How Does Nagios Work

Back-end development work related to big data for more than a year, with the development of the Hadoop community, and constantly trying new things, this article focuses on the next Ambari, the new http://www.aliyun.com/zixun/aggregation/ 　　14417.html ">apache project, designed to facilitate rapid configuration and deployment of Hadoop ecosystem-related components of the environment, and provide maintenance and monitoring capabilities. As a novice, I ...

Preface Having been in contact with Hadoop for two years, I encountered a lot of problems during that time, including both classic NameNode and JobTracker memory overflow problems, as well as HDFS small file storage issues, both task scheduling and MapReduce performance issues. Some problems are Hadoop's own shortcomings (short board), while others are not used properly. In the process of solving the problem, sometimes need to turn the source code, and sometimes to colleagues, friends, encounter ...

When an enterprise migrates its core IT systems to a private cloud or public cloud network, the work is not over. 　　Now there is a different set of technical issues that need to be addressed: how to manage the cloud to ensure that the enterprise's investment returns, providing the desired efficiency and return on investment. Cloud management and cloud monitoring have become more important as the Amazon EC2 (Flex Computing Cloud) Service outage occurred this April. In that incident, the IT field saw what would happen when the cloud environment encountered a failure ...

With the advent of new technologies such as cloud computing and virtualization, the evolution of data centers may turn itself into a very different environment. However, any data center that operates smoothly and successfully always requires some basic elements. 　　Whether the scale of the data center is like a vertical wardrobe or a plane, or even rumors that Google is building a yacht-type data center, these elements are critical. 1, environmental control standardization, predictable environment is the cornerstone of any High-quality data center. It's not just about getting the equipment to cool down and maintaining the right humidity (according to Wikipedia, recommend ...)

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Apache Hadoop is now widely adopted by organizations as the industry standard for MapReduce implementations, and the Savanna project is designed to allow users to run and manage Hadoop over OpenStack. Amazon has been providing Hadoop services over EMR (Elastic MapReduce) for years. Savanna needed information from users to build clusters such as Hadoop's version, cluster topology, node hardware details, and some other information. In mentioning ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall book The above, this time the main share of Linux security configuration. First, the port use Iptables all prohibit, after only allow open the necessary ports, such as 21,22,80, but in addition to 80, FTP and SSH port we'd better modify, so also give ...

Cloud services are a common service today, and many entrepreneurs are using it. However, when an enterprise migrates a core IT system to a private cloud or a public cloud network, it does not mean that it ends. Today, there is a different set of technical issues to deal with, that is, how to manage the cloud to ensure that the investment of the enterprise is rewarded with the expected efficiency and return on investment. Cloud management and cloud monitoring have been the focus of many businesses since this April, when Amazon EC2 (the flexible Computing cloud) had a service outage. This accident, let it field see when cloud environment meets ...

What are the most reliable Web application monitoring programs? What criteria should we use to compare? First consider whether you want to solve one or more of the following problems: 498) this.width=498 ' OnMouseWheel = ' javascript:return big ( This) "border=" 0 "alt=" How to select the standard Web application monitoring tool "src=" http://s9.51c ...