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変化するDNS運用とこれからの課題について(DNS設計/運用者の目線から)
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LINEヤフーTech (LY Corporation Tech)
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January 19, 2024
Technology
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変化するDNS運用とこれからの課題について(DNS設計/運用者の目線から)
JANOG53での登壇資料です。
https://www.janog.gr.jp/meeting/janog53/dnsops/
LINEヤフーTech (LY Corporation Tech)
PRO
January 19, 2024
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Transcript
-:$PSQPSBUJPO -*/&Ϡϑʔגࣜձࣾ 4JUF0QFSBUJPOຊ෦ ଠా ݈ มԽ͢Δ%/4ӡ༻ͱ ͜Ε͔Βͷ՝ʹ͍ͭͯ %/4ઃܭӡ༻ऀͷઢ͔Β چϠϑʔͷ߹
-:$PSQPSBUJPO ଠా ݈ • چϠϑʔʹ৽ଔೖࣾ ଐҎདྷσʔληϯλͷ --εΠονͷߏஙɾӡ༻Λ୲ • ݄͔Β
%/4ͷӡ༻୲ ࣗݾհ
-:$PSQPSBUJPO +"/0(ൃදͷৼΓฦΓ ͜Ε·ͰͷมԽ Ϧκϧόݮ σϓϩΠίετͷݮ • αʔόҰ͋ͨΓͷΩϟύγςΟ ϓϥϯχϯά࠶ݕ౼ •
ߏཧπʔϧʹΑΔ DPOGJH ࣗಈ • SFTPMWDPOG ࣗಈ ࢿྉIUUQTXXXKBOPHHSKQNFFUJOHKBOPHEOTDPTU
-:$PSQPSBUJPO αʔόͷنײ ͜Ε·ͰͷৼΓฦΓ ౦ຊຊͦΕͧΕ • ཧαʔό • 7.
• Ϧκϧό ˞ओཁڌͷΈ
-:$PSQPSBUJPO αʔόͷنײ ͜Ε·ͰͷৼΓฦΓ ౦ຊຊͦΕͧΕ • ཧαʔό • 7.
• Ϧκϧό ˞ओཁڌͷΈ ϐʔΫ࣌ΑΓݮ͍ͬͯΔ͕ ґવϦκϧό͕ଟ͍
-:$PSQPSBUJPO ΫΤϦϩάͷऔಘ͕ϘτϧωοΫͱͳ͍ͬͯΔՄೳੑ +"/0(ͷٞΑΓ ͳͥϦκϧό͕ଟ͍ͷ͔ ϩάऔಘͷత औಘ༰ • ࣌ࠁ •
TPVSDF*1BEESFTT • ROBNF RUZQF ͳͲ ϩάͷྔ • Ϧκϧό ͋ͨΓ ฏۉ .#ZUFTT ηΩϡϦςΟࠪͷ؍ • %$ͷαʔό͕ ͲͷΑ͏ͳ໊લղܾ ΫΤϦΛग़͔ͨ͠
-:$PSQPSBUJPO Φϓγϣϯͱͯ͠ͲͷΑ͏ͳͷ͕͔͋ͬͨ ύϑΥʔϚϯεͷվળख๏ -JOVYLFSOFM QBSBNFUFS %/4࣮ͷઃఆௐ UNQGT ͷ༻ EOTUBQ
ͷಋೖ
-:$PSQPSBUJPO Φϓγϣϯͱͯ͠ͲͷΑ͏ͳͷ͕͔͋ͬͨ ύϑΥʔϚϯεͷվળख๏ -JOVYLFSOFM QBSBNFUFS %/4࣮ͷઃఆௐ UNQGT ͷ༻ EOTUBQ
ͷಋೖ ઃఆௐɾUNQGT ༏ҐͳࠩΈΒΕͣ EOTUBQ EJTL*0ݮޮՌ͕ݟࠐ·ΕͨͨΊ ͦͪΒΛݕ౼
-:$PSQPSBUJPO %/4ιϑτΣΞʹ͓͚ΔΫΤϦϩά ग़ྗϑΥʔϚοτͷҰͭ • ରԠ͍ͯ͠Δ %/4࣮Ͱಉ͡ ߏԽ͞Εͨग़ྗ͕ಘΒΕΔ • %/4XPSLFSUISFBEͱ EOTUBQ
*0UISFBE͕͍ͯ͠ΔͨΊ ϩάग़ྗͷύϑΥʔϚϯεվળ͕ ظͰ͖Δ EOTUBQͱ ग़యIUUQTEOTUBQJOGPTMJEFTEOTUBQ@WMETTQEG
-:$PSQPSBUJPO %/4࣮ଆͷΫΤϦϩάग़ྗػೳΛΦϑʹ͠ɺEOTUBQ ܦ༝Ͱϩάग़ྗ ֓ཁ EOTUBQ ߏ %/4RVFSZ EOTUBQ SFDFJWFS
DMJFOUT SFTPMWFS MPHGJMF VOJY TPDLFU
