dns driver network service

Configure the Dynamic DNS service in Linux In network management, DNS service management is a basic task. As the number of users expands, it is not easy to manually modify the DNS regional database files. The Research on Dynamic

Management Section DHCP and DNS on the same server Login Address:ssh root/192.168.20.210 password:jyd315.com DHCP Master profile:/etc/dhcp/dhcpd.conf (where to define network segments and IP address ranges) DNS Master profile:/var/named/chroot/etc/named.conf (defines the service listener port and

in/etc/hosts. GATEWAY = 192.168.1.1 # Set the IP address of the GATEWAY connected to the local machine. * ********* After the above files are modified, You need to restart the NIC to take effect:# Service network restart******** CentOS DNS Modification After all the above changes, when you ping a domain name, you will be unable to get through, but ping the corre

NSCD (name service cache daemon ). 1apt-get install nscd modify the configuration file/etc/nscd. conf, enable dns cache, and modify this line of 1enable-cache hosts yes. in addition to dns cache, this service can also cache passwd, group, and servers. the cache for these items is temporarily unavailable. restart the n

During the stress tests of the linux dns Cache and NSCD service over the past two days, it was found that using webbench to press a domain name is several times slower than that of an IP address, and the nginx concurrency is also low when the domain name is pressed. I tested it multiple times and suspected that the time was spent on dns resolution. perform manual

Linux DNS cache, NSCD serviceThese two days to do stress test, found that with webbench pressure domain name than the pressure IP address several times slower, and pressure domain name when nginx concurrency is also very low. Repeated tests many times, suspect time is spent on DNS resolution. Do manual parsing in/etc/hosts:1echo "211.157.145.103 m.app518.com" >>/etc/hostsAfter the pressure, the speed is nor

/ Wkiom1uzx03j4oawaabzazawdfa926.jpg "alt=" Wkiom1uzx03j4oawaabzazawdfa926.jpg "/>shutting down the firewall service iptables stop 　　 and Setenforce 0　　To your own network card is set to DNS, is to set the machine for DNS resolution, redirected to the network card configura

Servers are not only the hub of enterprise network equipment, but also the main body of enterprise software and database applications. In practice, servers often encounter one or another failures, software or hardware. Many faults are irregular, and we can only solve them through experience. I am responsible for the maintenance of the company's servers. I encountered a strange DNS

I. Introduction to DNS ServicesDNS is the abbreviation for the computer domain Name System or domain name Service, which consists of a parser and a domain name server. A domain name server is a domain name and corresponding IP address that holds all the hosts in the network, and a server that converts the domain name to the IP address feature.Second, the

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

) Figure 6 Step 3: In the ipconfig/all display information, we can see a place where dns servers is written. This is the address of our DNS server. For example, the author is 202.106.0.20 and 202.106.46.151. It can be seen from this address that it is an Internet address. If an Internet DNS resolution error occurs, we can change the add

without a NIC? The author once again the idea of troubleshooting to focus on domain name resolution. It is well known that in a domain-enabled network, DNS-resolved domain names correspond to computers one by one, and any computer that does not retain the correct DNS counterpart name on the primary domain controller will not be able to use the

) this.width=650; "title=" DNS opens named service. jpg "src=" http://s3.51cto.com/wyfs02/M01/6B/A4/ Wkiol1uzvk7qfvznaabzazawdfa146.jpg "alt=" Wkiol1uzvk7qfvznaabzazawdfa146.jpg "/>shutting down the firewall service iptables stop 　　 and Setenforce 0　　To your own network card is set to

I have learned a lot about installing the DNS + Sendmail service and Sendmail service in Linux. I will explain how to install the DNS + Sendmail service in Linux. Detailed DNS configuration process at www.2cto.com 1. set the host

" 10.190.60.xxx ". Pay attention to the Address Sequence type master; file" named.10.190.60.zone "; // The Reverse file is located in the configuration of named.10.190.60.zone in the/var/named directory (generated later) allow-update {none ;};}; Generate the forward and reverse file required for the above Configuration Open the directory cd/var/named Generate file named.ftgov.com Configure named.ftgov.com Generate file named.10.190.60.zone Configu

directory (generated later) allow-update {none ;};}; zone "60.190.10.in-addr. arpa "IN {// anti-resolution when the input is similar to" 10.190.60.xxx ". Pay attention to the Address Sequence type master; file" named.10.190.60.zone "; // The Reverse file is located in the configuration of named.10.190.60.zone in the/var/named directory (generated later) allow-update {none ;};}; Generate the forward and reverse file required for the above Configuration Open the directory cd/var/named Generate f