Virtual Instance

Cloudstack is an open-source, highly available and scalable cloud computing platform that supports the management of most mainstream virtual machine managers, such as KVM and XEN. There are two types of storage in Cloudstack: Primary storage provides disk volumes for virtual machine instances, and level two storage provides templates for virtual machine instances to install mirrored files for systems and disk snapshots of virtual machine instances. Both types of storage support network-attached storage (NAS). Figure 0. Cloudstack architecture This article we will be a Linux host ...

We are very pleased to announce that you can now create a virtual network (vnet) across the entire region. When you create a new virtual network, you can associate it with a zone instead of the Association group. New services deployed to a zone virtual network can use any services provided by the zone (such as a8/a9 size, internal load balancing, reserved IP, instance-level public IP). Before this feature is released, Vnets can only bind to one expansion unit, or more accurately, the Association group. An association group is a grouping concept that refers to a part of a data center, or ...

apache bind the same virtual directory multiple instances of different domain names To bind multiple domains to achieve the same directory to use the serveralias method, below we take www.jzread.com as an example, namevirtualhost *: 80 <virtualhost *: 80> servername web-demo ...

This article describes how to build a virtual application pattern that implements the automatic extension of the http://www.aliyun.com/zixun/aggregation/12423.html "> virtual system Pattern Instance nodes." This technology utilizes virtual application mode policies, monitoring frameworks, and virtual system patterns to clone APIs. The virtual system mode (VSP) model defines the cloud workload as a middleware mirroring topology. The VSP middleware workload topology can have one or more virtual mirrors ...

On June 6, 2012, we announced that some of the powerful new features on Windows Azure are now available for previewing, including new Windows Azure virtual machines (VMS). One of the most powerful things about Windows Azure virtual machines is that they use your ability to store accounts, that is, the operating system and hard drive are automatically saved in Windows Azure by default, and you can choose whether to replicate geographically. This makes Windows Azure virtual machine A migration to your non-cloud database application to wi ...

What is reserved IP address?   When do I need to reserve an IP address? With the recent PowerShell release, Microsoft Azure allows users to reserve public IPV4 addresses in Azure subscriptions. You can keep an IP address at any time in your subscription, or you can associate it with a cloud service deployment that is in the area where the IP address is reserved. This new bulletin is specifically for IP addresses that are targeted to the public Internet. The Azure platform already supports reserved internal IP, as described here. &nb ...

When we deploy an internal infrastructure as a service (IaaS) cloud computing, there is a wide range of security issues that need our consideration, is that enterprises must not only consider the requirements of meeting security best practices, but also should be in line with regulatory Request. This article will discuss in detail how to control virtual machine instances, management platforms, and network and storage infrastructures that support IaaS implementation. Virtual Machine Instances First, the operating system and applications for the virtual machine (VM) must be locked and must be properly configured using existing rules, such as from ...

In this article, we look at the most common use cases for setting up a high-availability (HA) and load-balanced environment: Load balancing enables you to http://www.aliyun.com/zixun/aggregation/13999.html "> Workloads are dispersed across multiple instances, increasing throughput and achieving redundancy. Use case: Load level across two WEB servers running Apache HTTP Server or IBM HTTP server ...

Eucalyptus Elastic Utility Computing architecture for linking Your Programs to useful Bae (Eucalyptus) is an open source software infrastructure, Used to compute the flexible, practical cloud computing of a cluster or workstation cluster. It was originally a research project at the University of California at Santa Barbara School of Computer Science, ...

Add another port instance to the web server [apache + php tutorial] / * Find your apache installation directory, find the httpd.conf file, search # Listen this sentence, add the following listen 800 listen 801 listen 802 Here is the test, You need to increase the different listening port, the apache web port opened Well, I ...