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Kubernetes がもたらす 分散システムの脅威との戦い / v18.12 #contai...

Kubernetes がもたらす 分散システムの脅威との戦い / v18.12 #containerdaysjp

JAPAN CONTAINER DAYS V18.12

https://containerdays.jp/

Kodai Sakabe

December 04, 2018
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  1. 063(0"-4 8BOUFEMZ *OD % J T D P W F

    S $ P O O F D U & O H B H F 4 / 4 $ S F B U F  B  X P S M E  X I F S F  X P S L  E S J W F T  Q B T T J P O 4
  2. .JDSPTFSWJDFTPO,VCFSOFUFT P V S  Q S P E V

    D U  J T BU8B O U F E M Z  * O D   . J D S P T F S W J D F T  / P E F T , $ P O U B J O F S T  
  3. ΞδΣϯμ , V C F S O F U F

    T  ͕ ΋ ͨ Β ͢ ෼ ࢄ γ ε ς Ϝ ͷ ڴ Җ ͱ ͷ ઓ ͍  ,VCFSOFUFTΛ࠷େݯ׆͔ͨ͢Ίʹ૊৫શମͰར༻͢Δ  ,VCFSOFUFT͕΋ͨΒ͢૊৫ମ੍ͷมԽ  γϯϓϧ͞ΛఘΊͳ͍ɻ࠷খ୯ҐͰิ͏ # F O F G J U  ૿͑ଓ͚ΔϚΠΫϩαʔϏεͷڴҖ  ,VCFSOFUFTࣗ਎͕෼ࢄγεςϜͰ͋Δ͜ͱͷ֮ޛ  ෼ࢄίϯϐϡʔςΟϯάͷམͱ݀͠ /FUXPSL͸৴པ͠ͳ͍   1SPEVDUJPOSFBEZ $ I B M M F O H F 8
  4. #FOFGJU , V C F S O F U F

    T  Λ ࠷ େ ݯ ׆ ͔ ͨ͢ Ί ʹ ૊ ৫ શ ମ Ͱ ར ༻ ͢Δ  , V C F S O F U F T  ͕ ΋ͨ Β͢ ૊ ৫ ମ ੍ ͷ ม Խ  γ ϯ ϓϧ ͞ Λ ఘ Ί ͳ ͍ɻ ࠷ খ ୯ Ґ Ͱ ิ ͏
  5. ٕज़తஅઈΛ્ࢭ͢ΔͨΊʹɺ૊৫શମͰ ,VCFSOFUFT Λ༻͍ͯɺ େ͖ͳϚγϯϦιʔεΛશһͰڠௐͯ͠ར༻͠·͢ɻϓϩμΫτΛ௒͑ ͯ૊৫શମͰར༻͢Δ͜ͱͰɺͲ͜ʹॴଐͯ͠΋ "84 ΍ ($1 Λ࢖͏ ͷͱಉ͡Α͏ʹࣗ෼ͨͪͷϦιʔεʹରͯ͠ίϯςΩετεΠον͕গ

    ͳ͘ར༻Ͱ͖·͢ɻ͜ͷίϯςΩετεΠον͸ɺ͋·Γେ͖ͳ໰୊Ͱ ͸ͳ͍Α͏ʹײ͡·͕͢ɺ͔͜͜Βগͣͭࠩ͠෼͕ੜ·Εɺٕज़తஅ ઈ ͷ ͖ ͬ ͔ ͚ ʹ ͳ Γ · ͢ɻ ͜ ͷ ٕ ज़ త அ ઈ Λ ્ ࢭ ͢ Δ ͨ Ί ʹ ,VCFSOFUFTઐଐͰ؅ཧ͢Δ࢓૊ΈͱνʔϜମ੍͕ඞཁʹͳΓ·͢ɻ 10 ૊৫શମͰར༻ , V C F S O F U F T  Λ ࠷ େ ݯ ׆ ͔ ͢
  6. ૊৫શମͰར༻ , V C F S O F U F

