I'm sorry. I should take my time when writing messages. My DHCP server has static entries for this group of machines (both name and IP address). When I source /etc/sysconfig/network, $HOSTNAME is set. I then use host to lookup the IP address (not hostname). I script is: Source /etc/sysconfig/network IPADDR=`host $HOSTNAME | cut -f 4 -d ' '` echo ... Ryan -----Original Message----- From: Pete Nesbitt [mailto:pete@xxxxxxxxx] Sent: Thursday, July 15, 2004 9:32 AM To: golharam@xxxxxxxxx; General Red Hat Linux discussion list Subject: Re: Hostname and IP address during kickstart On July 15, 2004 06:07 am, Ryan Golhar wrote: > Hi Peter, > > Yes, that's almost exactly what I have. It looks like the machine > name is set to $HOSTNAME. I'm retrieving the IP address from > /etc/sysconfig/network. I came up with this. I need to add the the > full name to the list. > > Source /etc/sysconfig/network > IPADDR=`hostname $HOSTNAME | cut -f 4 -d ' '` > echo "127.0.0.1 localhost.localdomain localhost" > /etc/hosts > echo "$IPADDR $HOSTNAME.umdnj.edu $HOSTNAME" >> /etc/hosts > > > ----- > Ryan Golhar > Computational Biologist > The Informatics Institute at > The University of Medicine & Dentistry of NJ > > Phone: 973-972-5034 > Fax: 973-972-7412 > Email: golharam@xxxxxxxxx Ryan, If you want to use $HOSTNAME, look at 'man hostname' it has a -f and -s option for short or long (fqdn) option. I don't see how "IPADDR=`hostname $HOSTNAME | cut -f 4 -d ' '`" works, that not going to give you an IP address. Also, how are you getting an IP ftrom /etc/sysconfig/network,if it's dhcp, there should be no IP address in there (nor is it going to be in /etc/sysconfig/network-scripts/ifcfg-eth0) Pete > > -----Original Message----- > From: Pete Nesbitt [mailto:pete@xxxxxxxxx] > Sent: Wednesday, July 14, 2004 10:54 PM > To: golharam@xxxxxxxxx; General Red Hat Linux discussion list > Subject: Re: Hostname and IP address during kickstart > > On July 14, 2004 09:30 am, Ryan Golhar wrote: > > I have a bunch of machines that I kickstart. They all use DHCP to > > obtain their hostname and IP address. The names are address are all > > static (in dhcpd.conf). > > > > Currently, in /etc/hosts on these machines, their hostname is set to > > 127.0.0.1 and this interferes with PVM. I need to set their host > > name > > > > to their correct IP address in /etc/hosts. What is the easiest way > > of > > > > doing this during %post in kickstart? > > > > Ryan > > Hi Ryan, > Here is a little shell script that will overwrite the existing > /etc/hosts file with the new IP/hostname (as well as 127...). I have > tested it in a dummy > file. It needs to be run as root. > > If you have static entries, you need to add them into the script or > you will lose them. > > > #!/bin/bash > # this ONLY WORKS IF there are no other entries in hosts!! > # it will overwrite anything in the hosts file! > > HOSTS="/etc/hosts" > TEMP_HOSTS="/tmp/hosts.tmp" > NIC="eth0" > IP="`ifconfig $NIC | grep inet | cut -d : -f 2 | cut -d \ -f 1`" > FULL_NAME="`uname -n`" SHORT_NAME="`uname -n|cut -d. -f1`" > > echo "127.0.0.1 localhost.localdomain localhost" > $TEMP_HOSTS > echo "$IP $FULL_NAME $SHORT_NAME" >> $TEMP_HOSTS > # add more static entries if needed like this: > #echo "xxx.xxx.xxx.xxx somehost.domain.com somehost" >> $TEMP_HOSTS > > cat $TEMP_HOSTS > $HOSTS > #end > > Hope that helps > -- > Pete Nesbitt, rhce -- Pete Nesbitt, rhce -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
