108 lines
4.4 KiB
ReStructuredText
108 lines
4.4 KiB
ReStructuredText
===================
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Manage IP addresses
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===================
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Each instance has a private, fixed IP address that is assigned when
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the instance is launched. In addition, an instance can have a public
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or floating IP address. Private IP addresses are used for
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communication between instances, and public IP addresses are used
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for communication with networks outside the cloud, including the
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Internet.
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- By default, both administrative and end users can associate floating IP
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addresses with projects and instances. You can change user permissions for
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managing IP addresses by updating the ``/etc/nova/policy.json``
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file. For basic floating-IP procedures, refer to the `Allocate a
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floating address to an instance <http://docs.openstack.org/user-guide/configure_access_and_security_for_instances.html#allocate-a-floating-ip-address-to-an-instance>`_
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section in the OpenStack End User Guide.
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- For details on creating public networks using OpenStack Networking
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(``neutron``), refer to :ref:`networking-adv-features`.
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No floating IP addresses are created by default in OpenStack Networking.
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As an administrator using legacy networking (``nova-network``), you
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can use the following bulk commands to list, create, and delete ranges
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of floating IP addresses. These addresses can then be associated with
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instances by end users.
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List addresses for all projects
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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To list all floating IP addresses for all projects, run:
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.. code-block:: console
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$ nova floating-ip-bulk-list
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+------------+---------------+---------------+--------+-----------+
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| project_id | address | instance_uuid | pool | interface |
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+------------+---------------+---------------+--------+-----------+
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| None | 172.24.4.225 | None | public | eth0 |
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| None | 172.24.4.226 | None | public | eth0 |
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| None | 172.24.4.227 | None | public | eth0 |
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| None | 172.24.4.228 | None | public | eth0 |
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| None | 172.24.4.229 | None | public | eth0 |
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| None | 172.24.4.230 | None | public | eth0 |
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| None | 172.24.4.231 | None | public | eth0 |
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| None | 172.24.4.232 | None | public | eth0 |
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| None | 172.24.4.233 | None | public | eth0 |
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| None | 172.24.4.234 | None | public | eth0 |
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| None | 172.24.4.235 | None | public | eth0 |
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| None | 172.24.4.236 | None | public | eth0 |
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| None | 172.24.4.237 | None | public | eth0 |
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| None | 172.24.4.238 | None | public | eth0 |
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| None | 192.168.253.1 | None | test | eth0 |
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| None | 192.168.253.2 | None | test | eth0 |
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| None | 192.168.253.3 | None | test | eth0 |
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| None | 192.168.253.4 | None | test | eth0 |
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| None | 192.168.253.5 | None | test | eth0 |
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| None | 192.168.253.6 | None | test | eth0 |
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+------------+---------------+---------------+--------+-----------+
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Bulk create floating IP addresses
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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To create a range of floating IP addresses, run:
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.. code-block:: console
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$ nova floating-ip-bulk-create [--pool POOL_NAME] [--interface INTERFACE] RANGE_TO_CREATE
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For example:
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.. code-block:: console
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$ nova floating-ip-bulk-create --pool test 192.168.1.56/29
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By default, ``floating-ip-bulk-create`` uses the
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``public`` pool and ``eth0`` interface values.
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.. note::
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You should use a range of free IP addresses that is valid for your
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network. If you are not sure, at least try to avoid the DHCP address
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range:
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- Pick a small range (/29 gives an 8 address range, 6 of
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which will be usable).
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- Use :command:`nmap` to check a range's availability. For example,
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192.168.1.56/29 represents a small range of addresses
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(192.168.1.56-63, with 57-62 usable), and you could run the
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command :command:`nmap -sn 192.168.1.56/29` to check whether the entire
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range is currently unused.
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Bulk delete floating IP addresses
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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To delete a range of floating IP addresses, run:
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.. code-block:: console
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$ nova floating-ip-bulk-delete RANGE_TO_DELETE
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For example:
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.. code-block:: console
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$ nova floating-ip-bulk-delete 192.168.1.56/29
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