Cloudstack High Availability

A, virtualization virtualization refers to the ability to simulate multiple virtual machines on the same physical machine. Each virtual machine has a separate processor, memory, hard disk, and network interface logically. The use of virtualization technology can improve the utilization of hardware resources, so that multiple applications can run on the same physical machine with each other isolated operating environment. There are also different levels of virtualization, such as virtualization at the hardware level and virtualization at the software level. Hardware virtualization refers to the simulation of hardware to obtain a similar to the real computer environment, you can run a complete operating system. In the hardware virtual ...

A few days ago, a very small number of cloud computing vendors can provide a flexible, scalable, has been available for enterprise practical application of the complete cloud computing products or services. Citrix's new product for cloud computing allows enterprise users to create a new infrastructure for cloud computing, and can be transferred to others for use. Using the products in the Citrix Systems Company Cloud Suite, IT administrators can manage virtual machine management programs, desktop delivery, federated identities, and user profiles. The private cloud built using Citrix's products has one benefit, all ...

OpenStack has a very high popularity, Cloudstack has plenty of money, Eucalyptus and Amazon established a close relationship. OpenStack, created jointly by Rackspace and NASA in 2010, is undoubtedly highly popular. Now it has established partnerships with giants such as At&t, IBM and Hewlett-Packard, who are committed to OpenStack as the basis for their private cloud solutions. Another open source Cloud platform Cloudsta ...

"Guide" the author (Xu Peng) to see Spark source of time is not long, note the original intention is just to not forget later. In the process of reading the source code is a very simple mode of thinking, is to strive to find a major thread through the overall situation. In my opinion, the clue in Spark is that if the data is processed in a distributed computing environment, it is efficient and reliable. After a certain understanding of the internal implementation of spark, of course, I hope to apply it to practical engineering practice, this time will face many new challenges, such as the selection of which as a data warehouse, HB ...

Ignacio M. Liorente, from the Opennebula project, recently published an article entitled EUCALYPTUS, Cloudstack, OPENSTACK and opennebula:a tale of NonBlank Models's blog article analyzes the differences between the four cloud management platforms of Eucalyptus, Cloudstack, OpenStack and Opennebula from the perspective of application scenarios. ...

According to a recent report published by Gartner analyst Lydia Leong, companies are carefully evaluating open source cloud platforms. At the 2013 Beijing (International) Open Source Conference, we learned more about the development and application of open source cloud platform in China, which involved the main two open source cloud platform OpenStack and Cloudstack in the market now. In the afternoon of the venue, open source OpenStack promoter, China OpenStack User Group (cosug) promoter Du Yujie ...

You've heard it, but it's worth repeating that the network is a bottleneck in a private cloud. Now that servers and storage technologies have developed into shared resources, cloud administrators are free to invoke these resources, but the network is still manual. To improve flexibility, private cloud networks must be virtualized, and software definition networks (SDN) are a cost-effective approach. "Businesses need to respond quickly, like service providers, to internal customers. To do this, enterprises need to enable self-service it, and the biggest obstacle to this is the network, "is developing based on SDN network virtualization ...

"Editor's note" Recently, Anshu and Rajkumar, from Aerospike, posted an article on the high Scalability website claiming that it could obtain the million TPS at a cost of USD 1.68 per hour, which was affected by Redis Labs's Itamar Haber Using a non-benchmark program, it seems to the author that the benchmark is a trap, so what about the Redis test results? The following is the original: one day ago, I saw from Aerospike ...

When it consulting firm Opencredo plans to deliver three new applications to a major insurer in seven months, it has set itself three goals: shortening development time, allowing frequent customer changes, and architecting a system that can handle unpredictable traffic spikes. CEO Russel Miles believes that with the help of cloud foundry open source framework and other Open-source software, Opencredo has done "some heavy work", such as configuring virtual machines and adjusting storage volumes ...

"Editor's note" in the "Pioneer" series of business, High-performance, Wang Tao to build beyond the MongoDB NoSQL, we and Wang Tao talk about High-performance, have a business sequoiadb build experience. Readers need to interpret the advantages of each nosql from the data, we also invited relevant experts at home and abroad to MongoDB, SEQUOIADB, Cassandra, hbase four NoSQL Benchmarking, and published test cases, related data and test rules. This time we will give you the test of domestic experts, ...