Accessing AWS EC2 instances through ELB

Question

I\'m trying to set up two instances under an elastic load balancer, but cannot figure out how I\'m supposed to access the instances through the load balancer.

I\'ve set

Answer 1

It sounds like you have everything set up correctly. Are they the same ports going into the loadbalancer as the instance? Or are you forwarding the request to another port?

As a side note, when I configure my loadbalancers I don't generally like to open up my instances on any port for the general public. I only allow the loadbalancer to make requests to those instances. I've noticed in the past that many people will make malicious requests to the IP of the instance trying to find a security breach. I've even seen people trying to brute force login into my windows machines....

To create a security rule only for the loadbalancers run the following commands and remove any other rules you have in the security-group for the port the loadbalancer is using. If you're not using the commandline to run these commands then just let me know which interface you're trying to use and i can try to come up with a sample that will work for you.

elb-create-lb-listeners  --listener "protocol=http, lb-port=, instance-port="
ec2-authorize   -o amazon-elb-sg -u amazon-elb

Back to your question. Like I said, the steps you explained are correct, opening the port on the instance and forwarding the port to the instance should be enough. Maybe you need to post the full configuration of your instance's security group and the loadbalancer so that I can see if there is something else affecting your situation.