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ControlPlane のいない Kubernetes クラスタを作る

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Avatar for Kentaro Kentaro
September 02, 2025
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ControlPlane のいない Kubernetes クラスタを作る

Kubernetes 上に ControlPlane の各コンポーネントを載せ、kubeadm で join させることにより、ControlPlane をマネージドにしたお話です

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Kentaro

September 02, 2025
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  1. w ϕΞϝλϧͷ,VCFSOFUFT্Ͱ0QFO4UBDLΛ ߏங w PQFOTUBDLIFMNΛ࢖͏ͱɺ֤छίϯϙʔ ωϯτΛָΊʹσϓϩΠͰ͖Δ w ୆Λ$/ʹׂΓ౰ͯ w ͦͷ্ʹɺ$MVTUFS"1*Ͱ,VCFSOFUFTΫϥε

    λΛߏங w ଞʹɺ71/༻ͷ7.΍.JOFDSBGUαʔό ʔ͕Քಇ w ෺ཧճઢ͸ࣗ୐ͱڞ༗ͭͭ͠΋ɺ-"/͸ಠཱ ࣗ୐αʔόʔͷ͝঺հ
  2. ऍᷟʹઆ๏Ͱ͕͢ɾɾɾ w $POUSPM1MBOFʹ͸ҎԼͷΑ͏ͳίϯϙʔ ωϯτ͕৐Δ w LVCFBQJTFSWFS w FUDE w LVCFTDIFEVMFS

    w DPOUSPMMFSNBOBHFS w ݴ͏·Ͱ΋ͳ͘ ͍ͣΕ΋ඞਢίϯϙʔω ϯτͰ͋Γɺͳ͍ͱΫϥελ͕੒Γཱͨͳ ͍ Ұൠతʹ IUUQTLVCFSOFUFTJPEPDTDPODFQUTPWFSWJFXDPNQPOFOUTΑΓ
  3. w (,&ͳͲͰ࡞੒ͨ͠ΫϥελͰk get node͠ ͨࡍɺ$POUSPM1MBOFΛSPMFʹ࣋ͭϊʔυ͕͍ͳ ͍ w (,&Ͱ͸ɺ(PPHMF͕$POUSPM1MBOFͷίϯϙʔ ωϯτΛ؅ཧ͢Δ w

    ͳͷͰɺϢʔβʔͷϓϩδΣΫτ͔Β͸ݟ͑ͳ ͍ w ҎԼͷ௨৴͕Ͱ͖Ε͹ɺϊʔυͷଘࡏࣗମ͸໰Θ Εͳͦ͞͏ w "1*4FSWFS ↔︎ LVCFMFU w ֤छίϯϙʔωϯτˠ"1*4FSWFS ҰํͰ IUUQTDMPVEHPPHMFDPNLVCFSOFUFTFOHJOFEPDTDPODFQUTDMVTUFSBSDIJUFDUVSF IMKBΑΓ
  4. ߏ੒ํ਑ w $POUSPM1MBOFʹ͍Δ΂͖ίϯϙʔωϯτ͕ಈ͘ઐ༻ͷΫϥελΛ࡞੒ w Ϋϥελ͝ͱʹҎԼͷίϯϙʔωϯτΛσϓϩΠ w FUDE w LVCFBQJTFSWFS w

    LVCFTDIFEVMFS w DPOUSPMMFSNBOBHFS w 8PSLFS/PEF͔Βkubeadm joinͰ͖ΔΑ͏ʹ͢Δ w $MVTUFS"1*1SPWJEFSԽ͢Δͱ͖ʹɺͳΔ΂͘$"#1,Λྲྀ༻͍ͨ͠
  5. w DFSUNBOBHFSͰඞཁͳূ໌ॻ Λ࡞Δ w ,VCFSOFUFT$" w FUDE$" w GSPOUQSPYZ$" w

    ,VCFSOFUFTUIF)BSEXBZ΍ ,VCFSOFUFT%PDT΋ࢀߟʹ ূ໌ॻΛ࡞Δ IUUQTLVCFSOFUFTJPKBEPDTTFUVQCFTUQSBDUJDFTDFSUJ fi DBUFTΑΓ
  6. FUDE w 4UBUFGVM4FUͰ࡞੒ w ϗετ໊ΛݻఆͰ͖Δ w σʔλӬଓ༻ʹ17$Λ௫Ή w ͜ͷลΓΛΦϓγϣϯͰઃఆ w

    ϗετ໊ w ূ໌ॻؔ܎ͷઃఆ w ΫϥελΛ૊Ή63- ίϯϙʔωϯτͷߏ੒
  7. DPOUSPMMFSNBOBHFS w LVCFDPO fi HΛखಈͰ࡞Δඞཁ͕ ͋Δ w ৄࡉ͸ޙड़ w #PPUTUSBQ5PLFOपΓ͕ѻ͑Δ

    Α͏ʹDPOUSPMMFSΛ௥Ճ w #PPUTUSBQ5PLFOΛ࡞੒ͨ͠ ࡍʹɺͦΕʹରԠ͢Δ+84Λ ࡞੒ͯ͘͠ΕΔΑ͏ʹͳΔ ίϯϙʔωϯτͷߏ੒
  8. LVCFBENಛ༗ͷઃఆ w ,VCFSOFUFT5IF)BSE8BZͰ͸ɺखಈͰূ໌ॻΛ࡞ΓɺLVCFMFUʹט·ͤΔઃఆΛೖΕ Δ w kubeadm token createͰ࡞੒ͨ͠#PPUTUSBQ5PLFOͰΫϥελʹࢀՃ͢Δ৔߹͸ɺ ΋͏গ͠ઃఆ͕ඞཁ w

    ূ໌ॻΛࢀর͢Δݖݶ ূ໌ॻΛ%JTDPWFSͰ͖Δঢ়ଶʹ͢Δ w /PEFϦιʔεΛࢀর͢Δݖݶ w &UDʜ w LVCFBENͷιʔείʔυΛࢀর࣮ͭͭ͠૷
  9. 1SPT w ௿͍ίετͰ$POUSPM1MBOFΛϚωʔδυʹͰ͖Δ w ,VCFSOFUFTΫϥελ্ʹ$POUSPM1MBOF$PNQPOFOUTΛσϓϩΠͰ͖Δ w 7.Λ࡞Βͳͯ͘΋Α͍ w ίϯςφͷ৔߹$POUSPM1MBOFͷ্ཱͪ͛͸଎͍ w

    $POUSPM1MBOFΛݟͤͳ͍͜ͱͰɺϢʔβʔͷೝ஌ෛՙ͸Լ͕Δ w ϩʔυόϥϯαʔͷઃఆ΍ɺূ໌ॻ؅ཧͳͲΛ,VCFSOFUFT"1*্Ͱߦ͑Δͷ͸خͦ͠͏ w ಛʹূ໌ॻͷߋ৽पΓ উखʹߋ৽ͯ͠͠·͏ͷ΋ߟ͑΋ͷ͕ͩ
  10. $POT w $POUSPM1MBOF1SPWJEFSͷࣗ࡞͕ඞཁ w *OGSBTUSVDUVSF1SPWJEFSͱҧ͍ɺ஌ݟ΋গͳͦ͏ w ϊΠδʔωΠόʔͷӨڹΛड͚΍ͦ͢͏ w Ϣʔβʔ͝ͱʹϦιʔεΛಠཱͤ͞Δ͜ͱͰղܾ͸Ͱ͖Δ w

    αʔϏεఏڙऀଆͷ؅ཧίετ͸ߴ͍ w ϢʔβʔͷܭࢉࢿݯͰಈ͔͍ͯͨ͠΋ͷΛαʔϏεఏڙऀଆʹدͤΔͨΊɺӡ༻ අ༻ͷ҈෼ʹ΋Өڹ͕🥹