NIS (Network Information Service)
=================================


(1)  NIS Master server
                                    
     ascii 
     files 
     aliases 
     bootparams 
     ethers 
     group 
     hosts 
     networks 
     passwd 
     protocols 
     services 

(2)  NIS client  

     mapname.dir
     mapname.pag
            
(3) ypbind and ypserv 

    - NIS client starts NIS binding daemon(/usr/etc/ypbind).

    - ypbind broadcasts to search NIS server. 

    - NIS server starts NIS server daemon(/usr/etc/ypserv).

    - ypbind looks for other server if there's no response. 
            

(4)  yppasswd and yppasswdd 

     - yppasswd 

       . /usr/etc/rpc.yppasswdd is NIS passwd daemon. 
            
(5) NIS afftected files

    - /etc/passwd 
      ------------------
      -  +::0:0::: 
      ------------------
            
      All NIS password database entries is valid at this host.
      ------------------
      - +joe: 
      ------------------

    - /etc/group 

    - /etc/aliases 

    - /etc/bootparams 

    - /etc/hosts 
            

(6) Initializing a NIS Master Server 

    - domain name
      ---------------------
      # domainname universe 
      ---------------------

    - /etc/defaultdomain         Add domain name

    - /etc/rc.local file    Add /usr/etc/rpc.yppasswdd
                                 ypxfrd startup line

    - database
      -------------------------------------------
      # mkdir /va/yp 
      # cp /usr/lib/NIS.Makefile /var/yp 
      # cd /usr/etc/yp 
      # ypinit -m 
         quit on non-fatal errors[y/n] n 
         next host to add: galaxy   /* mastername 
         next host to add: pluto     /* slavename 
         next host to add: ^D 
      -------------------------------------------

(7) Initializing a NIS Slave Server 

    - Select domainname 
      ---------------------
      # domainname universe 
      ---------------------

    - /etc/defaultdomain     Add domainname

    - /etc/rc.local          Remove # symbol ypbind

    - /var/yp directory

    - ypbind
      ------------------
      # /usr/etc/ypbind 
      ------------------ 

    -  master    database
       -----------------------------------
       # cd /usr/etc/yp 
       # ypinit -s galaxy   /* mastername 
         quit on non-fatal errors[y/n] n 
       -----------------------------------

    - NIS server daemon      Start or reboot 
      ------------------
      # fastboot 
      ------------------

(8) Initializing a NIS Client 

    -  modify domainname
       ---------------------
       # domainname universe 
       ---------------------

    - /etc/defaultdomain    add domain name

    - /etc/rc.local    ypbind

    - /var/yp directory

    - NIS binding daemon
      -----------------------
      # fastboot 
      -----------------------

(9) Updating the NIS Database 
            
    ----------------------------------------
    master# vipw    edit and update the file 
    master# cd /var/yp 
    master# make 
    ----------------------------------------

(10)  Information NIS Commands 

      - ypwhich     (Which is your NIS server)

      - ypwhich -m  (which is your master server)

      - ypwhich clientname

      - yppush      (copy master map from NIS master server to slave server)

      - ypset host  (bind specific NIS server)

      - ypcat map   (view specific NIS map file)

      - ypmatch key0 key1 map   (key value for NIS map)

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