clear
echo "###################################################################################################################"
echo "###################################################################################################################"
echo "## DO NOT CONTINUE unless you know what you are doing                                                            ##"
echo "## This script tries to prepare a host that has been forgotten for reintroduction to a pool                      ##"
echo "## It is intended for hosts with no local storage used to serve VMs - ALL pool state information will be erased  ##"
echo "## Ethernet and management interfaces will be reset with new values entered here. Host will reboot when finished ##"
echo "## Control + C to exit or <Enter> to continue                                                                    ##"
echo "###################################################################################################################"
echo "###################################################################################################################"
read n1


HOST_MODE=`xe host-is-in-emergency-mode`
if [ $HOST_MODE = "true" ]
then
	echo "Host is in emergency mode - attempt resetting host? Enter [ yes or no ]"
	read CONTINUE
else
	echo "Host is not in emergency mode - Host may be recovered by alternate means. continue? Enter [ yes or no ]"
	read CONTINUE
fi

if [ $CONTINUE = "no" ]
then
	exit 1
elif [ $CONTINUE = "yes" ]
then
	echo "Continuing"
else
	echo "Invalid Input - exiting"
	exit 1
fi

NOW=`date +"%g%m%d_%H%M%S"`
echo "Moving  XAPI state files to /var/xapi/state.db.old$NOW /var/xapi/local.db.old$NOW"
mv /var/xapi/state.db /var/xapi/state.db.old$NOW && mv /var/xapi/local.db /var/xapi/local.db.old$NOW
if [ $? = 0 ]; then
        echo "Successfully moved XAPI state files"
fi

echo "Switching to master"

echo master > /etc/xensource/pool.conf
if [ $? = 0 ]; then
	echo "Successfully set host mode to master"
fi	

echo "Enter new IP information for host. Host will reset when done"
echo "Enter new IP address"
read IP
echo "Enter subnet mask"
read NETMASK
echo "Enter default gateway"
read GATEWAY
echo "Enter DNS server IP"
read DNS
echo "Enter mode - static or dhcp"
read MODE

xe-reset-networking --ip=$IP --netmask=$NETMASK --gateway=$GATEWAY --dns=$DNS --mode=$MODE