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Effective Virtual CPU Configuration with QEMU and Libvirt
Effective Virtual CPU Configuration with QEMU and libvirt Kashyap Chamarthy <[email protected]> Open Source Summit Edinburgh, 2018 1 / 38 Timeline of recent CPU flaws, 2018 (a) Jan 03 • Spectre v1: Bounds Check Bypass Jan 03 • Spectre v2: Branch Target Injection Jan 03 • Meltdown: Rogue Data Cache Load May 21 • Spectre-NG: Speculative Store Bypass Jun 21 • TLBleed: Side-channel attack over shared TLBs 2 / 38 Timeline of recent CPU flaws, 2018 (b) Jun 29 • NetSpectre: Side-channel attack over local network Jul 10 • Spectre-NG: Bounds Check Bypass Store Aug 14 • L1TF: "L1 Terminal Fault" ... • ? 3 / 38 Related talks in the ‘References’ section Out of scope: Internals of various side-channel attacks How to exploit Meltdown & Spectre variants Details of performance implications What this talk is not about 4 / 38 Related talks in the ‘References’ section What this talk is not about Out of scope: Internals of various side-channel attacks How to exploit Meltdown & Spectre variants Details of performance implications 4 / 38 What this talk is not about Out of scope: Internals of various side-channel attacks How to exploit Meltdown & Spectre variants Details of performance implications Related talks in the ‘References’ section 4 / 38 OpenStack, et al. libguestfs Virt Driver (guestfish) libvirtd QMP QMP QEMU QEMU VM1 VM2 Custom Disk1 Disk2 Appliance ioctl() KVM-based virtualization components Linux with KVM 5 / 38 OpenStack, et al. libguestfs Virt Driver (guestfish) libvirtd QMP QMP Custom Appliance KVM-based virtualization components QEMU QEMU VM1 VM2 Disk1 Disk2 ioctl() Linux with KVM 5 / 38 OpenStack, et al. libguestfs Virt Driver (guestfish) Custom Appliance KVM-based virtualization components libvirtd QMP QMP QEMU QEMU VM1 VM2 Disk1 Disk2 ioctl() Linux with KVM 5 / 38 libguestfs (guestfish) Custom Appliance KVM-based virtualization components OpenStack, et al. -
QEMU Parameter Jungle Slides
Finding your way through the QEMU parameter jungle 2018-02-04 Thomas Huth <[email protected]> Legal ● Disclaimer: Opinions are my own and not necessarily the views of my employer ● “Jungle Leaves” background license: CC BY 3.0 US : https://creativecommons.org/licenses/by/3.0/us/ Image has been modified from the original at: https://www.freevector.com/jungle-leaves-vector-background 2 Introduction 3 Why a guide through the QEMU parameter jungle? 4 Why a guide through the QEMU parameter jungle? ● QEMU is a big project, supports lots of emulated devices, and lots of host backends ● 15 years of development → a lot of legacy ● $ qemu-system-i386 -h | wc -l 454 ● People regularly ask about CLI problems on mailing lists or in the IRC channels → Use libvirt, virt-manager, etc. if you just want an easier way to run a VM 5 General Know-How ● QEMU does not distinguish single-dash options from double-dash options: -h = --h = -help = --help ● QEMU starts with a set of default devices, e.g. a NIC and a VGA card. If you don't want this: --nodefaults or suppress certain default devices: --vga none --net none 6 Getting help about the options ● Parameter overview: -h or --help (of course) ● Many parameters provide info with “help”: --accel help ● Especially, use this to list available devices: --device help ● To list parameters of a device: --device e1000,help ● To list parameters of a machine: --machine q35,help 7 e1000 example ● $ qemu-system-x86_64 --device e1000,help [...] e1000.addr=int32 (PCI slot and function¼) e1000.x-pcie-extcap-init=bool (on/off) e1000.extra_mac_registers=bool (on/off) e1000.mac=str (Ethernet 6-byte MAC Address¼) e1000.netdev=str (ID of a netdev backend) ● $ qemu-system-x86_64 --device \ e1000,mac=52:54:00:12:34:56,addr=06.0 8 General Know How: Guest and Host There are always two parts of an emulated device: ● Emulated guest hardware, e.g.: --device e1000 ● The backend in the host, e.g.: --netdev tap Make sure to use right set of parameters for configuration! 9 “Classes” of QEMU parameters ● Convenience : Easy to use, but often limited scope. -
Industrial Control Via Application Containers: Migrating from Bare-Metal to IAAS
