public dns name

Many enterprises have set up a number of Web sites to meet the needs of employees, in order to save money, these sites usually use the virtual host technology, that is, on the same server to set up multiple sites, employees use level two domain names to access these sites. However, the workload of maintaining these level two domain names is very high, but we can solve this problem by using a generic domain name resolution technique, so that support fo

DNS load balancing technology is to configure multiple IP addresses for the same host name on the DNS server, the DNS server returns different resolution results for each query based on the IP address recorded by the host in the DNS file, and directs the client access to dif

What is a domain name? What makes a domain name? A domain name is the name used to search for a website on the internet. It is an important identifier on the internet and is equivalent to a host's house number.Each host corresponds to an IP address. Each IP address consists of a series of numbers, such as 101.25.11.34

This is a creation in Article, where the information may have evolved or changed. previously used the go language to write a real-time picture downloader, mainly considering that the go language of the DNS resolution of the support is friendly to the process, that DNS parsing does not block the execution thread, will only block the current process, and by the way the net.lookuphost/resolveipaddr of Go Imple

I. Overview Now to deal with DNS domain name resolution, in fact, this is a previous article in C + + to implement the remaining problems in Ping, to do the work is the process of the ping Red Line part: CMD under the Domain Name Resolution command is Nslookup, such as "Nslookup www.baidu.com" The results are as follows: In which, the address returned is w

"TCP/IP Detailed Volume 1: Protocol" 14th DNS: Domain Name System---reading notes1. Introduction5. Pointer queryA part of DNS that has been hard to understand is the pointer query, which is given an IP address that returns the domain name corresponding to that address.When an organization joins the Internet and obtains

转载请说明出处：http://blog.csdn.net/cywosp/article/details/38017027 在上一篇文章（http://blog.csdn.net/cywosp/article/details/38014581）中讲到了使用HTTP重定向来实现server的负载均衡，本文则解说还有一种实现server集群的负载均衡方案——DNS域名解析。 DNS（Domain Name System）是因特网的一项服务，它作为域名和IP地址相互映射的一个分布式数据库，可以使人更方便的訪问互联网。人们在通过浏览器訪问站点时仅仅须要记住站点的域名就可以，而不须要记住那些不太easy理解的IP地址。在DNS系统中有一

The role and type of 1.DNS systemThe role of DNS system in the network is to maintain an address database, which records the various host domain names also IP address correspondence, in order to provide the client program forward or reverse the Address query service, that is, forward parsing and reverse parsing.Forward resolution: According to the domain name che

to the 21php.com. zone file on the local machine. ④ Test the DNS server After modifying the corresponding DNS file, run the "ndc restart" command to restart the service. In redhat 7.1 or a later version, run the following command: /Etc/rc. d/init. d/named restart Or /Etc/rc. d/init. d/named reload Make the change take effect. To test DNS, you can find a client a

/Etc/resolv. conf This file is a DNS domain name resolution configuration file. Its format is very simple. Each line starts with a keyword, followed by configuration parameters.Resolv. conf has four keywords:Nameserver # define the IP address of the DNS serverDomain # define a local domain nameSearch # define the domain name