Egress traffic from gitlab.com should come from a known list of IPs

Status

2021-YY-XX - Current status

DRI

GitLab username of the DRI

Overview

Currently the ephemeral nature of our GCP infrastructure makes it rather difficult for the security minded to open the appropriate firewall rules for the GitLab.com infrastructure egress traffic.

Utilize this issue to see what we can do to ease this burden.

Example: https://cloud.google.com/vpc/docs/special-configurations#multiple-natgateways

Reference: https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/434

When complete, need to update IP range documentation

Reference

1. enumerated list of any reference links for a reader building context