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gardener / gardener-extension-provider-aws

Gardener extension controller for the AWS cloud provider (https://aws.amazon.com).
https://gardener.cloud
Apache License 2.0
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Using existings NAT gateways for new shoot cluster #631

Open RandolfWerner opened 2 years ago

RandolfWerner commented 2 years ago

How to categorize this issue?

/area TODO /kind enhancement

What would you like to be added:

When creating a new shoot cluster on AWS it is possible to reuse an already existing VPC instead of creating a new one. Unfortunately it is currently not possible to reuse already existung NAT gateways (see https://sap-btp.slack.com/archives/C9CEBQPGE/p1664546064348629). Please add shoot cluster cretaion options allowing to reuse already existing NAT gateways.

Why is this needed: For multi cluster setups each cluster currently creates its own NAT gateways, which results in creating a lot of unnecessary NAT gateways and correspoding (rare) public IPV4 addresses. In our scenraio we would create up to 24 shoot clusters within a single VPC with up to 4 AZs, resultung in 96 (unnecessary) NAT gateways and corresponding public IP addresses.

gardener-prow[bot] commented 2 years ago

@RandolfWerner: The label(s) area/todo cannot be applied, because the repository doesn't have them.

In response to [this](https://github.com/gardener/gardener-extension-provider-aws/issues/631): >**How to categorize this issue?** > >/area TODO >/kind enhancement > >**What would you like to be added**: > >When creating a new shoot cluster on AWS it is possible to reuse an already existing VPC instead of creating a new one. Unfortunately it is currently not possible to reuse already existung NAT gateways (see https://sap-btp.slack.com/archives/C9CEBQPGE/p1664546064348629). Please add shoot cluster cretaion options allowing to reuse already existing NAT gateways. > >**Why is this needed**: >For multi cluster setups each cluster currently creates its own NAT gateways, which results in creating a lot of unnecessary NAT gateways and correspoding (rare) public IPV4 addresses. In our scenraio we would create up to 24 shoot clusters within a single VPC with up to 4 AZs, resultung in 96 (unnecessary) NAT gateways and corresponding public IP addresses. Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.
gardener-robot commented 2 years ago

@RandolfWerner Label area/todo does not exist.

gardener-robot commented 2 years ago

@rfranzke Label area/todo does not exist.

ludov04 commented 1 year ago

👍
On this, default limit of elastic ip is 5 per account, creating this amount of elastic ip seems unnecessary and wasteful when public IPv4 are becoming so rare

waheedshahani commented 3 months ago

This would be a cool feature to have. This can save on many elastic IPs and provides possibility to create multiple clusters in same account without requesting Elastic IP quotas. Saves costs a lot too.

kon-angelo commented 3 weeks ago

/remove lifecycle/rotten