Naming and Directory Services (DNS, NIS, and LDAP)

map uses a different key. For example, the names and addresses of machines arestored in two maps: hosts.byname and hosts.byaddr. When a server has amachine’s name and needs to find its address, it looks in the hosts.byname map.When it has the address and needs to find the name, it looks in the hosts.byaddrmap.An NIS Makefile is stored in the /var/yp directory of machines designated as anNIS server at installation time. Running make in that directory causes makedbm tocreate or modify the default NIS maps from the input files.Note – Always create maps on the master server, as maps created on a slave will notautomatically be pushed to the master server.Default NIS MapsA default set of NIS maps are provided in the Solaris system. You might want to useall these maps or only some of them. NIS can also use whatever maps you create oradd when you install other software products.Default maps for an NIS domain are located in each server’s /var/yp/domainnamedirectory. For example, the maps that belong to the domain test.com are located ineach server’s /var/yp/test.com directory.Table 4–3 describes the default NIS maps, information they contain, and whether thesoftware consults the corresponding administrative files when NIS is running.TABLE 4–3 NIS Map DescriptionsMap NameCorresponding NISAdmin FileDescriptionaudit_user audit_user Contains user auditing preselection data.auth_attr auth_attr Contains authorization names anddescriptions.bootparams bootparams Contains path names of files clients needduring boot: root, swap, possibly others.ethers.byaddr ethers Contains machine names and Ethernetaddresses. The Ethernet address is thekey in the map.ethers.byname ethers Same as ethers.byaddr, except thekey is machine name instead of theEthernet address.exec_attr exec_attr Contains profile execution attributes.72 System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP) • January 2005