Well, I’ve been fiddling around with SLES and openSUSE VMware templates. I know it’s a stupid idea when you have a PXE server from which you could install this in a matter of minutes (seriously the SLES PXE installation takes about 5 minutes).
However, when dealing with DMZ’s (yeah, they exist!) you usually don’t have any PXE servers there. So I decided to go with simple VMware templates (like we do with Windows already), but had to iron out a few kinks.
- There’s no way to run a set of scripts after the deployment scripts from VMware have been run
- The hostname isn’t changed everywhere (/etc/postfix/main.cf for example)
So of I went and wrote a short (70 line ..) init script, which will do exactly that.
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#!/bin/sh # # /etc/init.d/template-deploy # ### BEGIN INIT INFO # Provides: template-deploy # Required-Start: $sshd # Should-Start: # Required-Stop: $sshd # Should-Stop: # Default-Start: 2 3 5 # Default-Stop: # Short-Description: Makes the final adjustments when deployed a template # Description: VMware has a few kinks when deploying a linux template. # This init script will handle those kinks and # incorporate the necessary changes to the final system # after the VMware customizations are done. ### END INIT INFO # Source LSB init functions . /etc/rc.status rc_reset LOGFILES="/var/log/messages* /var/log/mail* /var/log/zypper.log /var/log/localmessages /var/log/warn /var/log/NetworkManager /var/log/zypp/history /var/log/clamd.log /var/log/cksquid.log /var/log/ftp-proxy.log* /var/log/apache2/*_log /var/log/squid/*.log /var/log/pbl.log" case "$1" in start) # Read /etc/HOSTNAME and check it against /etc/template if [ -f /etc/HOSTNAME -a -f /etc/template ] ; then SYS_HOSTNAME="`cat /etc/HOSTNAME`" TPL_HOSTNAME="`cat /etc/template`" # Only if the hostname isn't like the template name # the script will actually run. if [ "$SYS_HOSTNAME" != "$TPL_HOSTNAME" ] ; then sed -i "s/$TPL_HOSTNAME/$SYS_HOSTNAME/g" \ /etc/postfix/main.cf /etc/hosts \ /etc/HOSTNAME bash /var/adm/autoinstall/scripts/configure_users.sh # Stop services for logfile deletion. systemctl stop postfix systemctl stop syslog # Remove log files for file in $LOGFILES; do rm -f $file done rm -f /var/log/YaST2/* rm -rf /var/log/vmware-imc # Remove the init script chkconfig -d template-deploy rm -f /etc/template rm -f /etc/init.d/template-deploy fi fi rc_status -v ;; *) ;; esac rc_exit |
You’ll also need to create a file (/etc/template), which’ll hold the template’s hostname and will be used for the comparison if VMware’s post-processing is already finished.