Rpm-ostree install kubeadm gives errors while hardlinking kubelet

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1

Hi folks,

I am looking at the VMware openshift container and found https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/latest/rhcos-4.13.10-x86_64-vmware.x86_64.ova

I want to use kubeadm to create clusters. However the above OVA does not contain kubeadm. It has kubelet and kubectl.

I tried to install kubeadm using repo-ostree, but it tries to create a hardlink to kubelet in a readonly FS (since kubelet, kubectl are also getting installed as part of kubeadm).

I am an FCOS newbie and am not sure how to coax repo-ostree in order to get it to install kubeadm. I tried the overlay approach and also tried to change sysroot. None of them worked.

Can someone help me with installing kubeadm.

Thanks,
Arun

2

You’ve linked to an image of RHEL CoreOS which is only available as part of OpenShift (a Red Hat product).

You can get Fedora CoreOS images from https://fedoraproject.org/coreos/download/?stream=stable.

3

Thanks for the clarification @siosm . Since it was an fcos image I thought this could be the right place to ask such questions.