NGINX has a recommended HA load balancing solution that works in combination with the new AWS Network Load Balancer.
Alessandro Fael Garcia
NGINX has now created officially supported Ansible Roles for the open source NGINX software and NGINX Plus available on Ansible Galaxy
High-availability, all-active, auto-scaling solutions are the new DevOps normal. Use Packer, Terraform, and NGINX Plus to implement on GCE.