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Init Scripts

ÀÌ ¹®¼­´Â ºÎÆ® ½ºÅ©¸³Æ®¿Í ³×Æ®¿öÅ© °ü·Ã ½ºÅ©¸³Æ®¿¡ °ü·ÃµÈ ³»¿ëÀ» OS ȤÀº ¹èÆ÷ÆÇ º°·Î Á¤¸®ÇÏ°í ÀÖ½À´Ï´Ù. Ãß°¡ÇÒ ¹èÆ÷ÆÇÀ̳ª ³»¿ëÀÌ ÀÖÀ¸¸é ÀÚÀ¯·Ó°Ô ³»¿ëÀ» Ãß°¡ÇØ Áֽðí, °íÄ¥ ºÎºÐÀÌ ÀÖÀ¸¸é ¿ª½Ã ÀÚÀ¯·Ó°Ô °íÃÄ ÁÖ¼¼¿ä. ³»¿ë Á¤¸®, Àç¹èÄ¡ ¿ª½Ã ¾ðÁ¦µçÁö ȯ¿µÇÕ´Ï´Ù.

1. Init scripts¸¦ °ü¸®ÇÏ´Â ÇÁ·Î±×·¥

¹èÆ÷ÆÇ(¿î¿µÃ¼Á¦) °ü¸® ÇÁ·Î±×·¥
RedHat /sbin/chkconfig
Debian /usr/sbin/update-rc.d
Gentoo /sbin/rc-update
FreeBSD ??

2. ºÎÆðúÁ¤

2.1. RedHat

  • "/etc/inittab"¿¡ "id:X:initdefault:"¶ó°í ¸í½ÃÇϸç "X" ºÎºÐ¿¡ ¼ýÀÚ·Î runlevelÀ» ¼±ÅÃÇÕ´Ï´Ù. ÇØ´ç runlevel ¼øÀÚ¿¡ ÇØ´çÇÏ´Â "/etc/rcX.d/SYYService" ¿¡¼­ YYÀÇ ¼ýÀÚ·Î ¸í½ÃµÈ ¼øÀ¸·Î ¼­ºñ½º¸¦ ±âµ¿ÇÏ°Ô µË´Ï´Ù.
  • "/etc/rc.d/init.d" µð·ºÅ丮 ³»¿¡ ¼­ºñ½º(Daemon)À» °ü¸®ÇÏ´Â ½©½ºÅ©¸³°¡ À§Ä¡ÇÏ¿© ÀÖÀ¸¸ç, À̵éÀÇ ½É¹ú¸¯ ¸µÅ©µéÀÌ °¢ runlevel¿¡ ½ÃÀÛ ¼ø¼­¸¦ ³ªÅ¸³¾ ¼ö ÀÖ´Â À§¿Í °°Àº º°µµÀÇ À̸§·Î À§Ä¡ÇÏ°í ÀÖ½À´Ï´Ù.

[root@ns root]# ls -l /etc/rc.d/rc3.d/S*
lrwxrwxrwx    1 root     root           17 Sep  4 04:55 /etc/rc.d/rc3.d/S10network -> ../init.d/network
lrwxrwxrwx    1 root     root           16 Sep  4 04:55 /etc/rc.d/rc3.d/S12syslog -> ../init.d/syslog
lrwxrwxrwx    1 root     root           17 Sep  4 04:55 /etc/rc.d/rc3.d/S13portmap -> ../init.d/portmap
lrwxrwxrwx    1 root     root           18 Sep  4 04:55 /etc/rc.d/rc3.d/S17keytable -> ../init.d/keytable
lrwxrwxrwx    1 root     root           16 Sep  4 04:55 /etc/rc.d/rc3.d/S20random -> ../init.d/random
lrwxrwxrwx    1 root     root           15 Sep  4 04:55 /etc/rc.d/rc3.d/S25netfs -> ../init.d/netfs
lrwxrwxrwx    1 root     root           14 Sep  4 04:55 /etc/rc.d/rc3.d/S55sshd -> ../init.d/sshd
lrwxrwxrwx    1 root     root           20 Sep  4 04:55 /etc/rc.d/rc3.d/S56rawdevices -> ../init.d/rawdevices
lrwxrwxrwx    1 root     root           16 Sep  4 04:55 /etc/rc.d/rc3.d/S56xinetd -> ../init.d/xinetd
lrwxrwxrwx    1 root     root           15 Sep  4 04:55 /etc/rc.d/rc3.d/S85httpd -> ../init.d/httpd
lrwxrwxrwx    1 root     root           15 Sep  4 04:55 /etc/rc.d/rc3.d/S90crond -> ../init.d/crond
lrwxrwxrwx    1 root     root           11 Sep  4 04:36 /etc/rc.d/rc3.d/S99local -> ../rc.local

