We'll need to configure DNS to point to our Deis cluster.
Normally we would use a real domain name and create an appropriate DNS record for Deis, but for this workshop we will fake it by using xip.io and one of the IP addresses for the ELB.
The ELB hostname can be found in the output of the ./provision-ec2-cluster.sh command, and will look like
deis-DeisWebELB-<id>.us-east-1.elb.amazonaws.com.
Using a custom domain
To setup a custom domain for real-world usage, you simply point a CNAME record to the ELB, for example lb.example.org.
$ dig lb.example.org CNAME +short
deis-deiswebelb-<id>.us-east-1.elb.amazonaws.com.
Using xip.io
xip.io is a free service that automatically resolves some-string.<elb-IP>.xip.io
to the IP in the hostname.
While it's not recommended to create A records for AWS ELBs, as the actual IPs can change, for short-lived clusters, this should work just fine. First, we need to get an IP for our ELB:
$ host deis-deiswebelb-<id>.us-east-1.elb.amazonaws.com
deis-deiswebelb-<id>.us-east-1.elb.amazonaws.com has address <ip>
deis-deiswebelb-<id>.us-east-1.elb.amazonaws.com has address <ip>
Then, we can compose a domain as some-string.<elb-IP>.xip.io. For example:
$ dig <some-string>.<elb-IP>.xip.io A +short
<ip>