8f21d54243
- Remove kernel imports and kmods images - Repurpose KernelOverride as container path - Support Kernel.Version as version prefix for kernel selection - Compare initramfs by version Signed-off-by: Jonathon Anderson <janderson@ciq.com>
42 lines
1.8 KiB
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42 lines
1.8 KiB
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=================
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Kernel Management
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=================
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Warewulf nodes require a Linux kernel to boot. As of Warewulf v4.6, the kernel
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you wish to use must be present in the relevant container. Warewulf locates and
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provisions the kernel automatically for any node configured to use that
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container image.
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You can see what kernels are available in imported containers by using the
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``wwctl container list`` command:
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.. code-block:: console
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# wwctl kernel list
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Container Kernel Version Preferred Nodes
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--------- ------ ------- --------- -----
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newroot-test /boot/vmlinuz-5.14.0-427.37.1.el9_4.aarch64 5.14.0-427.37.1 true 0
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newroot-test /lib/modules/5.14.0-427.37.1.el9_4.aarch64/vmlinuz 5.14.0-427.37.1 false 0
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rocky-8 /boot/vmlinuz-4.18.0-372.13.1.el8_6.x86_64 4.18.0-372.13.1 true 2
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rocky-8 /lib/modules/4.18.0-372.13.1.el8_6.x86_64/vmlinuz 4.18.0-372.13.1 false 0
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rocky-9.3 /lib/modules/5.14.0-362.13.1.el9_3.aarch64/vmlinuz 5.14.0-362.13.1 true 0
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rockylinux-9-custom /lib/modules/5.14.0-427.40.1.el9_4.aarch64/vmlinuz 5.14.0-427.40.1 true 0
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Kernel Version and Override
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===========================
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If a container includes multiple kernels, the desired kernel may be selected by
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specifying the desired version or an explicit override.
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``--kernelversion`` specifies the desired kernel version.
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.. code-block:: console
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# wwctl node set n1 --kernelversion=4.18.0-372.13.1
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``--kerneloverride`` specifies the full path to the desired kernel.
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.. code-block:: console
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# wwctl node set n1 --kerneloverride=/boot/vmlinuz-4.18.0-372.13.1.el8_6.x86_64
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