Forward incoming internet traffic to instance alias ip

[kiser]

Hi,

I have a setup when instance has the second interface with private subnet ip assigned to it on creation.

Then I added additional alias ip on interface via api https://cloud.google.com/vpc/docs/configure-alias-ip-ranges

There is a service serving on that particular alias ip and I need to reach it from Internet. How to setup forwarding rule

or any other setup that will allow accepting external incoming traffic on some public ip and then forward it to instance

alias ip?

[James Richard Boa (Google Cloud Platform Support)]

Hello Kiser,

I am not certain on some of the conditions you need for your deployment but the best way to accomplish what you are looking for is deploying a Load Balancer[1] to allow incoming traffic through an external IP.

This is the recommended way to do this due to Instance IP’s being ephemeral and subject to change over time.

You can also create forwarding rules[2] as well and point them to your instance or IP. I have included some documentation below if needed that covers this in more details.

I hope that helps Kiser.

[1] https://cloud.google.com/load-balancing/docs/https/setting-up-https

[2] https://cloud.google.com/load-balancing/docs/forwarding-rules