Mastering GitLab 12

subnet.tf

In this file, the subnets that we can use to create networks are defined. We like to split frontend and backend networks, and then apply rules from SGs to them in order to allow or disallow traffic. The following example is of an entry in that file:

resource "aws_subnet" "public-frontend_az-a" {  availability_zone = "eu-central-1a"   cidr_block = "10.0.11.0/24"   map_public_ip_on_launch = true   vpc_id = "${aws_vpc.gitlabha.id}"   tags {      Name = "Subnet-eu-central-1a-Frontend"   }}

We can see that the availability zone is defined (which can be found at https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#concepts-available-regions):

 availability_zone = "eu-central-1a" 

The specific IP range for this ...