openstack/ironic
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Add DHCP server part to make the document more detail

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Jerry 2019-03-24 13:59:38 +08:00 committed by Jerry Wang
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doc/source/install/configure-pxe.rst
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Configuring PXE and iPXE
========================
DHCP server setup
-----------------
A DHCP server is required by PXE/iPXE client. You need to follow steps below.
#. Set the ``[dhcp]/dhcp_provider`` to ``neutron`` in the Bare Metal Service's
configuration file (``/etc/ironic/ironic.conf``):
.. note::
Refer :doc:`/install/configure-tenant-networks` for details. The
``dhcp_provider`` configuration is already set by the configuration
defaults, and when you create subnet, DHCP is also enabled if you do not add
any dhcp options at "openstack subnet create" command.
#. Enable DHCP in the subnet of PXE network.
#. Set the ip address range in the subnet for DHCP.
.. note::
Refer :doc:`/install/configure-networking` for details about the two
precedent steps.
#. Connect the openstack DHCP agent to the external network through the OVS
bridges and the interface ``eth2``.
.. note::
Refer :doc:`/install/configure-networking` for details. You do not require
this part if br-int, br-eth2 and eth2 are already connected.
#. Configure the host ip at ``br-eth2``. If it locates at ``eth2``, do below::
ip addr del 192.168.2.10/24 dev eth2
ip addr add 192.168.2.10/24 dev br-eth2
.. note::
Replace eth2 with the interface on the network node which you are using to
connect to the Bare Metal service.
TFTP server setup
-----------------