It is basically a Linux distribution which only supports running a single app (k8s). It has a custom init process which only supports running k8s-related processes, with no support for directly running any other services.
It is an "operating system" in the same sense that any other user space combined with the Linux kernel constitutes an operating system, so in the same sense that Android, Debian, RHEL, Ubuntu, etc., are "operating systems".
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It is basically a Linux distribution which only supports running a single app (k8s). It has a custom init process which only supports running k8s-related processes, with no support for directly running any other services.
It is an "operating system" in the same sense that any other user space combined with the Linux kernel constitutes an operating system, so in the same sense that Android, Debian, RHEL, Ubuntu, etc., are "operating systems".