Unix/Solaris °ü·Ã°Ô½ÃÆÇ

2000/07/19(19:55) from 203.254.154.69
ÀÛ¼ºÀÚ : °­ÁÙ±â (jkkang65@hanmail.net) Á¶È¸¼ö : 1863 , ÁÙ¼ö : 80
Secondary DNS Server
1. ¼³Á¤
 
  Primary nameserver name : sun.jic.co.kr
  Primary nameserver IP address : 203.239.175.1

  Secondary nameserver name : blue.jic.co.kr
  Secondary nameserver IP address : 203.239.175.2

2. /etc/named.boot File

  blue¿¡¼­ /etc/named.boot fileÀ»¸¦ ´ÙÀ½°ú °°ÀÌ ¼³Á¤ÇÑ´Ù.

;named.boot file for the jic.co.kr domain
;on the host www sun octopus
directory                                               /etc/domain
cache      .                                            root.cache
primary    0.0.127.in-addr.arpa                         0.0.127.in-addr.arpa
secondary  jic.co.kr                 203.239.175.1     jic.co.kr
secondary  75.239.203.in-addr.arpa    203.239.175.1     175.239.203.in-addr.arpa
 

"directory"´Â DNS µ¥ÀÌÅÍ ÆÄÀÏÀÌ ÀúÀåµÇ´Â Àå¼ÒÀÌ´Ù.
À̵ð·ºÅ丮´Â ¸¸µé¾î ÁÖ¾î¾ßÇÑ´Ù.

"cache" Å°¿öµå´Â root DNS ServerÀÇ IP address¿Í À̸§À» in.named daemon¿¡°Ô ¾Ë·Á ÁØ´Ù. /domain/root.ccache´Â prmary nameserver¿¡¼­ »ç¿ëÇÏ´ø °Í°ú µ¿ÀÏ ÇÑ °ÍÀÌ´Ù. ÀÌÈ­ÀÏÀº primary nameserver¿¡¼­ down ¹Þ´Â´Ù.

"primary" Å°¿öµå´Â loopback address domainÀÌ 0.0.127.in-addr.arpa ÆÄÀÏ¿¡ ÀÖ´Ù´Â °ÍÀ» in.nameddaemon¿¡°Ô ¾Ë·ÁÁØ´Ù. ÀÌ°ÍÀº primary nameserver¿¡ ÀÖ´Â °Í°ú µ¿ ÇÑ °ÍÀÌ´Ù. ÀÌÈ­ÀÏÀº primary nameserver¿¡¼­ down ¹Þ´Â´Ù.

"secondary" Å°¿öµå´Â µÎ ¹ø° Çʵ忡 ÀÖ´Â µµ¸ÞÀο¡ ´ëÇؼ­ secondary nameserver¶ó´Â °ÍÀ» ¾Ë·ÁÁØ´Ù. ¸¶Áö¸· µÎ¶óÀÎÀÇ ¼¼ ¹ø° Çʵ忡 ÀÖ´Â IP adress´Â primary nameserverÀÇ IP adressÀÌ´Ù.
in.named daemonÀº  ÀÚµ¿À¸·Î primary nameserver¿¡¼­ À̵µ¸ÞÀο¡´ëÇÑ µ¥ÀÌÅ͸¦ ³»·Á¹Þ´Â´Ù. ¸¶Áö¸· ³× ¹ø° Çʵ忡 ¸í½ÃµÈ ÆÄÀÏÀº primary nameserver·ÎºÎÅÍ °¡Á®¿Í¼­ ÀÚµ¿À¸·Î »ý¼ºÇÑ´Ù. ÀÌÈ­ÀÏÀº "direstory" Å°¿öµå¿¡ Á¤ÀÇµÈ directory¿¡ »ý¼ºµÈ´Ù.

3. Test

     /etc/resolv.conf file¿¡ ´ÙÀ½°ú°°À̵î·Ï

domain jic.co.kr
nameserver 203.239.175.1
nameserver 203.239.175.2

    /etc/nsswitch.conf
#
# /etc/nsswitch.files:
#
# An example file that could be copied over to /etc/nsswitch.conf; it
# does not use any naming service.
#
# "hosts:" and "services:" in this file are used only if the
# /etc/netconfig file has a "-" for nametoaddr_libs of "inet" transports.

passwd:     files
group:      files
hosts:      files dns
networks:   files
protocols:  files
rpc:        files
ethers:     files
netmasks:   files
bootparams: files
publickey:  files
# At present there isn't a 'files' backend for netgroup;  the system will
#   figure it out pretty quickly, and won't use netgroups at all.
netgroup:   files
automount:  files
aliases:    files
services:   files
sendmailvars:   files
 
 

     primary nameserver¿¡¼­ in.named daemonÀ» kill½ÃŲÈÄ ¿ÜºÎ µµ¸ÞÀÎ ³×ÀÓÀÌ pingÀÌ µÇ´ÂÁö È®ÀÎÇÑ´Ù.
ex)
sun#  ps -ef | grep in.named
     root   119     1  0 19:22:08 ?        0:00 /usr/sbin/in.named
sun#  kill -9 119
blue# ping mit.edu
     mit.edu is alive
 
 

´ë»ó O/S : solaris

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