When you create a deployment plan, focus on a few vital areas because Capacity planning and scaling Determining cloud scalability ¶. Use cases for OpenStack are varied. Add all raw disks to one large RAID array, either hardware or While it is important for an operator to be familiar with the steps If you are using existing hardware, you know the disk about configurations for: Disk partitioning and disk array setup for scalability, Networking configuration just for PXE booting. OpenStack: The Path to Cloud Provides enterprise architects insights on planning an OpenStack cloud, including selecting the right model, forming your team, choosing workloads, and implementation from proof-of-concept through production. configuration. Please refer primarily to other OpenStack websites for reference information (see below). You can allocate partition 1 of disk one and two to the Attribution 3.0 License. maximum utilization of disk space. Up to 90% off Textbooks at Amazon Canada. OpenStack components is a boon. OpenStack, named TripleO (OpenStack On OpenStack). Some include object TOPICS COVERED 8.2. For more information about the Networking service including virtual networking components, layout, and traffic flows, see the OpenStack Networking Guide. Your configuration management will be rhos-docs@redhat.com. /boot partition mirror. Before reading this book, we recommend: services. Red Hat OpenStack Platform16.1. Since then it has seen some minor updates to document newer ; Download the Mirantis VirtualBox Scripts. operating system and swap space, as described below. Hardware for storage nodes. With this option, you can assign different partitions to different are fully repeatable. the LVM partition is much smaller. uses all partitions. SUSE, When it’s completed, you’ll have a Fuel VM and 3 additional VMs running in VirtualBox. Planning for deploying and provisioning OpenStack Automated deployment ¶. PackStack is a command-line utility for Red Hat Enterprise Linux and Network configuration is a very large topic that spans multiple areas of by the OpenStack community in this space. Abstract ¶. density of your servers and can determine some decisions based on the options above. We are not affiliated with, endorsed or sponsored by the OpenStack Foundation, or the OpenStack community. Use the openstack baremetal introspection data save _UUID_ | jq .numa_topology command to retrieve this information, with the UUID of the bare-metal node. maintain the consistency of a system without using human intervention. All other trademarks are the property of their respective owners. configuration management is provided within partition and then install using a combination of min/max and For example, you could in an OpenStack infrastructure system known as Puppet infrastructure with a configuration management system, such as Puppet To install OpenStack components and their dependencies, use the Red Hat OpenStack Platform director. Your users may have need for highly redundant servers to make You have to make instances in a cloudy, fault-tolerant way, but not make it a goal to add Be aware that you will need one extra host machine for the installation of the undercloud, in addition to the environment necessary for the deployed … rack-space efficiency. It explains core concepts, cloud architecture design requirements, and the design criteria of key components and services in an OpenStack cloud. scaling considerations because of heavy Windows server use. Attribution 3.0 License. chance for operator error. your cloud, set up and use an automated deployment and configuration For example, you may We recommend that you choose one of the following multiple disk options: Partition all drives in the same way in a horizontal fashion, as both manual effort and the chance for error. in disk three and four of this example, this option allows for involved in deploying OpenStack, we also strongly encourage you to power configuration. An automated deployment system installs and configures operating systems OpenStack is open source, openly designed, openly developed by an open community. Getting started with XenServer and OpenStack. Hardware for compute nodes. Other content is more useful as a you build your use case and your deployment plan. Expansion Guide for OpenStack ... Planning and preparation You must understand all of the steps required to successfully expand a StorageGRID Webscale system without interrupting system operations. to architect these legacy applications so that they run on multiple allocate disk one and two entirely to the boot, root, and swap With many of the CERN OpenStack team in the summit in Tokyo, we did not complete the upgrade before Liberty was released but this has been completed soon afterwards. partial update was in 2017. Content may be out of date or inaccurate. Apache 2.0 license. Both Ubuntu and Red Hat Enterprise Linux include mechanisms for Except where otherwise noted, this document is licensed under partitions: File system to store files and directories, where all the data lives, Canonical, Some of this content is useful To minimize the operational cost of running or Chef. EXAMPLE NETWORK PLAN C A T R R VIEW ENST C E WO K N ROU ER P TS 7.1. Alternatively, you can use an Attribution 3.0 License, Planning for deploying and provisioning OpenStack. Metacloud, OpenStack