dns configuration problem

The concept of SCAN (Single Client Access Name) is introduced in the Oracle 11g RAC cluster, that is, the Single Client Access Name of the cluster. SCAN provides a single host name for the client to access the Oracle database running in the cluster. If you add or delete nodes in a cluster, you do not need to change the TNS configuration of the client that uses SCAN. No matter which nodes are contained in the cluster, SCAN resources and their associate

The concept of SCAN (Single Client Access Name) is introduced in the Oracle 11g RAC cluster, that is, the Single Client Access Name of the cluster. SCAN provides a single host name for the client to access the Oracle database running in the cluster. If you add or delete nodes in a cluster, you do not need to change the TNS configuration of the client that uses SCAN. No matter which nodes are contained in the cluster, SCAN resources and their associate

Accidentally saw an article about Nodejs sending an HTTP request does not cache DNS results. This means that if you write an HTTP capture program based on Nodejs, not providing DNS caching will allow each request to be silly repeatedly resolved domain name for IP address. It's going to sound very influential, isn't it? In my project, sending an HTTP request is not a node native HTTP library for use, but re

Domain Name Server saves the regional files of the specified domain.3. Slave Domain Name ServerObtain the corresponding files from the primary domain server and save them. Step 1: Check whether Bind and caching-nameserver software packages are installed.Rpm-qa | grep bindRpm-qa | grep cachingBind is the installation package of DNS, and caching-nameserver is the configuration template of

DNS service configuration is successful-Linux Enterprise Application-Linux server application information. For details, refer to the following section. (Letter/author) since learning "Linux service configuration" in advance from the last semester, the most time I spent was the configuration of the

Tags: des os io ar for art CTI Log SPThis article provides the basic DNS configuration steps necessary for use of the single Client Access Name (SCAN) introduced I n Oracle 11g Release 2 RAC. Consider the following caveats before following the instructions here:I ' m not a network guy and don ' t claim to know much about DNS.The article only discusses the use of BIND as the

problem, establish a DNS cache server in the local area network, the resolution request of each PC can be cached, when the resolution request of the PC in the LAN, there is cache record in the cache server, the resolution request of the PC will go directly to the record of the cache server to find the resolution target.The cache server listens for external addressesFind the following in/etcc/named.confList

.el6_4.6.x86_64.rpm//install BIND main package[[email protected] packages]# RPM-IVH bind-chroot-9.8.2-0.17.rc1.el6_4.6.x86_64.rpm//install chroot package; provide a disguise root directory for bind[Email protected] packages]# Rpm-qa | After grep "^bind"//installation is complete, determine that the following four packages are already present in the systemBind-libs-9.8.2-0.17.rc1.el6_4.6.x86_64Bind-9.8.2-0.17.rc1.el6_4.6.x86_64Bind-chroot-9.8.2-0.17.rc1.el6_4.6.x86_64Bind-utils-9.8.2-0.17.rc1.el6

The production environment of Hadoop cluster installation and configuration + DNS + NFS environment LinuxISO: CentOS-6.0-i386-bin-DVD.iso32 bit JDKversion: 1.6.0 _ 25-eaforlinuxHad .. The production environment of Hadoop cluster installation and configuration + DNS + NFS environment LinuxISO: CentOS-6.0-i386-bin-DVD.is

Many platform platform provides cloud parsing function, the so-called cloud parsing is a DNS server, in general, after the domain name provider buys a domain name, will specify an NS record, for example, in the domain name provider buys the domain name miner-k.com. You need to set up a cloud resolution record. The value of the NS record points to the domain name address provided by cloud resolution (ns1.alidns.com, ns2.alidns.com) There are two common

Scenario: The day before the virtual machine in the configuration of the centos6.3, you can normally surf the internet, and the FTP server to build up, today a boot this goods unexpectedly can not surf the internet, depressed .... Problem: The following figure: Can ping the IP address, but the domain name Ping pass ... Resolution process: STEP1) A preliminary assessment of

a link file, so directly to the past to modify the source file on the line)Add in the first line: nameserver 192.268.1.113 Here the entire DNS configuration is complete;7. Test it:记得首先的重启下bind9Shell Knockservice bind9 restartThis time can be measured with tools such as host/dig/nslookup (usually comes with):Host: Dig: Nslookup: 8. If unable to test pass or restart bind, it is likely because the

in all DNS area. When a new zone is created, the resource record is created automatically. 3. Host address a(Adress): The resource record and hostname are mapped to an IP address in the DNS zone . 4. pointer ptr (point): The resource record is paired with the host record to map the IP address to the DNS reverse zone down host name. 5. Mail Exchanger resource rec

resource record. DNS Client (resolution program): It queries searches from the server and resolves the name to the resource record type specified in the query. Iii. DNS server type Cache DNS server: it does not contain domain name database files. It returns the query results obtained from the Domain Name Server to the client each time and cac

DNS simple configuration under Linux1. Install the DNS package. Mount Redhat disc image, I believe everyone will, into the CD mount point, find the following several packages, with RPM or Yum installation, here is not much to do introduction. bind-9.3.4-10.p1.el5 (master installation file for DNS)Bind-chroot-9.3.4-10.p

How to solve the loss problem after Centos modifies DNS restart or restarts the network serviceRead directory introduction cause processing GitHub introduction when we configure Centos, we need to be able to connect to the Internet in many cases, so we need the DNS resolution function. By default, DNS information is no

New Win7 users reflect, Win7 DNS problems, do not know how to solve. So the small series specially for everyone to edit an article about "Win7 DNS problems how to do?" The article: The reason for the problem with computer DNS is as follows: DNS problems occur because of th

I. DNS (Domain Name Server) DNS is a domain name resolution service. The service types include: high-speed cache DNS service, primary domain service, and secondary domain service. Port Number: 53. The root domain name is.. top-level domain names include cn kr us gov com net edu and so on. The package for installing DNS

caused by overload of the carrier server. In this case, we need to bypass the peak hours and perform download operations such as BT during low hours.6. In addition, a major cause of computer failure to Ping DNS is related to the system. We recommend that you perform full anti-virus processing on the system or install the operating system, this plays an important role in improving DNS access. You can also u

RHEL5 is added on the basis of RHEL4. The system is also perfect, and RHEL5 has been applied to many people. Therefore, RHEL5 is required to be more powerful in configuration, the service configuration mainly involves the RHEL5 DNS configuration, so the following describes how to configure