a981479822
Global Pass Upgrades Pacth 01: inputs from email by Greg patch 02: removed content from topic -display data network information using horizon Story: TBD Task: TBD Signed-off-by: Adil <mohamed.adilassakkali@windriver.com> Change-Id: Ia2aab6e6120329877ef1e8e5fc25f1af8d95854b
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.. jjl1559817878161
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.. _data-network-management-data-networks:
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===========================
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Data Networks in Kubernetes
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===========================
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|prod-long| data network management allows you to model the L2 networks that
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are attached to node data, pci-sriov and pci-passthrough interfaces.
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A data network represents a Layer 2 physical or virtual network, or set of
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virtual networks, used to provide the underlying network connectivity needed
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to support the application networks. Multiple data networks may be configured
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as required, and realized over the same or different physical networks. Access
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to external networks is typically \(although not necessarily\) granted to
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worker nodes using a data network. The extent of this connectivity, including
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access to the open internet, is application dependent.
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Data networks are required for |prod-os| deployments and for the base
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|prod-long| if you wish to deploy container applications with SR-IOV devices.
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Data networks are created by the administrator to make use of an underlying set
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of resources on a physical network. The following types of data networks can be
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created:
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**flat**
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A data network mapped entirely over the physical network.
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**VLAN**
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A data network implemented on a physical network using a VLAN identifier.
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This allows multiple data networks over the same physical network.
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**VXLAN**
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.. note::
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This data interface is ONLY applicable to the |prod-os| application.
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A data network implemented across non-contiguous physical networks
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connected by Layer 3 routers, using a VNI identifier. This allows
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multiple data networks over physically separated Layer 2 networks.
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.. xbooklink VXLAN Data Networks are specific to |prod-os| application and are described in detail in :ref:`VXLAN Data Networks <vxlan-data-networks>` .
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See |prod-os| Configuration and Management: :ref:`VXLAN Data Networks
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<vxlan-data-networks>`
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There are no specific requirements for network services to be available on the
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data network. However, you must ensure that all network services required by
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the guests running on the worker nodes are available. For configuration
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purposes, the worker nodes themselves are entirely served by the services
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provided by the controller nodes over the internal management and cluster-host
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networks. |