what is nslookup

After a domain name resolution record is added or modified, it generally takes one hour or several minutes to take effect, but it generally takes 24 hours to take effect. So how can we check whether the resolution has taken effect? In fact, it is

"Domestic large-scale portal site architecture analysis" is divided into two parts, the original author was written in 2004. But it still has a good reference meaning to the present large-scale website structure. The architecture of large community

1. Xargs Usage Detailed   because many commands do not support | Piping to pass parameters, and there is a need in daily work, there is a xargs command, such as: find/sbin-perm +700 |ls-l This command is wrong. find/sbin-perm +700 |xargs ls-l This

I. PrefaceThe new version of Foxmail provides the "express mail" function. At first, I did not know how to use it. Later I learned to set the IP address of the local DNS server in tools> System Options.I think this new function is quite useful. You

DNS protocol details I. PrefaceThe new version of Foxmail provides the "express mail" function. At first, I did not know how to use it. Later I learned to set the IP address of the local DNS server in tools> System Options.I think this new function

Please let me know if there is something wrong or unclear in this article. thank you! DDNS configuration instances (DHCP + DNSDDNS) are a basic task in network management. However, as the network grows, it will be very troublesome to frequently

3 Ways to implement multi-tasking:Multi-process ModeMultithreaded modeMulti-process + multithreaded modeA thread is the smallest execution unit, and a process consists of at least one thread.Multi-process (multiprocessing)Unix/linux with the fork ()

IP address |j2se How to use Java to obtain the IP address of a domain name? The class that provides this functionality is called java.net.InetAddress. Let's assume that there is a domain name that uses a static getbyname to regain a inetaddress and

"The main content of this blog post" Introduction to bind server (including Introduction to Client Tools Dig) Configuring forward parsing DNS servers Configure Reverse resolution DNS server Configuring a secondary DNS server and

Windows Network CommandsPingThe ping command checks the connection to another computer by sending an ICMP echo request message. This is a test command to troubleshoot connection failures, and displays help if no parameters are present.ping [-t] //

The DNS architecture under FreeBSD-Linux Enterprise Application-Linux server application information. The following is a detailed description. Generally, a computer only needs to configure domain name resolution and does not need to run the name

DNS service configuration and application 3-Linux Enterprise Application-Linux server application information. The following is a detailed description. 16. Reverse parsing of the region file: The following is an example of

Article Title: LinuxDNS server troubleshooting. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Currently,

To: xx Note: The local IP address is 118.229.139.68. 1. Install the following package Bind-libs-9.3.6-4.P1.el5bind-9.3.6-4.P1.el5bind-utils-9.3.6-4.P1.el5bind-chroot-9.3.6-4.P1.el5caching-nameserver-9.3.6-4.P1.el5   Run the rpm-Qa | grep

In this DocumentApplies To:Oracle server-enterprise edition-version 11.2.0.1 to 11.2.0.3 [Release 11.2]Information in this document applies to any platform.PurposeRuninstaller (OUI) reports INS-20802 while running Oracle Cluster verification Utility

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.

A (Address) Record Is used to specify the IP address record corresponding to the Host Name (or domain name. You can direct the website server under this domain name to your web server. You can also set a second-level domain name for your domain name.

Document directory   The customer called at last night and said that the website could not be accessed. He immediately ran up, entered the domain name, and asked my friend to enter it.Change access from IP address OK, DNS problem. I came to the

Database Connection Method [root@gd02-qa-plxt2-nodomain /]# mysql -u vipdns -pvipdns -h 10.0.3.99mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || pdns |+--------------------

I. Installation Yum install bind-utils.x86_64 Yum install bind Ii. Configuration Vim/etc/named. conf Edit the file content as follows: ######################################## #################### Options { Listen-on port 53 {127.0.0.1; 192.168.4.103