    T  Λ ࠷ େ ݯ ׆ ͔ ͢ w શһͰҰͭͷେ͖ͳϚγϯΛѻ͏ w ίϯςΩετεΠονʹΑΔٕज़తஅઈΛ્ࢭ େ ͖ ͳ Ϛ γ ϯ Λ ڠ ௐ ͯ͠ ಈ ͔ ͢ w \1SPEVDUJPO 2" 4BOECPY^؀ڥ͝ͱʹΫϥελΛӡ༻ w ϚχϑΣετϑΝΠϧΛଞΫϥελͰͦͷ··֬ೝ ૊ ৫ શ ମ Ͱ ࢖ ͏ ͨ Ί ͷ Ϋ ϥελ ͷ ߏ ங w ,VCFSOFUFTͷ"ENJOνʔϜ w Ϋϥελʹ͓͚ΔJTTVFରԠɺϚχϡΞϧ੔උɺଞͷΤίγεςϜಋೖ , V C F S O F U F T  Λ ؅ ཧ ͢Δ ࢓ ૊ Έͮ ͘Γ ͱ ମ ੍ 11
  7. 12 "84($1 .POJUPSJOH -PBE#BMBODFS 44- "MFSUJOH $BQBDJUZ1MBOOJOH 6TJOH%BUBTFU 6TJOH%BUBTFU /FFE"ENJOSPMF

    4FMGPS"VUPNBUJPO %PDVNFOU $PEF 3FMFBTF 1FSGPSNBODF5VOJOH $POUJOVPVT%FMJWFSZBOE$POUJOPVT*OUFSHSBUJPO $POpH %BUBTUPSF $BDIF )PTU "84($1 .POJUPSJOH -PBE#BMBODFS 44- "MFSUJOH $BQBDJUZ1MBOOJOH %PDVNFOU $PEF 3FMFBTF 1FSGPSNBODF5VOJOH 1BSBNFUFS5VOJOH 1BSBNFUFS5VOJOH $POUJOVPVT%FMJWFSZBOE$POUJOPVT*OUFSHSBUJPO $POpH %BUBTUPSF $BDIF )PTU 8BOUFEMZ7JTJU *OTUBODFCBTF 8BOUFEMZ1FPQMF ,VCFSOFUFTCBTF $POUFYU4XJUDI #FGPSF 
  8. 13 "84($1 .POJUPSJOH -PBE#BMBODFS 44- "MFSUJOH $BQBDJUZ1MBOOJOH %PDVNFOU $PEF 3FMFBTF

    1FSGPSNBODF5VOJOH 1BSBNFUFS5VOJOH $POUJOVPVT%FMJWFSZBOE$POUJOPVT*OUFSHSBUJPO $POpH %BUBTUPSF $BDIF )PTU 6TJOH%BUBTFU "84($1 .POJUPSJOH -PBE#BMBODFS 44- "MFSUJOH $BQBDJUZ1MBOOJOH %PDVNFOU $PEF 3FMFBTF 1FSGPSNBODF5VOJOH 1BSBNFUFS5VOJOH $POUJOVPVT%FMJWFSZBOE$POUJOPVT*OUFSHSBUJPO $POpH %BUBTUPSF $BDIF )PTU 6TJOH%BUBTFU "GUFS /FFE"ENJOSPMF 4FMGPS"VUPNBUJPO 8BOUFEMZ7JTJU *OTUBODFCBTF 8BOUFEMZ1FPQMF ,VCFSOFUFTCBTF
  9. w ೥ʹ͘Β͍৽ϚΠΫϩαʔϏε͕ϩʔϯν w *'Λγϯϓϧʹ͢Ε͹͢Δ΄ͲɺࣗવͱҰͭͷ͜ͱʹूத͢Δ α ʔ Ϗε ͕ ੜ ·

