"84ͷ%/4 ਗ਼ਫढ़໵ ",*#"BXTୈճجૅฤ

ࣗݾ঺հ ਗ਼ਫढ़໵ʢ͠Έͣͱ͠΍ʣ wΫϥεϝιουגࣜձࣾ w"84ࣄۀ෦ wΞʔΩςΫτάϧʔϓ wಈը഑৴ΤϯδχΞͱͯ͠"84ʹ৮ΕͯΫϥεϝιου΁ wΠϯϑϥΛຊ֨తʹ৮ͬͨͷ͸"84͕͸͡Ίͯ wΦϯϓϨͷΈͷ؀ڥͱ͔͸৮ͬͨ͜ͱ͕ͳ͍

ຊηογϣϯͷςʔϚ "84ͷ%/4 w"NB[PO3PVUF wݖҖ%/4αʔϏε w"NB[PO1SPWJEFE%/4 w"NB[PO71$಺ͷ%/4αʔόʢΩϟογϡ%/4αʔόʣ w%/4αʔόΛ"84্Ͱߏஙɺӡ༻͢Δతͳ࿩͸΄΅ग़͖ͯ·ͤΜ

%/4ʹ͍ͭͯͬ͟ͱ֬ೝ %/4%PNBJO/BNF4ZTUFN wΠϯλʔωοτυϝΠϯ໊΍ϗετ໊͔Β*1ΞυϨεΛҾ͖ग़͢ ߏ੒ཁૉͷ͏ͪͷͭ wݖҖ%/4αʔό w%/4ίϯςϯπαʔόɺκʔϯαʔόͳͲͱ΋ wυϝΠϯ໊ͷ؅ཧɺΠϯλʔωοτ্Ͱ໰͍߹ΘͤʹԠ౴ w%/4αʔόʢΩϟογϡ%/4αʔόʣ wϑϧϦκϧόʔɺ%/4ΩϟογϡαʔόɺࢀরαʔόɺͳͲͱ΋ wυϝΠϯ໊ΛݕࡧɺಛఆωοτϫʔΫ಺ʹαʔϏεఏڙ

Amazon Route 53

"NB[PO3PVUF "84͕ఏڙ͢ΔݖҖ%/4αʔϏε wϑϧϚωʔδυ wߴՄ༻ੑʢ4-"ʣ w"84άϩʔόϧωοτϫʔΫΛར༻ w"OZDBTU*1ΞυϨεΛ࢖͍࠷دΓͷαʔόͰԠ౴

"NB[PO3PVUFͷػೳ wγεςϜɺαʔϏεͷެ։༻ w୅දతͳϨίʔυ͸͓͓Αͦαϙʔτ w"84ͷ&-#ɺ$MPVE'SPOUɺ4ͳͲ΁ͷΞΫηεͷυϝΠϯ༻ʹ w"84Ҏ֎ͷϦιʔεΛର৅ͱ͢Δ͜ͱ΋Մೳ w&-#ͳͲ΁ͷ;POF"QFYͷϨίʔυ௥Ճ͸"-*"4ϨίʔυͰ w಺෦ωοτϫʔΫͷΈͷ໊લղܾ wϓϥΠϕʔτ%/4ʢ1SJWBUF)PTUFE;POFʣ

"-*"4Ϩίʔυ w3PVUFͷಠ֦ࣗுϨίʔυ w%/4ΫΤϦʹରͯ͠&-#ɺ$MPVE'SPOUɺ4ͳͲͷΤϯυϙΠϯτͷ*1ΞυϨεΛ௚઀ฦ͢ w&-#ɺ$MPVE'SPOUɺ4ͳͲͰ;POF"QFYΛ࢖༻͢Δ৔߹ʹ͸ඞਢ wFYBNQMFDPNͩͬͨΒXXXFYBNQMFDPNͰ͸ͳͯ͘FYBNQMFDPNΛ&-#΍$MPVE'SPOUͳͲͰ࢖༻͢Δ৔߹ w$/".&Λ࢖͏ΑΓ΋ύϑΥʔϚϯε͕ྑ͍ w%/4ΫΤϦ͕ճͰࡁΉ w"-*"4͕࢖͑ΔͳΒ$/".&Ͱͳ͘"-*"4Λ࢖͏΂͖ wৄ͘͠͸ˠ"NB[PO3PVUFͷ"-*"4Ϩίʔυར༻ͷεεϝʛ%FWFMPQFST*0 w IUUQEFWDMBTTNFUIPEKQDMPVEBXTBNB[POSPVUFBMJBTSFDPSET

