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Open source software Xen warns of high-risk vulnerabilities, multiple cloud services to take action

Many cloud computing services face a brief outage due to the new open source software Xen update to fix the vulnerabilities found. Xen is well known in the cloud computing industry and is developed by the University of Cambridge, where users include mainstream vendors such as Amazon EC2, Aliyun ECS, IBM SoftLayer, Linode and Rackspace Cloud. By Csdn, Tencent, Tencent Cloud, Tencent Foundation sponsored by the "Open Source technology Conference 2015" (Open source Marvell Conference, abbreviation O ...

Xen Cloud Platform 2-xci compilation (LFS)

When you joined the Xen Summit last week, you heard the XCI (Xen Client Initiative) project (see Xen Cloud Platform (XCP)), Xen clients hypervisor:the Ultimate The "project is" to Define a standard framework for supporting service domain virtual Applian ...

Research on virtual machine dynamic migration strategy based on Xen

Research on virtual machine dynamic migration strategy based on Xen Zhang Pu Liaoning University in this paper, a dynamic migration strategy based on Xen virtual machine is proposed for the Xen platform environment, combining the actual application scenario and the Xen bottom migration. The specific work is as follows: first, in order to carry out virtual machine migration in the cloud computing environment, Xen Migration uses a comparison between passing the page bitmap and skipping the page bitmap to determine whether the memory page is retransmission. For page bitmap comparison brings multiple retransmission increase network transmission overhead, put forward the memory optimization algorithm based on AR model, according to the memory page of the record all modified ...

Algorithm of memory optimization for virtual machine migration based on Xen

Virtual machine migration time memory optimization algorithm based on Xen Chen Tingwei Zhang Pu Zhang Zhongqing for virtual machine migration in a cloud computing environment, Xen Migration uses a comparison between passing a page bitmap and skipping a page bitmap to determine whether the memory page is retransmission. The problem of multiple retransmission to increase network transport overhead for page bitmap comparisons A memory optimization algorithm based on AR model is proposed, which predicts the next time of memory page modification according to the memory page modification time interval of all records, and retransmission when the next modification time is greater than a certain threshold. The experimental results show that the base ...

Xen Cloud Platform 3--XCI compilation (Makefile analysis Notes)

Today continues our XCI project study, in how to analyze the Xen source article has said to the analysis Linux system this kind of big project first may start from makefile, then xci makefile what is different? Let's take a look at the following: Http://xenbits.xen.org/gitweb?p=xenclient/build.git;a=summary open the Makefile in the Project tree directory, which is typically the makefile under the root directory ...

An elastic cloud architecture based on Xen virtualization technology

The flexible cloud architecture based on Xen virtualization technology Li Hingi, Jie cloud computing provides users with infrastructure as service (IaaS) through virtualization, and the load of applications and services on the IaaS platform is dynamically changing, which leads to a dynamic change in the demand for virtual resources. Therefore, it is the key to improve the service performance and resource utilization of the cloud platform to collect and analyze the consumption of virtual resources in cloud platforms and to flexibly dispatch them according to demand. From the perspective of load balancing and lowering the cost of cloud platform users, according to the cloud ...

Design and implementation of a cloud security service architecture

1. Research background cloud Computing is the product of Grid computing, distributed computing, parallel computing, utility computing, networked storage, virtualization, load balancing, and the development of traditional computer technology and network technologies. With the help of SaaS, PaaS, IaaS, MSP and other advanced business models, this powerful computing power is distributed to the end-user.   The core idea of cloud computing is to manage and dispatch a large number of computing resources with network connection, and form a computing resource pool to serve the users on demand. With the cloud computing gradually become the trend of future development, has been the current industry and even the whole ...

Comparison of 3 well-known cloud manufacturers under hat-trick

September 23, virtualization technology for the Linux kernel Xen was given a hat-trick with 3 security vulnerabilities. Xen vulnerabilities can be jumped out of the virtual host environment (ultra vires), or read other user data, control the hypervisor itself (host). A remote attacker could exploit a vulnerability that could cause the host system to crash and deny service to legitimate users. Xen Vulnerabilities and impact range is not small, such as Amazon AWS Large-scale restart server-the entire repair cycle lasted 5 days (from September 25 7 o'clock in the afternoon to September 30 5 o'clock in the afternoon), impact ...

How to select Vps:xen and OPENVZ technical performance test

Intermediary trading http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnosis Taobao guest Cloud host technology Hall is ready to buy a VPS, compared to a number of VPS providers, foreign, domestic,   Pay attention to whether it is openvz good or xen good problem, so consult some information, get some experience, share. The following translation from Hostingfu.com,observ ...

Design and implementation of a cloud computing Environment Network Security Service architecture

1. Research background cloud Computing is the product of Grid computing, distributed computing, parallel computing, utility computing, networked storage, virtualization, load balancing, and the development of traditional computer technology and network technologies. With the help of SaaS, PaaS, IaaS, MSP and other advanced business models, this powerful computing power is distributed to the end-user.   The core idea of cloud computing is to manage and dispatch a large number of computing resources with network connection, and form a computing resource pool to serve the users on demand. As cloud computing gradually becomes ...

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