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Guide for Interworking Between HUAWEI CloudFabric Solution and Redhat OpenStack

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Red Hat OpenStack Overcloud

Red Hat OpenStack Overcloud

The Overcloud is the resulting Red Hat Enterprise Linux OpenStack Platform environment created using the Undercloud. The Overcloud includes one or more of the following node types:

  • Controller: nodes that provide administration, networking, and high availability for the OpenStack environment. An ideal OpenStack environment recommends three of these nodes together in a high availability cluster. A default Controller node contains the following components: Horizon, Keystone, Nova API, Neutron Server, Open vSwitch, Glance, Cinder Volume, Cinder API, Swift Storage, Swift Proxy, Heat Engine, Heat API, Ceilometer, MariaDB, and RabbitMQ. The Controller also uses Pacemaker and Galera for high availability functions.
  • Compute: nodes used to provide computing resources for the OpenStack environment. You can add more Compute nodes to scale your environment over time. A default Compute node contains the following components: Nova Compute, Nova KVM, OpenStack Telemetry (Ceilometer) Agent, and Open vSwitch
  • Storage: nodes that provide storage for the OpenStack environment. It includes the following nodes:
    • Ceph Storage nodes: used to form storage clusters. Each node contains a Ceph Object Storage Daemon (OSD). In addition, the director installs the Ceph Monitor on Controller nodes where Ceph Storage nodes are deployed.
    • Block storage (Cinder): used as external block storage for HA Controller nodes. This node contains the following components: Cinder Volume, Ceilometer Agent, and Open vSwitch.
    • Object storage (swift): These nodes provide an external storage layer for OpenStack Swift. The Controller nodes access these nodes through the Swift proxy. This node contains the following components: OpenStack Object Storage (swift), OpenStack Telemetry (Ceilometer) Agent, and Open vSwitch.
Updated: 2019-03-25

Document ID: EDOC1100072313

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