3PVUFͷ1SJWBUF%/4 71$಺෦͚ͩͰ໊લղܾ͕ՄೳͱͳΔ w)PTUFE;POF࡞੒࣌ʹ1SJWBUF)PTUFE;POFΛࢦఆ wͦͷࡍʹ࢖༻͢Δ71$΋ࢦఆ͢Δ wυϝΠϯͷऔಘ͕ෆཁ wTIJNJ[VMPDBMΈ͍ͨͳυϝΠϯͰར༻Մೳ wෳ਺ͷ71$Ͱͷ࢖༻ɺผΞΧ΢ϯτͷ71$Ͱͷ࢖༻΋Մೳ

"NB[PO3PVUFͦͷଞͷػೳ τϥϑΟοΫϧʔςΟϯά wՃॏϧʔςΟϯάɺϨΠςϯγʔϧʔςΟϯάɺҐஔ৘ใϧʔςΟ ϯάɺͳͲ %/4ϑΣΠϧΦʔόʔ w3PVUFͷػೳͱͯ͠ϔϧενΣοΫ w)FBMUIZͳΤϯυϙΠϯτͷΈ͕ΫΤϦͷԠ౴ʹؚ·ΕΔ w4Λ࢖ͬͨ4PSSZϖʔδ͕࣮ݱՄೳ

3PVUFΛ࢖͍3%4΍&MBTUJ$BDIFʹผ໊Λ͚ͭΔ w3%4΍&MBTUJ$BDIFͷΤϯυϙΠϯτ wNZFYBNQMFECBCDEXYZ[VTXFTUSETBNB[POBXTDPN ͱ͔ʢ3%4ͷྫʣ w$/".&ϨίʔυͰNZECFYBNQMFDPNʹΤϯυϙΠ ϯτͷ஋Λొ࿥ wΞϓϦέʔγϣϯଆͰ͸NZECFYBNQMFDPNʹΞΫη ε͢Δ w3%4&MBTUJ$BDIF͕ஔ͖׵ΘͬͯΤϯυϙΠϯτ͕มߋ ʹͳͬͯ΋ɺΞϓϦέʔγϣϯଆͷมߋෆཁ w1VCMJD1SJWBUF)PTUFE;POFͲͪΒͰ΋

&-#ͷεϓϦοτϏϡʔ%/4Λ࣮ݱ͢Δ w&-#ʹର໊ͯ͠લղܾΛ͢Δͱ͖ɺ71$ ಺෦ͩͬͨΒϓϥΠϕʔτ*1͕΄͍͠ w௨ৗͷ&-#ͱ͸ผʹɺJOUFSOBM&-#Λ࡞੒ w1VCMJD%/4ͰFMCFYBNQMFDPNΛ௨ৗ ͷ&-#ͱͯ͠ొ࿥ w1SJWBUF%/4Ͱ͸FMCFYBNQMDPNΛ JOUFSOBM&-#ͱͯ͠ొ࿥͢Δ w ৄ͘͠͸ˠʲ"84ʳ3PVUFͰ1VCMJD1SJWBUFಉ͡υϝΠϯ໊ͷ κʔϯΛ؅ཧ͢Δʛ%FWFMPQFST*0 w IUUQEFWDMBTTNFUIPEKQDMPVEBXTSPVUFNBOBHF TBNFEPNBJOOBNF[POFT

