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Speaking of distros and considering your background. What would be the "best" Distro for running Kubernetes ?

If all the OS does is provide a minimal surface for running containers, I'd focus on whatever gives me the best security, manageability and updates.

The Container Optimised OS is what GKE uses on Google Cloud Platform https://cloud.google.com/container-optimized-os/docs/

It's conceptually very similar to CoreOS' Container Linux, so I might try that if I were looking at Kubernetes elsewhere and wanted a container-only OS.

If I am running an environment with multiple purposes - some container hosts, some regular machines - I'd err on the side of "who is my current vendor/what does my ops team support and know best".

Great thanks for the valuable infos. We are running SLES12 and also a Suse Openstack Cloud on bare metal and only recently Suse has announced their container strategy (SLE MicroOS Distro) but we haven't had time to evaluate it yet. At a recent DevConf I saw some interesting talks about immutable container hosts such Fedora Atomic. Seems that there is a lot of work done in this area.

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