Add --node option for command ip and ssh-key

[lingsamuel]

Provides options -n, --node for command ip and ssh-key while minikube now support multi-node.

Example:

$ minikube ip -n m03
192.168.39.112
$ minikube ip -n m02
192.168.39.195
$ minikube ip -n m05

❌  Exiting due to GUEST_NODE_RETRIEVE: Could not find node m05

😿  If the above advice does not help, please let us know: 
👉  https://github.com/kubernetes/minikube/issues/new/choose

$ minikube ssh-key -n m05

❌  Exiting due to GUEST_NODE_RETRIEVE: Could not find node m05

😿  If the above advice does not help, please let us know: 
👉  https://github.com/kubernetes/minikube/issues/new/choose

$ minikube ssh-key -n m03
/home/lingsamuel/.minikube/machines/minikube-m03/id_rsa
$ minikube ip
192.168.39.13
$ minikube ssh-key
/home/lingsamuel/.minikube/machines/minikube/id_rsa

[k8s-ci-robot]

Hi @lingsamuel. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

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.

[minikube-bot]

Can one of the admins verify this patch?

[lingsamuel]

/retest

[k8s-ci-robot]

@lingsamuel: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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.

[lingsamuel]

/kind feature

[afbjorklund]

Looks promising, eventually we will need the same feature also for the ssh-host (host keys) once it is included

Edit: ssh and ssh-host already had --node parameter

/ok-to-test

[minikube-pr-bot]

kvm2 Driver
error collecting results for kvm2 driver: timing run 0 with Minikube (PR 9873): timing cmd: [/home/performance-monitor/.minikube/minikube-binaries/9873/minikube start --driver=kvm2]: starting cmd: fork/exec /home/performance-monitor/.minikube/minikube-binaries/9873/minikube: exec format error
docker Driver
error collecting results for docker driver: timing run 0 with Minikube (PR 9873): timing cmd: [/home/performance-monitor/.minikube/minikube-binaries/9873/minikube start --driver=docker]: starting cmd: fork/exec /home/performance-monitor/.minikube/minikube-binaries/9873/minikube: exec format error

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lingsamuel, tstromberg

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• OWNERS [tstromberg]

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