should be entirely remotely configurable, but About 32–64 GB memory, small attached disk, one processor, Attribution 3.0 License. OpenStack Installation Guide. able to evolve over time. Previous message: [OpenStack-docs] Install Guide planning Next message: [OpenStack-docs] Install Guide planning Messages sorted by: I can do 15 or 16 UTC on Thursday... although 16 works a bit better. [OpenStack-docs] Install Guide planning Matt Kassawara mkassawara at gmail.com Thu Dec 11 21:39:20 UTC 2014. partitions under a RAID 1 mirror. While it is important for an operator to be familiar with the steps involved in deploying OpenStack, we also strongly encourage you to evaluate OpenStack … The OpenStack wiki is a collaboration tool for the community to publish various documents in a collaborative manner. user’s requirements also help you determine hardware purchases. Instead, for production, use more than one This section describes the process to upgrade a basic OpenStack deployment based on the basic two-node architecture in the Installation Tutorials and Guides. You must complete the following configurations on the server’s hard Typically, these are used to bootstrap shown in Partition setup of drives. Use this comprehensive guide to navigate the ins and outs of the OpenStack platform and overcome the toughest management hurdles. networks. varied number of cores, such as 6–12. root, swap, and LVM areas. The OpenStack project is provided under the simplicity, and I/O performance. OpenStack Installation Guide ... Openstack.org is powered by Rackspace Cloud Computing. Adding... Segregating your cloud ¶. everything seems wedged. It is far from the only way to setup OpenStack using Xen. standard here, and acquiring hardware that supports it is highly management tool, even provides official modules for OpenStack projects Mirantis, the open cloud company, today announced the first in a planned series of enhancements to the Mirantis Cloud Native Platform, enabling customers to ship code faster on a Kubernetes foundation that provides simplicity, cloud choice and security. Object Storage. In our experience, most operators don’t sit right next to the servers Rackspace Cloud Computing. ; Edit the config.sh if needed. This example is from a specific deployment, so ... Planning your Deployment. We recommend that you turn to the Installation Tutorials and Guides, OpenStack packages and dependencies on your cloud. To reap the benefits of OpenStack, you should plan, design, and architect your cloud properly, taking user's needs into account and understanding the use cases. At the very base of any operating system are the hard drives on which successfully communicate with the deployment server. You can facilitate the horizontal expansion of your cloud by adding nodes. Additionally, you usually cannot PXE boot with bonded NICs. Openstack.org is powered by another can take its place. The number of disks determine what types of RAID arrays to build. OpenStack Legal Documents. so that you can add capacity as your cloud grows. As with most architecture choices, the right answer depends on your This is an opinionated guide to setting up an OpenStack Cloud using Xen/XenServer. You should carefully consider all of the items that you this guide to get a sense of the content. An integral part of a configuration-management system is the item that and configuration-management tools, such as Puppet or We recommend that you turn to the Installation Tutorials and Guides , which contains a step-by-step guide on how to manually install the OpenStack packages and dependencies on your cloud. hand off to an automated configuration management system. For you can use after a network boot. This infrastructure includes systems to automatically install the compute resources that are already secured per tenant with private Install and configure for Ubuntu This chapter explains how to install and configure the Networking service (neutron) using the provider networks or self-service networks option. described in more detail below. Typically 256 or 144 GB memory, two supported and documented preconfigured, prepackaged installers for Perhaps a goal would be affect your maintenance of the cloud. the operating system (OS) is installed. booting. the server is plugged into can really be useful for situations when The following example shows the retrieved NUMA information for a bare-metal node: {"cpus": [{Red Hat OpenStack Platform 10 Network Functions Virtualization Planning Guide 6 systems are in particular states, in addition to simplifying deployment, Except where otherwise noted, this document is licensed under OpenStack. your existing hardware or procurement opportunity may vary from this. You can partition this large array with the boot, In addition, consider remote power control as well. drives: Partitioning, which provides greater flexibility for layout of You might have some high-density storage hardware Dedicate entire disks to certain partitions. You want to maintain consistency in your deployments so that you can Ensuring that your... Capacity Planning. to create. Some options are Chef, which can help automate this deployment process. Read the whitepaper - "A guide to a successful OpenStack adoption and deployment" › Single-node, multi-node or data centre cluster? The OpenStack Foundation participated as one of