  • /etc/rc.d/rc.localÀº /etc/rc.d/init.d¿¡ Æ÷ÇÔµÇÁö ¾ÊÀº ½ºÅ©¸³Æ®ÀÌ¸ç ºÎÆýà »ç¿ëÀÚ°¡ ¿øÇÏ´Â °£´ÜÇÑ ¸í·ÉÀ» Ãß°¡Çϱâ À§ÇÑ ¿ëµµ·Î È°¿ëµÇ°í ÀÖ½À´Ï´Ù.
  • Redhat¿¡¼­ ¼­ºñ½º(Daemon)¶ó ÇÔÀº crond, httpd, portmap, nfsd µî°ú °°Àº ¸íÈ®È÷ ÇÁ·Î¼¼½ºÀÇ ÇüÅ·Π¸Þ¸ð¸®¿¡ ³²¾Æ Áö¼ÓÀûÀ¸·Î ½ÇÇàµÇ´Â ÇÁ·Î±×·¥»Ó¸¸ ¾Æ´Ï¶ó, kudzu, random°ú °°ÀÌ ½Ã½ºÅÛ ¼³Á¤À̳ª °ü¸®¸¦ À§ÇØ ´Ü±âÀûÀ¸·Î ½ÇÇàµÇ´Â °Íµéµµ Æ÷ÇÔµÇ¸ç ¶ÇÇÑ KernelÀÇ ºÎ¼öÀûÀÎ Çϵå¿þ¾î Á¦¾î¸¦ À§ÇÑ º°µµÀÇ ±â´É(network, pcmcia, apmd)µéµµ ¿ª½Ã Æ÷ÇԵ˴ϴÙ.
  • À̵é /etc/rc.d/init.d¿¡ Æ÷ÇԵǾî ÀÖ´Â ¸ðµç ¼­ºñ½º ½ºÅ©¸³µéÀº service¶ó´Â ¸í·ÉÀ¸·Î Á¦¾î°¡ °¡´ÉÇϸç, ÀϹÝÀûÀ¸·Î´Â start, stop, restartÀÇ ¼¼°¡Áö ¸í·ÉÀ» ¼öÇàÇÕ´Ï´Ù.(kudzu¿Í °°Àº °æ¿ì´Â restart°¡ ¾ø½À´Ï´Ù.) ¼­ºñ½º¿¡ µû¶ó¼­´Â statusµî°ú °°Àº º°µµ ±â´ÉÀ» °¡Áö°í ÀÖ´Â °Íµéµµ ÀÖ½À´Ï´Ù. ÀÌµé ¸í·ÉÀÇ È®ÀÎÀº ´Ü¼øÇÏ°Ô service ¼­ºñ½º¸íÀ¸·Î Á¶È¸°¡ °¡´ÉÇÕ´Ï´Ù. Âü°í·Î restart´Â stop->startÀÇ ¿¬¼ÓÀÎ °æ¿ì°¡ ´ëºÎºÐÀÌÁö¸¸, °æ¿ì¿¡ µû¶ó¼­´Â ÇØ´ç ¼­ºñ½º°¡ °¡Áö°í Àִ ƯÀ¯ÀÇ Àç½ÇÇà ¸í·ÉÀ» ¼öÇàÇϱ⵵ ÇÕ´Ï´Ù.

[root@ns2 root]# service named status
number of zones: 15
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is OFF
server is up and running
[root@ns2 root]# service named stop
Stopping named:                                            [  OK  ]
[root@ns2 root]# service named start
Starting named:                                            [  OK  ]
[root@ns2 root]# service named restart
Stopping named:                                            [  OK  ]
Starting named:                                            [  OK  ]
[root@ns2 root]# service named reload
[root@ns2 root]# service httpd status
httpd (pid 27936 27935 27934 27933 27932 27926 27925 27924 1164) is running...
[root@ns2 root]# service httpd
Usage: httpd {start|stop|restart|condrestart|reload|status|fullstatus|graceful|help|configtest}

