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<?xml version="1.0" encoding="ISO-8859-1"?>
<chapter id="mixed_arch">
<title>Mixed Arch Deployment</title>
<para>Mixed Arch deployment support allows a user to install Enea NFV Core
on a cluster containing a mixture of servers, with x86_64 and aarch64 CPU
families. The recommended topologies consist of deploying x86 Controllers
and aarch64 Compute nodes, or mixed x86_64 and aarch64 Compute nodes.</para>
<section id="launch_multiarch_env">
<title>Launching Instances in a Mixed Arch environment</title>
<para>Before launching an instance, the user needs to ensure certain
prerequisites are present:</para>
<itemizedlist>
<listitem>
<para>Have OpenStack images installed for both architectures:</para>
<programlisting>#image for x86
glance image-create --name dpdk-image-x86 --visibility public --disk-format raw \
--container-format bare --file dpdk-image-x86-compiled
#image for ARM
glance image-create --name dpdk-image-arm --visibility public --disk-format raw \
--container-format bare --file dpdk-image-arm-compiled
glance image-update [ID] --property hw_firmware_type=uefi</programlisting>
</listitem>
<listitem>
<para>Have Openstack configured with per-arch scheduling information.
The following is an example configuration:</para>
<orderedlist>
<listitem>
<para>Create a host aggregate:</para>
<programlisting>nova aggregate-create x86_64
nova aggregate-set-metadata x86_64 arch=x86_64
nova aggregate-add-host x86_64 node-6.domain.tld</programlisting>
</listitem>
<listitem>
<para>Create a flavor and tie it to the aggregate:</para>
<programlisting>openstack flavor create --ram 4096 --disk 4 --vcpus 4 dpdk-x86
nova flavor-key dpdk-x86 set aggregate_instance_extra_specs:arch=x86_64
nova flavor-key dpdk-x86 set hw:mem_page_size=any
openstack flavor set --property hw:cpu_policy=dedicated dpdk-x86</programlisting>
</listitem>
</orderedlist>
</listitem>
<listitem>
<para>Launch the VM:</para>
<programlisting>nova boot --image dpdk-image-x86 --flavor dpdk-x86 pktgen-x86</programlisting>
<para>It will be placed on the x86 hypervisor from node-6.</para>
</listitem>
</itemizedlist>
</section>
</chapter>
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