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46 lines
2.8 KiB
XML
46 lines
2.8 KiB
XML
<?xml version='1.0' encoding='utf-8' ?>
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<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % BOOK_ENTITIES SYSTEM "cloudstack.ent">
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%BOOK_ENTITIES;
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]>
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<!-- Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<section id="user-data-and-meta-data">
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<title>User Data and Meta Data</title>
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<para>&PRODUCT; provides API access to attach user data to a deployed VM. Deployed VMs also have access to instance metadata via the virtual router.</para>
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<para>User data can be accessed once the IP address of the virtual router is known. Once the IP address is known, use the following steps to access the user data:</para>
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<orderedlist>
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<listitem><para>Run the following command to find the virtual router.</para>
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<programlisting># cat /var/lib/dhclient/dhclient-eth0.leases | grep dhcp-server-identifier | tail -1</programlisting>
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</listitem>
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<listitem><para>Access user data by running the following command using the result of the above command</para><programlisting># curl http://10.1.1.1/latest/user-data</programlisting></listitem>
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</orderedlist>
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<para>Meta Data can be accessed similarly, using a URL of the form http://10.1.1.1/latest/meta-data/{metadata type}. (For backwards compatibility, the previous URL http://10.1.1.1/latest/{metadata type} is also supported.) For metadata type, use one of the following:</para>
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<itemizedlist>
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<listitem><para>service-offering. A description of the VMs service offering</para></listitem>
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<listitem><para>availability-zone. The Zone name</para></listitem>
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<listitem><para>local-ipv4. The guest IP of the VM</para></listitem>
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<listitem><para>local-hostname. The hostname of the VM</para></listitem>
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<listitem><para>public-ipv4. The first public IP for the router. (E.g. the first IP of eth2)</para></listitem>
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<listitem><para>public-hostname. This is the same as public-ipv4</para></listitem>
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<listitem><para>instance-id. The instance name of the VM</para></listitem>
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</itemizedlist>
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</section>
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