4db19b3e1b
CIDR 203.0.113.24/29 gives IP addresses .24 to .31, not .32 (that would be 9 instead of 8 different addresses). Change-Id: I01c67c3491e306f3194a4bbb5920152156f8c07f Closes-Bug: #1443225
58 lines
2.8 KiB
XML
58 lines
2.8 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="nova-network-initial-network">
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<title>Create initial network</title>
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<para>Before launching your first instance, you must create the necessary
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virtual network infrastructure to which the instance will connect.
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This network typically provides Internet access
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<emphasis>from</emphasis> instances. You can enable Internet access
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<emphasis>to</emphasis> individual instances using a
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<glossterm>floating IP address</glossterm> and suitable
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<glossterm>security group</glossterm> rules. The <literal>admin</literal>
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tenant owns this network because it provides external network access
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for multiple tenants.</para>
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<para>This network shares the same <glossterm>subnet</glossterm>
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associated with the physical network connected to the external
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<glossterm>interface</glossterm> on the compute node. You should specify
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an exclusive slice of this subnet to prevent interference with other
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devices on the external network.</para>
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<note>
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<para>Perform these commands on the controller node.</para>
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</note>
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<procedure>
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<title>To create the network</title>
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<step>
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<para>Source the <literal>admin</literal> tenant credentials:</para>
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<screen><prompt>$</prompt> <userinput>source admin-openrc.sh</userinput></screen>
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</step>
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<step>
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<para>Create the network:</para>
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<para>Replace <replaceable>NETWORK_CIDR</replaceable> with the subnet
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associated with the physical network.</para>
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<screen><prompt>$</prompt> <userinput>nova network-create demo-net --bridge br100 --multi-host T \
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--fixed-range-v4 <replaceable>NETWORK_CIDR</replaceable></userinput></screen>
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<para>For example, using an exclusive slice of
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<literal>203.0.113.0/24</literal> with IP address range
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<literal>203.0.113.24</literal> to <literal>203.0.113.31</literal>:
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</para>
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<screen><prompt>$</prompt> <userinput>nova network-create demo-net --bridge br100 --multi-host T \
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--fixed-range-v4 203.0.113.24/29</userinput></screen>
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<note>
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<para>This command provides no output.</para>
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</note>
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</step>
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<step>
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<para>Verify creation of the network:</para>
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<screen><prompt>$</prompt> <userinput>nova net-list</userinput>
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<computeroutput>+--------------------------------------+----------+------------------+
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| ID | Label | CIDR |
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+--------------------------------------+----------+------------------+
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| 84b34a65-a762-44d6-8b5e-3b461a53f513 | demo-net | 203.0.113.24/29 |
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+--------------------------------------+----------+------------------+</computeroutput></screen>
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</step>
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</procedure>
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</section>
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