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Use a route table with separate (rather than inline) routes

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* Allow users to extend the route table using a data reference
and adding route resources (e.g. unusual peering setups)
* Note: Internally connecting AWS clusters can reduce cross-cloud
flexibility and inhibits blue-green cluster patterns. It is not
recommended
This commit is contained in:
Dalton Hubble
2020-02-25 23:12:19 -08:00
parent f4d260645c
commit 3250994c95
4 changed files with 42 additions and 20 deletions
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17
docs/architecture/aws.md
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@ -79,6 +79,23 @@ resource "aws_security_group_rule" "some-app" {
}
```
## Routes
Add a custom [route](https://www.terraform.io/docs/providers/aws/r/route.html) to the VPC route table.
```tf
data "aws_route_table" "default" {
vpc_id = module.temptest.vpc_id
subnet_id = module.tempest.subnet_ids[0]
}
resource "aws_route" "peering" {
route_table_id = data.aws_route_table.default.id
destination_cidr_block = "192.168.4.0/24"
...
}
```
## IPv6
AWS Network Load Balancers do not support `dualstack`.