From e38909bce0bdba03628724e27046975cc675495c Mon Sep 17 00:00:00 2001
From: Frank Brehm <frank.brehm@pixelpark.com>
Date: Thu, 16 Nov 2023 17:50:50 +0100
Subject: [PATCH] Adding script files/postinstall

---
 files/postinstall | 136 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 files/postinstall

diff --git a/files/postinstall b/files/postinstall
new file mode 100644
index 0000000..ef3ec2e
--- /dev/null
+++ b/files/postinstall
@@ -0,0 +1,136 @@
+#!/bin/bash
+
+printf "Current host FQDN: "
+hostname -f
+
+echo
+echo "All installed packages:"
+echo "-----------------------"
+rpm -qa | sort
+
+echo
+echo "All filesystems:"
+echo "----------------"
+df -m -a -T
+
+for ks_cfg in "/root/original-ks.cfg" "/root/anaconda-ks.cfg" ; do
+    echo
+    echo "-----------------------------------------------------------"
+    if [ -f "${ks_cfg}" ] ; then
+        echo "Moving ${ks_cfg} => /var/log/anaconda/ ..."
+        mv -v "${ks_cfg}" /var/log/anaconda/
+    else
+        echo "File ${ks_cfg} not found." >&2
+    fi
+done
+
+echo
+echo "Removing /var/log/anaconda ..."
+echo "------------------------------"
+rm -rfv /var/log/anaconda
+
+if [ -x /sbin/subscription-manager ] ; then
+    echo
+    echo "Unregistring current host from Red Hat Subscription Management ..."
+    /sbin/subscription-manager unregister --no-progress-messages
+    sleep 2
+fi
+
+echo
+for f in '/var/log/audit/audit.log'
+         '/var/log/boot.log'
+         '/var/log/cloud-init.log'
+         '/var/log/cloud-init-output.log'
+         '/var/log/cron'
+         '/var/log/dnf*.log'
+         '/var/log/grubby*'
+         '/var/log/hawkey.log'
+         '/var/log/messages'
+         '/var/log/secure'
+         '/var/log/tuned/tuned.log'
+         '/var/log/wtmp'
+         '/var/log/vmware-*.log*'
+         '/var/log/yum*.log'
+         '/var/log/rhsm/*.log'
+         ; do
+    if [ -f "${f}" ] ; then
+        echo "Truncating ${f} ..."
+        cp /dev/null "${f}"
+    fi
+done
+
+echo
+echo "-----------------------------------------------------------"
+echo "Clearing journal log ..."
+journalctl --flush
+journalctl -m --vacuum-time=1s
+
+echo
+echo "-----------------------------------------------------------"
+echo "Truncating /var/log/*tmp ..."
+cp -v /dev/null /var/log/btmp
+cp -v /dev/null /var/log/wtmp
+
+echo
+echo "-----------------------------------------------------------"
+echo "Remaining files in /var/log:"
+find /var/log -type f | xargs ls -l -S
+
+echo
+echo "-----------------------------------------------------------"
+echo "Current network configuration:"
+echo
+/usr/sbin/ip address show
+echo
+echo "Current routing configuration:"
+echo
+/usr/sbin/ip route show
+
+echo
+echo "NetworkManager connections:"
+echo
+/bin/nmcli connection show
+
+echo
+echo "-----------------------------------------------------------"
+echo "Networking config files:"
+echo
+echo "Searching for file like /etc/sysconfig/network-scripts/ifcfg-* ..."
+for f in /etc/sysconfig/network-scripts/ifcfg-* ; do
+    if [ ! -f "${f}" ] ; then
+        continue
+    fi
+    base_name=$( basename "${f}" )
+    if [ "${base_name}" = 'ifcfg-lo' ] ; then
+        continue
+    fi
+    echo "${f}:"
+    ls -l "${f}"
+    echo
+    echo "Content:"
+    echo "---------- snip ----------"
+    cat "${f}"
+    echo "---------- snip ----------"
+    echo "Removing ${f} ..."
+    rm -vf "${f}"
+done
+echo
+echo "DHCP leases:"
+echo
+echo "Searching for file like /var/lib/dhclient/*.leases ..."
+for f in /var/lib/dhclient/*.leases ; do
+    if [ ! -f "${f}" ] ; then
+        continue
+    fi
+    echo "${f}:"
+    ls -l "${f}"
+    echo
+    echo "Content:"
+    echo "---------- snip ----------"
+    cat "${f}"
+    echo "---------- snip ----------"
+    echo "Removing ${f} ..."
+    rm -vf "${f}"
+done
+
+# vim: ts=4 list
-- 
2.39.5