2.2. Debian

  • "/etc/inittab"¿¡ "id:X:initdefault:" ¶ó°í ¸í½ÃÇϸç "X" ºÎºÐ¿¡ ¼ýÀÚ·Î runlevelÀ» ¼±ÅÃÇÕ´Ï´Ù.
  • init¿¡ ÀÇÇØ Ã³À½ ½ÇÇàµÇ´Â ½ºÅ©¸³Æ®´Â /etc/init.d/rcSÀÔ´Ï´Ù. ÀÌ ½ºÅ©¸³Æ®´Â /etc/rcS.d/¿¡ ÀÖ´Â ½ºÅ©¸³Æ®¸¦ ½ÇÇàÇÕ´Ï´Ù. ÀÌ ½ºÅ©¸³Æ® ½ÇÇàÀÌ ³¡³ª¸é initdefault¿¡ ¼³Á¤ÇÑ runlevel·Î À̵¿ÇÕ´Ï´Ù.
  • DebianÀÇ ±âº» runlevelÀº 2ÀÔ´Ï´Ù. 1Àº ½Ì±ÛÀ¯Àú, 2-5´Â ¸ÖƼÀ¯Àú, 0Àº ½Ã½ºÅÛ Á¾·á, 6Àº ÀçºÎÆÃÀÔ´Ï´Ù. 2¿¡¼­ 5±îÁöÀÇ ·±·¹º§Àº ¾Æ¹«·± Â÷ÀÌ°¡ ¾øÀ¸¸ç, 3, 4, 5´Â ±âº»ÀûÀ¸·Î »ç¿ëµÇÁö ¾Ê½À´Ï´Ù. ÇÊ¿äÇϽøé 3, 4, 5 runlevelÀ» ¸¶À½´ë·Î °íÄ¡¼Å¼­ ÀÛµ¿½ÃÅ°¼Åµµ ¹®Á¦°¡ ¾ø´Ù´Â ¾ê±â°¡ µË´Ï´Ù.
  • °¢ runlevel¿¡ ¸Â°Ô /etc/rcrunlevel.d/¿¡ ½ºÅ©¸³Æ®°¡ À§Ä¡ÇÕ´Ï´Ù. ¹°·Ð ½ÇÁ¦ÀûÀÎ ½ºÅ©¸³Æ®´Â /etc/init.d¿¡ ÀÖÀ¸¸ç °¢ runlevel µð·ºÅ丮¿¡ ½Éº¼¸¯ ¸µÅ©µÇ¾î ÀÖ½À´Ï´Ù.
  • ¿¹¸¦ µé¾î ¼¾µå¸ÞÀÏ Àç½ÃÀÛÀº /etc/init.d/sendmail restart ¿Í °°ÀÌ ½ÇÇàÇÕ´Ï´Ù.

2.3. Gentoo

  • "/etc/inittab"¿¡ "id:X:initdefault:" ¶ó°í ¸í½ÃÇϸç "X" ºÎºÐ¿¡ ¼ýÀÚ·Î runlevelÀ» ¼±ÅÃÇÕ´Ï´Ù.
  • RedHat °ú´Â ´Ù¸£°Ô "/etc/runlevels"¿¡ boot, default, nonetwork, single µî ¼ýÀÚ´ë½Å¿¡ À̸§ÀÌ ºÎ¿©µÇ¾î ÀÖÀ¸¸ç À̸¦ ÅëÇؼ­ ¼­ºñ½º°¡ ±âµ¿µË´Ï´Ù.
  • ¶ÇÇÑ ÀÇÁ¸¼º°ü°è°¡ öÀúÇÑ ¸í½Ã·Î ÀÌ·ç¾îÁö¸ç ÀÇÁ¸¼º¿¡ °ü°è°¡ ¾øÀ»°æ¿ì(¸í½ÃµÇÁö ¾Ê´Â´Ù¸é) ¾ËÆĺª ¼ø¼­·Î ±âµ¿µÇ°Ô µÇ¾î ÀÖ½À´Ï´Ù. Áï, ÀÇÁ¸¼ºÀ» °Ë»çÇÏ´Â ´Ü°è°¡ ÀÖÀ¸¸ç ÀÌ¿¡ ÀÇÇؼ­ ¼ø¼­°¡ °áÁ¤µË´Ï´Ù.
  • RedHat¿¡¼­´Â ÀÌ°ÍÀ» SXX·Î ¼ýÀÚ¿¡ ÀÇÇؼ­ °­Á¦·Î ºÎ¿©µÇÁö¸¸ Gentoo¿¡¼­´Â ÀÇÁ¸¼ºÀÌ ¸í½ÃµÇ¸ç ÀÌ¿¡ ÀÇÇؼ­ Á¤È®ÇÑ ¼ø¼­°¡ ÁöÄÑÁý´Ï´Ù. init ½ºÅ©¸³Æ®´Â "/etc/init.d"¿¡ ¸í½ÃµÇ¸ç rc-update ¸í·É¿¡ ÀÇÇؼ­ "/etc/runlevels"¿¡ ¸µÅ©°¡ °É¸®°Ô µÇ¸ç init script¿¡¼­´Â °¢ runlevelÀ» boot->default ¼øÀ¸·Î scanÇÏ°Ô µË´Ï´Ù. ¶ÇÇÑ runlevel ÀÇ À̸§Àº »ç¿ëÀÚ°¡ ÀÓÀÇ·Î ¹Ù²Ü¼ö Àֱ⵵ ÇÕ´Ï´Ù.(À̶§µµ ¾ËÆĺª¼ø¼­¿¡ ÀÇÁ¸ÇÔ)
  • ÀÇÁ¸¼º¿¡ ÀÇÇÑ ½ÇÇàÀýÂ÷ÀÇ °áÁ¤Àº "/sbin/depscan.sh" script°¡ °üÀåÇϸç "rc-update"¸í·É½ÇÇà½Ã¿¡ ÀÚµ¿À¸·Î ÇÔ²² È£ÃâµÇ¹Ç·Î Ưº°ÇÑ °æ¿ì°¡ ¾ø´Ù¸é µû·Î ½ÇÇàÇÒ °æ¿ì´Â ¾ø½À´Ï´Ù. (°£È¤ »ç¿ëÀÚ°¡ script¸¦ ¼öÁ¤Çϰųª ÀÇÁ¸¼º¸í½ÃºÎºÐÀ» ¼öÁ¤ÇÏ¿´À»¶§ ½ÇÇàÇØÁà¾ß ÇÕ´Ï´Ù.)

