Directly copied from
https://www.reddit.com/r/sysadmin/comments/8f10mc/command_sysunconfig_alternative_for_centos_7/
posted by user: ckozler
I posted, just to get an idea.
Command sys-unconfig alternative for Centos 7
-------------------------
I just made my own. I hated that they removed that
#!/usr/bin/env bash
#
# This is the sys_prep script
# It will clear out all non-revelent information for a new VM
#
# 1. Force logs to rotate and clear old.
/usr/sbin/logrotate -f /etc/logrotate.conf
/bin/rm -f /var/log/*-20* /var/log/*.gz
#
# 2. Clear the audit log & wtmp.
/bin/cat /dev/null > /var/log/audit/audit.log
/bin/cat /dev/null > /var/log/wtmp
#
# 3. Remove the udev device rules.
/bin/rm -f /etc/udev/rules.d/70*
#
# 4. Remove the traces of the template MAC address and UUIDs.
/bin/sed -i '/^\(HWADDR\|UUID\|IPADDR\|NETMASK\|GATEWAY\)=/d' /etc/sysconfig/network-scripts/ifcfg-e*
#
# 5. Clean /tmp out.
/bin/rm -rf /tmp/*
/bin/rm -rf /var/tmp/*
#
# 6. Remove the SSH host keys.
/bin/rm -f /etc/ssh/*key*
#
# 7. Remove the root user's shell history.
/bin/rm -f /root/.bash_history
unset HISTFILE
#
# 8. Set hostname to localhost
/bin/sed -i "s/HOSTNAME=.*/HOSTNAME=localhost.localdomain/g" /etc/sysconfig/network
/bin/hostnamectl set-hostname localhost.localdomain
#
# 9. Remove rsyslog.conf remote log server IP.
/bin/sed -i '/1.1.1.1.1/'d /etc/rsyslog.conf
# 10. Clear out the osad-auth.conf file to stop dupliate IDs
#
rm -v /etc/sysconfig/rhn/osad-auth.conf
rm -v /etc/sysconfig/rhn/systemid
# clean hosts
#hostname_check=$(hostname)
#if ! [[ "${hostname_check}" =~ "local" ]]; then
# cp -v /etc/hosts /etc/hosts.sys_prep
# sed -i "s,$(hostname),,g" /etc/hosts
# sed -i "s,$(hostname -s),,g" /etc/hosts
#fi
rm -v /root/.ssh/known_hosts
#
# 11. Shutdown the VM. Poweron required to scan new HW addresses.
poweroff
#
--------------------------------
Reply by
clearing_sky
-Use Cloud-Init. It should handle all the things you need to do, but a kickstart would probably be a better idea if you are doing a physical deployment.
No comments:
Post a Comment