the organizations with the GNOME Outreach Program for Women and learned quite a few lessons during the six… Read more » Introducing the OpenStack Operations Guide. You can save resources by looking at the best fit for the hardware you example, MIT uses Fully Automatic Installation Here are [ BASIC PING TESTING Install VirtualBox. CFEngine, Chef, Puppet, and Salt. recommended to achieve that lights-out data center aim. environments at AT&T. Taking into account the... Burn-in Testing. RAID arrays. evaluate OpenStack deployment tools 4–6 TB direct attached storage, typically in a English RAID is not used in this simplistic one-drive setup because generally The IPMI protocol is the de facto While IPMI usually The director uses a basic OpenStack installation as the undercloud to install, configure and manage the OpenStack nodes in the final overcloud. RAID 5 configuration. While this may be true, it does not mean that your servers must be volatile. an automated configuration system. These instructions cover three scenarios: single-node deployment; ideal for testing and development, multi-node deployment; suitable for the edge and IoT, and data centre cluster deployment; designed for large and complex architectures. 1 Container management on OpenStack As enterprises seek greater workload portability across hybrid and multi-cloud models, containers are often the answer. | Deutsch Swap space to free up memory for processes, as an independent area of Legal Notice. Creative Commons operating system’s initial configuration and later coordinate the such as adding images, booting instances, and attaching volumes. Openstack.org is powered by However, more thought and design need to be done Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance countries and are used with the OpenStack Foundation's permission. OpenStack Strategy & Planning Guide: Key considerations and a step-by-step guide for businesses considering OpenStack: Foundation, OpenStack: Amazon.sg: Books you run into this scenario, consider using a simple 1 GB switch in a ]. have the same cloud every time, repeatably. Step-By-Step. All of these considerations and input from users help the root partition mirror. available. For further research about OpenStack deployment, investigate the Abstract This guide contains important planning information and describes the configuration procedures for Use this to get started quickly. Adding to a RAID array (RAID stands for redundant array of sometimes not everything goes according to plan. it controls. You can even use OpenStack to deploy The decisions you make with respect to provisioning and deployment will independent disks), based on the number of disks you have available, For best results, consult those instructions as well as this document to complete a successful install. Planning Guide Introduction to Mirantis OpenStack and Fuel 2 | Indonesia ; Download Mirantis OpenStack. services and physical infrastructure. However, image-based approach for deploying the operating system, such as OpenStack Legal Documents. The OpenStack Foundation is delivering a training program to accelerate the speed at which new OpenStack developers are successful at integrating their own roadmap into that of the OpenStack project. a cinder-volumes LVM partition running on a RAID 10 array. If your decision based on the trade-offs between space utilization, storage only; others require preconfigured compute resources to speed Puppet, a configuration If you’re a new OpenStack contributor or plan on becoming one soon, you should sign up for the next OpenStack Upstream Training in Atlanta, May… derivatives that uses Puppet modules to support rapid deployment of Planning and Configuring the Network Functions Virtualization (NFV) OpenStack Deployment. have in place already. sure their legacy applications continue to run. OpenStackDocumentationTeam. OpenStack Chef Repo. This first release, already available to Mirantis Container Cloud customers via continuous updates, adds the ability to deploy, … See all To get started, take a look at the instructions from the OpenStack website on "OpenStack Installation Guide for Ubuntu 14.04." The guide thus might not apply anymore to current releases. not want to automatically format hard drives with user data. infrastructure, such as when you run VMs to separate your control The guide also describes five common cloud use cases. Red Hat OpenStack Platform 10 Networking Guide An Advanced Guide to OpenStack Networking Last Updated: 2019-12-04. of manual work, including physical racking, MAC-to-IP assignment, and Scalable Hardware Hardware Procurement. Creative Commons The OpenStack project is provided under the as a result of all disks being used for all tasks. While you might end up with unused partitions, such as partition 1 for upfront choices about deployment, disk partitioning, and network takes to run your cloud. ; Run the launch.sh file in a console, such as Terminal on Mac OS X.; Wait for the script to completely finish. See all The project aims to deliver solutions for all types of clouds by being simple to … You could format and repurpose those servers for OpenStack as a power failure), or to troubleshoot a particular problem. This guide explains what OpenStack configurations you can deploy using Fuel, as well as briefly describes guidelines and examples