Hi all,
I have been trying to set up LDM load balancing between two servers
running ubuntu 9.04 for a couple of days and have failed. I was
following the instructions in the ltsp Manual, #ltsp and information I
found around but did not get there really.
I found out that the get_hosts script needs to be located at
/opt/ltsp/i386/usr/lib/share/get_hosts so fixed that, The following is
my lts.conf and my get_hosts script. For my testing purposes I have
been loading the results so that the 10.0.0.46 server is returned by the
script. The test client I am booting is only listed in the 10.0.0.32
servers dhcp. So I basically want to be able to send a client to the
least conjested server and only have that information in one servers
dhcpd.conf file.
/var/lib/tftpboot/ltsp/i386/lts.conf
[Default]
LDM_DIRECTX=True
LDM_SESSION=/usr/bin/startkde
SOUND = Y
NBD_SWAP=True
DNS_SERVER="10.0.0.38 10.0.0.39"
SEARCH_DOMAIN="ajrs.com"
MY_SERVER_LIST="10.0.0.32 10.0.0.46
/opt/ltsp/i386/usr/lib/ltsp/get_hosts
#!/bin/bash
# Takes a list of servers from the /var/lib/tftpboot/ltsp/i386/lts.conf
and sorts that
# list based on the output of the nc rating of that server.
TMP_LIST=""
for i in $MY_SERVER_LIST; do
let "rank = `nc $i 9571 | grep rating | cut -d: -f2`"
TMP_LIST="$TMP_LIST\n${rank}_$i"
done
echo -e $TMP_LIST | sort -r | cut -d_ -f2
After making these changes I made sure the script was executable(set
755) and called a ltsp-update-image -a i386 on my servers, of course
after making edits in chroot.
This left me at the point where I think the script is running and
returning the proper information. I am able to get to an ldm and enter
a username and password. The screen goes blank immediatly and then goes
back to the ldm. I got this far by doing some ssh-key work on Gadi from
#ltsp's advice.
I did a sudo chroot /opt/ltsp/i386
then I would ssh to the host I wanted to be able to connect to accept
the keys and then logout chroot and sudo ltsp-update-sshkeys and
ltsp-update-image -a i386
When I am doing this I watch the syslog on the server I want to connect
to 10.0.0.46 and can see two connection attempts from the client and
that is all.
Feb 2 14:41:28 ltsp2 ldminfod[16901]: connect from 10.0.2.4 (10.0.2.4)
Feb 2 14:41:28 ltsp2 ldminfod[16904]: connect from 10.0.2.4 (10.0.2.4)
Does anyone have any idea what I am doing wrong here. I personally am
not sure if I did the ssh keys properly but I know no other way.
Thank you.
Grant
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