#!/bin/bash

# removing un-needed packages and apt cache to reduce disk space consumed
apt-get -y autoremove
apt-get -y clean

apt-get purge linux-headers-$(uname -r) build-essential zlib1g-dev libssl-dev libreadline-gplv2-dev

echo "Cleaning up mongodb"
echo "db.dropDatabase()" | mongo pxe

echo "Cleaning up rackhd log"
sudo pm2 flush

echo "Cleaning up apt cache"
rm -f /etc/apt/apt.conf.d/90aptcache

# Removing leftover leases and persistent rules
echo "cleaning up dhcp leases"
rm /var/lib/dhcp/*

# Make sure Udev doesn't block our network
echo "cleaning up udev rules"
rm -f /etc/udev/rules.d/70-persistent-net.rules
mkdir /etc/udev/rules.d/70-persistent-net.rules
rm -rf /dev/.udev/
rm -f /lib/udev/rules.d/75-persistent-net-generator.rules

echo "Adding a 2 sec delay to the interface up, to make the dhclient happy"
echo "pre-up sleep 2" >> /etc/network/interfaces


# Modify the /etc/hosts to align with hostname setting in RackHD/packer/scripts/dep.sh
# by default, the hostname in both /etc/hosts & /etc/hostname are obtained from DHCP server during install.
# in RackHD/packer/scripts/dep.sh, it's modified , but /etc/hosts(127.0.1.1) never get changed.

NEW_HOST_NAME=$(cat /etc/hostname)
sed -i  "/127.0.1.1/,/$/c127.0.1.1\t${NEW_HOST_NAME}" /etc/hosts