what is primary dns

of a server and several clients is located in one CIDR block. One server is used as the DNS server. Note that DHCP cannot be used for the IP address of the DNS server. static IP addresses must be used. Server IP:192.168.0.1, The Client IP range is:192.168.0.2 -- 192.168.0.2

, but also saves the index file 2. index files that create indexes that consume disk space. The general situation is not too serious, but if you create multiple combinations of indexes on a large table, the index file will swell up quickly. End of article: So much is said to use indexes to improve the efficiency of database execution. But indexing is just one fac

file 2. index files that create indexes that consume disk space. The general situation is not too serious, but if you create multiple combinations of indexes on a large table, the index file will swell up quickly. End of article: So much is said to use indexes to improve the efficiency of database execution. But indexing is just one factor in improving efficienc

MySQL index type: PRIMARY, what's the difference between index,unique,fulltext,spaial? What are the applicable occasions? , fulltextspaial MySQL Common indexes are: Primary key index, unique index, normal index, full-text index, composite indexPRIMARY key (primary key index) ALTER TABLE ' table_name ' Add

, there is another way, is curl backCurle_couldnt_resolve_host This error, indicating that the system provided by the DNS has not been used, then you use the socket to connect Google DNS to do domain name resolution! Search on the Internet some source code, toss a few days, finally transplant success! This way, every t

. In general, the problem can be solved. Some ISP vendors (broadband service providers), will have their own custom fill in the content, such as: Nanjing railcom (MOBILE), you must specify a DNS address, the preferred DNS server is: 211.138.200.69, alternate DNS server is 2

Ubuntu 15.10 sets static ip Address Allocation fixed ip Address Settings dns settings gateway command line configuration ip fixed ip address does not take effect what to do, ubuntu15.10 Files to be used: Configure Interface Information /Etc/network/interfaces Configuration content: Auto eth0 Iface eth0 inet static Address 192.168.216.188 Gateway 192.168.216.2 Netmask 255.255.255.0 Configure

This is a creation in Article, where the information may have evolved or changed. Source Address What is DNSMASQ (excerpt from the network) DNSMASQ provides DNS caching and DHCP service functionality. As a domain name resolution server (DNS), DNSMASQ can increase the speed

Recently found that the home wireless router Internet is very slow, some friends come to play a mobile phone connected to the Internet, but access to the IP are very normal, ping the site's domain name, found that the domain name can not be resolved. According to the accumulation of knowledge, can not resolve the domain name may be the problem of DNS, in the cmd input ipconfig/all, (please check the cmd co

Failure problem: Each computer in the local area network is accessing the Internet server with a "Userenv" error in the log file, id "1000", and the query is a DNS error, but DNS is provided by the ISP and cannot ping. Troubleshooting:

/named_mem_stats.txt";// allow-query {localhost;}; #注释只允许本地请求3, edit the area configuration file forward and backward analysis[[emailprotected]named]#vim/etc/named.rfc1912.zones #编辑区域配置文件zone "Dove.com" in{# Last line add forward region name typeslave; #类型为slave (must be slave from dnstype file type) file "Slaves/dove.com.zone"; #指定正向区域文件, Slaves directory is designed for use from the server, synchronization from the

Files to use:Configuring interface Information/etc/network/interfacesConfiguration content:Auto Eth0Iface eth0 inet StaticAddress 192.168.216.188Gateway 192.168.216.2Netmask 255.255.255.0Configure DNS/etc/resolvconf/resolv.conf.d/baseConfiguration content: NameServer 192.168.216.2To view DNS:/etc/resolv.confCommand:View System Network InformationIfconfigRestart Network Service/etc/init.d/networking restartT

Sometimes when we use a computer, we find that the network suddenly becomes slow, and we may clean up the DNS cache, but we find that the DNS cache is not clean, so what if your computer is a Win7 system and cannot clear the DNS c

servers with blocked IP addresses. Because the UDP protocol is used for domain name query, the server does not immediately realize that the host of the other party has been taken offline (or may also be related to the method of the electronic envelope IP address, and does not return an ICMP packet), and does not give up the query after the timeout. However, because the DNS server

HostsThe Hosts file is a file that is responsible for fast resolution of IP addresses and domain names in the Linux system, and is stored in the/etc/directory in ASCII format. The Hosts file contains a mapping between the IP address and the host name, and also includes the host alias. in the absence of a domain name resolution server, all network programs on the

What are the differences among KEY, primary key, unique key, and INDEX in MySQL? mysqlunique You can split the questions raised in the questions to solve them step by step. In MySQL, KEY and INDEX are synonymous. This problem can be simplified to the difference between primary key, unique key and INDEX. And the three are exactly the INDEX Division,

DNS is responsible for mapping domain names to IP addresses, which is the cornerstone of the entire Internet. DNS is important to us, and if your DNS is tampered with, then your network

Here first introduces the next Nali this open source applet, project address: http://code.google.com/p/qqwry/ Here's a description of the website from the project's owner: Copy Code code as follows: Download nali-0.2.tar.gz–2011-09-11 Release (download link one, download link II)NALI-0.1.TAR.GZ–2009-08-16 Release Description Nali, the name is taken from the Chinese "where" pinyin. Nali contains a set of command-line programs who