2.11. Ŭ·¯½ºÅÍ ¼³Á¤ °Ë»çÇϱâ

Ŭ·¯½ºÅÍ ¼ÒÇÁÆ®¿þ¾î°¡ Á¦´ë·Î ¼³Á¤µÇ¾ú´ÂÁö È®ÀÎÇϱâ À§ÇØ /usr/sbin µð·ºÅ丮¿¡ À§Ä¡ÇÑ ´ÙÀ½°ú °°Àº µµ±¸¸¦ »ç¿ëÇϽʽÿÀ:

´ÙÀ½ ºÎºÐ¿¡¼­´Â Ŭ·¯½ºÅÍ À¯Æ¿¸®Æ¼¿¡ ´ëÇÏ¿© º¸´Ù ÀÚ¼¼ÇÏ°Ô ¼³¸íÇϰí ÀÖ½À´Ï´Ù.

2.11.1. °øÀ¯ ÆÄƼ¼Ç °Ë»çÇϱâ

°øÀ¯ ÆÄƼ¼ÇÀº ¸ðµç ±¸¼º¿ø¿¡¼­ µ¿ÀÏÇÑ ¹°¸®Àû ÀåÄ¡¸¦ Áö½ÃÇØ¾ß ÇÕ´Ï´Ù. /usr/sbin/shutil À¯Æ¿¸®Æ¼¸¦ -v ¿É¼Ç°ú ÇÔ²² »ç¿ëÇÏ¿© °øÀ¯ ÆÄƼ¼ÇÀ» °Ë»çÇÏ°í »ç¿ë °¡´ÉÇÑÁö È®ÀÎÇØ º¸½Ê½Ã¿À.

¸¸ÀÏ ¸í·ÉÀÌ ¼º°øÀûÀ̸é, ¸ðµç ±¸¼º¿ø »ó¿¡¼­ /usr/sbin/shutil -p /cluster/header ¸í·ÉÀ» ÀÔ·ÂÇÏ¿© °øÀ¯ ÆÄƼ¼Ç¿¡ ´ëÇÑ Çì´õ µ¥ÀÌÅÍ ±¸Á¶ÀÇ ¿ä¾àÀ» º¼ ¼ö ÀÖ½À´Ï´Ù. ±¸¼º¿ø¸¶´Ù Ãâ·Â °á°ú°¡ ´Ù¸¦ °æ¿ì, °øÀ¯ ÆÄƼ¼ÇÀº ¸ðµç ±¸¼º¿ø¿¡¼­ µ¿ÀÏÇÑ ÀåÄ¡¸¦ Áö½ÃÇϰí ÀÖÁö ¾Ê´Ù´Â °ÍÀ» ³ªÅ¸³À´Ï´Ù. /etc/sysconfig/rawdevices ÆÄÀÏ¿¡¼­ ¿øÀåÄ¡°¡ ÀÖ´ÂÁö, ±×¸®°í ¿Ã¹Ù¸£°Ô ÁöÁ¤µÇ¾ú´ÂÁö È®ÀÎÇØ º¸½Ê½Ã¿À. ÀÚ¼¼ÇÑ Á¤º¸´Â 1.4.4.3 ÀýÀ» ÂüÁ¶ÇϽñ⠹ٶø´Ï´Ù.

´ÙÀ½ ¿¹½Ã´Â /usr/sbin/shutil -p /cluster/header ¸í·ÉÀ» »ç¿ëÇÏ¿© °øÀ¯ ÆÄƼ¼ÇÀÌ clu1.example.com°ú clu2.example.com Ŭ·¯½ºÅÍ ±¸¼º¿ø¿¡¼­ µ¿ÀÏÇÑ ¹°¸® ÀåÄ¡¸¦ Áö½ÃÇÏ´Â °ÍÀ» º¸¿©ÁÝ´Ï´Ù:

/cluster/header is 140 bytes long
SharedStateHeader {
        ss_magic = 0x39119fcd
        ss_timestamp = 0x000000003ecbc215 (14:14:45 May 21 2003)
        ss_updateHost = clu1.example.com

