Linux Alias Example

You can use Linux's graphical tools to easily monitor your system's network performance. In this article, you will learn how to use the MRTG (SNMP-based, monitoring http://www.aliyun.com/zixun/aggregation/10374.html "> Network traffic tools) and Webalizer (the tool that analyzes the site hit Ratio). Many servers, routers, and firewalls are insured in their object markers (OIDs) that they ...

Earlier, we were already running Hadoop on a single machine, but we know that Hadoop supports distributed, and its advantage is that it is distributed, so let's take a look at the environment. Here we use a strategy to simulate the environment. We use three Ubuntu machines, one for the master and the other two for the slaver. At the same time, this host, we use the first chapter to build a good environment. We use the steps similar to the first chapter to operate: 1, the operating environment to take ...

Overview 2.1.1 Why a Workflow Dispatching System A complete data analysis system is usually composed of a large number of task units: shell scripts, java programs, mapreduce programs, hive scripts, etc. There is a time-dependent contextual dependency between task units In order to organize such a complex execution plan well, a workflow scheduling system is needed to schedule execution; for example, we might have a requirement that a business system produce 20G raw data a day and we process it every day, Processing steps are as follows: ...

Pseudo-distributed environment for Windows configuration hadoop-1.1.0 (cont.) Blog Category: Bigdata Windowshadoop in the previous article, I introduced a solution to common problems. However, when I reload the system, and once again install Cygwin and hadoop-1 in the previous article (http://winseclone.iteye.com/blog/1734737), I find that the pseudo distributed environment uses m ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall when optimizes the website, 301 redirects is the stationmaster must an essential optimization, and 301 redirects mainly uses for moves the content from one position to another position. In fact, in understanding is also very simple, such as I have some content on the http://www.abc.com/a.html, and then I want to refactor the site, so I want to move the content on this page to http://www.abc.com/b.html. So, I can actually ...

The intermediary transaction SEO diagnose Taobao guest Cloud host Technology Hall mouse A website, the current traffic is bigger and larger, has plans to use many servers plan, but discovered some domain name strategy of that year, now handles up a little trouble. There used to be a station, the site used by the www.abc.com domain name, where the BBS directory has a forum, this forum now traffic is too large, and the root directory compared to the traffic is much smaller. Now want to move BBS to a new server, find the problem. Now I know that there are two ways: one is to put this ...

The Hosts file is just a list of IP addresses and corresponding server names. The server typically checks this file before querying DNS. If a name with a corresponding IP address is found, DNS is not queried at all. Unfortunately, if the IP address of the host changes, you must also update the file. This is not a big problem for a single machine, but it's tough to update the entire company. For ease of administration, it is usually in the file to place only the loopback interface and the local machine name records, and then use the centralized HTTP://WWW.A ...

With the extensive deployment of multi-core systems, clusters, grids and even cloud computing in recent years, virtualization technology has become more and more advantageous in business applications, not only reducing it costs, but also enhancing system security and reliability, and the concept of virtualization has gradually deepened into people's daily work and life. Aiming at the x86 platform, this paper first gives the basic concept and classification of virtualization technology, then expounds the realization principle and challenge of pure software virtualization, and finally introduces ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall 2013 is a year of speed up the domestic website." How to say, some free CDN service began to spread among stationmaster. At first it was very useful, and later found that these products more or less have some problems. For example, no record of the site can not be used, such as the impact of search engine included, such as the need to configure DN ...

Now almost any application, such as a website, a web app and a mobile app, needs a picture display function, which is very important for the picture function from the bottom up. Must have a forward-looking planning picture server, picture upload and download speed is of crucial importance, of course, this is not to say that it is to engage in a very NB architecture, at least with some scalability and stability. Although all kinds of architecture design, I am here to talk about some of my personal ideas. For the picture server IO is undoubtedly the most serious resource consumption, for web applications need to picture service ...