20130727 Packerの紹介 (Python Developers Festa 2013.07)

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ࢁޱೳ᫫ id : ymotongpoo 1 1BDLFSͷ঺հ 1ZUIPO%FWFMPQFST'FTUB

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͓લɺ୭Αʁ •  ࢁޱೳ᫫ʢ΍·͙ͪΑ͠;Έʣ •  :PV5VCF5FDIOJDBM"DDPVOU.BOBHFS (PPHMF*OD •  JEZNPUPOHQPP –  ͱΜ΀ʔͱݺ͹Ε͍ͯ·͢ •  :"."(6$)*XFCMPH –  ZNPUPOHQPPIBUFOBCMPHDPN 2

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͓લɺ୭Αʁ •  (P͕޷͖Ͱ͢ •  (P$POGFSFODFͱ͍͏ΠϕϯτΛ͠·ͨ͠ •  Թઘʹߦ͘ʮ(PཏԹઘʯͱ͍͏ԹઘاըΛ͠· ͨ͠ •  ઌ೔͸౎ిߥ઒ઢΛି͠੾ͬͨʮిंͰ(Pʯ ͱ͍͏ΠϕϯτΛ͠·ͨ͠ 3

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͓લɺ୭Αʁ 4

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ཱྀͷࢥ͍ग़ 5

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"HFOEB •  1BDLFSͬͯφχʁ •  1BDLFSΛ࢖ͬͯΈΔ •  1BDLFSΛ֦ுͯ͠ΈΔ 6

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7 ͬͯφχʁ

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1BDLFSͬͯφχʁ •  7BHSBOUͷ࡞ऀ.JUDIFMM)BTIJNPUP࡞ •  (P੡ •  ʹWFSTJPOެ։ –  ൃද࣌࠷৽൛͸ •  ެࣜαΠτ –  http://www.packer.io 8

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10 Packer is a tool for creating identical machine images for multiple platforms from a single source configuration. Platform A Platform B Platform C Machine Image A Machine Image B Machine Image C

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11 ͦΕͬͯ 7BHSBOUͱ͔ 'BCSJDͱ͔ͱ φχ͕ҧ͏ͷʁ

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֤ϓϩϏδϣχϯάπʔϧͱͷҧ͍ 12 OS distribution pkg pkg 7BHSBOU΍'BCSJD͸جຊతͳ04Πϝʔδͷ্ʹ ઃఆΛߦ͏ •  パッケージのインストール •  設定ファイルのコピー •  スクリプトの実行 etc… file script Machine Image

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֤ϓϩϏδϣχϯάπʔϧͱͷҧ͍ 13 1BDLFS͸ͦ΋ͦ΋ͷϚγϯΠϝʔδΛ࡞੒ Packer config Packer OS distribution Machine Image A OS distribution Machine Image B

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7FFXFFͱ͸φχ͕ҧ͏ͷʁ •  7FFXFFͱ΍ͬͯΔ͜ͱ͸͍ۙ –  7FFXFF͸7JSUVBM#PY 7.XBSF'VTJPO ,7. 1BSBMMFMTΛ࡞ΕΔ –  ֦ͨͩ͠ுػߏ͸ͳ͍ –  ϓϩϏδϣχϯά͸7BHSBOUݶఆ 14

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ݱঢ়ରԠϓϥοτϑΥʔϜ 15

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16 1BDLFSΛ࢖ͬͯΈΔ

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Πϯετʔϧ 17 $ wget http://path/to/packer.binary.zip $ unzip packer.binary.zip

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18 Ҏ্

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Πϯετʔϧ (P੡ͳͷͰ֤؀ڥ༻ͷόΠφϦΛ࢖͑͹ྑ͍ 19 http://www.packer.io/downloads.html

