[K12OSN] Guidance on troubleshooting - new RHEL6 + LTSP won't PXE
shawn at redhat.com
Wed Nov 23 21:11:31 UTC 2011
I'm hoping someone can set me in the right direction to troubleshoot a
problem I'm encountering. Ultimately PXE booting doesn't seem to be
working for me.
I loaded two VMs with RHEL6.1 and pulled down the latest updates, then
I followed the Install Guide  without issues. The ltsp-server-tweaks
didn't function for me, but in reading through the mailing list it looks
like this can be over looked (at least temporarily).
Per the instructions I configured ltspbr0 and tried to PXE boot the VM
which is acting as the thin client... no luck. My config is just two
VMs for testing purposes.
I receive the following error:
PXE-E51: No DHCP or proxyDHCP offers were received.
On the server I have two NICs, one giving internet access and the other
for TCs. My config for the server:
After failing to PXE boot I loaded an OS on the thin client and was
able to ping 172.31.100.254, so it doesn't appear to be a connectivity
I went ahead and rebooted my server, then tried to PXE again. No dice.
I ensured DHCP is running and listening for connections:
# chkconfig --list | grep dhcp
ltsp-dhcp 0:off 1:off 2:on 3:on 4:on 5:on 6:off
# service ltsp-dhcp status
dhcpd (pid 1920) is running...
$ netstat -an | fgrep -w 67
udp 0 0.0.0.0:67 0.0.0.0:*
I then ensured tftp was running and enabled
# chkconfig --list | grep tftp
# netstat -an | fgrep -w 69
udp 0 0.0.0.0:69 0.0.0.0:*
From there I installed a TFTP client:
# yum -y install tftp
# cd /tmp
# ftp 172.31.100.254
Connected to 172.31.100.254
Mode: netascii Verbose: off Tracing: off Literal: off
Rexmt-interval: 5 seconds, Max-timeout: 25 seconds
tftp> get ltsp/x86_64/pxelinux.cfg
(the file did download)
I ensured my firewall was stopped
$ sudo service iptables stop; chkconfig iptables off
I even temporarily turned SELinux off
# setenforce 0
Thoughts MORE than welcome! Thanks for any help!
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