How to deploy dnsmasq in Kubernetes?

[Klaus Ma]

Hi team,

I'm working on host provisioning by PXE protocol which dependent on DHCP server. Currently, I deploy dnsmasq in Kubernetes with hostnetwork; but it seems does not work with NodePort.

Is there any suggestions on that?

-- Klaus

[haosdent]

Have you try 

https://tinkerbell.org/

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Best Regards,

Haosdent Huang

[Klaus Ma]

Is there any document on dnsmasq? tinkerbell seems build iPXE server from scratch :)

[Lennart Jern]

Hi!

I have successfully used this documentation for dnsmasq before: https://linux.die.net/man/8/dnsmasq

As for hostNetwork + NodePort, I think that is not possible to do. If you use hostNetwork then dnsmasq will be "outside" of the kubernetes network and won't be able to work with NodePorts.

Do you need NodePort for dnsmasq itself or is that for something else? In that case it may be a better idea to split it into a separate pod.

I think you are probably already aware of this, but anyway, we have an example for how to deploy Ironic with dnsmasq in the baremetal-operator repo: https://github.com/metal3-io/baremetal-operator/blob/main/ironic-deployment/ironic/ironic.yaml

It uses hostNetwork but not NodePorts.

// Lennart

---

From: Klaus Ma <klaus1...@gmail.com>
Sent: Friday, November 11, 2022 04:18
To: dev <d...@kubernetes.io>
Cc: haos...@gmail.com <haos...@gmail.com>; dev <d...@kubernetes.io>; Klaus Ma <klaus1...@gmail.com>
Subject: Re: How to deploy dnsmasq in Kubernetes?

 

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