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doc: Update packet.net doc wrt to Intel CPU microcode update

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Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
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Rolf Neugebauer 2018-01-15 18:10:33 +00:00
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@ -34,6 +34,13 @@ an additional YAML for [arm64](../examples/packet.arm64.yml) servers
which provide both access to the serial console and via ssh and which provide both access to the serial console and via ssh and
configures bonding for network devices via metadata (if supported). configures bonding for network devices via metadata (if supported).
For x86_64 builds for Intel servers we strongly recommend adding
`ucode: intel-ucode.cpio` to the kernel section in the YAML. This
updates the Intel CPU microcode to the latest by prepending it to the
generated initrd file. The `ucode` entry is only recommended when
booting on baremetal. It should be omitted (but is harmless) when
building images to boot in VMs.
**Note**: The update of the iPXE configuration sometimes may take some **Note**: The update of the iPXE configuration sometimes may take some
time and the first boot may fail. Hitting return on the console to time and the first boot may fail. Hitting return on the console to
retry the boot typically fixes this. retry the boot typically fixes this.