[B! lvs] jinjin252525ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

jinjin252525 id:jinjin252525

lvsã«é–¢ã™ã‚‹jinjin252525ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (4)

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è² è·åˆ†æ•£æŠ€è¡“-Linux Virtual Server | æŠ€è¡“æ–‡æ›¸ | æŠ€è¡“æƒ…å ± | VA Linux Systems Japanæ ªå¼ä¼šç¤¾
ã€ŒLVSã€ã¯ã€2ã¤ã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¨1ã¤ã®ã‚³ãƒžãƒ³ãƒ‰ç¾¤ã‹ã‚‰æ§‹æˆã•ã‚Œã¦ã„ã¾ã™ã€‚ ip_vs ã‚«ãƒ¼ãƒãƒ«ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ« ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ©ã‚«ãƒ¼ãƒãƒ«ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ« ipvsadmã‚³ãƒžãƒ³ãƒ‰ æä¾›ã•ã‚Œã‚‹ã‚µãƒ¼ãƒ“ã‚¹ã®ãƒãƒ¼ãƒˆç•ªå·å®›ã®ãƒ‘ã‚±ãƒƒãƒˆã‚’æ¤œå‡ºã—ã€ãã‚Œã¨å¯¾å¿œã™ã‚‹å®Ÿã‚µãƒ¼ãƒã«å¯¾ã—ã¦ã€ãƒ‘ã‚±ãƒƒãƒˆã®è»¢é€å‡¦ç†ã‚’è¡Œã„ã¾ã™ã€‚TCPã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’ã€ã‚ã‚‰ãŸã‚ã¦é–‹è¨ã™ã‚‹éš›ã®ãƒ‘ã‚±ãƒƒãƒˆï¼ˆå®Ÿã‚µãƒ¼ãƒã¨ã®å¯¾å¿œã¥ã‘ãŒã•ã‚Œã¦ã„ãªã„ãƒ‘ã‚±ãƒƒãƒˆã‚’æŒ‡ã™ï¼‰ã‚„ã€UDPãƒ‘ã‚±ãƒƒãƒˆã®å ´åˆã«ã¯ã€è»¢é€å…ˆã®å®Ÿã‚µãƒ¼ãƒã«ã¤ã„ã¦ã©ã‚Œã«ã™ã¹ãã‹ã€ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚«ãƒ¼ãƒãƒ«ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã«å•ã„åˆã‚ã›ã‚’è¡Œã£ã¦ã‹ã‚‰å‡¦ç†ã‚’ã—ã¾ã™ã€‚ ãƒ‘ã‚±ãƒƒãƒˆè»¢é€æ–¹æ³•ã«ã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ãªç¨®é¡žãŒã‚ã‚Šã¾ã™ã€‚ LVS/NAT NATã«ã‚ˆã‚Šå®›å…ˆIPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å®Ÿã‚µãƒ¼ãƒã‚¢ãƒ‰ãƒ¬ã‚¹ã«å¤‰æ›ã—ã¦è»¢é€ã™ã‚‹ ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µå®›ã«åˆ°ç€ã—ãŸãƒ‘ã‚±ãƒƒãƒˆã¯ã€å®›å…ˆIPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å®Ÿã‚µãƒ¼ãƒã®ã‚‚ã®ã«å¤‰æ›ã™ã‚‹ã“ã¨ã§å®Ÿã‚µãƒ¼ãƒã«è»¢é€ã—ã¾ã™ã€‚å®Ÿã‚µãƒ¼ãƒã‹ã‚‰ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã¸ã®å¿œç”ãƒ‘ã‚±ãƒƒãƒˆ
jinjin252525 2014/11/06
lvs
ãƒªãƒ³ã‚¯
é«˜ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã«å¯¾å¿œã§ãã‚‹Linuxãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã‚’ç›®æŒ‡ã—ã¦ ã€œ LVSã‚’NATã‹ã‚‰DSRã¸ : DSASé–‹ç™ºè€…ã®éƒ¨å±‹
ã€Œã“ã‚“ãªã«ç°¡å˜ï¼ Linuxã§ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã€ã®ã‚·ãƒªãƒ¼ã‚ºã§ã¯ã€ ã“ã‚“ãªã«ç°¡å˜ï¼ Linuxã§ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µ (1) ã€œ LVS + NATã§è² è·åˆ†æ•£ã‚’ã—ã¦ã¿ã‚ˆã† ã“ã‚“ãªã«ç°¡å˜ï¼ Linuxã§ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µ (2) ã€œ keepalivedã§Webã‚µãƒ¼ãƒã®ãƒ˜ãƒ«ã‚¹ãƒã‚§ãƒƒã‚¯ ã“ã‚“ãªã«ç°¡å˜ï¼ Linuxã§ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µ (3) ã€œ VRRPã§ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã‚’ç„¡åœæ¢ã«ã™ã‚‹ ã“ã‚“ãªæµã‚Œã§NATã«ã‚ˆã‚‹è² è·åˆ†æ•£ã‚·ã‚¹ãƒ†ãƒ ã‚’æ§‹ç¯‰ã—ã¦ãã¾ã—ãŸã€‚ ä»Šå›žã¯ã“ã‚Œã‚’ DSR(Direct Server Return) æ–¹å¼ã«å¤‰æ›´ã—ã¦ã¿ã¾ã™ã€‚ ã€ŒDSRã¨ã¯ãªã‚“ãžã‚„ï¼Ÿã€ã¨ã„ã†æ–¹ã¯ã€ ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã®é‹ç”¨.DSRã£ã¦çŸ¥ã£ã¦ã¾ã™ã‹? L4ã‚¹ã‚¤ãƒƒãƒã¯DSRæ§‹æˆã«ã™ã¹ã— ã“ã¡ã‚‰ã§ã‚ã‹ã‚Šã‚„ã™ãèª¬æ˜Žã•ã‚Œã¦ã„ã¾ã™ã®ã§å‚è€ƒã«ã—ã¦ã¿ã¦ãã ã•ã„ã€‚ ä¸€èˆ¬çš„(?)ã«å¤§è¦æ¨¡ã‚·ã‚¹ãƒ†ãƒ ã‚’æ§‹ç¯‰ã™ã‚‹å ´åˆã¯ã€ã€Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯æ©Ÿå™¨ã®æ•´å‚™ã¯ã“ã®éƒ¨é–€ã€ã€ã€Œã‚µãƒ¼ãƒã®èª¿
jinjin252525 2014/11/06
nat

