This document provides an introduction to KVM (Kernel-based Virtual Machine), an open source hypervisor that allows running multiple operating systems on a single computer. KVM is integrated into the Linux kernel since version 2.6.20 and provides full virtualization capabilities. It supports hardware virtualization features, sound, snapshots, PCI passthrough, live migration, and more through a layered model. KVM can be managed through tools like Libvirt, Virsh, and Ovirt and is well-suited for cloud computing due to its security, speed, scalability, and reliability.
Virtualization is one of the hottest trends occurring in the IT industry. We dive into what virtualization is and why you should be thinking about implementing it into your network plan.
Virtio is an I/O virtualization framework for Linux that provides an abstraction layer for virtual devices. It standardizes the interface between paravirtualized guest operating systems and hypervisors to improve efficiency and promote code reuse. Virtio defines front-end drivers for the guest and back-end drivers for the hypervisor to communicate. It uses virtual queues and buffer abstractions to encapsulate data and commands exchanged between the guest and hypervisor. Major hypervisors like KVM and Xen support virtio to virtualize network, block, and other device types in a standardized way.
Virtualization with KVM (Kernel-based Virtual Machine)Novell
As a technical preview, SUSE Linux Enterprise Server 11 contains KVM, which is the next-generation virtualization software delivered with the Linux kernel. In this technical session we will demonstrate how to set up SUSE Linux Enterprise Server 11 for KVM, install some virtual machines and deal with different storage and networking setups.
To demonstrate live migration we will also show a distributed replicated block device (DRBD) setup and a setup based on iSCSI and OCFS2, which are included in SUSE Linux Enterprise Server 11 and SUSE Linux Enterprise 11 High Availability Extension.
This document summarizes a talk on redesigning Xen's memory sharing (grant) mechanism. It proposes moving grant-related hypercalls to guest domains to allow unilateral revocation of grants by domains and enable better reuse of grants. An evaluation shows the redesigned mechanism with grant reuse reduces overhead and improves I/O performance compared to the traditional approach.
This document provides an introduction to KVM (Kernel-based Virtual Machine), an open source hypervisor that allows running multiple operating systems on a single computer. KVM is integrated into the Linux kernel since version 2.6.20 and provides full virtualization capabilities. It supports hardware virtualization features, sound, snapshots, PCI passthrough, live migration, and more through a layered model. KVM can be managed through tools like Libvirt, Virsh, and Ovirt and is well-suited for cloud computing due to its security, speed, scalability, and reliability.
Virtualization is one of the hottest trends occurring in the IT industry. We dive into what virtualization is and why you should be thinking about implementing it into your network plan.
Virtio is an I/O virtualization framework for Linux that provides an abstraction layer for virtual devices. It standardizes the interface between paravirtualized guest operating systems and hypervisors to improve efficiency and promote code reuse. Virtio defines front-end drivers for the guest and back-end drivers for the hypervisor to communicate. It uses virtual queues and buffer abstractions to encapsulate data and commands exchanged between the guest and hypervisor. Major hypervisors like KVM and Xen support virtio to virtualize network, block, and other device types in a standardized way.
Virtualization with KVM (Kernel-based Virtual Machine)Novell
As a technical preview, SUSE Linux Enterprise Server 11 contains KVM, which is the next-generation virtualization software delivered with the Linux kernel. In this technical session we will demonstrate how to set up SUSE Linux Enterprise Server 11 for KVM, install some virtual machines and deal with different storage and networking setups.
To demonstrate live migration we will also show a distributed replicated block device (DRBD) setup and a setup based on iSCSI and OCFS2, which are included in SUSE Linux Enterprise Server 11 and SUSE Linux Enterprise 11 High Availability Extension.
This document summarizes a talk on redesigning Xen's memory sharing (grant) mechanism. It proposes moving grant-related hypercalls to guest domains to allow unilateral revocation of grants by domains and enable better reuse of grants. An evaluation shows the redesigned mechanism with grant reuse reduces overhead and improves I/O performance compared to the traditional approach.
This document discusses network virtualization from an architectural and technological perspective. It covers the principles of network virtualization including coexistence, recursion, inheritance, and revisitation. It then discusses different types of network device virtualization including NIC, router, link, and data path virtualization. It also covers network virtualization technologies like overlay networks and virtual private networks. Finally, it discusses applications of network virtualization like provisioning independent networks, improving robustness and reducing hardware costs.
Linux のネットワーク設定情報を取得し、描画するツール "plotnetcfg" のインストール方法や描画サンプル。
"How to" for installing / using "plotnetcfg" which scans networking config of Linux machine and plots a diagram of the configuration hierarchy.
This document discusses multicast in OpenStack. It begins by defining multicast as one-to-many communication driven by receivers using a multicast IP address, without the need for the sender to duplicate packets. It then outlines the components of multicast including addressing, group management using IGMP, and multicast routing. The document notes that while OpenStack does not natively support multicast, it is possible to enable it by configuring IGMP snooping, security groups, and using plugins like Cisco's ASR1k and ACI drivers for Neutron. It recommends using provider networks without Neutron routing or these plugins to implement multicast routing externally. Finally, it discusses some multicast use cases and limitations.
Virtualization - Kernel Virtual Machine (KVM)Wan Leung Wong
KVM is a virtualization solution that leverages hardware virtualization extensions like Intel VT or AMD-V for full virtualization. It uses kernel modules, QEMU, and libvirt to manage virtual machines. KVM is widely used in Linux distributions and offers benefits like isolation, emulation, and easy migration. It allows hosting multiple virtual machines with their images stored on a shared LVM storage that is connected via iSCSI. Management tools like virsh and virt-manager can be used to control the virtual machines from the command line or GUI.