Industrial Control via Application Containers: Migrating from Bare-Metal to IAAS Florian Hofer, Student Member, IEEE Martin A. Sehr Antonio Iannopollo, Member, IEEE Faculty of Computer Science Corporate Technology EECS Department Free University of Bolzano-Bozen Siemens Corporation University of California Bolzano, Italy Berkeley, CA 94704, USA Berkeley, CA 94720, USA fl[email protected] [email protected] [email protected] Ines Ugalde Alberto Sangiovanni-Vincentelli, Fellow, IEEE Barbara Russo Corporate Technology EECS Department Faculty of Computer Science Siemens Corporation University of California Free University of Bolzano-Bozen Berkeley, CA 94704, USA Berkeley, CA 94720, USA Bolzano, Italy [email protected] [email protected] [email protected] Abstract—We explore the challenges and opportunities of control design full authority over the environment in which shifting industrial control software from dedicated hardware to its software will run, it is not straightforward to determine bare-metal servers or cloud computing platforms using off the under what conditions the software can be executed on cloud shelf technologies. In particular, we demonstrate that executing time-critical applications on cloud platforms is viable based on computing platforms due to resource virtualization. Yet, we a series of dedicated latency tests targeting relevant real-time believe that the principles of Industry 4.0 present a unique configurations. opportunity to explore complementing traditional automation Index Terms—Industrial Control Systems, Real-Time, IAAS, components with a novel control architecture [3]. Containers, Determinism We believe that modern virtualization techniques such as application containerization [3]–[5] are essential for adequate I. INTRODUCTION utilization of cloud computing resources in industrial con- Emerging technologies such as the Internet of Things and trol systems. -
Many Things Related to Qubesos
Qubes OS Many things Many things related to QubesOS Author: Neowutran Contents 1 Wiping VM 2 1.1 Low level storage technologies .................. 2 1.1.1 Must read ......................... 2 1.1.2 TL;DR of my understanding of the issue ........ 2 1.1.3 Things that could by implemented by QubesOS .... 2 2 Create a Gaming HVM 2 2.1 References ............................. 2 2.2 Prerequise ............................. 3 2.3 Hardware ............................. 3 2.4 Checklist .............................. 4 2.5 IOMMU Group .......................... 4 2.6 GRUB modification ........................ 4 2.7 Patching stubdom-linux-rootfs.gz ................ 5 2.8 Pass the GPU ........................... 6 2.9 Conclusion ............................. 6 2.10 Bugs ................................ 6 3 Create a Linux Gaming HVM, integrated with QubesOS 7 3.1 Goals ................................ 7 3.2 Hardware used .......................... 7 3.3 Main steps summary ....................... 7 3.3.1 Detailled steps ...................... 8 3.3.2 Using a kernel provided by debian ............ 8 3.4 Xorg ................................ 8 3.4.1 Pulseaudio ......................... 11 3.5 Final notes ............................ 11 3.6 References ............................. 12 4 Nitrokey and QubeOS 12 5 Recovery: Mount disk 12 6 Disposable VM 13 6.1 Introduction ............................ 14 6.1.1 References ......................... 14 6.1.2 What is a disposable VM? ................ 14 6.2 Playing online video ....................... 14 6.3 Web browsing ........................... 15 6.4 Manipulating untrusted files/data ................ 16 1 6.5 Mounting LVM image ...................... 17 6.6 Replace sys-* VM ......................... 18 6.7 Replace some AppVMs ...................... 18 7 Building a new QubesOS package 18 7.1 References ............................. 18 7.2 Goal ................................ 18 7.3 The software ............................ 19 7.4 Packaging ............................. 19 7.5 Building ............................. -
Virtualization Getting Started Guide
Red Hat Enterprise Linux 7 Virtualization Getting Started Guide Introduction to virtualization technologies available with RHEL Last Updated: 2020-02-24 Red Hat Enterprise Linux 7 Virtualization Getting Started Guide Introduction to virtualization technologies available with RHEL Jiri Herrmann Red Hat Customer Content Services [email protected] Yehuda Zimmerman Red Hat Customer Content Services [email protected] Dayle Parker Red Hat Customer Content Services Laura Novich Red Hat Customer Content Services Jacquelynn East Red Hat Customer Content Services Scott Radvan Red Hat Customer Content Services Legal Notice Copyright © 2019 Red Hat, Inc. This document is licensed by Red Hat under the Creative Commons Attribution-ShareAlike 3.0 Unported License. If you distribute this document, or a modified version of it, you must provide attribution to Red Hat, Inc. and provide a link to the original. If the document is modified, all Red Hat trademarks must be removed. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, the Red Hat logo, JBoss, OpenShift, Fedora, the Infinity logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux ® is the registered trademark of Linus Torvalds in the United States and other countries. Java ® is a registered trademark of Oracle and/or its affiliates. XFS ® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. -