lvs
ãƒªãƒ³ã‚¯
8. LVS: LVS-Tun
LVS-Tun is an LVS original. It is based on LVS-DR. The LVS code encapsulates the original packet (CIP->VIP) inside an ipip packet of DIP->RIP, which is then put into the OUTPUT chain, where it is routed to the realserver. (There is no tunl0 device on the director; ip_vs() does its own encapsulation and doesn't use the standard kernel ipip code. This possibly is the reason why PMTU on the director
jinjin252525 2014/11/06
lvs

tun
ãƒªãƒ³ã‚¯
EC2ã§keepalived+LVS(DSR)
9. å‹•ä½œç¢ºèª åŸºæœ¬æƒ…å ± â— ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ - curl â—‹ dagon - 10.0.214.215 â— keepalived+LVS â—‹ cthulhu(MASTER) - 10.0.214.216 â—‹ hastur(BACKUP) - 10.0.214.217 â— ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ - httpd â—‹ nyar - 10.0.214.218 â—‹ yog - 10.0.214.219 â— VIP â—‹ 192.168.200.16 10. å‹•ä½œç¢ºèª äº‹å‰æº–å‚™ â— LVSãƒ»ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ã®ENIã®Source/Dest Check ã‚’disabledã«ã™ã‚‹ â— ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ã§iptablesã®è¨å®š sudo iptables -t nat -A PREROUTING -d 192.168.200.16 -j REDIRECT 12. å‹•ä½œç¢ºèª - keepalived.cnf(cthulhu)
jinjin252525 2013/05/21
aws

ELB

VPC

lvs

keepalived
ãƒªãƒ³ã‚¯
1