This service always starts from server A first
That is used to communicate the domain with the desired service. This service can be a network printer or even a game server. For example, when an application needs to find the location of a particular service, it searches for the corresponding SRV record. If it finds the desired record, it retrieves the list of services and hostnames connected to it to find: Hostname Ports Priority and Weight IP Addresses, if relevant An SRV record is an advanced type of DNS record that allows you to provide specific services. This method describes how a specific domain interacts with a specific Internet service such as FTP or SIP. The SRV record specifies a host and port for specific services such as voice over IP (VoIP), instant messenger, etc.Most DNS records only specify a server or an IP address, but an SRV record includes a port phone numbers list along with the IP. Some Internet protocols require the use of SRV records. On a network, ports are virtual locations that specify where to route processing network traffic on a computer. Ports allow computers to easily distinguish between different types of traffic. For example: VoIP streams go to a different port than email messages (go to a separate port from emails), for example, even if both access the computer through the same Internet connection, the situation will be the same. Was. Just like IP addresses, all ports are assigned a number. In addition to connecting to a specific server, certain Internet protocols such as IMAP, SIP, and XMPP must also connect to a specific port. In general, the SRV record is responsible for specifying (displaying) a port in DNS. By using the SRV record, it is possible to determine the priority of access to the servers. With values such as weight and priority, administrators can use multiple servers for the same domain, so if the main server fails, other servers are also available. What is the difference between weight and priority? If several different SRV records are defined for a service, priority can be used to specify which record should be checked first. But if two SRV records have the same priority. Any record with a higher weight has a higher priority. The main difference between weight and priority is that priority is checked first.
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If there are three servers , server A, server B and server C, if they have priorities of 10, 20 and 30, their "weight" is not important. This service always starts from server A first. But suppose servers A, B, and C all have a priority of 10, how can the service choose between them? Here weight becomes an important factor: if server A has a weight of 5 and servers B and C have weights of 3 and 2, then server A receives the most traffic, server B the second most. The amount of traffic and server C is ranked last to receive traffic. What is in an SRV record? An SRV record contains the following information. Here, example values are listed for each field. picture (1) In general, the structure of an SRV record is as follows: To create an SRV record in cPanel, after entering the hosting panels, go to the Zone Editor section from the Domains collection and then select the SRV record as shown in the image below. Image(2) Image(3) Complete the available fields according to the image (3). 1. Name: Enter your desired domain name in this section and insert a period at the end. 2. TTL: Enter 14400 in the TTL field. 3. Type: Select SRV Record option in this field.
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