shell-计算虚拟机创建时间

因为要验证虚拟机创建时间，所以写了下面一个脚本

#!/bin/bash
###########################################################################################
#
# This tool is used to test vm   create time
#
###########################################################################################

VM_NUM=$1
IMAGE_ID=$2

NET_ID=7baf14cb-d2db-4b52-9874-f120363ace34
FLAVOR_ID=bbc2bc57-42cd-484c-986d-82a5f0d83028
#Use the uuid as the vm name
VM_NAME=`cat /proc/sys/kernel/random/uuid`

#create vm
nova boot  --flavor $FLAVOR_ID    --image $IMAGE_ID   --nic net-id=$NET_ID --max-count $VM_NUM  $VM_NAME

#Record start time
starttime=`date +'%Y-%m-%d %H:%M:%S'`
start_seconds=$(date --date="$starttime" +%s);

#Calculate the creation time for each vm
get_vm_time()

{

local endtime
local end_seconds
local vm_time
local status

while :;
do
status=`nova show $1 | grep "OS-EXT-STS:vm_state" | awk '{print $4}'` 

case $status in
"active")
endtime=`date +'%Y-%m-%d %H:%M:%S'`
end_seconds=$(date --date="$endtime" +%s);
echo "create $1 used "$((end_seconds-start_seconds))  "s"
break
;;
"error")
echo "create $1 failed"
break
;;
esac

done

}

#If you create only one vm ,The name of the virtual machine is : $VM_NAME
if [ $VM_NUM -eq 1 ];then
get_vm_time $VM_NAME >> $VM_NAME.txt &

#If you create multiple vm.Statistics of vm creation time
else
	for i in $(seq 1 ${VM_NUM});do
	get_vm_time $VM_NAME-$i >> $VM_NAME.txt  &

	done
fi