For cleaning up a VMware VM so that you can provide a template, this script seems to really work.
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#!/bin/bash #stop logging services /sbin/service rsyslog stop /sbin/service auditd stop #install yum-utils *required for package-cleanup process, it's not installed on the minimal install but I believe is present on the infrastructure build yum install yum-utils -y #remove old kernels /bin/package-cleanup --oldkernels --count=1 #remove yum-utils yum remove yum-utils -y #clean yum cache /usr/bin/yum clean all #force logrotate to shrink logspace and remove old logs as well as truncate logs /usr/sbin/logrotate -f /etc/logrotate.conf /bin/rm -f /var/log/*-???????? /var/log/*.gz /bin/rm -f /var/log/dmesg.old /bin/rm -rf /var/log/anaconda /bin/cat /dev/null > /var/log/audit/audit.log /bin/cat /dev/null > /var/log/wtmp /bin/cat /dev/null > /var/log/lastlog /bin/cat /dev/null > /var/log/grubby #remove udev hardware rules - not sure it's needed in CentOS7 but was used in CentOS6 /bin/rm -f /etc/udev/rules.d/70* #remove nic mac addr and uuid from ifcfg scripts - this is a hybrid script that was used in CentOS6 but changed for use with CentOS7 as the network name changed, not sure if it works or not /bin/sed -i '/^\(HWADDR\|UUID\)=/d' /etc/sysconfig/network-scripts/ifcfg-ens* #remove SSH host keys /bin/rm -f /etc/ssh/*key* #remove root users shell history /bin/rm -f ~root/.bash_history unset HISTFILE #remove root users SSH history /bin/rm -rf ~root/.ssh/ |