AWS ELB : indicates in service but no traffic passing through

Question

I have an ELB configured to balance traffic between two rails application layers in Opsworks.

Both EC2 rails app instances are hittable using their direct IP addresses.

<instance1_ip/health
<instance2_ip/health

Both instances are shown as "InService" in the ELB Instance Tab.

When I attempt to use the DNS name of the ELB to hit them nothing happens, the browser simply hangs and times out.

<elb dns name>/health .... times out.

Thanks!

Answer 1

Make sure the security group of ELB allows inbound HTTP/HTTPS traffic from browser's IP.