εϓϦοτϏϡʔ%/4Λઃఆͨ͠ࡍͷ஫ҙ఺ 71$಺෦Ͱ͸ৗʹ1SJWBUF)PTUFE;POFͰ໊લղܾ w1VCMJD)PTUFE;POFʹ͋ͬͯ1SJWBUF)PTUFE;POFʹແ͍ Ϩίʔυ͸ɺ71$಺෦Ͱ͸໊લղܾͰ͖ͳ͍ w1SJWBUF)PTUFE;POFʹ΋1VCMJDͱಉ༷ͷϨίʔυΛ௥Ճ͢ Δඞཁ͋Γ wৗʹύϒϦοΫʹղܾ͍ͨ͠υϝΠϯ໊Λ྆ํʹઃఆ͢ΔͷΛ๨Ε ͳ͍

Amazon Provided DNS

"NB[PO1SPWJEFE%/4 "NB[PO71$಺෦Ͱఏڙ͞Ε͍ͯΔ%/4Ωϟογϡαʔό wϚωʔδϝϯτίϯιʔϧͱ͔αʔϏεҰཡʹ͸ग़ͯ͜ͳ͍ w͚Ͳɺ&$Λ࢖ͬͨ͜ͱ͕͋Ε͹͖ͬͱར༻͸͍ͯ͠Δ͸ͣ wυΩϡϝϯτʹΑͬͯ͸ʮ"NB[PO%/4αʔόʔʯͳͲ wग़య৘ใ w"NB[PO7JSUVBM1SJWBUF$MPVEϢʔβʔΨΠυ wӳޠυΩϡϝϯτ΍ੲͷ#MBDL#FMU8FCJOBSࢿྉͰʮ"NB[PO1SPWJEFE%/4ʯ

"NB[PO1SPWJEFE%/4͸Ͳ͜ʹ͍Δʁ "NB[PO71$಺෦ʹ͍·͢ w71$ωοτϫʔΫൣғʹΛϓϥεͨ͠஋ wͳΒ wͳΒ wͰ΋ར༻Մೳ wʢࢀߟ&$ͷϝλσʔλऔಘ͸ʣ

"NB[PO71$ͰϢʔβ͕ར༻Ͱ͖ͳ͍*1ΞυϨε αϒωοτͷ͏ͪͭͷ*1ΞυϨε͸༧໿ࡁΈ w"NB[PO1SPWJEFE%/4ͷ*1ΞυϨε͸ৗʹ71$ωοτϫʔΫͷϕʔεʹʹͨ͠΋ͷ wαϒωοτͷ*1ϕʔεʹͨ͠΋ͷ͸໌ࣔతʹ࢖͍ͬͯͳ͍΋Α͏ ωοτϫʔΫΞυϨε 71$ϧʔλ "NB[PO1SPWJEFE%/4 কདྷͷͨΊʹ"84Ͱ༧໿ ωοτϫʔΫϒϩʔυΩϟετΞυϨεʢ71$Ͱະαϙʔτʣ

"NB[PO1SPWJEFE%/4 Կ͍ͯ͠Δʁ w71$಺ͷ&$Πϯελϯε͔Βͷ໊લղܾ w࢖༻͠ͳ͍৔߹ɺผ్%/4αʔόΛࢦఆ͠ͳ͍ͱ&$͸໊લ ղܾͰ͖ͳ͍ ࢖༻͢Δʹ͸ʁ w71$ͷʮFOBCMF%OT4VQQPSUʯΦϓγϣϯΛUSVFʹ͢Δ

