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<title>Python interface to Rackspace Load Balancer as a Service product</title>
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<body>
<div class="document" id="python-interface-to-rackspace-load-balancer-as-a-service-product">
<h1 class="title">Python interface to Rackspace Load Balancer as a Service product</h1>
<table class="docinfo" frame="void" rules="none">
<col class="docinfo-name" />
<col class="docinfo-content" />
<tbody valign="top">
<tr class="field"><th class="docinfo-name">Homepage:</th><td class="field-body"><a class="reference external" href="https://github.com/chmouel/python-cloudlb">https://github.com/chmouel/python-cloudlb</a></td>
</tr>
<tr class="field"><th class="docinfo-name">Credits:</th><td class="field-body">Copyright 2011 Chmouel Boudjnah <<a class="reference external" href="mailto:chmouel@chmouel.com">chmouel@chmouel.com</a>></td>
</tr>
<tr class="field"><th class="docinfo-name">Licence:</th><td class="field-body">BSD</td>
</tr>
</tbody>
</table>
<div class="section" id="usage">
<h1>Usage</h1>
<p>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 :</p>
<p><a class="reference external" href="http://docs.rackspacecloud.com/loadbalancers/api/clb-devguide-latest.pdf">http://docs.rackspacecloud.com/loadbalancers/api/clb-devguide-latest.pdf</a></p>
<p>Create a LoadBalancer:</p>
<pre class="literal-block">
#!/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])
</pre>
<p>List LoadBalancers:</p>
<pre class="literal-block">
#!/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)
</pre>
<p>Get LB by ID:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
clb.authenticate()
lb = clb.loadbalancers.get(LoadBalancerID)
</pre>
<p>Delete LB:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
lb = clb.loadbalancers.get(LoadBalancerID)
lb.delete()
</pre>
<p>List nodes of a LB:</p>
<pre class="literal-block">
#!/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
</pre>
<p>Filter nodes via condition of a LB:</p>
<pre class="literal-block">
#!/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
</pre>
<p>Add a node to a LB:</p>
<pre class="literal-block">
#!/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])
</pre>
<p>Delete a node from a LB:</p>
<pre class="literal-block">
#!/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
</pre>
<p>Update attributes of a node:</p>
<pre class="literal-block">
#!/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()
</pre>
<p>Get weight of a node by using .get():</p>
<pre class="literal-block">
#!/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
</pre>
<p>Update attributes on LoadBalancer:</p>
<pre class="literal-block">
#!/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()
</pre>
<p>Get usage statitiscs on all LoadBalancers:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
print clb.get_usage()
</pre>
<p>Get usage statitiscs on a specfic LoadBalancer:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb
print mylb.get_usage()
</pre>
<p>Get limits on all LoadBalancers:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
print clb.get_limits()
</pre>
<p>Get Load Balancing Algorithms:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
print clb.get_algorithms()
</pre>
<p>Get Load Balancing Protocols:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
print clb.get_protocols()
</pre>
<p>Get current Health Monitor:</p>
<pre class="literal-block">
#!/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()
</pre>
<p>Monitor loadbalancer using simple TCP Connect:</p>
<pre class="literal-block">
#!/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)
</pre>
<p>Monitor loadbalancer using HTTP(s):</p>
<pre class="literal-block">
#!/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)
</pre>
<p>Delete Health Monitor rule:</p>
<pre class="literal-block">
#!/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()
</pre>
<p>Add http cookie session persistense:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb
ss = cloudlb.sessionpersistense.SessionPersistense(persistenceType="HTTP_COOKIE")
ssp = mylb.session_persistense()
ssp.add(ss)
</pre>
<p>Get session persistence:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb
ssp = mylb.session_persistense()
print ssp.get()
</pre>
<p>Delete session persistense configuration:</p>
<pre class="literal-block">
#!/usr/bin/python
import cloudlb
clb = cloudlb.CloudLoadBalancer("username", "apikey","chicago")
lbs = clb.loadbalancers.list()
mylb = lbs[0] #first lb
ssp = mylb.session_persistense()
ssp.delete()
</pre>
<p>Enable/Disable Connection Logging:</p>
<pre class="literal-block">
#!/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()
</pre>
<p>Access Lists:</p>
<pre class="literal-block">
#!/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)
</pre>
</div>
<div class="section" id="license">
<h1>LICENSE</h1>
<p>See COPYING for license information. Copyright © 2011, Rackspace US, Inc.</p>
</div>
<div class="section" id="author">
<h1>Author</h1>
<p>Chmouel Boudjnah <<a class="reference external" href="mailto:chmouel@chmouel.com">chmouel@chmouel.com</a>></p>
</div>
</div>
</body>
</html>