BASH search for multiple IP's in table - bash

Question

This is a continuation of a script I got help on a few weeks ago. I got everything working, unfortunately the scenario has changed a bit and I'm under a little pressure to get this up and running so I was hoping someone here would help me quickly modify this script.
Here are the basics. The purpose of the script is to recapture a specific floating IP. Due to system limitations, the only way to do this currently is by kinda playing the lottery... The script requests a pool of floating IP's and puts them in a table that looks like this:
+------------+-----------+----------+---------------+
| Ip | Server Id | Fixed Ip | Pool |
+------------+-----------+----------+---------------+
| 10.10.10.1 | | - | floating-pool |
| 10.10.10.2 | | - | floating-pool |
| 10.10.10.3 | | - | floating-pool |
| 10.10.10.4 | | - | floating-pool |
| 10.10.10.5 | | - | floating-pool |
+------------+-----------+----------+---------------+
The script then checks to see if the floating IP we are looking for is in that table, ie has been captured. If not, the script returns all IP's back to the pool and tries again. If the address we are looking for has been captured, then the script drops all other IP's and terminates.
The current version of this script works great to capture a single IP, but now we need it to capture several IP's. Here is the old single IP version:
#!/bin/bash
# Floating IP Reclaimer
################# CONFIG ##################
float="10.10.10.3"
tenantid="blah"
###########################################
# Start
clear
loop=true
if ! [ "$tenantid" = "$OS_TENANT_ID" ]; then
echo "ERROR - Be sure you have sourced the proper tenant ID!"
else
l=1
while $loop; do
printf "Floating IP Reclaimer\n\n"
printf "Requesting address block...\n"
for ((i=1;i<=5;i++));
do
nova floating-ip-create floating-pool > /dev/null 2>&1
done
printf "Checking for matches...\n"
nova floating-ip-list > /tmp/block
while read garbage1 ip garbage2;
do
if [ "$ip" != "$float" ]; then
printf "Releasing $ip\n"
nova floating-ip-delete "$ip" > /dev/null 2>&1
else
loop=false
fi
done < <(tail -n +4 /tmp/block | head -n -1)
printf "\nFloating IP blocks searched: "$l
l=$((l+1))
clear
done
printf "\nFloating IP reclaimed!\n\n"
fi
Thank you everyone for the help. I'm working on a solution as we speak. Unfortunately, sometimes I don't work too well under pressure.
Thanks!

Answer 1

Try this on for size (it hasn't been tested). I know it's not bash, but it should get the job done
#!/usr/bin/python
import os,time
import novaclient.client as nvclient
class FloatingIpManager():
def __init__(self,desired_addresses=[],sleep=5):
self.ips = desired_addresses
self.nova = get_nova_client()
self.sleep = sleep
def get_nova_client(self,env=os.environ):
d = {}
d['username'] = env['username']
d['api_key'] = env['password']
d['auth_url'] = env['auth_url']
d['project_id'] = env['tenant_name']
return nvclient.Client('2',**d)
def get_float(self,address=None,pool=None):
while True:
try:
flip = self.nova.floating_ips.create(pool)
if flip.ip in self.ips or address == None:
return True
else:
self.release_float(flip)
except Exception as e:
print e
time.sleep(self.sleep)
def release_float(self,flip):
return self.nova.floating_ips.delete(flip)
def reclaim_all(self,addresses=None):
if addresses == None:
addresses = self.ips
for i in self.ips:
get_float(i)
if __name__ == '__main__':
nova = get_nova_client()
reclaimer = FloatingIpManager(['192.168.100.1'])
reclaimer.reclaim_all()

Answer 2

Your bash answer. Call it with the IP's you want as arguments, like "reclaimer 192.168.1.1 192.168.1.2 192.168.1.3"
#!/bin/bash
# Floating IP Reclaimer
################# CONFIG ##################
#float="10.10.10.3"
tenantid="blah"
###########################################
# Start
clear
loop=true
let count=$#-1
if ! [ "$tenantid" = "$OS_TENANT_ID" ]; then
echo "ERROR - Be sure you have sourced the proper tenant ID!"
else
l=1
while $loop; do
printf "Floating IP Reclaimer\n\n"
printf "Requesting address block...\n"
for ((i=1;i<=5;i++));
do
nova floating-ip-create floating-pool > /dev/null 2>&1
done
printf "Checking for matches...\n"
nova floating-ip-list > /tmp/block
while read garbage1 ip garbage2;
do
for float in $#; do
if [ "$ip" != "$float" ]; then
printf "Releasing $ip\n"
found=false
else
let i=i+1
continue 2
fi
done
nova floating-ip-delete "$ip" > /dev/null 2>&1
done < <(tail -n +4 /tmp/block | head -n -1)
printf "\nFloating IP blocks searched: "$l
l=$((l+1))
clear
if [ i -eq count ]; then
loop=false
fi
done
printf "\nFloating IP reclaimed!\n\n"
fi