"NB[PO71$ͷ%/4·ΘΓͷઃఆ %FGBVMU71$ wϗετ໊ʢύϒϦοΫ%/4͋Γʣ Ϛωʔδϝϯτίϯιʔϧ͔Β࡞੒ͨ͠71$ wϗετ໊͕ͳ͍ʁ

71$ͷ%/4ؔ࿈ͷύϥϝʔλͭ wFOBMCF%OT4VQQPSUʢ%/4ղܾʣ w71$ʹରͯ͠%/4ղܾ͕αϙʔτ͞ΕΔ͔Ͳ͏͔ wUSVFͳΒ"NB[PO%/4αʔό͕ར༻Ͱ͖Δ wFOBCMF%OT)PTUOBNFʢ%/4ϗετ໊ʣ w71$಺ʹىಈ͞ΕΔΠϯελϯε͕ύϒϦοΫ%/4ϗετ໊Λऔಘ͢Δ͔Ͳ͏͔ wUSVFͰFOBCMF%OT4VQQPSU΋USVFͳΒɺϗετ໊Λऔಘ wࢀߟυΩϡϝϯτ w"NB[PO7JSUVBM1SJWBUF$MPVEϢʔβʔΨΠυ71$ͷωοτϫʔΩϯάίϯϙʔωϯτ 71$Ͱͷ%/4ͷ࢖༻71$ͷ%/4αϙʔτ wIUUQEPDTBXTBNB[PODPNKB@KQ"NB[PO71$MBUFTU6TFS(VJEFWQDEOTIUNMWQDEOTTVQQPSU

71$࡞੒࣌ͷύϥϝʔλͷঢ়ଶ w71$ͷΈ࡞੒ͷ৔߹͸ɺॳظઃఆͰFOBCMF%OT4VQQPSUͷΈ༗ޮ wϚωʔδϝϯτίϯιʔϧɺ"84$-*ɺ4%,ͳͲ࢖༻ͷ৔߹ w%FGBVMU71$ɺ71$΢Οβʔυ࢖༻ͷ৔߹͸྆ํ༗ޮ wผ్FOBCMF%OT)PTUOBNFΛUVSFʹઃఆ͢Δ͜ͱͰύϒϦοΫ%/4ϗετ໊Λ෇༩ wҎ߱ɺຊηογϣϯͰ͸྆ํUSVFͱͨ͠৔߹ͷڍಈΛ֬ೝ

1VCMJD%/4͸௨Γͷ໊લղܾ݁Ռ 71$಺෦͔Β໊લղܾͨ͠৔߹ wϓϥΠϕʔτ*1ΞυϨε͕ฦΔ w"NB[PO%/4Λ࢖༻͍ͯ͠Δલఏ 71$֎෦͔Βͷ໊લղܾͨ͠৔߹ wύϒϦοΫ*1ΞυϨε͕ฦΔ

1VCMJD%/4ͷ໊લղܾ݁Ռͷ֬ೝ खݩͷ1$͔Βͷ໊લղܾ [shimizu.toshiya@classmethod] [~] $ nslookup ec2-13-114-175-214.ap- northeast-1.compute.amazonaws.com Server: 192.168.111.1 Address: 192.168.111.1#53 Non-authoritative answer: Name: ec2-13-114-175-214.ap-northeast-1.compute.amazonaws.com Address: 13.114.175.214

1VCMJD%/4ͷ໊લղܾ݁Ռͷ֬ೝ ಉ͡71$಺ͷҟͳΔ&$Πϯελϯε͔Β໊લղܾ [ec2-user@ip-172-31-15-12 ~]$ nslookup ec2-13-114-175-214.ap- northeast-1.compute.amazonaws.com Server: 172.31.0.2 Address: 172.31.0.2#53 Non-authoritative answer: Name: ec2-13-114-175-214.ap-northeast-1.compute.amazonaws.com Address: 172.31.23.13

௨Γͷ໊લղܾ݁Ռʹ͍ͭͯ ར఺͸ʁ w71$಺෦ͰݶఆͰ͖Δ௨৴͸71$಺෦Ͱ wΠϯλʔωοτܦ༝ʹͨ͠৔߹͸௨৴අ༻΋ൃੜ wεϓϦοτ%/4ͱͯ͠ ׆༻ͯ͠ΈΔ w1VCMJD%/4Λ$/".&Ϩίʔυͱͯ͠ొ࿥͓ͯ͘͠ͱྑͦ͞͏ wҙࣝ͢Δͷ͸ͭͷϗετ໊͚ͩͰྑ͍ w71$֎෦ͳΒύϒϦοΫ*1ɺ71$಺෦ͳΒϓϥΠϕʔτ*1 w1VCMJD%/4ʹมߋ͕͋Ε͹Ϩίʔυ಺༰Λͭॻ͖׵͑Δ͚ͩ

