Where does kubectl logs -f collect logs from?

[khteh]

My application uses EFK stack which uses emptyDir for log files. Is this mutually exclusive with kubectl logs -f? I don't see any log at all using this command now. Where does kubectl logs -f collect logs from? I don't find this information in https://kubernetes.io/docs/reference/kubectl/generated/kubectl_logs/

[k8s-ci-robot]

This issue is currently awaiting triage.

SIG CLI takes a lead on issue triage for this repo, but any Kubernetes member can accept issues by applying the triage/accepted label.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

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-sigs/prow repository.

[xyz-li]

kubectl connects to kube-apiserver and kube-apiserver forwards the request to the kubelet. kubelet reads logs from dir /var/log/pods/.

https://github.com/kubernetes/kubernetes/blob/195803cde570ad1025a78e36cdbef76bddbc4c33/pkg/kubelet/apis/config/types.go#L81-L95

[khteh]

How to tail/show application's log on both console and files?

[Suknna]

如何在控制台和文件上跟踪/显示应用程序的日志？

Using a Sidecar to Read Log Files from EmptyDirt Storage

[mpuckett159]

/kind support
/close
Hi, I am going to close this ticket for now, if you need further support please feel free to re-open it.

[k8s-ci-robot]

@mpuckett159: Closing this issue.

In response to this:

/kind support
/close
Hi, I am going to close this ticket for now, if you need further support please feel free to re-open it.

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-sigs/prow repository.