Configuring Auto Scaling with Elastic Load Balancing

This example shows how to set up Auto Scaling with Elastic Load Balancing.To set up a load-balanced auto scaling configuration:

If you don’t already have a launch configuration, create one: euscale-create-launch-config MyLaunchConfig --image-id emi-50783D25 --instance-type m1.medium --group mysecuritygroup Create a new auto scaling group associated with a load balancer: euscale-create-auto-scaling-group MyScalingGroup --launch-configuration MyLaunchConfig --load-balancers MyLoadBalancer --availability-zones AcmeAvailabilityZone --min-size 2 --max-size 4 Authorize the security group used by the load balancer for back-end port communication. For example:

$ eulb-describe-lbs --show-long
LOAD_BALANCER	MyLoadBalancer	MyLoadBalancer-408396244283.elb.acme.eucalyptus-systems.com			
{interval=200,target=HTTP:80/,timeout=3,healthy-threshold=2,unhealthy-threshold=4}		AcmeAvailabilityZone		
{protocol=HTTP,lb-port=80,instance-protocol=HTTP,instance-port=80}					
{owner-alias=944786667073,group-name=euca-internal-408396244283-MyLoadBalancer}		
2014-05-28T18:13:17.902Z

euca-authorize mysecuritygroup -u 944786667073 -o euca-internal-408396244283-MyLoadBalancer -p -1 Verify that your Auto Scaling group has been created with a load balancer:

$ euscale-describe-auto-scaling-groups
AUTO-SCALING-GROUP	MyScalingGroup	MyLaunchConfig	AcmeAvailabilityZone	MyLoadBalancer	2	4	2	Default
INSTANCE	i-DFCD0CBC	AcmeAvailabilityZone	InService	Healthy	MyLaunchConfig
INSTANCE	i-B3431043	AcmeAvailabilityZone	InService	Healthy	MyLaunchConfig