What is the network information system?

The network information system, also known as NIS, is a client and server system based on remote calling procedures (RPC). It allows all machines in the network information system or NIS domain to share a common set of configuration files. Calling a remote procedure allows the computer program to perform a different machine in a shared network and is a form of intermediate communication. NIS has been developed by Sun Microsystems to centralize UNIX® system management and allows you to set up NIS client systems from one location with minimal configuration.

There are two sides to the network information system: servers and clients. Hosts or machines in the network can either act as a server or client. Hosts can be clients, slave servers or major servers. The main servers are authoritative name servers that process and respond to input from client servers; Slave mirror servers or make copies of output from the main servers; and client machines simplyLEE RESTORATIONS About Slave or Main Servers.

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NIS environment allows you to share many file types, but the most common types are hosts, groups and main passwords. In an environment that Neetwork, these types of files would be stored on individual computers and were not remotely accessible to multiple computers. In the NIS environment, however, these files are stored on the main server and the client computer sends a request to obtain information. As a result, one file is accessible by any number of machines or clients in the network.

When a shared network is set, a general goal is to make the network as sought after; For this reason, it is important to maintain all information about user accounts synchronized. If the data is centrally stored, users can access them from any machine in the network without having to remember passwords or physically move data from the data one machine to another. When using networkThe network administrator must maintain only one copy of the information about the information system because it is stored in one place in the network.

Since its development, the network information system has become industry and all Unix® and Unix systems such as Solaris ™, AIX®, HP-UX and Linux, support the use of network information services. NIS was originally called yellow pages or YP, but because the yellow pages of the phrase are a registered trademark, Sun Microsystems had to stop using the name. This explains why most of the Network Information System commands are the "YP" of the "YP" letters and why NIS still calls some as YP.