Fortianalyzer VM Install Guide This Document, Which Describes Installing Fortianalyzer VM in Your Virtual Environment
FortiAnalyzer VM - Install Guide VERSION 5.4 FORTINET DOCUMENT LIBRARY http://docs.fortinet.com FORTINET VIDEO GUIDE http://video.fortinet.com FORTINET BLOG https://blog.fortinet.com CUSTOMER SERVICE & SUPPORT https://support.fortinet.com FORTIGATE COOKBOOK http://cookbook.fortinet.com FORTINET TRAINING SERVICES http://www.fortinet.com/training FORTIGUARD CENTER http://www.fortiguard.com END USER LICENSE AGREEMENT http://www.fortinet.com/doc/legal/EULA.pdf FEEDBACK Email: [email protected] May 18, 2017 FortiAnalyzer VM 5.4 Install Guide 05-540-309958-20170518 TABLE OF CONTENTS Change Log 5 Introduction 6 FortiAnalyzer documentation 6 License and System Requirements 7 Licensing 7 Evaluation license 7 Minimum system requirements 8 Registration and Deployment 9 Register with Customer Service & Support 9 Deployment package 11 Deployment package contents 12 Deploying the appliance 13 Citrix XenServer deployment example 14 Create the virtual machine 14 Configure hardware settings 15 Start the virtual machine 17 Hyper-V deployment example 18 Create the virtual machine 18 Configure hardware settings 19 Start the virtual machine 23 KVM deployment example 24 Create the virtual machine 24 Configure hardware settings 26 Start the virtual machine 27 Open Xen deployment example 28 Create and configure the virtual machine 28 VMware deployment example 31 VMware vSphere 31 Deploy the OVF file 31 Configure hardware settings 34 Power on the virtual machine 35 Azure deployment example 37 Deploy the virtual machine 37 AWS deployment example 39 AWS Marketplace 1-Click Launch 39 AWS EC2 console 41 Initial Configuration 46 GUI access 46 Enable GUI access 46 Connect to the GUI 47 Upload the license file 48 Configure your FortiAnalyzer VM 48 Index 50 Change Log Change Log Date Change Description 2016-03-17 Initial release. -
KVM Based Virtualization and Remote Management Srinath Reddy Pasunuru St
St. Cloud State University theRepository at St. Cloud State Culminating Projects in Information Assurance Department of Information Systems 5-2018 KVM Based Virtualization and Remote Management Srinath Reddy Pasunuru St. Cloud State University, [email protected] Follow this and additional works at: https://repository.stcloudstate.edu/msia_etds Recommended Citation Pasunuru, Srinath Reddy, "KVM Based Virtualization and Remote Management" (2018). Culminating Projects in Information Assurance. 53. https://repository.stcloudstate.edu/msia_etds/53 This Starred Paper is brought to you for free and open access by the Department of Information Systems at theRepository at St. Cloud State. It has been accepted for inclusion in Culminating Projects in Information Assurance by an authorized administrator of theRepository at St. Cloud State. For more information, please contact [email protected]. 1 KVM Based Virtualization and Remote Management by Srinath Reddy Pasunuru A Starred Paper Submitted to the Graduate Faculty of St. Cloud State University in Partial Fulfillment of the Requirements for the Degree Master of Science in Information Assurance May, 2018 Starred Paper Committee Susantha Herath, Chairperson Ezzat Kirmani Sneh Kalia 2 Abstract In the recent past, cloud computing is the most significant shifts and Kernel Virtual Machine (KVM) is the most commonly deployed hypervisor which are used in the IaaS layer of the cloud computing systems. The Hypervisor is the one which provides the complete virtualization environment which will intend to virtualize as much as hardware and systems which will include the CPUs, Memory, network interfaces and so on. Because of the virtualization technologies such as the KVM and others such as ESXi, there has been a significant decrease in the usage if the resources and decrease in the costs involved. -
QEMU for Xen Secure by Default
