11ea1f5ac4
Layout of 'nova show ...' table have unexpected leading whitespace. Change-Id: Ie3ab9590079daf6de1fd480687a7cf7330781342
218 lines
14 KiB
XML
218 lines
14 KiB
XML
<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="nova-boot">
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<title>Launch an instance</title>
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<para>After you configure the Compute services, you can launch an
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instance. An instance is a virtual machine that OpenStack
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provisions on a Compute server. This example shows you
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how to launch a low-resource instance by using a downloaded
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image.</para>
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<note>
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<para>This procedure assumes you have:</para>
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<itemizedlist>
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<listitem>
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<para>Installed the nova client library on the machine on which
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you will run the commands (log on the controller if you are not
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sure).</para>
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</listitem>
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<listitem>
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<para>Set environment variables to specify your credentials.
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See <xref linkend="keystone-verify"/>.</para>
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</listitem>
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<listitem>
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<para>Downloaded an image. See <xref linkend="glance-verify"
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/>.</para>
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</listitem>
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<listitem>
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<para>Configured networking. See <xref linkend="nova-network"
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/>.</para>
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</listitem>
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</itemizedlist>
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</note>
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<procedure>
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<step>
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<para>Generate a keypair that consists of a private and public
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key to be able to launch instances on OpenStack. These keys
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are injected into the instances to make password-less SSH
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access to the instance. This depends on the way the necessary
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tools are bundled into the images. For more details, see the
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<link
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xlink:href="http://docs.openstack.org/user-guide-admin/content/cli_manage_images.html"
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><citetitle>OpenStack Admin User
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Guide</citetitle></link>.</para>
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<screen><prompt>$</prompt> <userinput>ssh-keygen</userinput>
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<prompt>$</prompt> <userinput>cd .ssh</userinput>
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<prompt>$</prompt> <userinput>nova keypair-add --pub_key id_rsa.pub mykey</userinput></screen>
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<para>You have just created the <literal>mykey</literal>
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keypair. The <literal>id_rsa</literal> private key is saved
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locally in <filename>~/.ssh</filename>, which you can use to
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connect to an instance launched by using mykey as the keypair.
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To view available keypairs:</para>
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<screen><prompt>$</prompt> <userinput>nova keypair-list</userinput>
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<computeroutput>+--------+-------------------------------------------------+
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| Name | Fingerprint |
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+--------+-------------------------------------------------+
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| mykey | b0:18:32:fa:4e:d4:3c:1b:c4:6c:dd:cb:53:29:13:82 |
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+--------+-------------------------------------------------+</computeroutput></screen>
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</step>
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<step>
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<para>To launch an instance, you must specify the ID for the
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flavor you want to use for the instance. A flavor is a
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resource allocation profile. For example, it specifies how
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many virtual CPUs and how much RAM your instance gets. To see
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a list of the available profiles:</para>
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<screen><prompt>$</prompt> <userinput>nova flavor-list</userinput>
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<computeroutput>+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
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| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
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+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
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| 1 | m1.tiny | 512 | 1 | 0 | | 1 | 1.0 | True |
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| 2 | m1.small | 2048 | 20 | 0 | | 1 | 1.0 | True |
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| 3 | m1.medium | 4096 | 40 | 0 | | 2 | 1.0 | True |
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| 4 | m1.large | 8192 | 80 | 0 | | 4 | 1.0 | True |
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| 5 | m1.xlarge | 16384 | 160 | 0 | | 8 | 1.0 | True |
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+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+</computeroutput></screen>
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</step>
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<step>
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<para>Get the ID of the image to use for the instance:</para>
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<screen><prompt>$</prompt> <userinput>nova image-list</userinput>
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<computeroutput>+--------------------------------------+--------------+--------+--------+
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| ID | Name | Status | Server |
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+--------------------------------------+--------------+--------+--------+
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| 9e5c2bee-0373-414c-b4af-b91b0246ad3b | CirrOS 0.3.1 | ACTIVE | |
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+--------------------------------------+--------------+--------+--------+</computeroutput></screen>
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</step>
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<step>
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<para>To use SSH and ping, you must configure security group
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rules. See the <link
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xlink:href="http://docs.openstack.org/user-guide/content/"
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><citetitle>OpenStack User
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Guide</citetitle></link>.</para>
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<screen><prompt>#</prompt> <userinput>nova secgroup-add-rule <replaceable>default</replaceable> tcp 22 22 0.0.0.0/0</userinput></screen>
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<screen><prompt>#</prompt> <userinput>nova secgroup-add-rule <replaceable>default</replaceable> icmp -1 -1 0.0.0.0/0</userinput></screen>
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</step>
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<step>
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<para>Launch the instance:</para>
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<screen><prompt>$</prompt> <userinput>nova boot --flavor <replaceable>flavorType</replaceable> --key_name <replaceable>keypairName</replaceable> --image <replaceable>ID</replaceable> <replaceable>newInstanceName</replaceable></userinput> </screen>
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<para>Create an instance by using flavor 1 or 2. For
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example:</para>
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<screen><prompt>$</prompt> <userinput>nova boot --flavor 1 --key_name mykey --image 9e5c2bee-0373-414c-b4af-b91b0246ad3b --security_group default cirrOS</userinput>
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<computeroutput>+--------------------------------------+--------------------------------------+
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| Property | Value |
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+--------------------------------------+--------------------------------------+
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| OS-EXT-STS:task_state | scheduling |
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| image | CirrOS 0.3.1 |
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| OS-EXT-STS:vm_state | building |
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| OS-EXT-SRV-ATTR:instance_name | instance-00000001 |
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| OS-SRV-USG:launched_at | None |
