What is NIS? What is a master and slave NIS server? Give examples of configuration files that NIS is commonly used to coordinate.
What will be an ideal response?
You can use the Network Information Service (NIS) to coordinate common configuration files, such as /etc/passwd and /etc/hosts, across several Linux computers within an organization. Each computer that participates in NIS belongs to an NIS domain and uses an NIS map for accessing certain information rather than using the local configuration file. Furthermore, you can configure an NIS master server to send all NIS map configurations to NIS slave servers, which then distribute these NIS maps to all other Linux computers, known as NIS clients. Alternatively, a master NIS server can send NIS map configuration directly to NIS clients.?The most common configuration files that companies use NIS to coordinate across multiple systems are password databases (/etc/passwd and /etc/shadow). These allow users to log in to several different Linux servers using the same user name and password.
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