QEMU for Xen secure by default Deprivileging the PC system emulator Ian Jackson <[email protected]> FOSDEM 2016 with assistance from Stefano Stabellini guest guest Xen PV driver IDE driver Xen PV protocol mmio, dma, etc. qemu Emulated IDE controller Xen PV backend (usually), syscalls (usually) dom0 (usu.dom0) kernel Device driver kernel Device driver PV HVM ... ... ... ... ... from Xen Security Team advisories page, http://xenbits.xen.org/xsa/ Xen on x86 modes, and device model bug implications Current status for users of upstream Xen and distros and future plans Status Device model Notes bugs mean PV Fully supported Safe (no DM) Only modified guests HVM qemu in dom0 Fully supported Vulnerable Current default as root HVM qemu stub DM Upstream but not Safe Ancient qemu qemu-xen-trad. in most distros. Build system problems HVM qemu stub DM In progress Safe Rump build system rump kernel Hard work! is mini distro HVM qemu dom0 Targeting No privilege esc. Defence in depth not as root Xen 4.7 Maybe dom0 DoS Hopefully, will be default Xen on x86 modes, and device model bug implications Current status for users of upstream Xen and distros and future plans Status Device model Notes bugs mean PV Fully supported Safe (no DM) Only modified guests HVM qemu in dom0 Fully supported Vulnerable Current default as root HVM qemu stub DM Upstream but not Safe Ancient qemu qemu-xen-trad. in most distros. Build system problems HVM qemu stub DM In progress Safe Rump build system rump kernel Hard work! is mini distro HVM qemu dom0 Targeting No privilege esc. -
Hyperlink: Virtual Machine Introspection and Memory Forensic Analysis Without Kernel Source Code Jidong Xiao Boise State University
Boise State University ScholarWorks Computer Science Faculty Publications and Department of Computer Science Presentations 1-1-2016 HyperLink: Virtual Machine Introspection and Memory Forensic Analysis without Kernel Source Code Jidong Xiao Boise State University Lei Lu VMware Inc. Haining Wang University of Delaware Xiaoyun Zhu Futurewei Technologies © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. doi: 10.1109/ICAC.2016.46 HyperLink: Virtual Machine Introspection and Memory Forensic Analysis without Kernel Source Code Jidong Xiao∗, Lei Luy, Haining Wangz, Xiaoyun Zhux ∗Boise State University, Boise, Idaho, USA yVMware Inc., Palo Alto, California, USA zUniversity of Delaware, Newark, Delaware, USA xFuturewei Technologies, Santa Clara, California, USA Abstract— Virtual Machine Introspection (VMI) is an ap- nel rootkit detection [8], [9], kernel integrity protection [10], proach to inspecting and analyzing the software running inside a and detection of covertly executing binaries [11]. Being the virtual machine from the hypervisor. Similarly, memory forensics main enabling technology for cloud computing, virtualiza- analyzes the memory snapshots or dumps to understand the tion allows us allocating finite hardware resources among runtime state of a physical or virtual machine. The existing VMI a large number of software systems and programs. As the and memory forensic tools rely on up-to-date kernel information key component of virtualization, a hypervisor runs directly of the target operating system (OS) to work properly, which often requires the availability of the kernel source code. -
Hardware Virtualization
Hardware Virtualization E-516 Cloud Computing 1 / 33 Virtualization Virtualization is a vital technique employed throughout the OS Given a physical resource, expose a virtual resource through layering and enforced modularity Users of the virtual resource (usually) cannot tell the difference Different forms: Multiplexing: Expose many virtual resources Aggregation: Combine many physical resources [RAID, Memory] Emulation: Provide a different virtual resource 2 / 33 Virtualization in Operating Systems Virtualizing CPU enables us to run multiple concurrent processes Mechanism: Time-division multiplexing and context switching Provides multiplexing and isolation Similarly, virtualizing memory provides each process the illusion/abstraction of a large, contiguous, and isolated “virtual” memory Virtualizing a resource enables safe multiplexing 3 / 33 Virtual Machines: Virtualizing the hardware Software abstraction Behaves like hardware Encapsulates all OS and application state Virtualization layer (aka Hypervisor) Extra level of indirection Decouples hardware and the OS Enforces isolation Multiplexes physical hardware across VMs 4 / 33 Hardware Virtualization History 1967: IBM System 360/ VM/370 fully virtualizable 1980s–1990s: “Forgotten”. x86 had no support 1999: VMWare. First x86 virtualization. 