Best Practice Linux Guide: Virtualization

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A quick-start guide to virtualization issues

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Best Practice Linux Guide: Virtualization

  1. 1. Best practice Linux guide: Virtualization A quick-start guide to virtualization issues www.linuxit.com
  2. 2. Open Source alternatives are offering real competition for Linux server virtualization. www.linuxit.com
  3. 3. WHY OPT FOR VIRTUALIZATION? Virtualization can... www.linuxit.com
  4. 4. WHY OPT FOR VIRTUALIZATION? Virtualization can... Consolidate the number of servers used www.linuxit.com
  5. 5. WHY OPT FOR VIRTUALIZATION? Virtualization can... Consolidate the number of servers used Reduce power consumption www.linuxit.com
  6. 6. WHY OPT FOR VIRTUALIZATION? Virtualization can... Consolidate the number of servers used Reduce power consumption Save money on hardware www.linuxit.com
  7. 7. WHY OPT FOR VIRTUALIZATION? Virtualization can... Consolidate the number of servers used Reduce power consumption Save money on hardware Act as a first step towards Cloud readiness www.linuxit.com
  8. 8. WHY OPT FOR VIRTUALIZATION? Virtualization can... Consolidate the number of servers used Reduce power consumption Save money on hardware Act as a first step towards Cloud readiness Offer flexible disaster recovery www.linuxit.com
  9. 9. WHICH TO CHOOSE? The choice used to be simple, all you had to do was choose a hypervisor: www.linuxit.com
  10. 10. WHICH TO CHOOSE? The choice used to be simple, all you had to do was choose a hypervisor: VMware if you needed all the most advanced features www.linuxit.com
  11. 11. WHICH TO CHOOSE? The choice used to be simple, all you had to do was choose a hypervisor: VMware if you needed all the most advanced features Oracle VM to run Oracle www.linuxit.com
  12. 12. Today it’s more complex: there are options to blend and multi-source hypervisors for different aspects of the enterprise. And now, Open Source alternatives offer real competition in the Linux server virtualization market. Here’s a brief run-down of the alternatives: www.linuxit.com
  13. 13. UNDERLYING TECHNOLOGIES -ESX ESX Server Full x86 virtual machine supports any x86 OS guest Now also supports paravirtualization VMware (Proprietary) www.linuxit.com
  14. 14. UNDERLYING TECHNOLOGIES - XEN KVM Paravirtualization that modifies the guest OS but with hardware-assisted CPU virtualization Xen 3.x also supports fully virtualized guest OSs Citrix and Oracle, for example Xen is Open Source but products based on it are often not www.linuxit.com
  15. 15. UNDERLYING TECHNOLOGIES - KVM KVM KVM is part of the mainline Linux kernel Supports Linux and Windows It runs on x86 and x86-64 systems with hardware supporting virtualization extensions. Red Hat Enterprise Virtualization Based on Open Source software Red Hat Enterprise Virtualization includes management tools similar to VMware and enables system admins to maintain control of the server environment. www.linuxit.com
  16. 16. Choices There are about 30 different providers offering IaaS (Infrastructure as a Service) integration products and destinations www.linuxit.com
  17. 17. Choices Cloud integration is easiest when the Clouds are based on interoperable environments - for example Red Hat Enterprise Linux and Amazon Web Services www.linuxit.com
  18. 18. Choices Red Hat CloudForms can manage hybrid Clouds using existing resources such as hypervisors from many different vendors. www.linuxit.com
  19. 19. Linux virtualization to-do list Consider a multiple vendor hypervisor strategy Consider enlisting the services of a Linux support specialist to help make an assessment around which applications to virtualize and implement Linux server virtualization Guard against ‘virtual sprawl’ - when planning your infrastructure and deployment, think of virtual machines as if they were physical machines www.linuxit.com
  20. 20. Linux virtualization to-do list Consider your workload and the underlying hardware. Be aware of the limits of your solution and the migration tools you will need depending on whether it is possible to carry out a simple physical to virtual migration Consider whether there are constraints born of how the application has been written to perform in a physical or virtual server environment www.linuxit.com
  21. 21. Linux virtualization to-do list Look at your entire Cloud strategy and consider moving workloads to and from different public Cloud destinations. Ensure staff get the relevant training so that they can take full advantage of your Linux virtualization. www.linuxit.com
  22. 22. Linux virtualization to-do list Look at your entire Cloud strategy and consider moving workloads to and from different public Cloud destinations. Ensure staff get the relevant training so that they can take full advantage of your Linux virtualization. www.linuxit.com Hitesh Patel is Senior Business Partner Manager UKI, Virtualization and Cloud at Red Hat
  23. 23. www.linuxit.com For more information on using Linux in your organisation, download our Open Architectures Readiness Assessment paper today! OPEN ARCHITECTURES IS YOUR ORGANISATION READY? www.linuxit.com OPEN ARCHITECTURES IS YOUR ORGANISATION READY? www.linuxit.com Download Now

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