e77dbe04ac
We do not need these namespaces like xmlns:svg and xmlns:html anywhere, remove the declarations. Change-Id: Ic6aa62c28b2b21092d1e1d5c6f431807519f59af
59 lines
4.0 KiB
XML
59 lines
4.0 KiB
XML
<section xml:id="section_configuring-compute-to-use-ipv6-addresses"
|
|
xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
version="5.0">
|
|
<title>Configure Compute to use IPv6 addresses</title>
|
|
<para>If you are using OpenStack Compute with <systemitem>nova-network</systemitem>, you can put
|
|
Compute into IPv4/IPv6 dual-stack mode, so that it uses both IPv4 and IPv6 addresses for
|
|
communication. In IPv4/IPv6 dual-stack mode, instances can acquire their IPv6 global unicast
|
|
address by using a stateless address auto configuration mechanism [RFC 4862/2462]. IPv4/IPv6
|
|
dual-stack mode works with both <literal>VlanManager</literal> and
|
|
<literal>FlatDHCPManager</literal> networking modes. In <literal>VlanManager</literal>, each
|
|
project uses a different 64-bit global routing prefix. In <literal>FlatDHCPManager</literal>,
|
|
all instances use one 64-bit global routing prefix.</para>
|
|
<para>This configuration was tested with VM images that have an IPv6 stateless address auto
|
|
configuration capability. This capability is required for any VM you want to run with
|
|
an IPv6 address. You must use EUI-64 address for stateless address auto configuration.
|
|
Each node that executes a <literal>nova-*</literal> service must have
|
|
<literal>python-netaddr</literal> and <literal>radvd</literal> installed.
|
|
</para>
|
|
<procedure>
|
|
<title>Switch into IPv4/IPv6 dual-stack mode</title>
|
|
<step><para>On all nodes running a <literal>nova-*</literal> service, install
|
|
<systemitem>python-netaddr</systemitem>:</para>
|
|
<screen><prompt>#</prompt> <userinput>apt-get install python-netaddr</userinput></screen></step>
|
|
<step><para>On all <literal>nova-network</literal> nodes, install <literal>radvd</literal> and configure
|
|
IPv6 networking:</para>
|
|
<screen><prompt>#</prompt> <userinput>apt-get install radvd</userinput>
|
|
<prompt>#</prompt> <userinput>echo 1 > /proc/sys/net/ipv6/conf/all/forwarding</userinput>
|
|
<prompt>#</prompt> <userinput>echo 0 > /proc/sys/net/ipv6/conf/all/accept_ra</userinput></screen></step>
|
|
<step><para>Edit the <filename>nova.conf</filename> file on all nodes to specify
|
|
<literal>use_ipv6 = True</literal>.</para></step>
|
|
<step><para>Restart all <literal>nova-*</literal> services.</para></step>
|
|
</procedure>
|
|
<note><para>You can add a fixed range for IPv6 addresses to the <command>nova network-create</command>
|
|
command. Specify <option>public</option> or <option>private</option> after the
|
|
<option>network-create</option> parameter.</para>
|
|
<screen><prompt>$</prompt> <userinput>nova network-create public --fixed-range-v4 <replaceable>fixed_range_v4</replaceable> --vlan <replaceable>vlan_id</replaceable> --vpn <replaceable>vpn_start</replaceable> --fixed-range-v6 <replaceable>fixed_range_v6</replaceable></userinput></screen>
|
|
<para>You can set IPv6 global routing prefix by using the <option>--fixed_range_v6</option>
|
|
parameter. The default value for the parameter is: <literal>fd00::/48</literal>.
|
|
</para>
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para>When you use <literal>FlatDHCPManager</literal>, the command uses the original
|
|
<option>--fixed_range_v6</option> value. For example:</para>
|
|
<screen><prompt>$</prompt> <userinput>nova network-create public --fixed-range-v4 10.0.2.0/24 --fixed-range-v6 fd00:1::/48</userinput></screen>
|
|
</listitem>
|
|
<listitem>
|
|
<para>When you use <literal>VlanManager</literal>, the command
|
|
increments the subnet ID to create subnet prefixes.
|
|
Guest VMs use this prefix to generate their IPv6 global
|
|
unicast address. For example:</para>
|
|
<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>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</note>
|
|
<xi:include href="../../common/tables/nova-ipv6.xml"/>
|
|
</section>
|