Update etcd client dependency

[randomvariable]

User Story

The etcd client dependency is very outdated, and we're missing grpc fixes as a result. Need to refactor the cluster etcd client to make use of v3.4.16.

Detailed Description

[A clear and concise description of what you want to happen.]

Anything else you would like to add:

[Miscellaneous information that will assist in solving the issue.]

/kind feature

[vincepri]

@randomvariable Could we do this before v0.4.0?

[randomvariable]

I wasn't sure how big a change it was going to be. I'll review and get an answer today.

[randomvariable]

Just checked. There's nothing we can do here because Kubernetes depends on the older etcd client, which might be because it's stuck on an old grpc version because of cadvisor.

So

/close

[k8s-ci-robot]

@randomvariable: Closing this issue.

In response to this:

Just checked. There's nothing we can do here because Kubernetes depends on the older etcd client, which might be because it's stuck on an old grpc version because of cadvisor.

So

/close

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[randomvariable]

The network of dependencies is:
sigs.k8s.io/[email protected] k8s.io/[email protected]
k8s.io/[email protected] google.golang.org/[email protected]

Work is ongoing in kubernetes/kubernetes#102061 to update that.

[randomvariable]

Only pulling in apiextensions-apiserver to bring in the struct for CustomResourceDefinition... potentially removable.

[randomvariable]

/reopoen

figured it out.

[randomvariable]

/reopen

[k8s-ci-robot]

@randomvariable: Reopened this issue.

In response to this:

/reopen

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.

[vincepri]

/milestone v0.4

Let's bump it once v3.5 is released and we can validate it a bit more

[randomvariable]

I had a look at the milestone planning for etcd, their plan is to get the release out once they have signal from k/k to accept it for 1.22, so probably will be a v0.4.x thing. As far as I can tell, there's a performance issue to resolve first.

[vincepri]

/reopen

[k8s-ci-robot]

@vincepri: Reopened this issue.

In response to this:

/reopen

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.

[vincepri]

/kind release-blocking