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In {product-title} version {product-version}, you can install a customized cluster on
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OpenStack that uses Kuryr SDN. To customize the installation, modify parameters in the `install-config.yaml` before you install the cluster.
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Red Hat OpenStack Platform (RHOSP) that uses Kuryr SDN. To customize the installation, modify parameters in the `install-config.yaml` before you install the cluster.
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.Prerequisites
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* Review details about the
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xref:../../architecture/architecture-installation.adoc#architecture-installation[{product-title} installation and update]
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processes.
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* Have access to an OpenStack administrator's account
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[id="installation-osp-about-kuryr_{context}"]
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= About Kuryr
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Kuryr is a container network interface (CNI) plug-in that uses Neutron and Octavia to provide networking to Pods and Services. It is primarily designed for {product-title} clusters that run on OpenStack instances.
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Kuryr is a container network interface (CNI) plug-in that uses Neutron and Octavia to provide networking to Pods and Services. It is primarily designed for {product-title} clusters that run on Red Hat OpenStack Platform (RHOSP) instances.
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Kuryr improves network performance by connecting Pods to the OpenStack SDN. It also provides connections between Pods and OpenStack instances.
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Kuryr improves network performance by connecting Pods to the OpenStack SDN. It also provides connections between Pods and RHOSP instances.
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[IMPORTANT]
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====
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Kuryr is recommended for deployments on encapsulated OpenStack tenant networks to avoid double encapsulation. For example, on a deployment of an encapsulated OpenShift SDN over an OpenStack network.
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Kuryr is recommended for deployments on encapsulated RHOSP-tenant networks to avoid double encapsulation. For example, on a deployment of an encapsulated OpenShift SDN over a RHOSP network.
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The default OpenShift SDN is recommended if:
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* You use provider networks or tenant VLANs.
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* The deployment will use many Services on a few hypervisors. Each Service creates an Octavia Amphora virtual machine in OpenStack that hosts a required load balancer.
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* The deployment will use many Services on a few hypervisors. Each Service creates an Octavia Amphora virtual machine in RHOSP that hosts a required load balancer.
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[id="installation-osp-accessing-api_{context}"]
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= Enabling access to the environment
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At deployment, all {product-title} machines are created in an OpenStack tenant network. Therefore, they are not accessible directly in most OpenStack deployments.
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At deployment, all {product-title} machines are created in a Red Hat OpenStack Platform (RHOSP)-tenant network. Therefore, they are not accessible directly in most RHOSP deployments.
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You can configure the {product-title} API to be accessible either with or without floating IP addresses.
Configure an external load balancer in OpenStack to use your own load balancer, resolve external networking needs, or scale beyond what the default {product-title} load balancer can provide.
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Configure an external load balancer in Red Hat OpenStack Platform (RHOSP) to use your own load balancer, resolve external networking needs, or scale beyond what the default {product-title} load balancer can provide.
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The load balancer serves ports 6443, 443, and 80 to any users of the system. Port 22623 serves Ignition start-up configurations to the {product-title} machines and must not be reachable from outside the cluster.
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.Prerequisites
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* Access to an OpenStack administrator's account
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* The https://docs.openstack.org/python-openstackclient/latest/[OpenStack client] installed on the target environment
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* Access to a RHOSP administrator's account
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* The https://docs.openstack.org/python-openstackclient/latest/[RHOSP client] installed on the target environment
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.Procedure
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. Using the OpenStack CLI, add floating IP addresses to all of the control plane machines:
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. Using the RHOSP CLI, add floating IP addresses to all of the control plane machines:
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----
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$ openstack floating ip create --port master-port-0 <public network>
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