-:$PSQPSBUJPO ग़ྗ͞ΕΔϩάͷܗࣜ SFDFJWFSʹΑΓҟͳΔ • ॊೈੑͷ؍͔Β HPEOTDPMMFDUPS Λ࠾༻ SFDFJWFS࣮ͷݕ౼ EOTUBQ
ߏ global: text-format: "timestamp-rfc3339ns identity queryip queryport family protocol qname qtype" 2023-12-19T12:29:01.277695051Z dnstap_id 192.0.2.1 12345 IPv4 UDP example.jp A IUUQTHJUIVCDPNENBDIBSEHPEOTDPMMFDUPSCMPCNBJOEPDTDPOGJHVSBUJPONEDVTUPNUFYUGPSNBU HPEOTDPMMFDUPS DPOGJH ΫΤϦϩά
-:$PSQPSBUJPO HPEOTDPMMFDUPS αϯϓϧίϯϑΟά EOTUBQ ߏ multiplexer: collectors: - name:
tap dnstap: sock-path: "/path/to/unix.sock" loggers: - name: file logfile: text-format: "timestamp-rfc3339ns identity queryip queryport qname qtype" file-path: "/path/to/query.log" max-size: 600 max-files: 6 mode: text routes: - from: - tap to: - file • ZBNM ܗࣜͰهड़ • NVMUJQMFYFSͰෳͷ DPMMFDUPST MPHHFST SPVUFTΛఆٛՄೳ • DPMMFDUPSϩάऩूํ๏Λઃఆ • MPHHFSTهํ๏ϝτϦΫε ͷग़ྗΛઃఆ • SPVUFTDPMMFDUPSͱ MPHHFSͷ ରԠΛઃఆ
-:$PSQPSBUJPO ΫϥΠΞϯτɾϦκϧόͱʹಉҰੑೳ ͷαʔόΛ༻͠ɺҎԼͷ݅Ͱൺֱ ܭଌڥͱ݅ ϕϯνϚʔΫ DMJFOUT EOTQFSG GVMMSFTPMWFS #*/%
RVFSZ ߲ εϖοΫ $16 *OUFM9FPO&-W ()[Y$16 $5 .FNPSZ (# %/4TPGUXBSF #*/% CFODINBSL EOTQFSG ߲ ݅ ΫΤϦϩάऔಘํ๏ औಘͳ͠ #*/%ඪ४ HPEOTDPMMFDUPS Ωϟογϡώοτ
-:$PSQPSBUJPO ܭଌ݁Ռ ϕϯνϚʔΫ #*/%ඪ४ͱൺֱͯ͠ RQT ੑೳ͕ ʙഒఔ্͍ͯ͠Δ͜ͱ Λ֬ೝ
RQT Ωϟογϡώοτ RQT ܭଌ݁Ռ #*/%ଐ EOTUBQ ϩάऔಘͳ͠
-:$PSQPSBUJPO ϕϯνϚʔΫ݁Ռ͔ΒΩϟύγςΟϓϥϯχϯά ݮඪ ߟྀ ҎԼͷ͔Β֤Ϋϥελ࠷ Λઃఆ • োൃੜ࣌ͷॖୀ •
େنࡂ࣌ͷ #$1 ੑೳ ར༻ঢ়گ͔ΒΩϟογϡώοτ Ͱࢼࢉ • ROBNF ͷ΄ͱΜͲ͕͚ࣾ ͷυϝΠϯ໊
-:$PSQPSBUJPO ϕϯνϚʔΫ݁Ռ͔ΒΩϟύγςΟϓϥϯχϯά ݮඪ ߟྀ ҎԼͷ͔Β֤Ϋϥελ࠷ Λઃఆ • োൃੜ࣌ͷॖୀ •
େنࡂ࣌ͷ #$1 ੑೳ ར༻ঢ়گ͔ΒΩϟογϡώοτ Ͱࢼࢉ • ROBNF ͷ΄ͱΜͲ͕͚ࣾ ͷυϝΠϯ໊ ͜ΕΒΛߟྀͯ͠Ҏ্ ݮՄೳͰ͋Δ͜ͱ͕໌
-:$PSQPSBUJPO ৽͘͠ඪ४Խ͞ΕΔϨίʔυػೳͷରԠ • धཁརศੑɾඞཁੑͷ΄͔ɺಋೖʹΑΔӨڹɾӡ༻ίετͳͲ༷ʑͳ ؍Ͱݕ౼্ͨ͠ͰରԠ͢Δඞཁ͕͋Δ • ྫ)5514Ϩίʔυɺ9'3PWFS5-4ͳͲ ͜Ε͔Βͷ՝
-:$PSQPSBUJPO ·ͱΊ ͜Ε·ͰͷมԽ ݱࡏͷऔΓΈ EOTUBQ ಋೖʹΑΔ͞Β ͳΔϦκϧόݮ • ΫΤϦϩάऔಘ͕
ϘτϧωοΫ • EOTUBQ ʹΑΓ RQT ੑೳ͕େ෯վળ ͜Ε͔Βͷ՝ • ৽͘͠ඪ४Խ͞ΕΔ Ϩίʔυػೳͷ ରԠ ҎԼΛத৺ʹऔΓΈ • Ϧκϧόݮ • σϓϩΠίετݮ
-:$PSQPSBUJPO 19