Terraform concat function

https://www.terraform.io/language/functions/concat

 .../...
 egress {
   cidr_blocks = concat([
     data.aws_vpc.this.cidr_block,
     ], [
     "10.0.0.0/20",
   ])
   from_port = 5432
   protocol  = "tcp"
   to_port   = 5432
 }
 .../...

Related

• Concatenate
• Terraform security-group module

See also

• Terraform functions, Terraform collection functions: tolist, toset, length, sum, file, join, depends_on, zipmap, replace, lookup, read files, concat, merge, templatefile, for_each, format, element, slice, try, filebase64, upper, filemd5, coalesce, formatlist, flatten, sensitive, tonumber, jsondecode, yamldecode, pathexpand