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| flavor | m1.tiny |
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| id | 3bdf98a0-c767-4247-bf41-2d147e4aa043 |
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| security_groups | [{u'name': u'default'}] |
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| user_id | 530166901fa24d1face95cda82cfae56 |
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| OS-DCF:diskConfig | MANUAL |
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| accessIPv4 | |
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| accessIPv6 | |
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| progress | 0 |
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| OS-EXT-STS:power_state | 0 |
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| OS-EXT-AZ:availability_zone | nova |
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| config_drive | |
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| status | BUILD |
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| updated | 2013-10-10T06:47:26Z |
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| hostId | |
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| OS-EXT-SRV-ATTR:host | None |
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| OS-SRV-USG:terminated_at | None |
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| key_name | mykey |
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| OS-EXT-SRV-ATTR:hypervisor_hostname | None |
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| name | cirrOS |
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| adminPass | DWCDW6FnsKNq |
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| tenant_id | e66d97ac1b704897853412fc8450f7b9 |
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| created | 2013-10-10T06:47:23Z |
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| os-extended-volumes:volumes_attached | [] |
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| metadata | {} |
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+--------------------------------------+--------------------------------------+</computeroutput></screen>
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<note>
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<para>If sufficient RAM is not available for the instance,
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Compute creates, but does not start, the instance and sets
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the status for the instance to
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<literal>ERROR</literal>.</para>
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</note>
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</step>
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<step>
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<para>After the instance launches, use the <command>nova
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list</command> to view its status. The status changes from
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<literal>BUILD</literal> to
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<literal>ACTIVE</literal>:</para>
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<screen><prompt>$</prompt> <userinput>nova list</userinput>
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<computeroutput>+--------------------------------------+-----------+--------+------------+-------------+----------------+
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| ID | Name | Status | Task State | Power State | Networks |
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+--------------------------------------+-----------+--------+------------+-------------+----------------+
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| dcc4a894-869b-479a-a24a-659eef7a54bd | cirrOS | BUILD | spawning | NOSTATE | vmnet=10.0.0.3 |
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+--------------------------------------+-----------+--------+------------+-------------+----------------+
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</computeroutput><prompt>$</prompt> <userinput>nova list</userinput>
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<computeroutput>+--------------------------------------+-----------+--------+------------+-------------+----------------+
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| ID | Name | Status | Task State | Power State | Networks |
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+--------------------------------------+-----------+--------+------------+-------------+----------------+
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| dcc4a894-869b-479a-a24a-659eef7a54bd | cirrOS | ACTIVE | None | Running | vmnet=10.0.0.3 |
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+--------------------------------------+-----------+--------+------------+-------------+----------------+</computeroutput>
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</screen>
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<note>
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<para>To show details for a specified instance:</para>
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<screen><prompt>$</prompt> <userinput>nova show dcc4a894-869b-479a-a24a-659eef7a54bd</userinput>
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<computeroutput>+--------------------------------------+----------------------------------------------------------+
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| Property | Value |
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+--------------------------------------+----------------------------------------------------------+
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| status | ACTIVE |
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| updated | 2013-10-16T21:55:24Z |
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| OS-EXT-STS:task_state | None |
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| OS-EXT-SRV-ATTR:host | compute-node |
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| key_name | mykey |
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| image | cirros (918a1017-8a1b-41ff-8809-6106ba45366e) |
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| vmnet network | 10.0.0.3 |
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| hostId | 306d7c693911170ad4e5218f626f531cc68caa45f3a0f70f1aeba94d |
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| OS-EXT-STS:vm_state | active |
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| OS-EXT-SRV-ATTR:instance_name | instance-0000000a |
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| OS-SRV-USG:launched_at | 2013-10-16T21:55:24.000000 |
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| OS-EXT-SRV-ATTR:hypervisor_hostname | compute-node |
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| flavor | m1.tiny (1) |
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| id | dcc4a894-869b-479a-a24a-659eef7a54bd |
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| security_groups | [{u'name': u'default'}] |
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| OS-SRV-USG:terminated_at | None |
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| user_id | 887ac8736b5b473b9dc3c5430a88b15f |
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| name | cirrOS |
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| created | 2013-10-16T21:54:52Z |
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| tenant_id | 43ab520b2b484578bb6924c0ea926190 |
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| OS-DCF:diskConfig | MANUAL |
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| metadata | {} |
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| os-extended-volumes:volumes_attached | [] |
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| accessIPv4 | |
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| accessIPv6 | |
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| progress | 0 |
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| OS-EXT-STS:power_state | 1 |
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| OS-EXT-AZ:availability_zone | nova |
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| config_drive | |
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+--------------------------------------+----------------------------------------------------------+</computeroutput></screen>
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</note>
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</step>
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<step>
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<para>After the instance boots and initializes and you have
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configured security groups, you can <command>ssh</command>
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into the instance without a password by using the keypair you
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specified in the <command>nova boot</command> command. Use the
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<command>nova list</command> command to get the IP address
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for the instance. You do not need to specify the private key
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because it was stored in the default location,
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<filename>~/.ssh/.id_rsa</filename>, for the
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<command>ssh</command> client.</para>
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<note>
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<para>If using a CirrOS image to spawn an instance you must log in as
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the <literal>cirros</literal>, and not the
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<literal>root</literal>, user.</para>
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<para>You can also log in to the <literal>cirros</literal>
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account without an ssh key by using the
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<literal>cubswin:)</literal> password:</para>
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<screen><prompt>$</prompt> <userinput>ssh cirros@10.0.0.3</userinput></screen>
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</note>
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</step>
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</procedure>
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</section>
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