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Anthos clusters on bare metal runs on Linux. Anthos clusters on bare metal version 1.13.0 and subsequent patch releases support the following Linux distributions and versions. Anthos clusters on bare metal works with the kernels supplied with supported distributions.

Operating system Supported versions
CentOS 8.2, 8.3, 8.4, 8.5
Red Hat Enterprise Linux (RHEL) 8.2, 8.3, 8.4, 8.5, 8.6
Ubuntu 18.04, 20.04

Supported operating systems must also have Linux kernels with the option CONFIG_BPF_JIT=y. To find out whether this option is enabled, run grep CONFIG_BPF_JIT /boot/config-$(uname -r).

For instructions about how to configure the operating system on your node machines, see the following: