Python interface to Rackspace Cloud Load Balancers

Homepage:	https://github.com/chmouel/python-cloudlb
Credits:	Copyright 2011 Chmouel Boudjnah <chmouel@chmouel.com>
Licence:	BSD

Usage

Not much documentation at the moment but just some quick typical usage scripts you can do with this library. This is based on the latest version from :

http://docs.rackspacecloud.com/loadbalancers/api/clb-devguide-latest.pdf

Create a LoadBalancer:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

node1 = cloudlb.Node(address="10.180.160.131",
                     port=80,
                     condition="ENABLED")


virtualIP1 = cloudlb.VirtualIP(
                 type="PUBLIC")

clb.loadbalancers.create(name="mytestinglb",
                         port=80,
                         protocol="HTTP",
                         nodes=[node1],
                         virtualIps=[virtualIp1])

List LoadBalancers:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
for lb in lbs:
    print "%s has %s node attached with IP addresses:" % (lb.name, len(lb.nodes))
    for ip in lb.virtualIps:
        print "%s/%s" % (ip.ipVersion, ip.address)

List LoadBalancers who have nodes that belong to it:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

ip = '10.1.1.1'
lbs = clb.loadbalancers.search(ip)
for lb in lbs:
    print "%s has %s node attached" % (lb.name, ip))

Get LB by ID:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
clb.authenticate()

lb = clb.loadbalancers.get(LoadBalancerID)

Delete LB:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lb = clb.loadbalancers.get(LoadBalancerID)
lb.delete()

List nodes of a LB:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
lb = lbs[0] #get the first one
nodes=lb.nodes.filter(status='ENABLED')
for node in nodes:
    print node.address

Filter nodes via condition of a LB:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
lb = lbs[0] #get the first one
for node in lb.nodes:
    print node.address

Add a node to a LB:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

newnode =  cloudlb.Node(address="10.180.160.131",
                        port=80,
                        condition="ENABLED")

lbs = clb.loadbalancers.list()
lb = lbs[0] #add to the first one

lb.add_nodes([newnode])

Delete a node from a LB:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
lb = lbs[0] #add to the first one

node = lb.nodes[0] #get the first node

node.delete() #delete it

Update attributes of a node:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #add to the first one

nodeid = 14106
nodes = mylb.nodes
node = mylb.nodes.get(nodeid)
toggle_status = node.condition == "ENABLED" and "DISABLED" or "ENABLED"
node.condition = toggle_status
node.update()

Get weight of a node by using .get():

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #add to the first one

nodeid = 14106
nodes = mylb.nodes
node = mylb.nodes.get(nodeid)
print node.weight

Update attributes on LoadBalancer:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

mylb.protocol = "FTP"
mylb.name = "APrettyNewName"

mylb.update()

Get usage statistics on all LoadBalancers:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

print clb.get_usage()

Get usage statistics on a specfic LoadBalancer:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

print mylb.get_usage()

Get real-time statistics on a specific LoadBalancer:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

print mylb.get_stats()

Get limits on all LoadBalancers:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

print clb.get_limits()

Get Load Balancing Algorithms:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

print clb.get_algorithms()

Get Load Balancing Protocols:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

print clb.get_protocols()

Get current Health Monitor:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

hm_monitor = mylb.healthmonitor()
print hm_monitor.get()

Monitor loadbalancer using simple TCP Connect:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

hm_monitor = mylb.healthmonitor()
hm = cloudlb.healthmonitor.HealthMonitor(
  type="CONNECT",
  delay=10,
  timeout=10,
  attemptsBeforeDeactivation=3)

hm_monitor.add(hm)

Monitor loadbalancer using HTTP(s):

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

hm_monitor = mylb.healthmonitor()
hm = cloudlb.healthmonitor.HealthMonitor(
    type="HTTP", #or HTTPS
    delay=10,
    timeout=10,
    attemptsBeforeDeactivation=3,
    path="/",
    statusRegex="^[234][0-9][0-9]$",
    bodyRegex="testing")
hm_monitor.add(hm)

Delete Health Monitor rule:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

hm_monitor = mylb.healthmonitor()
hm_monitor.delete()

Add http cookie session persistence:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

ss = cloudlb.sessionpersistence.SessionPersistence(persistenceType="HTTP_COOKIE")

ssp = mylb.session_persistence()
ssp.add(ss)

Get session persistence:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

ssp = mylb.session_persistence()
print ssp.get()

Delete session persistence configuration:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb

ssp = mylb.session_persistence()
ssp.delete()

Enable/Disable Connection Logging:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb
cl = mylb.connection_logging()

#Get connection logging status
print cl.get()

#Enable connection logging
cl.enable()

#Disable connection logging
cl.disable()

Access Lists:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb
accesslist = mylb.accesslist()

networkItem1 = cloudlb.accesslist.NetworkItem(
    address="10.20.30.40", type="ALLOW")

networkItem2 = cloudlb.accesslist.NetworkItem(
    address="0.0.0.0/0", type="DENY")

# Allow only 10.20.30.40
accesslist.add([networkItem1, networkItem2])

# List accesslists
print accesslist.list()

# Delete all accesslist
accesslist.delete()

# Delete accesslist by ID
accesslist.delete(id=62)

Custom Error Page:

#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")

lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb
errorpage = mylb.errorpage()

# Display current error page
print errorpage.get()

# Change the error page
errorpage.add('<html><body><h1>Error</h1></body></html>')

# Revert to the default error page
errorpage.delete()

LICENSE

See COPYING for license information. Copyright © 2011, Rackspace US, Inc.

Author

Chmouel Boudjnah <chmouel@chmouel.com>

License

jstraw/python-cloudlb

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