Allow NodeGroup/ASG targeting for ?LB instances about cloud-provider-aws

[ari-becker]

An additional gotcha that popped up for me:

Let's say that you have 450 nodes and a service that you'd like to expose with an external load balancer.
If you expose a single port on the service - a load balancer is created that targets all 450 servers, and it works.
If you expose multiple additional ports - despite the number of servers not changing, each additional port is considered a whole new target. So if you expose three ports you now have 3 * 450 = 1350 targets, which is above the limit, and AWS will simply refuse to add the listeners for the new ports, complaining about TooManyTargets.

[foobarfran]

This would be super useful.
I can contribute with a pull request for this feature if it helps

[leakingtapan]

/reopen

[fejta-bot]

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/lifecycle stale

[fejta-bot]

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/lifecycle rotten

[bassco]

Anyone able to read through this and provide feedback?

[fejta-bot]

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/close

[k8s-ci-robot]

@fejta-bot: Closing this issue.

In response to this:

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
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/close

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[ari-becker]

/reopen

Not sure why this was allowed to close - this is a must-have feature for large clusters where the number of nodes in the cluster reaches the quota for the number of targets permitted per load balancer. Scaling further requires limiting the load balancer's targets to a specific subset of servers, and configuring the deployment/statefulset to only schedule on those nodes. Currently the only workaround is to create the loadbalancer by hand outside of Kubernetes.

[k8s-ci-robot]

@ari-becker: You can't reopen an issue/PR unless you authored it or you are a collaborator.

In response to this:

/reopen

Not sure why this was allowed to close - this is a must-have feature for large clusters where the number of nodes in the cluster reaches the quota for the number of targets permitted per load balancer. Scaling further requires limiting the load balancer's targets to a specific subset of servers, and configuring the deployment/statefulset to only schedule on those nodes. Currently the only workaround is to create the loadbalancer by hand outside of Kubernetes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ari-becker]

@bassco as the author, do you mind re-opening?

[k8s-ci-robot]

@leakingtapan: Reopened this issue.

In response to this:

/reopen

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[bassco]

That would be fantastic if you could, @foobarfran

[leakingtapan]

/remove-lifecycle rotten

[foobarfran]

/assign @foobarfran

[foobarfran]

The feature for this issue is already merged in kubernetes/kubernetes#90943

/close

[k8s-ci-robot]

@foobarfran: You can't close an active issue/PR unless you authored it or you are a collaborator.

In response to this:

The feature for this issue is already merged in kubernetes/kubernetes#90943

/close

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[leakingtapan]

/close as the PR is merged in legacy provider

[bassco]

@foobarfran - legend!
Feature will be released in v1.19, for those that reach this comment and don't follow the MR