AWS ALB CNAME support about docker-bind HOT 6 CLOSED

@robertmiles3 can you add the docker run command, so I can see if this is left or right side of the equal sign for EXTRA_HOSTS

from docker-bind.

It's like this...

EXTRA_HOSTS=sandbox.example.com=internal-foo-bar-baz-1234567890.us-east-1.elb.amazonaws.com

But, looking at your code for this, it may not work anyway. It looks like you just resolve the cname to an IP and add that IP to the list. However, AWS ALB's rotate IPs randomly so it likely won't work.

from docker-bind.

What does host internal-foo-bar-baz-1234567890.us-east-1.elb.amazonaws.com output (if you're inside AWS)?

from docker-bind.

It outputs an IP address, but 5 minutes later it could be a different IP address due to high-availability stuff. Per AWS, "Our support for high availability and multiple availability zones, as well as our ability to dynamically scale your load balancing capacity leverages our ability to change the set of IP addresses behind the DNS name from time to time."

from docker-bind.

OK I figured. The above error is due to wrong regex checking the CNAME.

The changing IP addresses is a different issue.

from docker-bind.

Regex fix PR is open. Keep in mind that you need to quote the values for EXTRA_HOSTS like so:

EXTRA_HOSTS='sandbox.example.com=internal-foo-bar-baz-1234567890.us-east-1.elb.amazonaws.com'

from docker-bind.