22 lines
1.1 KiB
XML
22 lines
1.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!-- moved to launch instances file -->
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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" version="5.0"
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xml:id="inserting_userdata">
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<title>Provide user data to instances</title>
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<para><glossterm baseform="user data">User data</glossterm> is a
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special key in the
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metadata service that holds a file that cloud-aware applications
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in the guest instance can access. For example the <link
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xlink:href="https://help.ubuntu.com/community/CloudInit"
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><package>cloudinit</package></link> system is a Ubuntu open
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source package that handles early initialization of a cloud
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instance and that makes use of <literal>user
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data</literal>.</para>
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<para>You can place user data in a local file and pass it through
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the <parameter>--user-data <user-data-file></parameter>
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parameter at instance creation:</para>
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<screen><prompt>$</prompt> <userinput>nova boot --image ubuntu-cloudimage --flavor 1 --user-data mydata.file</userinput></screen>
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</section>
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