2003: Xen. Paravirtualization for Linux. Used by Amazon EC2 2006: Intel and AMD develop CPU extensions 2007: Linux Kernel Virtual Machines (KVM). Used by Google Cloud (and others). 5 / 33 Guest Operating Systems VMs run their own operating system (called “guest OS”) Full Virtualization: run unmodified guest OS. But, operating systems assume they have full control of actual hardware. With virtualization, they only have control over “virtual” hardware. Para Virtualization: Run virtualization-aware guest OS that participates and helps in the virtualization. Full machine hardware virtualization is challenging What happens when an instruction is executed? Memory accesses? Control I/O devices? Handle interrupts? File read/write? 6 / 33 Full Virtualization Requirements Isolation. -
ZERTO VIRTUAL REPLICATION - PREREQUISITES & REQUIREMENTS for MICROSOFT HYPER-V ENVIRONMENTS ZVR-REH-5.5U3 Rev01 Dec2017
ZERTO VIRTUAL REPLICATION - PREREQUISITES & REQUIREMENTS FOR MICROSOFT HYPER-V ENVIRONMENTS ZVR-REH-5.5U3 Rev01 Dec2017 Zerto Virtual Replication is installed in a site with virtual machines to be protected as well as in the site where these virtual machines will be recovered. This document describes Zerto Virtual Replication - Prerequisites and Requirements for Microsoft Hyper-V Environments. For the requirements of VMware, Microsoft Azure or AWS protected sites, go to myZerto > Technical Documentation portal. ■ The Zerto Virtual Replication installation includes: ■ A Zerto Virtual Manager (ZVM): This is a Windows service, and manages replication at the site level. ■ A Virtual Replication Appliance (VRA): This is a virtual machine installed on each Hyper-V host to move the data to be replicated from the protected to the recovery site. ■ A Virtual Backup Appliance (VBA): This is a Windows service and manages offsite backups within Zerto Virtual Replication on each site. The VBA service runs on the same machine as the Zerto Virtual Manager service. ■ Zerto Virtual Replication can be installed at multiple sites and each site can be paired to any other site. ■ Each site is managed with the Zerto User Interface. ■ Zerto Virtual Replication also supports both the protected and recovery sites being managed by one SCVMM, for small branch offices. For example, from one datacenter to another datacenter, both managed by the same SCVMM. See the following sections: ■ “For Each Zerto Virtual Replication Hyper-V Site”, on page 1 ■ “Considerations and Guidelines”, on page 2 ■ “For Virtual Replication Appliances on the Hyper-V Host”, on page 3 ■ “Routable Networks”, on page 3 ■ “Minimum Bandwidth”, on page 3 ■ “Requirements for the Zerto Virtual Manager Web Client”, on page 3 ■ “Recommended Best Practices for the Zerto Virtual Replication Hyper-V Site”, on page 4 ■ “Open Firewall Ports for Hyper-V Environments”, on page 5 For Each Zerto Virtual Replication Hyper-V Site ■ Microsoft System Center 2012 R2, or 2016 with VMM (SCVMM) and at least one Hyper-V host. -
Cisco Vwaas on Microsoft Hyper-V
Cisco vWAAS on Microsoft Hyper-V This chapter describes how to use Cisco vWAAS on Microsoft Hyper-V, and contains the following sections: • About Cisco vWAAS on Microsoft Hyper-V, on page 1 • Supported Host Platforms, Software Versions, and Disk Type, on page 2 • System Requirements for Cisco vWAAS on Microsoft Hyper-V, on page 2 • Deployment Options for Cisco vWAAS on Microsoft Hyper-V, on page 3 • OVA Package Formats for vWAAS on Microsoft Hyper-V, on page 4 • Installing Cisco vWAAS on Microsoft Hyper-V, on page 6 • Activating and Registering vWAAS on Hyper-V, on page 8 • Traffic Interception Methods for Cisco vWAAS on Microsoft Hyper-V, on page 9 • Operating Guidelines for Cisco vWAAS on Microsoft Hyper-V, on page 11 • Configuring GPT Disk Format for vWAAS-50000 on Hyper-V with Akamai Connect, on page 14 About Cisco vWAAS on Microsoft Hyper-V Microsoft Hyper-V, available for Cisco vWAAS in WAAS Version 6.1.x and later, is a native hypervisor for x86_64 systems to enable platform virtualization. Cisco vWAAS on Microsoft Hyper-V extends Cisco networking benefits to Microsoft Windows Server Hyper-V deployments. It improves utilization, consolidates server workloads, and reduces costs. To achieve this, Cisco vWAAS on Hyper-V uses hardware virtualization to enable multiple operating systems to run on a single host, and allows the operating systems to share the same underlying physical hardware. Cisco vWAAS on Microsoft Hyper-V supports all the WAN-optimization functionalities that are supported by physical Cisco WAAS devices. Physical memory for Cisco vWAAS on Hyper-V is provided by a Cisco UCS server.