Tim Jenks (eeGeo) gave a quick overview of how they built their indoor 3D mapping application with QGIS. Presented at the 6th Scottish QGIS UK user group meeting.
This document discusses MQTT (Message Queue Telemetry Transport), an open source protocol for lightweight messaging. It describes MQTT's publish-subscribe model and use of a broker to transmit messages. It then provides examples of using MQTT topics to exchange data and introduces the open source Paho and Mosquito MQTT client and broker software.
This document discusses network virtualization from an architectural and technological perspective. It covers the principles of network virtualization including coexistence, recursion, inheritance, and revisitation. It then discusses different types of network device virtualization including NIC, router, link, and data path virtualization. It also covers network virtualization technologies like overlay networks and virtual private networks. Finally, it discusses applications of network virtualization like provisioning independent networks, improving robustness and reducing hardware costs.
Linux のネットワーク設定情報を取得し、描画するツール "plotnetcfg" のインストール方法や描画サンプル。
"How to" for installing / using "plotnetcfg" which scans networking config of Linux machine and plots a diagram of the configuration hierarchy.
This document discusses multicast in OpenStack. It begins by defining multicast as one-to-many communication driven by receivers using a multicast IP address, without the need for the sender to duplicate packets. It then outlines the components of multicast including addressing, group management using IGMP, and multicast routing. The document notes that while OpenStack does not natively support multicast, it is possible to enable it by configuring IGMP snooping, security groups, and using plugins like Cisco's ASR1k and ACI drivers for Neutron. It recommends using provider networks without Neutron routing or these plugins to implement multicast routing externally. Finally, it discusses some multicast use cases and limitations.
Virtualization - Kernel Virtual Machine (KVM)Wan Leung Wong
KVM is a virtualization solution that leverages hardware virtualization extensions like Intel VT or AMD-V for full virtualization. It uses kernel modules, QEMU, and libvirt to manage virtual machines. KVM is widely used in Linux distributions and offers benefits like isolation, emulation, and easy migration. It allows hosting multiple virtual machines with their images stored on a shared LVM storage that is connected via iSCSI. Management tools like virsh and virt-manager can be used to control the virtual machines from the command line or GUI.
Tim Jenks (eeGeo) gave a quick overview of how they built their indoor 3D mapping application with QGIS. Presented at the 6th Scottish QGIS UK user group meeting.
This document discusses MQTT (Message Queue Telemetry Transport), an open source protocol for lightweight messaging. It describes MQTT's publish-subscribe model and use of a broker to transmit messages. It then provides examples of using MQTT topics to exchange data and introduces the open source Paho and Mosquito MQTT client and broker software.
This document introduces version control and discusses its importance and challenges. It describes the different types of version control systems including local, centralized, and distributed systems. Key concepts like committing changes, updating workspaces, branching, and merging are explained. The document also highlights challenges like conflicts and provides tips to prevent them. Finally, it lists some popular web-based and open source version control systems and projects.
The document appears to be notes from BookReading by Wei-Tsung Su. It includes discussions of unique and non-unique customers and their interests, how hearing aids use digital signal processing to make sounds clearer, comparisons of different companies' products and their features, and classifications of expected and unexpected customers and uses.
OAuth is an open standard for authorization that allows users to grant client applications access to protected resources like APIs without sharing their passwords. It provides a standard way for third party applications to obtain limited access to a user's data. The OAuth protocol involves an authorization server that issues access tokens to clients after being granted authorization by the resource owner. Access tokens are then used by clients to access protected resources from the resource server, such as API calls or account information.
Wi-Fi Direct allows devices to directly connect and exchange data without needing an existing Wi-Fi network or hotspot. One device acts as the Group Owner to which other devices connect. Key mechanisms defined for Wi-Fi Direct include device discovery, group formation, and power management features. Wi-Fi Direct aims to simplify connectivity for use cases like printing or sharing media directly between devices.
This document introduces MQTT (MQ Telemetry Transport), a publish-subscribe messaging protocol designed for low-bandwidth, high-latency or unreliable networks. MQTT is optimized for constrained devices and mobile applications, enabling ubiquitous connectivity for the Internet of Things. It supports asynchronous messaging with publish/subscribe semantics and different levels of quality of service. MQTT has a small code footprint and lightweight implementation making it suitable for sensor applications and resource-constrained devices. It has gained popularity for use in home automation, gardening, transportation, and other Internet of Things applications.
NFC allows contactless communication between devices over short distances. It uses radio frequency identification (RFID) standards to establish communication between devices, which can be used to transmit data like contact information, URLs, or initiate Bluetooth pairing when tapped. NFC operates at 13.56MHz and has a maximum range of about 4 cm. It supports three main operating modes and uses the NFC Data Exchange Format (NDEF) to structure payloads containing text, URLs, or other data in NDEF records for transmission between NFC-enabled devices.
13. CMMI流程領域
驗證(Verification)
The purpose of Verification is to assure that selected work
products meet their specified requirements
確認(Validation)
The product or product components are validated to ensure that
they are suitable for use in their intended operating environment.
例如,
需求規格書、專案計畫、系統設計等工作產品都需要被驗證
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28. 伺服器規格
硬體規格
At least 2 GHz processor
At least 1GB RAM
At least 600MB of free disk
space after OS has been
installed
軟體規格
Windows Server 2008 R2
SQL Server 2012
客戶端規格
硬體規格
At least 1 GHz processor
At least 1 GB of RAM
軟體規格
支援Chrome、Firefox、與IE
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