Client-go: How to get current node name / hostname from pod

Created on 26 Feb 2019 · 3Comments · Source: kubernetes/client-go

Hello,

I'm looking from a way from client-go to get current node name or node hostname when the code is running in a pod in the cluster (via a rest.InClusterConfig()).
Is it possible ?

Source

protheusfr

Most helpful comment

you can inject the node name or host IP into environment variables in a pod using the downward API

see https://kubernetes.io/docs/tasks/inject-data-application/environment-variable-expose-pod-information/#use-pod-fields-as-values-for-environment-variables for more info

/close

liggitt on 23 May 2019

👍4

All 3 comments

It seems that no such function is supplied by client-go. you can try :
$ curl -Gs http://localhost:10255/pods/ | grep -o '"nodeName":"[^"]*"' | head -n 1

GeorgeGuo2018 on 23 May 2019

you can inject the node name or host IP into environment variables in a pod using the downward API

see https://kubernetes.io/docs/tasks/inject-data-application/environment-variable-expose-pod-information/#use-pod-fields-as-values-for-environment-variables for more info

/close

liggitt on 23 May 2019

👍4

@liggitt: Closing this issue.

In response to this:

you can inject the node name or host IP into environment variables in a pod using the downward API

see https://kubernetes.io/docs/tasks/inject-data-application/environment-variable-expose-pod-information/#use-pod-fields-as-values-for-environment-variables for more info

/close

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