3. ±×¿Ü ±âº» ¼³Á¤ (³×Æ®¿÷ µî)

3.1. RedHat

  • ³×Æ®¿÷ ¼³Á¤ °ü·ÃÆÄÀÏ
    • /etc/sysconfig/network
    • /etc/sysconfig/network-script/ifcfg-eth0 , ethx
    • inetd : internet super server . service daemon
    • redhat 6.x ÀÌÇÏ : /etc/inetd.conf
    • redhat 7.x ÀÌ»ó : /etc/xinetd.conf , /etc/xinetd.d (µð·ºÅ丮³» ¼³Á¤)
  • ³×Æ®¿öÅ© Àç½ÃÀÛ
  • service network restart

3.2. Debian

  • ³×Æ®¿÷ ¼³Á¤
  • dpkg-reconfigure etherconf
  • /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address 192.168.0.2
        netmask 255.255.255.0
        gateway 192.168.0.1

# dhcp´Â ´ÙÀ½°ú °°ÀÌ
auto eth0
iface eth0 inet dhcp
  
  • ³×Æ®¿öÅ© Àç½ÃÀÛ : /etc/init.d/networking restart

3.3. Gentoo

  • Network configuration
  • "/etc/conf.d/net" ¿¡ ¼³Á¤À» ÇÏ°Ô µÇ¸ç µü º¸¸é ¼³¸íÀÌ ¾ø¾îµµ ¾Ë¾Æº¼ Á¤µµ·Î ½±½À´Ï´Ù.
  • "/etc/init.d/net.eth0" µî°ú °°ÀÌ "net.XXXY" ¿Í °°Àº ½ÄÀ¸·Î °¢ NIC ¼­ºñ½º¸¦ ÆíÁýÇϰųª ¸¸µé¾î¼­ "rc-update add net.eth0 default" ·Î µî·ÏÇÕ´Ï´Ù.
  • xinetd
  • "/etc/xinetd.conf" : ¼³Á¤ÆÄÀÏ
  • "/etc/xinet.d/*" : È®ÀåµÈ ¼³Á¤ÆÄÀÏ
  • xinetd ¸¦ ±âµ¿Çϱâ À§Çؼ­´Â ´ÙÀ½°ú °°Àº ÀýÂ÷·Î ±â´ÉÀ» È°¼ºÈ­ ÇØÁÝ´Ï´Ù.
  • "rc-update add xinetd default" ·Î ºÎÆýà ½ÇÇàµÇµµ·Ï ÇÕ´Ï´Ù.
  • "/etc/xinetd.conf" ¿¡¼­ "only_from = localhost" ¶ó°í ¸í½ÃµÈ ºÎºÐÀ» ÁÖ¼®Ã³¸® ¶Ç´Â »èÁ¦ÇÕ´Ï´Ù.
  • "/etc/xinet.d" ¿¡¼­ ¿øÇÏ´Â ¼­ºñ½ºÀÇ ÆÄÀÏÀ» ¿­¾î¼­ "disable = yes" ¶ó°í µÈ ºÎºÐÀ» "disable = no" ·Î ¹Ù²ß´Ï´Ù.
  • rc script ÀÇ ¼³Á¤Àº "/etc/conf.d/rc"¸¦ ¼öÁ¤ÇÏ¿© ¼³Á¤ÇÕ´Ï´Ù.

5. Q and A


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