1VCMJD%/4໊લղܾͷ஫ҙ఺ ͋͘·Ͱಉ͡71$಺෦ͷΈϓϥΠϕʔτ*1͕ฦΔ w71$1FFSJOH઀ଓΛͯ͠΋ผ71$ͷ"NB[PO%/4αʔό͸Ԡ౴͠ͳ͍ 1FFSJOHઌ͔ΒϓϥΠϕʔτ*1Ͱ໊લղܾ͍ͨ͠৔߹͸ʁ w3PVUF1SJWBUF)PTUFE;POFΛ࡞੒ɺ71$ʹؔ࿈෇͚Δ w1VCMJD)PTUFE;POFͱ1SJWBUF)PTUFE;POFͰεϓϦοτ%/4ͱ͢Δ w1VCMJD1SJWBUF૒ํͷ)PTUFE;POFΛ؅ཧ͢Δඞཁ͋Γ

ΦϯϓϨϛε͔Β1SJWBUF)PTUFE;POFΛࢀর͍ͨ͠ 71$಺෦͔Β͔͠"NB[PO%/4͸Ԡ౴͠ͳ͍ w71$಺෦ʹ%/4ϑΥϫʔμΛߏங͢Δ w"84%JSFDUPSZ4FSWJDF 4JNQMF"% Λར༻ͨ͠ΦϯϓϨϛε͔Βͷ1SJWBUF)PTUFE ;POF໊લղܾʛ%FWFMPQFST*0 wIUUQEFWDMBTTNFUIPEKQDMPVEBXTQSJWBUFEOTGPSXBSEFSCZTJNQMFBE wΦϯϓϨϛεଆͷݖҖαʔόΛ࢖͏ɺͱ͍͏खஈ΋ w"84ϋΠϒϦουߏ੒ͷ%/4ઃܭϨγϐʛ%FWFMPQFST*0 wIUUQEFWDMBTTNFUIPEKQDMPVEBXTIZCSJEDMPVEEOTEFTJHOT wΦϯϓϨϛε࿈ܞͳͲͰ͸"NB[PO%/4αʔόΛ࢖Θͳ͍έʔε΋͋Γ͏Δ

ͦͷଞ"NB[PO%/4Λ࢖Θͳ͍৔߹ ΞΫηεઌ෼ࢄͷͨΊʹϩʔΧϧ%/4ΩϟογϡαʔόΛ࢖͏ wෛՙࢼݧπʔϧGVMMCPLͰ͸&$಺෦ͰϩʔΧϧ%/4Ωϟογϡ αʔόʢ6OCPVOEʣ͕ಈ࡞ wGVMMCPL+.FUFSΫϥελ wಉҰ71$಺ʹෳ਺ͷΫϥελ͕͍ͯ΋"NB[PO%/4αʔόͰ໊લղܾ͠ ͨ݁ՌΛڞ༗͢ΔͱΞΫηεઌ͕෼ࢄ͠ͳ͍ wΞΫηεઌ&-#΍$MPVE'SPOUͳͲ wৄࡉ͸ˠ"NB[PO&$͔ΒෛՙςετΛߦ͏ͱ͖ͷམͱ݀͠ͱର ࡦʛ%FWFMPQFST*0 wIUUQEFWDMBTTNFUIPEKQDMPVEQJUGBMMTBOETUFQTMPBEUFTUJOHPO FD

·ͱΊ "NB[PO3PVUF wϑϧϚωʔδυͳݖҖ%/4αʔϏε wγεςϜɺαʔϏεͷެ։༻ɻ"84Ϧιʔεͱͷ࿈ܞ wϓϥΠϕʔτ%/4 "NB[PO1SPWJEFE%/4 w71$಺෦ͷ໊લղܾ༻%/4Ωϟογϡαʔό w࢖༻ͷࡍ͸71$ͷͭͷύϥϝʔλΛ֬ೝ͢Δʢ%/4ղܾɺ%/4ϗετ໊ʣ wΦϯϓϨϛε࿈ܞͳͲͷ৔߹ʹ͸͋͑ͯ࢖Θͳ͍έʔε΋

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