    Ε ΍ ͢ ͍ w ෦෼࠷దԽ͕ϝΠϯͩͬͨ΋ͷ͕ɺશମ࠷దʹ΋໨͕ߦ͘ w Ϣʔβʔ౳ͷڞ௨৘ใɺσʔλ఻ൖͷ࢓૊ΈɺػցֶशFUD ૊ ৫ ԣ அ త ͳ ։ ൃ ͕ ߦ Θ Ε Δ w ,VCFSOFUFT͸Ͳ͏΍ͬͯ։ൃ͍ͯ͠Δʁ w LVCFSOFUFTDPNNVOJUZ ΛΧελϚΠζ 8 P S L J O H  ( S P V Q T  $ P N N J U U F F T  4 * ( T 15 IUUQTHJUIVCDPNLVCFSOFUFTDPNNVOJUZUSFFEFEEDDFEBEBGFHPWFSOBODF ૊৫ମ੍ͷมԽ , V C F S O F U F T  ͕ ΋ ͨ Β ͢
  10. 8PSLJOH(SPVQT શ ମ ࠷ ద Λ ߦ ͏  ͭ

    ͷ ՝ ୊ Λ ղ ܾ ͢Δͨ Ί ͷ ς ϯϙ ϥ Ϧ ʔ ͷ ૊ ৫ ԣ அ ϓϩ δΣ Ϋ τɻ  % F T J H O  4 Z T U F N    6 T F S T  4 F S W J D F    % B U B  Q J Q F M J O F  F U D   16 IUUQDEOIVCTQPUOFUIVCGTPMBSLKVMZ4RVBET$IBQUFST(VJMETJOPOFQBHFHSBGqFQEG
  11. w ίΞόϦϡʔΛ໌֬ʹ͢Δ w ଞͷӨڹΛड͚ͳ͍Α͏ʹ͢Δ ί Ξό Ϧϡ ʔ Λ क

    Δ w ʮ༑ୡͷ༑ୡͷ ID Λߴ଎ʹฦ͢ʯʮ໊ࢗը૾Λ៉ྷʹ͢Δʯ౳ʹಛԽ͢Δ w ಘҙͳݴޠΛར༻͢Δ ٕ ज़ ʹ ͜ ͩ Θ Δ w νʔϜن໛֦େ͢Δ෼ɺҰਓ͋ͨΓͷҙࣝ͢Δྔͷ૿ՃΛ཈͑Δ w ଞνʔϜͷґଘؔ܎͕ڧ͍΄Ͳ೉͘͠ɺௐ੔ͱશମͷ೺ѲͰେมʹͳΔ ٯ ί ϯ ΢Σ ΠΛ ى ͜ ͠ ɺ εέ ʔϧͰ ͖ Δ ૊ ৫ ʹ ͳΔ 17 8IZ.JDSPTFSWJDFT Ϛ Π Ϋ ϩ α ʔ Ϗ ε Λ ਐ Ί Δ ཧ ༝
  12. ,VCFSOFUFT ͷֶशίετ͸ߴ͍ͨΊɺඞཁͳ΋ͷΛݟۃΊֶͯशί ε τ Λ ্ ͛ͳ ͍ Α ͏

    ʹ͠ɺ ଍ Γͳ ͍ ΋ ͷ ͸ ࠷ খ ୯ Ґ Ͱ ิ ͍ · ͢ɻ ,VCFSOFUFT ಋೖ͸ɺ৽͘͠ΠϯϑϥʹϨΠϠʔΛ௥Ճ͢Δ͜ͱͰ͋ ΓɺෳࡶʹͳΓ·͢ɻ͞Βʹɺ4QJOOBLFSͷΑ͏ͳ,VCFSOFUFTʹؔ ΘΔΤίγεςϜ͸ɺಋೖ͢Δ෼ֶ͚ͩशίετ্͕͕Γ·͢ɻղܾ͠ ͍ͨ՝୊ʹରͯ͠ద੾ͳείʔϓൣғͷπʔϧ͕ͳ͍৔߹͸ɺͦΕͩ ͚Λߦ͏πʔϧ࡞੒Λݕ౼͠·͢ɻ 18 ࠷খ୯ҐͰิ͏ γ ϯ ϓ ϧ ͞ Λ ఘ Ί ͳ ͍
  13. ࠷খ୯ҐͰิ͏ γ ϯ ϓ ϧ ͞ Λ ఘ Ί ͳ

    ͍ w ࠷େͷཧ༝͸ɺݱ࣌఺ͰEFQMPZGMPX͕·ͩγϯϓϧͷͨΊ w EFWFMPQFS͔ΒΈͯLVCFDUM͸࢖͍ʹ͍ͨ͘ΊɺखΛՃ͑ͯར༻ ࿩ ୊ ʹ ͳΔ ͕ ͍ ͭ ΋ ಋ ೖ ͞ Ε ͳ ͍  4 Q J O O B L F S w $BQJTUSBOP΍)FSPLVͷ$-*͸EFWFMPQFS޲͚ͱͯ͠Θ͔Γ΍͍͢ w LVCFDUM͸ɺPQT޲͚ͷίϚϯυ͕ଟ͗͢Δ L V C F D U M  Λ গ ͠  X S B Q w 3#"$ͱ(JU)VCͷ5FBNTΛ࢖ͬͨೝՄͷ࢓૊Έ w XBOUFEMZHFONPOΛ৽نͰ࡞ͬͨ ਓ ʹ ର ͢Δ ݖ ݶ ؅ ཧ ͸ ɺ ਓ Λ ؅ ཧ ͢Δ ν ʔϜͰ ߦ ͏ ΄ ͏ ͕ γ ϯ ϓϧ 19 IUUQTTQFBLFSEFDLDPNQPUTCPHJUIVCBTBOBVUIFOUJDBUPS
  14. ྫHFONPO 8 F C I P P L  "

    V U I F O U J D B U J P O ( J U ) V C  ͷ  5F B N T  ͸ ί ʔ ϙ Ϩ ʔ τ ʹ ͯ ؅ ཧ ͞ Εͯ ͍ Δɻ ೋ ॏ ؅ ཧ Λ ͞ ͚Δͨ Ί ʹ  ( J U ) V C  ͷ  5F B N T  Λ ࢖ ͬͯ  , V C F S O F U F T  ͷ ૢ ࡞ Λ ߦ ͏ Α ͏ ʹ ͨ͠ Β ద ੾ ʹ ݖ ݶ ؅ ཧ Ͱ ͖ Δ ͷ Ͱ ͸ ʁ ͱ ͍ ͏ γ ϯϓϧ ͳ ΞΠ σΟ Ξ ͔ Β ੜ · Ε ͨ ɻ 20 IUUQTTQFBLFSEFDLDPNQPUTCPHJUIVCBTBOBVUIFOUJDBUPS
  15. $IBMMFOHF ૿ ͑ ଓ ͚ΔϚΠΫ ϩ α ʔ Ϗε ͷ

    ڴ Җ  , V C F S O F U F T  ࣗ ମ ͕ ෼ ࢄ γεςϜͰ͋ Δ ͜ ͱ ͷ ֮ ޛ  ෼ ࢄ ί ϯ ϐϡ ʔ ςΟ ϯ άͷ མ ͱ ͠ ݀ / F U X P S L  Λ ৴ པ ͠ ͳ ͍  1 S P E V D U J P O  S F B E Z
  16. ૿͑ଓ͚ΔϚΠΫϩαʔϏεͷڴҖ w "1. MPH ΩϟύγςΟϓϥϯχϯά &YDFQUJPO/PUJGJDBUJPO ࢮ׆؂ࢹ w DSPTTDVUUJOHBTQFDUTͳ΋ͷΛڞ௨ϥΠϒϥϦͱͯ͠֎ग़͠ w

    'BVMU*TPMBUJPOରࡦ͕ൈ͚͕ͪʹͳΔ w 5IVOEFSJOH)FSE ΍Χεέʔυো֐ʹͳΒͳ͍Α͏ʹରࡦ΋ඞཁɻ ' B V M U  * T P M B U J P O w Ұ؏ੑ͋Δσʔλͱج൫ͷҡ࣋͸೉͍͠ w /FUXPSL %BUBTUPSF σʔλͷ఻ൖ 1VC4VCϝοηʔδϯά Ұ ؏ ੑ ͷ ೉ ͠ ͞ͱ ৽ ͨ ͳ ٕ ज़ ෼ ໺ 23 IUUQMBCTDZCP[VDPKQCMPHLB[VIPBSDIJWFTDBDIF@BOE@UIVOEFSJOH@IFSEQIQ
  17. w QPEͷUFSNJOBUJOH࣌ʹΞΫηε͕དྷ͍ͯΔ໰୊ w TFSWJDF੾Γ཭͠ॲཧͱUFSNJOBUFॲཧ͸ඇಉظͰ͋Δ ඇ ಉ ظ Ͱ͋ Δ ͜

    ͱ w WͰNBTUFSͷ࠶ىಈ࣌ʹෳ਺ͷ/PEF͕ಥવ/PU3FBEZ ʹͳΔ w 'JYFEWWW Ϋ ϥελ ͷ  / P E F  ͕  / P U  3 F B E Z  ʹ ͳ Γɺ  1 P E  ͕ Ұ ੪ ࠶ ى ಈ w ͜ͷଞʹHFUBEESJOGP΍DPOOFDUJPOSFGVTFE౳ w Ұ෦ͷQPEͰ͋ΔಛఆͷϦΫΤετ͕ःஅ ઐ ೚ ʹ ۙ ͍ ܗ Ͱ ௐ ࠪ ͢Δ ਓ ͕ ͍ ͳ ͍ ͱ ͳ ͔ ͳ ͔ ӡ ༻ ͯ͠ ͍ ͘ ͷ ͸ ೉ ͠ ͍ 25 Kubernetes ࣗମ͕෼ࢄγεςϜͰ͋Δ͜ͱͷ֮ޛ IUUQTHJUIVCDPNLVCFSOFUFTLVCFSOFUFTJTTVFT
  18.  3FQMJDBUJPO$POUSPMMFSEFMFUFTQPE  1PEJTNBSLFEBT5FSNJOBUJOH  ,VCFMFUPCTFSWFTUIBUDIBOHFBOETFOET4*(5&3.  &OEQPJOU DPOUSPMMFS PCTFSWFT

    UIF DIBOHF BOE SFNPWFT UIF QPE GSPNɹ&OEQPJOUT  ,VCFQSPYZPCTFSWFTUIF&OEQPJOUTDIBOHFBOEVQEBUFTJQUBCMFT  1PESFDFJWFT4*(,*--BGUFSHSBDFQFSJPE ͱ͸ฒྻ࣮ߦɻOHJOYͳͲͰ4*(5&3.Ͱࡴͯ͠Δ࠷தʹ৽نSFRVFTU͕ དྷΔ͜ͱ͕͋Γɺͦͷࡍʹ&-#·ͨ͸($-#͕ΤϥʔΛฦͯ͠͠·͏ɻ 26 Pod ͷ Terminate ͱ Service ੾Γ཭͠ͷඇಉظ IUUQTHJUIVCDPNLVCFSOFUFTDPOUSJCJTTVFTJTTVFDPNNFOU
  19. 27 Pod ͷ Terminate ͱ Service ੾Γ཭͠ͷඇಉظ IUUQTHJUIVCDPNLVCFSOFUFTJOHSFTTOHJOYJTTVFTJTTVFDPNNFOU MJGFDZDMF QSF4UPQ

    FYFD DPNNBOE<lTMFFQ lz>1SF4UPQΛॆ෼௕ͯ͘͠4FSWJDF͔Β੾Γ཭͞ΕΔͷΛ଴ͭ ·ͨ͸%PDLFSpMFʹ45014*(/"-ΛࢦఆɻOHJOY͸A4*(26*5A͕HSBDFGVMTIVUEPXO 1PE5FSNJOBUF UJNF 1SFTUPQIPPL 1SFTUPQ 4*(5&3.IPPL 4*(5&3. 4*(,*-- UFSNJOBUJPO(SBDF1FSJPE4FDPOET DPOOFDUJPOT SFRVFTUT
  20. ϚΠΫϩαʔϏε͕૿͑ΔதͰɺҰఆͷׂ߹ͰωοτϫʔΫʹىҼ͢Δ Τϥʔ͕ࢄݟ͞Εɺ෼ࢄίϯϐϡʔςΟϯάͷམͱ݀͠ʹֻ͔ࠩͬͯ͠ ͍Δ͜ͱʹؾ෇͖·͢ɻ0CTFSWBCJMJUZ ͱ 'BVMU 5PMFSBOU Λ޲্ ͢ Δ ඞ

    ཁ ͕ ͋ Γ · ͢ɻ ͜ ͷ ໰ ୊ Λ ࠜ ຊ త ʹ ର ॲ ͢ Δ ͨ Ί ʹ ͸ ɺ 0CTFSWBCJMJUZ %JTUSJCVUFE USBDJOH  4FSWJDF NBQ  'BVMU 5PMFSBOU $JSDVJU CSFBLFST  )FBMUI DIFDLT  3FUSJFT5JNFPVUT  $POUSPMDPOOFDUJPOQPPMTJ[FBOESFRVFTUMPBE ͷ࢓૊Έ͕ඞཁ ʹͳΓ·͢ɻ 28 ωοτϫʔΫΛ৴པ͠ͳ͍ ෼ ࢄ ί ϯ ϐ ϡ ʔ ς Ο ϯ ά ͷ མ ͱ ͠ ݀
  21. w αʔϏεؒͷσόοάʹ෼ࢄτϨʔγϯάͱߏ଄తͳϩάऔಘ w ৴པੑΛ্͛ΔϥΠϒϥϦɾϛυϧ΢ΣΞΛ࢖ͬͯ#J[MPHJDʹूத % F C V H H

    B C J M J U Z  B O E  4 J N Q M J D J U Z  w ωοτϫʔΫՄࢹԽ w 'BVMU5PMFSBOUʹ͢ΔͨΊͷ3FUSZͱ5JNFPVUͱ$JSDVJU#SFBLFS 0 C T F S W B C J M J U Z  B O E  ' B V M U  5P M F S B O U w ίΞόϦϡʔͷґଘؔ܎Λ஌Δ w SFRVFTUJE͔ΒྲྀΕΛ஌Δ % J T U S J C V U F E  5S B D J O H  B O E  4 F S W J D F  N B Q 29 ωοτϫʔΫΛ৴པ͠ͳ͍ ෼ ࢄ ί ϯ ϐ ϡ ʔ ς Ο ϯ ά ͷ མ ͱ ͠ ݀ IUUQTXXXTMJEFTIBSFOFUQDBMDBEPEFCVHHJOHNJDSPTFSWJDFT
  22. /FYU(FOFSBUJPOPG.JDSPTFSWJDFT 31 #60:"/5 MJOLFSE։ൃ ͷ$50͕͞ΒʹਐΜͩ.JDSPTFSWJDFTͱͯ͠4FSWJDF.FTIΛఏএ #J[MPHJD "MFSUJOH 31$$PEF 3FUSZ -JCSBSZ

    1MBUGPSN %FWFMPQNFOU $MJFOUTJEF4FSWJDF%JTDPWFSZ 5FMFNFUSZ 3BUFMJNJU "VUIPSJ[BUJPO %JTUSJCVUFETUBUF $JSDVJU#SFBLFS #J[MPHJD "MFSUJOH 31$$PEF 3FUSZ $MJFOUTJEF4FSWJDF%JTDPWFSZ 5FMFNFUSZ 3BUFMJNJU "VUIPSJ[BUJPO %JTUSJCVUFETUBUF $JSDVJU#SFBLFS #J[MPHJD "MFSUJOH 31$$PEF 3FUSZ $MJFOUTJEF4FSWJDF%JTDPWFSZ 5FMFNFUSZ 3BUFMJNJU "VUIPSJ[BUJPO %JTUSJCVUFETUBUF $JSDVJU#SFBLFS "QQMJDBUJPO4UBDL 6TJOH-JCSBSZ 6TJOH-JCSBSZBOE4JEFDBSQSPYZ ৴པੑͷͨΊʹ௥Ճͨ͠ίʔυ ந৅Խͯ͠ϥΠϒϥϦΛڞ༗ TJEFDBSQSPYZ   IUUQQIJMDBMDBEPDPNQBUUFSO@TFSWJDF@NFTIIUNM
  23. 8F$IBUNJDSPTFSWJDFT 0 W F S M P B E 

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  24. %JTUSJCVUFE5SBDJOH Ϧ Ϋ Τ ε τ ͷ ྲྀ Ε Λ

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