Mirantis OpenStack

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    Mirantis OpenStack is the zero lock-in distro that makes deploying your cloud easier, and more flexible, and more reliable.

  • On-Demand

    Mirantis OpenStack Express is on demand Private-Cloud-as-a-Service. Fire up your own cloud and deploy your workloads immediately.

Solutions Engineering

Services offerings for all phases of the OpenStack lifecycle, from green-field to migration to scale-out optimization, including Migration, Self-service IT as a Service (ITaaS), CI/CD. Learn More

Deployment and Operations

The deep bench of OpenStack infrrastructure experts has the proven experience across scores of deployments and uses cases, to ensure you get OpenStack running fast and delivering continuous ROI.

Driver Testing and Certification

Mirantis provides coding, testing and maintenance for OpenStack drivers to help infrastructure companies integrate with OpenStack and deliver innovation to cloud customers and operators. Learn More

Certification Exam

Know OpenStack? Prove it. An IT professional who has earned the Mirantis® Certificate of Expertise in OpenStack has demonstrated the skills, knowledge, and abilities needed to create, configure, and manage OpenStack environments.

OpenStack Bootcamp

New to OpenStack and need the skills to run an OpenStack cluster yourself? Our bestselling 3 day course gives you the hands-on knowledge you need.

The #1 Pure Play OpenStack Company

Some vendors choose to “improve” OpenStack by salting it with their own exclusive technology. At Mirantis, we’re totally committed to keeping production open source clouds free of proprietary hooks or opaque packaging. When you choose to work with us, you stay in full control of your infrastructure roadmap.

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Posts by: Piotr Siwczak


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In one of my previous posts I outlined some considerations when deploying OpenStack and different approaches to distribution of OpenStack services across hardware to provide HA. However, it is not the OpenStack services themselves that drive the value of going to cloud. I mean, even once high-availability of OpenStack services is assured, the instances and storage will not perform optimally …


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In a couple of recent posts I covered some fundamental concepts of OpenStack networking, including VlanManager and floating IPs. This post builds upon the recent content and aims to present how traffic flows in different scenarios addressed by OpenStack. Reading the prior posts (VlanManager, FloatingIPs) is highly recommended before going through this blog post. Also, consider before reading that all the scenarios …


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In a previous post I explained the basic mode of network operation for OpenStack, namely FlatManager and its extension, FlatDHCPManager. In this post, I'll talk about VlanManager. While flat managers are designed for simple, small scale deployments, VlanManager is a good choice for large scale internal clouds and public clouds. As its name implies, VlanManager relies on the use of …


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Over time, networking in OpenStack has been evolving from a simple, barely usable model, to one that aims to support full customer isolation. To address different user needs, OpenStack comes with a handful of "network managers". A network manager defines the network topology for a given OpenStack deployment. As  of the current stable "Essex" release of OpenStack, one can choose …