -s /var/lib/tftpboot
> )
> 
> In my case I only need a default entry for tftp clients that I change
> when necessary.
> see docs for mac based ones or more complex configs
> 
> 
> [root ope46 ~]# ll /var/lib/tftpboot/
> total 32032
> -rw-r--r-- 1 root root 27900268 Jan 19 15:52 initrd.img
> -rwxrwxrwx 1 root root    26460 Jan 19 15:34 pxelinux.0
> drwxr-xr-x 2 root root     4096 Jan 20 16:53 pxelinux.cfg
> -rwxr-xr-x 1 root root  4862486 Jan 19 15:52 vmlinuz
> 
> [root ope46 ~]# ll /var/lib/tftpboot/pxelinux.cfg/
> total 8
> -rw-r--r-- 1 root root 153 Jan 20 16:53 default
> 
> vmlinuz and initrd are the Fedora 18 installation ones, downloaded
> over the wire by clients to run anaconda
> the "default" file contains
> 
> [root ope46 ~]# cat /var/lib/tftpboot/pxelinux.cfg/default
> default pxeboot
> timeout 50
> label pxeboot
> kernel vmlinuz
> append initrd=initrd.img repo=http://192.168.1.141/f18
> ks=http://192.168.1.141/anaconda-ks.cfg
> 
> (I also provide httpd service through the next-server server that is
> my tftp server and I install f18 through kickstart)
> 
> Please notice that
> [root ope46 ~]# rpm -qf /var/lib/tftpboot/pxelinux.0
> file /var/lib/tftpboot/pxelinux.0 is not owned by any package
> 
> In fact I copied there from syslinux package:
> cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot
> 
> So, keep from my env what can be of help for your LTSP config.
> 
> HIH,
> Gianluca
> 
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