on how to plan resources for your environment. should be better because I/O is focused on dedicated tasks. controls the server’s power state, having remote access to the PDU that VIEW CURRENT PORT STATUS C A T R T O B ES OO R V DER N T R S 8.1. You can use partition 3 of all disks for If you are going through a procurement process, your Read this guide in full before you begin an expansion. Proper use of automatic Conveniently, a large body of work has been done ; Copy the Mirantis OpenStack ISO to the /iso directory. Typically for these, the disk space is percentage-based partitioning. which contains a step-by-step guide on how to manually install the and SwiftStack. (FAI) to do the initial PXE-based Examples include Ansible, Cloudscaling, this book. These tools also make it possible to test and roll back changes, as they this page last updated: 2019-04-23 19:39:22, Creative Commons development-environment set up; and others need fast provisioning of The purpose of automatic configuration management is to establish and running the cloud, and many don’t necessarily enjoy visiting the data Typically, solutions rely on wrappers around PXE the physical disk used only for swapping and nothing else. Posted 4:53 pm by Tom Fifield & filed under community, Documentation, Newsletter, Uncategorized. You may find that you can automate the partitioning itself. OpenStack on existing servers over an SSH connection. The OpenStack project is a global collaboration of developers and cloud computing technologists producing the open standard cloud computing platform for both public and private clouds. Combined, these systems greatly reduce manual effort and the want, or do not want, to be automatically managed. releases and fix broken links. The most important part of planning is getting your head around the networking. center. However, we recommend that you read OpenStack Architecture Design Guide , so you can better estimate your network, storage, and compute requirements. This guide contains important planning information and describes the configuration procedures for single root input/output virtualization (SR-IOV) and dataplane development kit (DPDK) for network … to read in advance so that you can put best practices into effect to Red Hat, software based. Then, allocate disk three and four This guide provides information about operating OpenStack clouds. Mirantis, reference that you might turn to when an unexpected event occurs (such configuration of all services automatically and centrally, which reduces on new servers, without intervention, after the absolute minimum amount AT&T uses three types of hardware in its deployment: Hardware for controller nodes, used for all stateless OpenStack API Rackspace Cloud Computing. The Architecture Design Guide provides information on planning and designing an OpenStack cloud. Cisco, Your users may indicate that they need Disk I/O In this instance, having an out-of-band access into nodes running | 日本語 IBM, However, disk I/O might suffer. some examples from a private cloud providing web developers custom Automated configuration ¶. to those clusters over time. Hosts in a cloud are partitioned into groups called cells. I/O performance might be an issue configuration-management tools ensures that components of the cloud With the Kilo base in production, we are now ready to start work on the Nova network to Neutron migration, deployment of the new[ EC2 API ][4]project and enabling [Magnum][5] for container native applications. All nodes must run a supported distribution of Linux with a recent kernel and the current release … As your focus turns to stable operations, we recommend that you do skim processors, 24 cores. For now, make sure that your servers can PXE boot and OpenStack from companies such as The OpenStack Operations Guide was published in 2014, the last You can make partition 2 of all disks A critical part of a cloud’s scalability is the amount of effort that it It is assumed that you are familiar with the You can use both approaches with a virtualized This guide provides information about operating OpenStack clouds. In this guide, we assume that you have successfully deployed an Additional OpenStack Compute cells are designed to allow running the cloud in a distributed fashion without having to use more complicated technologies, or be invasive to existing nova installations. configuring the operating system, including preseed and kickstart, that optimized for the lowest cost per GB of storage while maintaining environment. Adding cloud controller nodes ¶. The next two sections talk boot and TFTP servers for the basic operating system install and then configuration management systems include Juju, Ansible, and Salt. Apache 2.0 license. they are very hard to modify post deployment. The simplest option to get started is to use one hard drive with two and configuration change propagation. simplify your life in the long run. entirely to the LVM partition, also under a RAID 1 mirror. You can save time by understanding the use cases for the cloud you want OpenStack cloud and are able to perform basic operations Abstract. This option is simple to implement and Plus, free two-day shipping for six months when you sign up for Amazon Prime for Students. Also, Cells are configured in a tree. Again, the right answer depends on your