/usr/sbin/shutil -p /cluster/header ¸í·ÉÀ» ÀÔ·Â ÈÄ Ãâ·ÂµÈ °á°ú´Â ¸ðµç Ŭ·¯½ºÅÍ ±¸¼º¿ø¿¡¼­ µ¿ÀÏÇØ¾ß ÇÕ´Ï´Ù. ¸ðµç ±¸¼º¿ø¿¡¼­ Ãâ·Â °á°ú°¡ µ¿ÀÏÇÏÁö ¾ÊÀ» °æ¿ì, ´ÙÀ½À» ¼öÇàÇϽʽÿÀ:

¾Õ¼­ ¼³¸íµÈ ÀÛ¾÷µéÀ» ¼öÇàÇϽŠÈÄ, /usr/sbin/shutil À¯Æ¿¸®Æ¼¸¦ -p ¿É¼Ç°ú ÇÔ²² ´Ù½Ã ½ÇÇàÇϽñ⠹ٶø´Ï´Ù.

2.11.2. Àü¿ø ½ºÀ§Ä¡ °Ë»çÇϱâ

¸¸ÀÏ Å¬·¯½ºÅÍ Çϵå¿þ¾î ¼³Á¤¿¡, ³×Æ®¿öÅ© ¿¬°á ȤÀº Á÷·Ä ¿¬°á Àü¿ø ½ºÀ§Ä¡°¡ »ç¿ëµÇ¾ú´Ù¸é, Ŭ·¯½ºÅÍ ¼ÒÇÁÆ®¿þ¾î¸¦ ¼³Ä¡ÇÑ ÈÄ, clufence ¸í·ÉÀ» ½ÇÇàÇÏ¿© Àü¿ø ½ºÀ§Ä¡¸¦ °Ë»çÇϽʽÿÀ. ÀÌ ¸í·ÉÀ» °¢ ±¸¼º¿ø¿¡¼­ ½ÇÇàÇÏ¿© ´Ù¸¥ ±¸¼º¿øÀ» ¿ø°ÝÀûÀ¸·Î Àü¿ø »çÀÌŬ °¡´ÉÇÑÁöµµ È®ÀÎÇØ ÁֽʽÿÀ. °Ë»ç°¡ ¼º°øÀûÀ̸é, Ŭ·¯½ºÅ͸¦ ½ÃÀÛÇÒ ¼ö ÀÖ½À´Ï´Ù.

clufence ¸í·ÉÀº Ŭ·¯½ºÅÍ ¼ÒÇÁÆ®¿þ¾î°¡ ½ÇÇà ÁßÀÌÁö ¾ÊÀ» ¶§¿¡¸¸ Á¤È®ÇÏ°Ô Àü¿ø ½ºÀ§Ä¡¸¦ °Ë»çÇÒ ¼ö ÀÖ½À´Ï´Ù. ±× ÀÌÀ¯´Â Á÷·Ä ¿¬°áµÈ ½ºÀ§Ä¡´Â ¿ÀÁ÷ Çѹø¿¡ ÇÑ ÇÁ·Î±×·¥ ¸¸ÀÌ Àü¿ø ½ºÀ§Ä¡¿Í ±¸¼º¿øÀ» ¿¬°áÇÏ´Â Á÷·Ä Æ÷Æ®¸¦ »ç¿ëÇÒ ¼ö Àֱ⠶§¹®ÀÔ´Ï´Ù. clufence ¸í·ÉÀÌ ÀԷµǸé, Ŭ·¯½ºÅÍ ¼ÒÇÁÆ®¿þ¾îÀÇ »óŸ¦ È®ÀÎÇÕ´Ï´Ù. ¸¸ÀÏ Å¬·¯½ºÅÍ ¼ÒÇÁÆ®¿þ¾î°¡ ½ÇÇà ÁßÀ̶ó¸é, ¸í·ÉÀº Ŭ·¯½ºÅÍ ¼ÒÇÁÆ®¿þ¾î¸¦ Á¤ÁöÇϵµ·Ï ¿äûÇÏ´Â ¸Þ½ÃÁö¸¦ º¸³»¸ç Á¾·áÇÕ´Ï´Ù.

clufence ¸í·ÉÇà ¿É¼ÇµéÀº ´ÙÀ½°ú °°½À´Ï´Ù:

Àü¿ø ½ºÀ§Ä¡¸¦ °Ë»çÇϱâ À§ÇÑ Ã¹ ´Ü°è´Â °¢ Ŭ·¯½ºÅÍ ±¸¼º¿øÀÌ ¿¬°áµÈ Àü¿ø ½ºÀ§Ä¡¿Í Á¦´ë·Î Åë½ÅÇÒ ¼ö ÀÖ´ÂÁö È®ÀÎÇÏ´Â °ÍÀÔ´Ï´Ù. ´ÙÀ½ clufence ¸í·ÉÀÇ Ãâ·Â °á°ú´Â Ŭ·¯½ºÅÍ ±¸¼º¿øÀÌ ÀÚ½ÅÀÇ Àü¿ø ½ºÀ§Ä¡°¡ Åë½ÅÇÒ ¼ö ÀÖÀ½À» º¸¿©ÁÝ´Ï´Ù:

[27734] info: STONITH: rps10 at /dev/ttyS0, port 0 controls clumember1.example.com
[27734] info: STONITH: rps10 at /dev/ttyS0, port 1 controls clumember2.example.com

clufence °á°ú¿¡ ¿À·ù°¡ ¹ß»ýÇÒ °æ¿ì, ´ÙÀ½À» È®ÀÎÇØ º¸½Ê½Ã¿À:

½ºÀ§Ä¡¿Í Åë½ÅÇÒ ¼ö ÀÖ´ÂÁö ¿©ºÎ¸¦ È®ÀÎÇϽŠÈÄ, ´Ù¸¥ Ŭ·¯½ºÅÍ ±¸¼º¿ø¿¡ Àü¿ø »çÀÌŬÀ» ½ÃµµÇغ¸½Ê½Ã¿À. ±× Àü¿¡ ´Ù¸¥ Ŭ·¯½ºÅÍ ±¸¼º¿ø¿¡ Áß¿äÇÑ ÀÛ¾÷À» ¼öÇà ÁßÀÎÁö (¿¹, Ȱ¼º Ŭ¶óÀÌ¾ðÆ®¿¡ Ŭ·¯½ºÅÍ ¼­ºñ½º¸¦ Á¦°øÇϰí ÀÖ´ÂÁö)¸¦ ¸ÕÀú È®ÀÎÇØ º¸½Ê½Ã¿À. clufence -f clumember2.example.com ¸í·ÉÀ» ÀÔ·ÂÇϽøé Á¾·á ÀÛ¾÷°ú fencing ÀÛ¾÷ (½Ã½ºÅÛÀÌ unfenced µÉ¶§±îÁö Àü¿ø ½ºÀ§Ä¡·ÎºÎÅÍ Àü¿øÀ» °ø±Þ¹ÞÁö ¾Ê´Â °ÍÀ» ÀǹÌÇÕ´Ï´Ù)À» ¼º°øÀûÀ¸·Î Á¾·á ÈÄ ´ÙÀ½°ú °°Àº °á°ú¸¦ Ãâ·ÂÇÕ´Ï´Ù:

[7397] info: STONITH: rps10 at /dev/ttyS0, port 0 controls clumember1.example.com
[7397] info: STONITH: rps10 at /dev/ttyS0, port 1 controls clumember2.example.com
[7397] notice: STONITH: clumember2.example.com has been fenced!

2.11.3. Ŭ·¯½ºÅÍ ¼ÒÇÁÆ®¿þ¾î ¹öÀü º¸±â

¸ðµç Ŭ·¯½ºÅÍ ±¸¼º¿ø¿¡¼­ µ¿ÀÏÇÑ ¹öÀüÀÇ Red Hat Ŭ·¯½ºÅÍ °ü¸®ÀÚ ¼ÒÇÁÆ®¿þ¾î°¡ ½ÇÇà ÁßÀÎÁö È®ÀÎÇØ ÁֽʽÿÀ.

Ŭ·¯½ºÅÍ ¼³Á¤ µµ±¸¿Í Ŭ·¯½ºÅÍ »óÅ µµ±¸ÀÇ ¹öÀüÀ» º¸½Ã·Á¸é, ´ÙÀ½ Áß ÇѰ¡Áö ¸í·ÉÀ» »ç¿ëÇÏ½Ã¸é µË´Ï´Ù: