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KubernetesのSecret管理~Vaultへの超入門~/Vault on Kubern...

KubernetesのSecret管理~Vaultへの超入門~/Vault on Kubernetes

2023/04/17 Kubernetes Novice Tokyo #24
KubernetesのSecret管理~Vaultへの超入門~

セッション動画
https://k8s-novice-jp.connpass.com/event/278196/
https://www.youtube.com/watch?v=yDwB42kn9gw&t=2352s

mochizuki875

April 17, 2023
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  1. 4FDSFU؅ཧ ,VCFSOFUFTͰػີ৘ใΛѻ͏γʔϯʹ͓͍ͯɺ ,VCFSOFUFTͰ͸4FDSFUϦιʔεΛ༻͍ͯ1PEʹػີ৘ใΛ౉͢͜ͱ͕Ͱ͖·͢ɻ BQJ7FSTJPOW LJOE1PE  TQFD  FOW4FDSFUͷ஋Λ؀ڥม਺ʹઃఆ OBNF64&3/"/&؀ڥม਺໊

    WBMVF'SPN TFDSFU,FZ3FG OBNFOPWJDFBQQTFDSFU4FDSFU໊ LFZVTFSOBNF OBNF1"44803%؀ڥม਺໊ WBMVF'SPN TFDSFU,FZ3FG OBNFOPWJDFBQQTFDSFU4FDSFU໊ LFZQBTTXPSE WPMVNF.PVOUT4FDSFUΛ7PMVNFͱͯ͠.PVOU OBNFDPO fi H NPVOU1BUINOUDPO fi H SFBE0OMZUSVF WPMVNFT OBNFDPO fi H TFDSFU TFDSFU/BNFOPWJDFBQQTFDSFU OPWJDFBQQZBNM OPWJDFBQQTFDSFU OPWJDFBQQ
  2. 4FDSFU؅ཧ BQJ7FSTJPOW LJOE4FDSFU NFUBEBUB OBNFOPWJDFBQQTFDSFU OBNFTQBDFOPWJDFBQQ UZQF0QBRVF EBUB QBTTXPSE6&'56E16L2Y.K./2 VTFSOBNF77/'6K&Z.[2

    Ұൠతʹ4FDSFUϦιʔε͸ҎԼͷΑ͏ͳϚχϑΣετϑΝΠϧ͔Β࡞੒ՄೳͰ͢ɻ ͔͠͠ͳ͕Β͜ΕͩͱϑΝΠϧͦͷ΋ͷʹ୭Ͱ΋σίʔυՄೳͳػີ৘ใΛهࡌ͢Δ͜ͱʹͳΓɺ ϚχϑΣετϑΝΠϧͷ؅ཧํ๏͕՝୊ͱͳΓ·͢ɻ OPWJDFBQQTFDSFUZBNM FDIPE9/MDK&Z.[2cCBTFE VTFS FDIPD('[DEWDN2Y.K./2cCBTFE QBTTXPSE ͜ͷ஋͑͞஌͍ͬͯΕ͹୭Ͱ΋σίʔυՄೳ OPWJDFBQQTFDSFU OPWJDFBQQ TFDSFUZBNM ίϨΛͲ͏؅ཧ͢Δ͔ 64&3/".&VTFS 1"44803%QBTTXPSE #BTFͰΤϯίʔυ͍ͯ͠Δ͚ͩ
  3. 7BVMU 8IBUJT7BVMU  IUUQTEFWFMPQFSIBTIJDPSQDPNWBVMU  4FDVSF TUPSF BOEUJHIUMZDPOUSPMBDDFTTUPUPLFOT QBTTXPSET DFSUJ

    fi DBUFT FODSZQUJPOLFZTGPSQSPUFDUJOHTFDSFUT  BOEPUIFSTFOTJUJWFEBUBVTJOHB6* $-* PS)551"1* <ҙ༁> ྑ͍ײ͡ʹػີ৘ใΛ؅ཧͯ͠ѻ͑Δ
  4. 7BVMUͷΠϯετʔϧ ࠓճ͸ݕূ޲͚ʹҎԼͷΑ͏ͳઃఆΛ༻͍·ͨ͠ɻ %FW4FSWFS EFWFOBCMFEUSVF ͱ͍͏ݕূ༻ͷ01΋༻ҙ͞Ε͍ͯΔͨΊ ͦͪΒΛ༻͍ͯ΋ྑ͍͔΋͠Ε·ͤΜɻ˞ະݕূ TFSWFS JOHSFTTJOHSFTTઃఆ FOBCMFEUSVF JOHSFTT$MBTT/BNFOHJOY

    IPTUT IPTUWBVMUFYBNQMFDPN QBUIT<> EBUB4UPSBHF FOBCMFEGBMTF17$࡞੒ͷແޮԽ ݕূ༻  VJ8FC6*Λ༗ޮԽ FOBCMFEUSVF DTJTFDSFUTTUPSFDTJESJWFSQSPWJEFSWBVMUΛΠϯετʔϧ FOBCMFEUSVF WBMVFTZBNM Con fi gure Vault Helm Chart https://developer.hashicorp.com/vault/tutorials/kubernetes/kubernetes-raft-deployment-guide#con fi gure-vault-helm-chart "Dev" Server Mode https://developer.hashicorp.com/vault/docs/concepts/dev-server
  5. 7BVMUͷΠϯετʔϧ Πϯετʔϧ׬ྃޙ͸7BVMU͸4FBMFEͱݺ͹ΕΔঢ়ଶ࣌ͳ͓ͬͯΓɺ جຊతʹ7BVMUͷػೳΛར༻ग़དྷͳ͍ 7BVMUʹอଘ͞Ε͍ͯΔσʔλʹΞΫηεͰ͖ͳ͍ ঢ়ଶʹ ͳ͍ͬͯ·͢ɻ LVCFDUMOWBVMUHFUQP /".&3&"%:45"5643&45"354"(& WBVMU3VOOJOHT WBVMUBHFOUJOKFDUPSECCDGI[3VOOJOHT

    WBVMUDTJQSPWJEFSI[[3VOOJOHT WBVMUDTJQSPWJEFSTTMO3VOOJOHT WBVMUDTJQSPWJEFSWKI3VOOJOHT Seal/Unseal https://developer.hashicorp.com/vault/docs/concepts/seal
  6. 7BVMUͷΠϯετʔϧ 7BVMU1PEʹFYFD͠ॳظԽίϚϯυΛ࣮ߦ͢Δ͜ͱͰҎԼͷΑ͏ʹ6OTFBM,FZͱ3PPU5PLFO ͕෷͍ग़͞Ε·͢ɻ ˞ࠓճ͸σϞ༻ʹ֤஋Λެ։͍ͯ͠·͕͢ɺ࣮ࡍ͸͜ΕΒͷ஋͸ػີ৘ใʹ֘౰͢ΔͨΊެ։͠ͳ͍Α͏ʹ͍ͯͩ͘͠͞ɻ LVCFDUMFYFDTUEJOUSVFUUZUSVFWBVMUOWBVMUWBVMUPQFSBUPSJOJU 6OTFBM,FZH %(8+46T*04NR(#"VUW/ 8"W5,8L[0JBX( 6OTFBM,FZ)250SVCINCBQ$:L,QJXYKVY*13HV:4P0Y3706 6OTFBM,FZ;KM6$U9"LW"'V16UKY89I[B[#H1L0GRS/R&-H["

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
  7. 7BVMUΛ༻͍ͨ,VCFSOFUFTͷ4FDSFU؅ཧ 7BVMUͰ؅ཧ͞Ε͍ͯΔػີ৘ใʹ,VCFSNFUFT͔ΒΞΫηε͢ΔͨΊʹɺ ԿΒ͔ͷํ๏Ͱ7BVMUଆͰೝূೝՄΛߦ͏ඞཁ͕͋Γ·͢ɻ ɹೝূ7BVMUͰ͸,VCFSOFUFTͷ4FSWJDF"DDPVOUΛ༻͍ͯೝূΛߦ͏ํ๏͕ఏڙ͞Ε͍ͯΔ ɹೝՄ7BVMUͷ3PMFɺ1PMJDZͱ͍͏࢓૊ΈΛ༻͍ͯػີ৘ใ΁ͷΞΫηεΛ੍ޚ͢Δ Kubernetes Auth Method https://developer.hashicorp.com/vault/docs/auth/kubernetes ,VCFSOFUFT

    4FSWJDF"DDPVOU 7BVMU 3PMF 1PMJDZ 4FDSFUT 4FSWJDF"DDPVOUΛ࢖ͬͯ 7BVMU্ͷػີ৘ใΛऔಘ 64&3/".&VTFS 1"44803%QBTTXPSE 4FSWJDF"DDPVOUΛ࢖ͬͯ ͱඥ෇͚ͨ3PMFΛ༻͍ͯ ػີ৘ใʹΞΫηε ػີ৘ใ΁ͷΞΫηεݖΛઃఆ ˞7BVMU͸4FSWJDF"DDPVOUΛ࢖ͬͨϦΫΤετΛड͚ͨΒɺ ɹ,VCFSOFUFT"1*ʹϦΫΤετΛߦ͍ ɹ5PLFOͷݕূΛߦ͏
  8. &YUFSOBM4FDSFU0QFSBUPSΛ༻͍Δύλʔϯ &YUFSOBM4FDSFU0QFSBUPS *OUSPEVDUJPO IUUQTFYUFSOBMTFDSFUTJPW  &YUFSOBM4FDSFUT0QFSBUPSJTB,VCFSOFUFTPQFSBUPSUIBUJOUFHSBUFTFYUFSOBMTFDSFUNBOBHFNFOUTZTUFNT MJLF"844FDSFUT.BOBHFS )BTIJ$PSQ7BVMU (PPHMF4FDSFUT.BOBHFS "[VSF,FZ7BVMU

    *#.$MPVE4FDSFUT .BOBHFS BOENBOZNPSF5IFPQFSBUPSSFBETJOGPSNBUJPOGSPNFYUFSOBM"1*TBOEBVUPNBUJDBMMZJOKFDUTUIF WBMVFTJOUPB,VCFSOFUFT4FDSFU <ҙ༁> ྑ͍ײ͡ʹ֎෦͔Βػີ৘ใΛऔಘͯ͠,VCFSOFUFTͷ4FDSFUΛ࡞Δ ҼΈʹ&YUFSOBM4FDSFU0QFSBUPS͸7BVMUҎ֎ʹ༷ʑͳ,.4ΛόοΫΤϯυͱͯ͠࢖༻Ͱ͖Δɻ IUUQTFYUFSOBMTFDSFUTJPWJOUSPEVDUJPOTUBCJMJUZTVQQPSU FYUFSOBMTFDSFUTJP IUUQTFYUFSOBMTFDSFUTJP
  9. &YUFSOBM4FDSFU0QFSBUPSΛ༻͍Δύλʔϯ ,VCFSOFUFT 7BVMU 4FDSFUT 64&3/".&VTFS 1"44803%QBTTXPSE &YUFSOBM 4FDSFU 0QFSBUPS "11

    FYUFSOBMTFDSFUZBNM ػີ৘ใΛؚ·ͳ͍ ,FZͷΈ 64&3/".& 1"44803% 4FDSFU4UPSF &YUFSOBM4FDSFU 64&3/".&VTFS 1"44803%QBTTXPSE ᶃ&YUFSOBM4FDSFUΛ࡞੒ ᶄ7BVMU΁ͷΞΫηε৘ใΛऔಘ ᶅ7BVMU͔Βػີ৘ใΛऔಘ ᶆऔಘͨ͠ػີ৘ใ͔Β4FDSFUΛ࡞੒ &YUFSOBM4FDSFU0QFSBUPSΛར༻͢Δ͜ͱͰɺػີ৘ใΛؚ·ͳ͍&YUFSOBM4FDSFUΛհͯ͠ 7BVMU্ͷػີ৘ใ͔Β4FDSFUΛ࡞੒͢Δ͜ͱ͕Ͱ͖·͢ɻ
  10. &YUFSOBM4FDSFU0QFSBUPSΛ༻͍Δύλʔϯ 4FDSFU4UPSFͰ͸ҎԼͷΑ͏ʹ7BVMUͷΤϯυϙΠϯτ΍ػີ৘ใͷ֨ೲઌɺ ೝূʹ༻͍Δ4FSWJDF"DDPVOU΍3PMFΛఆ͍ٛͯ͠·͢ɻ BQJ7FSTJPOFYUFSOBMTFDSFUTJPWCFUB LJOE4FDSFU4UPSF NFUBEBUB OBNFWBVMUCBDLFOE OBNFTQBDFOPWJDFBQQ TQFD QSPWJEFS

    WBVMU TFSWFSIUUQWBVMUWBVMU7BVMUͷΤϯυϙΠϯτ QBUIOPWJDF7BVMU্ͷػີ৘ใ֨ೲઌ 4FDSFUT&OHJOFT໊  WFSTJPOW BVUI LVCFSOFUFT NPVOU1BUILVCFSOFUFT7BVMU্ͷ"VUIFOUJDBUJPO.FUIPE໊ SPMFOPWJDFBQQ7BVMU্Ͱͷ3PMF 7BVMU্Ͱࢀর͢Δ1BUI΁ͷΞΫηεݖΛ෇༩͓ͯ͘͠  TFSWJDF"DDPVOU3FG OBNFOPWJDFWBVMUTBWBVMUͷೝূʹ༻͍Δ4FSWJDF"DDPVOU TFDSFUTUPSFWBVMULTZBNM
  11. &YUFSOBM4FDSFU0QFSBUPSΛ༻͍Δύλʔϯ 7BVMU͔Βػີ৘ใΛऔಘͯ͠4FDSFUΛ࡞੒͢ΔͨΊͷ&YUFSOBM4FDSFUΛ࡞੒ͯ͠Έ·͢ɻ BQJ7FSTJPOFYUFSOBMTFDSFUTJPWCFUB LJOE&YUFSOBM4FDSFU NFUBEBUB OBNFFYUFSOBMTFDSFUOPWJDFBQQ OBNFTQBDFOPWJDFBQQ TQFD SFGSFTI*OUFSWBMT TFDSFU4UPSF3FG

    OBNFWBVMUCBDLFOE࢖༻͢Δ4FDSFU4UPSF໊ LJOE4FDSFU4UPSF UBSHFU OBNFOPWJDFBQQTFDSFUGSPNFYUFSOBMTFDSFU࡞੒͢ΔTFDSFU໊ EBUB TFDSFU,FZVTFSOBNFTFDSFU಺ͰͷEBUB໊ SFNPUF3FG LFZBQQDPO fi HWBVMU্Ͱͷύε QSPQFSUZ64&3/".&WBVMU্ͰͷLFZ TFDSFU,FZQBTTXPSETFDSFU಺ͰͷEBUB໊ SFNPUF3FG LFZBQQDPO fi HWBVMU্Ͱͷύε QSPQFSUZ1"44803%WBVMU্ͰͷLFZ FYUFSOBMTFDSFUOPWJDFBQQZBNM ͜ͷ෦෼Ͱऔಘ͢Δػີ৘ใͷ,FZΛࢦఆ
  12. 7BVMU"HFOUΛ༻͍Δύλʔϯ 7BVMU"HFOU*OKFDUPSͱݺ͹ΕΔػೳʹΑΓɺ1PE࡞੒࣌ʹ7BVMU"HFOU͕*OJU$POUBJOFS͓Αͼ 4JEFDBS$POUBJOFSͱͯ͠ૠೖ͞Εɺػີ৘ใ͕ϑΝΠϧͱͯ͠ڞ༗ϘϦϡʔϜʹ࡞੒͞Ε·͢ɻ ,VCFSOFUFT 7BVMU 4FDSFUT 64&3/".&VTFS 1"44803%QBTTXPSE "11 ᶄ7BVMU͔Βػີ৘ใΛऔಘ

    *OJU 64&3/".&VTFS 1"44803%QBTTXPSE FNQUZ%JS .FNPSZ WBVMUBHFOUJOKFDUPS ᶃ1PEىಈ࣌ʹ*OJU$POUBJOFSͱ ɹ4JEFDBS$POUBJOFSΛૠೖ .VUBUJPO8FCIPPL ᶅڞ༗ϘϦϡʔϜʹػີ৘ใΛϑΝΠϧͱͯ֨͠ೲ 4JEFDBS
  13. 7BVMU"HFOUΛ༻͍Δύλʔϯ 7BVMU্ͷػີ৘ใΛར༻͢Δ1PEΛ࡞੒͠·͢ɻ 7BVMU"HFOUΛ༻͍ΔύλʔϯͰ͸NFUBEBUBBOOPUBUJPOT಺Ͱػີ৘ใऔಘʹؔ͢Δ ༷ʑͳ৘ใΛઃఆ͠·͢ɻ BQJ7FSTJPOW LJOE1PE NFUBEBUB OBNFOPWJDFBQQ OBNFTQBDFOPWJDFBQQ MBCFMT

    SVOOPWJDFBQQ BOOPUBUJPOT JOKFDUPSʹΑΔWBVMUBHFOUͷૠೖΛ༗ޮԽ WBVMUIBTIJDPSQDPNBHFOUJOKFDUUSVF  JOJUDPOUBJOFSͷΈ TJEFDBS͸JOKFDU͠ͳ͍  WBVMUIBTIJDPSQDPNBHFOUQSFQPQVMBUFPOMZUSVF ࢖༻͢ΔWBVMU্ͷSPMFΛࢦఆ WBVMUIBTIJDPSQDPNSPMFOPWJDFBQQ WBVMUTFDSFUT഑ԼʹBQQDPO fi HUYUͱ͍͏ϑΝΠϧ͕࡞੒͞ΕΔ WBVMUͷOPWJDFEBUBBQQDPO fi Hʹ͋Δ,7Λ࢖͏ WBVMUIBTIJDPSQDPNBHFOUJOKFDUTFDSFUBQQDPO fi HUYUOPWJDFEBUBBQQDPO fi H OPWJDFBQQZBNM ࡞੒͢ΔϑΝΠϧͷϑΥʔϚοτΛࢦఆ WBVMUIBTIJDPSQDPNBHFOUJOKFDUUFNQMBUFBQQDPO fi HUYUc \\XJUITFDSFUOPWJDFEBUBBQQDPO fi H^^ VTFSOBNF\\%BUBEBUB64&3/".&^^ QBTTXPSE\\%BUBEBUB1"44803%^^ \\FOE^^ TQFD DPOUBJOFST JNBHFVCVOUV OBNFOPWJDFBQQ DPNNBOE<CJOTI D XIJMFEPTMFFQEPOF> TFSWJDF"DDPVOU/BNFOPWJDFWBVMUTBWBVMUͷೝূʹ࢖͏ͨΊͷ4FSWJDF"DDPVOU Annotations https://developer.hashicorp.com/vault/docs/platform/k8s/injector/annotations ͜ͷ෦෼Ͱऔಘ͢Δػີ৘ใͷ,FZΛࢦఆ
  14. 7BVMU"HFOUΛ༻͍Δύλʔϯ ҎԼͷΑ͏ʹ࡞੒ͨ͠1PE಺ʹ7BVMU͔Βऔಘͨ͠ػີ৘ใΛؚΉϑΝΠϧ͕࡞੒͞Ε͍ͯΔ͜ͱ͕ ෼͔Γ·͢ɻ ·ͨɺ7BVMUଆͰػີ৘ใͷߋ৽Λߦͳͬͨ৔߹Ͱ΋ͦͷ஋͕ࣗಈ൓ө͞Ε·͢ɻ ˞4JEFDBSΛ༗ޮԽ͍ͯ͠Δ৔߹ͷΈ LVCFDUMBQQMZGOPWJDFBQQZBNM QPEOPWJDFBQQDSFBUFE LVCFDUMOOPWJDFBQQFYFDJUOPWJDFBQQDOPWJDFBQQCJOCBTI SPPU!OPWJDFBQQDBUWBVMUTFDSFUTBQQDPO fi

    HUYU VTFSOBNFVTFS QBTTXPSEQBTTXPSE ͳ͓7BVMU"HFOUΛ༻͍ΔύλʔϯͰ͸ػີ৘ใ͕ϑΝΠϧͱͯ͠௚઀ग़ྗ͞ΕΔͨΊɺ ,VCFSOFUFT্ʹ4FDSFU͸࡞੒͞Ε·ͤΜɻ ػີ৘ใΛ؀ڥม਺ʹઃఆ͍ͨ͠౳ͷ৔߹͸޻෉͕ඞཁʹͳΓ·͢ɻ &OWJSPONFOU7BSJBCMF&YBNQMF IUUQTEFWFMPQFSIBTIJDPSQDPNWBVMUEPDTQMBUGPSNLTJOKFDUPSFYBNQMFTFOWJSPONFOUWBSJBCMFFYBNQMF 1PEΛ࡞੒ 1PEʹػີ৘ใ͕౉͞Εͨ
  15. 4FDSFUT4UPSF$4*%SJWFSΛ༻͍Δύλʔϯ 4FDSFU4UPSF$4*%SJWFS͕7BVMU$4*1SPWJEFSͱ࿈ܞͯ͠7BVMU͔Βػີ৘ใΛऔಘ͠ɺ ϘϦϡʔϜͱͯ͠1PEʹϚ΢ϯτ͠·͢ɻ ,VCFSOFUFT 7BVMU 4FDSFUT 64&3/".&VTFS 1"44803%QBTTXPSE "11 ᶃ7BVMU΁ͷΞΫηε৘ใͱ

    ɹػີ৘ใͷ,FZΛఆٛ 7BVMU $4*1SPWJEFS 4FDSFU1SPWJEFS$MBTT 4FDSFU4UPSF $4*%SJWFS 64&3/".&VTFS 1"44803%QBTTXPSE 4FDSFU7PMVNF UNQGT ᶄ1SPWJEFSΛհͯ͠7BVMU͔Βػີ৘ใΛऔಘ ᶅػີ৘ใΛ7PMVNFͱͯ͠Ϛ΢ϯτ 64&3/".& 1"44803%
  16. 4FDSFUT4UPSF$4*%SJWFSΛ༻͍Δύλʔϯ 4FDSFU1SPWJEFS$MBTTͱ1PEΛ࡞੒͠·͢ɻ BQJ7FSTJPOTFDSFUTTUPSFDTJYLTJPW LJOE4FDSFU1SPWJEFS$MBTT NFUBEBUB OBNFOPWJDFBQQTQD OBNFTQBDFOPWJDFBQQ TQFD QSPWJEFSWBVMU QBSBNFUFST

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