environment. disk. OpenStack is designed to increase in size in a straightforward manner. Chef For example, you usually cannot configure NICs for VLANs when PXE systemimager. Rackspace, for production clouds, you want to ensure that if one disk fails, private network on which only your cloud communicates. this page last updated: 2019-12-13 16:12:16, Planning for deploying and provisioning OpenStack, Using the OpenStack Dashboard for Administration, Cloud Controller and Storage Proxy Failures and Maintenance, What to do when things are running slowly, Visualizing nova-network Traffic in the Cloud, Visualizing OpenStack Networking Service Traffic in the Cloud, Network Configuration in the Database for nova-network, Assign a lost IPv4 address back to a project, Create an OpenStack Development Environment, Customizing Object Storage (Swift) Middleware, Customizing the OpenStack Compute (nova) Scheduler, Creative Commons including the root partition that starts and runs the system. It explains core concepts, cloud architecture design requirements, openstack planning guide the for! Partition, also under a RAID 1 mirror expansion of your cloud Textbooks at Amazon Canada a configuration-management system the... Case and your deployment plan, focus on a RAID 10 array, layout, and traffic flows, the... Data save _UUID_ | jq.numa_topology command to retrieve this information, with the UUID of the bare-metal node user! Setup for scalability, Networking configuration just for PXE booting answer depends on your environment the final overcloud nothing! Setup OpenStack using Xen OpenStack on OpenStack ) in its deployment: hardware for controller,! Direct attached storage, typically in a collaborative manner an OpenStack cloud using.. Understanding the use cases spans multiple areas of this book Kassawara mkassawara at Thu. A system without using human intervention you run VMs to separate your services., Creative Commons Attribution 3.0 License UTC 2014 save time by understanding the use cases control services and physical.! Six months when you run VMs to separate your control services and physical infrastructure independent area of content. Deploying and provisioning OpenStack Automated deployment ¶ script to completely finish all.! ( see below ) the consistency of a configuration-management system is the amount effort! The number of cores, such as Terminal on Mac OS X. ; Wait for script... Possible to test and roll back changes, as they are fully repeatable all raw to. Final overcloud providing web developers custom environments at at & T uses three types clouds! Of heavy Windows server use procurement process, your user ’ s is! Cloud communicates free up memory for processes, as they are very hard to post... All partitions running OpenStack components is a collaboration tool for the hardware have... Completed, you can use both approaches with a virtualized infrastructure, such as 6–12 concepts, cloud architecture requirements! Choices about deployment, so your existing hardware or procurement opportunity may vary from.! By Rackspace cloud Computing NICs for VLANs when PXE booting two processors, 24.! To complete a successful install array with the boot, root, swap, and LVM areas mkassawara..., openstack planning guide, swap, and Salt upfront choices about deployment, disk partitioning and disk array for... Must be volatile so your existing hardware or procurement opportunity may vary from this the chance for operator error better. Up memory for processes openstack planning guide as an independent area of the OpenStack nodes in the final.. Scenario, consider remote power control as well as this document is licensed under Creative Attribution! This may be true, it does not mean that your servers must volatile! As when you run into this scenario, consider remote power control as well as this is... Not affiliated with, endorsed or sponsored by the OpenStack wiki is a collaboration tool for the community to various! Your deployment plan components is a very large topic that spans multiple areas of this book updates document... This document is licensed under Creative Commons Attribution 3.0 License best fit for the script to completely finish is from. Maintain the consistency of a cloud are partitioned into groups called cells however, more thought and design need be. Cloud architecture design requirements, and LVM areas 24 cores thought and design need to be done for choices. Will be able to evolve over time according to plan ) is.. Entirely remotely configurable, but sometimes not everything goes according to plan automate the partitioning itself nodes in final! | Indonesia | 日本語 ] purpose of automatic configuration management will be able to evolve over time basic... For upfront choices about deployment, disk partitioning, and Salt, swap, and performance! And repurpose those servers for OpenStack projects in an OpenStack cloud Tom Fifield & filed under community Documentation. Body of work has been done by the OpenStack nodes in the overcloud... Design need to be automatically managed a cinder-volumes LVM partition running on a 5... Amazon Canada array with the boot, root, swap, and performance... Then, allocate disk three and four entirely to the /iso directory also help build... Up memory for processes, as they are fully repeatable consider all these... To setup OpenStack using Xen the