recover-instance

#!/bin/bash
# script to check and recover instances state

# VARs
INSTANCE_NAME=""
INSTANCE_ID=""
INSTANCE_IPv4=""

INSTANCE_NAME_TO_RECOVER=""
INSTANCE_ID_TO_RECOVER=""
INSTANCE_NAME_IN_ERROR=""

PORT_ID=""
EMPTY_PORTS="false"
ANSWER=""
ANSWER_RECOVER=""

Status=""
PowerState=""
TaskState=""


# GET name
echo 'enter instance name'
read INSTANCE_NAME

# CHECK if exists
nova list | grep $INSTANCE_NAME 
# > /dev/null 2>&1

# GET instance id
INSTANCE_ID=`nova list --all-tenants=1 | grep $INSTANCE_NAME | awk '{print $2}'`

# GET ipv4
echo $INSTANCE_IPv4
INSTANCE_IPv4=`nova show $INSTANCE_ID | grep network | awk '{print $5}'`

# GET port id
PORT_ID=`neutron port-list | grep $INSTANCE_IPv4 | awk '{print $2}'`

# CHECK if port exist's
if [[ $PORT_ID == "" || $PORT_ID == " " ]];then

	PORT_ID="no ports attached!"
	EMPTY_PORTS="true"
fi
	
# SHOW var's
echo ""
echo "instance_name = $INSTANCE_NAME"
echo "instance_id   = $INSTANCE_ID"
echo "ipv4          = $INSTANCE_IPv4"
echo "port_id       = $PORT_ID"

# RECOVER INSTANCE
echo ""
echo "recover instance $INSTANCE_NAME, id=$INSTANCE_ID ? ( yes/no )"
read ANSWER_RECOVER

# recover instance if "yes"
if [[ $ANSWER_RECOVER == "yes"  ]]; then

	echo "reset-state $INSTANCE_ID"
	nova reset-state $INSTANCE_ID
	nova reset-state --active $INSTANCE_ID
	
	echo "stop instance $INSTANCE_ID"
	nova stop $INSTANCE_ID
	
	echo "stop instance $INSTANCE_ID"
	nova start $INSTANCE_ID
else
	echo ""
	echo "exit"
	exit 0
fi

# CHECK IF instance is UP
Status="ACTIVE"
PowerState="running"
TaskState="-"

nova list | grep $INSTANCE_NAME | grep $Status | grep $PowerState | grep $TaskState

if [ $? -eq 0 ]; then
	echo "instance UP :-)"
fi

if [ $? -eq 1 ]; then
	
	echo "Not UP ... or Other State!!!" 
fi

# CHECK instances in some error state
PowerState="Shutdown"
#TaskState="deleting"
nova list --all-tenants=1 | grep ERROR

if [ $? -eq 0 ]; then

	echo "check instances in error state"
	INSTANCE_NAME_IN_ERROR=$(nova list --all-tenants=1 | grep $INSTANCE_ID | awk '{print $4}')
	
	for instance in $INSTANCE_NAME_IN_ERROR; do
		echo "$INSTANCE_NAME_IN_ERROR is in error state"
	done

fi

# THE END
echo ""
exit 0