c939bff0f2
This patch * Removes content that is covered by installation (adding group, fixing file permissions, multiple compute nodes) * Removes empty section (hypervisors) * Merges duplicate content (overview/explanation of nova.conf) * Flattens section structure, and removes "post-install config" section label that was a legacy of previous structure * Addresses outdated reference to Xen configuration info. Closes-bug: 1095095 Change-Id: I8922606fe38d30d5ac6288901a866c635c686fbe
49 lines
3.8 KiB
XML
49 lines
3.8 KiB
XML
<section xml:id="section_configuring-compute-to-use-ipv6-addresses"
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xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:ns5="http://www.w3.org/1999/xhtml"
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xmlns:ns4="http://www.w3.org/2000/svg"
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xmlns:ns3="http://www.w3.org/1998/Math/MathML"
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xmlns:ns="http://docbook.org/ns/docbook" version="5.0">
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<title>Configure Compute to use IPv6 addresses</title>
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<para>You can configure Compute to use both IPv4 and IPv6 addresses for
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communication by putting it into a IPv4/IPv6 dual stack mode. In IPv4/IPv6
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dual stack mode, instances can acquire their IPv6 global unicast address
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by stateless address auto configuration mechanism [RFC 4862/2462].
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IPv4/IPv6 dual stack mode works with <literal>VlanManager</literal> and <literal>FlatDHCPManager</literal>
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networking modes. In <literal>VlanManager</literal>, different 64bit global routing prefix is used for
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each project. In <literal>FlatDHCPManager</literal>, one 64bit global routing prefix is used
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for all instances.</para>
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<para>This configuration has been tested with VM images
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that have IPv6 stateless address auto configuration capability (must use
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EUI-64 address for stateless address auto configuration), a requirement for
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any VM you want to run with an IPv6 address. Each node that executes a
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<literal>nova-*</literal> service must have <literal>python-netaddr</literal>
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and <literal>radvd</literal> installed.</para>
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<para>On all nova-nodes, install python-netaddr:</para>
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<screen><prompt>$</prompt> <userinput>sudo apt-get install python-netaddr</userinput></screen>
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<para>On all <literal>nova-network</literal> nodes install <literal>radvd</literal> and configure IPv6
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networking:</para>
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<screen><prompt>$</prompt> <userinput>sudo apt-get install radvd</userinput>
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<prompt>$</prompt> <userinput>sudo bash -c "echo 1 > /proc/sys/net/ipv6/conf/all/forwarding"</userinput>
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<prompt>$</prompt> <userinput>sudo bash -c "echo 0 > /proc/sys/net/ipv6/conf/all/accept_ra"</userinput></screen>
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<para>Edit the <filename>nova.conf</filename> file on all nodes to
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set the use_ipv6 configuration option to True. Restart all
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nova- services.</para>
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<para>When using the command <command>nova network-create</command> you can add a fixed range
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for IPv6 addresses. You must specify public or private after the create parameter.</para>
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<screen><prompt>$</prompt> <userinput>nova network-create public --fixed-range-v4 <replaceable>fixed_range_v4</replaceable> --vlan <replaceable>vlan_id</replaceable> --vpn <replaceable>vpn_start</replaceable> --fixed-range-v6 <replaceable>fixed_range_v6</replaceable></userinput></screen>
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<para>You can set IPv6 global routing prefix by using the <literal>--fixed_range_v6</literal>
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parameter. The default is: <literal>fd00::/48</literal>. When you use
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<literal>FlatDHCPManager</literal>, the command uses the original value of
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<literal>--fixed_range_v6</literal>. When you use <literal>VlanManager</literal>, the
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command creates prefixes of subnet by incrementing subnet id. Guest VMs uses this prefix for
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generating their IPv6 global unicast address.</para>
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<para>Here is a usage example for <literal>VlanManager</literal>:</para>
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<screen><prompt>$</prompt> <userinput>nova network-create public --fixed-range-v4 10.0.1.0/24 --vlan 100 --vpn 1000 --fixed-range-v6 fd00:1::/48</userinput></screen>
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<para>Here is a usage example for <literal>FlatDHCPManager</literal>:</para>
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<screen><prompt>$</prompt> <userinput>nova network-create public --fixed-range-v4 10.0.2.0/24 --fixed-range-v6 fd00:1::/48</userinput></screen>
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<xi:include href="../../common/tables/nova-ipv6.xml"/>
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</section>
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