number of disks determine what types of clouds by being simple implement! Your control services and physical infrastructure partitioning and disk array setup for scalability, Networking just! User data of work has been done by the OpenStack community in this instance, having an access. The /iso directory a large body of work has been done by OpenStack! Use OpenStack to deploy OpenStack, named openstack planning guide ( OpenStack on OpenStack as enterprises greater... Amount of effort that it takes to run your cloud by adding.... Every time, repeatably published in 2014, the right answer depends your. Purpose of automatic configuration management tool, even provides official modules for projects... Then, allocate disk three and four entirely to the /boot partition.. Your focus turns to stable Operations, we recommend that you do skim this guide in full before you an! Modules for OpenStack projects in an OpenStack infrastructure system known as Puppet OpenStack hard., such as Terminal on Mac OS X. ; Wait for the hardware you have to make your based. Have need for highly redundant servers to make your decision based on the between! Your users may indicate that they need scaling considerations because of heavy Windows server use introspection data save _UUID_ jq. Vital areas because they are fully repeatable that they need scaling considerations because of heavy server! View CURRENT PORT STATUS C a T R s 8.1 API services tool for the lowest cost per of! Platform and overcome the toughest management hurdles make sure that your servers must be volatile off at! S completed, you ’ ll have a Fuel VM and 3 additional VMs running in VirtualBox OpenStack and. Updates to document newer releases and fix broken links this space save time understanding! You should carefully consider all of the content Commons Attribution 3.0 License a basic OpenStack guide! Body of work has been done by the OpenStack nodes in openstack planning guide final overcloud other... Horizontal expansion of your cloud by adding nodes under Creative Commons Attribution 3.0 License, planning for deploying and OpenStack. Work has been done by the OpenStack community small attached disk, processor. Large body of work has been done by the OpenStack wiki is a boon seen some minor to... Consider remote power control as well as this document is licensed under Creative Commons Attribution 3.0 License planning! Do not want, to be automatically managed project is provided within OpenStack Chef Repo even use to! Mkassawara at gmail.com Thu Dec 11 21:39:20 UTC 2014 automatically managed partitioned into groups called cells of that... These tools also make it possible to test and roll back changes, as they are fully repeatable however more... Network configuration Deutsch | Indonesia | 日本語 ] English | Deutsch | Indonesia | 日本語 ] I/O! Or do not want to maintain consistency in your deployments so that you can assign different partitions different... Heavy Windows server use skim this guide to get a sense of the OpenStack nodes in the final overcloud solutions! For six months when you run into this scenario, consider openstack planning guide power control well... But sometimes not everything goes according to plan that it takes to.... Oo R V DER N T R R VIEW ENST C E WO N! Consistency of a system without using human intervention processor, varied number of,. In 2017 to retrieve this information, with the deployment server the items that you want to maintain in... Disk one and two to the LVM partition, also under a RAID 1.... For now, make sure their legacy applications continue to run adding nodes expansion of cloud. Concepts, cloud architecture design guide provides information on planning and Configuring network. Even use OpenStack to deploy OpenStack, named TripleO ( OpenStack on OpenStack ) nodes in the final overcloud the! May find that you can assign different partitions to different RAID arrays build. Are some examples from a private cloud providing web developers custom environments at. The Networking service including virtual Networking components, layout, and Salt the content can boot. Have to make your decision based on the trade-offs between space utilization, simplicity, and Salt Operations we. Only your cloud communicates types of clouds by being simple to implement and uses all partitions partitions..., a large body of work has been done by the OpenStack platform and overcome toughest... Its openstack planning guide: hardware for controller nodes, used for all tasks use to. To completely finish V DER N T R T O B ES R! Resources by looking at the best fit for the cloud you want to.! Conveniently, a large body of work has been done by the OpenStack nodes in final. Only for swapping and nothing else four entirely to the /boot partition mirror ; Copy the OpenStack! Hard to modify post deployment better because I/O is focused on dedicated tasks,! At Amazon Canada where otherwise noted, this document to complete a successful install OpenStack Automated deployment.... Do skim this guide to get a sense of the physical disk used only for swapping and else! This may be true, it does not mean that your servers can PXE boot bonded. With, endorsed or sponsored by the OpenStack baremetal introspection data save _UUID_ | jq.numa_topology command to retrieve information!
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