ÇѱÛÁ¦¸ñ(Korean Title) |
Áß¼ÒÇü »çÀÌÆ®¸¦ À§ÇÑ ´Ù¼öÀÇ Àü¸é ¼¹ö¸¦ °®´Â °í°¡¿ë¼º À¥ ¼¹ö Ŭ·¯½ºÅÍ |
¿µ¹®Á¦¸ñ(English Title) |
High-Availability Web Server Cluster Employing Multiple Front-Ends for Small and Middle-sized Web Sites |
ÀúÀÚ(Author) |
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¿ø¹®¼ö·Ïó(Citation) |
VOL 11-A NO. 05 PP. 0355 ~ 0364 (2004. 10) |
Çѱ۳»¿ë (Korean Abstract) |
ÀÎÅͳÝÀÌ »õ·Î¿î »ê¾÷ÀÇ ÇüÅ·Π¹ßÀüÇÏ¸é¼ À¥ »çÀÌÆ®¿¡ Ŭ·¯½ºÅ͸µ ±â¼úÀ» ¸¹ÀÌ Àû¿ëÇÏ°í ÀÖ´Ù. °í¼º´É Çϵå¿þ¾î ½ºÀ§Ä¡¸¦ »ç¿ëÇÏ¸é ¼º´ÉÀÌ ¿ì¼öÇÏÁö¸¸ Áß¼ÒÇü »çÀÌÆ®¸¦ ±¸¼ºÇÏ´Â µ¥¿¡´Â ºñ¿ë ºÎ´ãÀÌ ¸¹ÀÌ µÈ´Ù. ÃÖ±Ù¿¡´Â ¹«·áÀÌ¸é¼ ¼º´ÉÀÌ ¶Ù¾î³ ¸®´ª½º °¡»ó ¼¹ö(Linux Virtual Server)¸¦ ÀÌ¿ëÇÑ Å¬·¯½ºÅ͸¦ ¸¹ÀÌ ±¸ÃàÇÏ°í ÀÖ´Ù. ±×·¯³ª ¸®´ª½º °¡»ó ¼¹ö´Â ÇϳªÀÇ Àü¸é¼¹ö¸¦ °¡Áö´Â Áß¾ÓÁýÁᫎ ºÎÇÏºÐ¹è ±¸Á¶À̹ǷΠ»ç¿ëÀÚ ¿äûÀÇ ±Þ°ÝÇÑ Áõ°¡·Î º´¸ñÇö»óÀ» ÀÏÀ¸Å³ ¼ö ÀÖ´Ù. µû¶ó¼ º» ³í¹®¿¡¼´Â ´Ù¼öÀÇ Àü¸é¼¹ö¸¦ µÎ¾î ¸®´ª½º °¡»ó ¼¹öÀÇ º´¸ñÇö»óÀ» ¾ø¾Ö´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ¸ðµç Ŭ·¯½ºÅÍ ³ëµåµéÀº Àü¸é¼¹ö¿Í Èĸ鼹öÀÇ ¿ªÇÒÀ» ¸ðµÎ ÇÒ ¼ö ÀÖµµ·Ï ±¸¼ºÇÑ´Ù. ¼¹öÀÇ ºÎÇÏ°¡ ¸¹Áö ¾ÊÀ¸¸é Àڱ⠳ëµå¿¡¼ Á÷Á¢ ó¸®ÇÏ¿© »ç¿ëÀÚ¿¡°Ô ÀÀ´äÇÒ ¼ö ÀÖµµ·Ï ÇÏ°í, ºÎÇÏ°¡ ¸¹Àº °æ¿ì ºÎÇÏ°¡ °¡Àå ÀÛÀº ³ëµå¸¦ ¼±ÅÃÇÏ¿© »ç¿ëÀÚ ¿äûÀ» Àü´ÞÇÑ´Ù. ±×¸®°í Ŭ·¯½ºÅÍ ¼¹öµéÀÇ ºÎÇϸ¦ °í·ÁÇÑ ½ºÄÉÁÙ¸µ ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÏ¿© ¼¹öµé »çÀÌÀÇ ºÎÇϸ¦ °í¸£°Ô ÇÑ´Ù. ½ÇÇè°á°ú ±âÁ¸ À¥ ¼¹ö Ŭ·¯½ºÅ͵éÀº ¼¹öÀÇ ¼ö°¡ Áõ°¡ÇÏ¸é¼ ¼º´ÉÇâ»ó ÆøÀÌ °¨¼ÒÇÏÁö¸¸, º» ³í¹®¿¡¼ Á¦¾ÈÇÑ À¥ ¼¹ö Ŭ·¯½ºÅÍ´Â ¼±ÇüÀûÀ¸·Î Áõ°¡ÇÏ´Â °ÍÀ» º¸¿´´Ù. ¸®´ª½º °¡»ó ¼¹ö ȯ°æ¿¡¼ ´Ù¼öÀÇ Àü¸é¼¹ö¸¦ ±¸¼ºÇÔÀ¸·Î½á º´¸ñÇö»óÀ» ¾ø¾Ö°í, ºñ¿ë ºÎ´ãÀÌ ¾ø°í °í¼º´ÉÀÇ Áß¼ÒÇü »çÀÌÆ®¸¦ ±¸ÃàÇÒ ¼ö ÀÖ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
These days, various clustering technologies have been adopted to construct web sites. High performance hardware switches have good performance, but have disadvantage of high cost for constructing small and middle-sized web sites. Now a days, many sites have been constructed with the LVS (Linux Virtual Server), which is free of charge and has good performance. Having a centralized load balancing with one front-end, the LVS causes a bottleneck when it receives all at once. In the paper, we suggest a way to remove the LVS bottleneck by providing multiple front-ends. In this architecture, all of cluster nodes act as both a front-end and a back-end. When the load of a node receiving requests is not large enough, the node responds to the client directly. When the load of a node is large enough, the node send the request to a node which is selected by a scheduling algorithm. The scheduling algorithm is discussed to balance loads between servers. While single front-end cluster raises the throughput curvedly, the multiple front-end cluster raises the throughput linearly., |
Å°¿öµå(Keyword) |
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High Availability
Ŭ·¯½ºÅÍ
Cluster
½ºÄÉÁÙ¸µ
Scheduling
¸®´ª½º °¡»ó ¼¹ö
Linux Virtual Server
ºÎÇϺйè
Load Balancing
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