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ઃఆϑΝΠϧ •  ઃఆϑΝΠϧ͸+40/ܗࣜͰهड़ •  (PͷUFYUUFNQMBUFʹ४ڌͯ͠ɺม਺ΛຒΊࠐ Ή͜ͱ΋Մೳ •  ཁૉ͸ͭ –  CVJMEFSTԾ૝ϚγϯΛ࡞੒͢ΔΠϯϑϥͷࢦఆ –  QSPWJTJPOFSTϏϧυ׬ྃޙͷ؆୯ͳϓϩϏδϣχϯ ά –  QPTUQSPDFTTPSTϓϩϏδϣχϯά׬ྃޙͷॲཧ 20

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ઃఆϑΝΠϧ { "builders": [{ "type": "amazon-‐ebs", "access_key": "YOUR KEY HERE", "secret_key": "YOUR SECRET KEY HERE", "region": "us-‐east-‐1", "source_ami": "ami-‐de0d9eb7", "instance_type": "t1.micro", "ssh_username": "ubuntu", "ami_name": "packer-‐example {{.CreateTime}}" }], “provisoners”: [ “type”: “shell”, “scripts”: [ “initial-‐install.sh” ] ], “post-‐prosessors”: [{ “type”: “compress”, “format”: “tar.gz” }] } 21

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࣮ߦ͢Δ 22 $ packer validate $ packer build config.json

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ςοςϨʔ 23

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24 1BDLFSΛ֦ுͯ͠ΈΔ

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1BDLFS1MVHJOT •  packerίϚϯυ͸ඪ४Ͱ΋ϓϥάΠϯΛୟ͍ͯ ͍Δ 25 $ ls packer packer-‐builder-‐amazon-‐ebs packer-‐builder-‐digitalocean packer-‐builder-‐virtualbox packer-‐builder-‐vmware packer-‐command-‐build packer-‐command-‐fix packer-‐command-‐validate packer-‐post-‐processor-‐vagrant packer-‐provisioner-‐file packer-‐provisioner-‐shell શ෦ϓϥάΠϯ

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1BDLFS1MVHJOT •  ϓϥάΠϯͷ࡞੒͸(PͰͷΈ࡞੒Մೳ –  ֤ͨͩ͠ϓϥάΠϯ͸ಠཱͨ͠ίϚϯυͱͯ͠࡞੒ –  ໋໊نଇ͸packer-‐TYPE-‐NAME ྫ QBDLFSCVJMEFSBNB[POFCT QBDLFSDPNNBOEWBMJEBUF 26

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1BDLFS1MVHJOT •  ֦ுΛ௥Ճͨ͠Β$HOME/.packerconfig ʹ௥ Ճͷ֦ுΛॻ͍͓ͯ͘ –  ઈରύε or ૬ରύε or PATH͕௨͍ͬͯΔͱ͜Ζ –  ඪ४ίϚϯυ΋ಉܗࣜͰϋʔυίʔυ͞Ε͍ͯΔ 27 { "builders": { "custom-‐cloud": "packer-‐builer-‐custom-‐cloud" }, "commands": { "spam": "packer-‐command-‐spam", "egg": "packer-‐command-‐egg" } }

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1BDLFSશମͷίʔυߏ੒ 28 packerίϚϯυ buildersͰݺ͹ΕΔඪ४֦ு܈ post-‐processorsͰݺ͹ΕΔඪ४֦ு܈ provinoersͰݺ͹ΕΔඪ४֦ு܈ packerͰݺ͹ΕΔඪ४֦ு܈ ͍͚ͭͩ͜ݟΕ͹ྑ͍ ඪ४֦ு܈ͷNBJOHP

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1BDLFSશମͷίʔυߏ੒ •  ύοέʔδͩͱҎԼͷͭ •  QBDLFSQBDLFS –  1BDLFSͷίΞɾ֦ு։ൃͷͨΊͷύοέʔδ •  QBDLFSQBDLFSQMVHJO –  ϓϥάΠϯ֦ுͷJOUFSGBDFͷఆٛͷΈ 29 github.com/mitchellh/packer/packer github.com/mitchellh/packer/packer/plugin

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#VJMEFSͷ֦ு 30 Packer Plugins type Builder interface { Prepare(...interface{}) error Run(ui Ui, hook Hook, cache Cache) (Artifact, error) Cancel() } •  1SFQBSF ઃఆϑΝΠϧͷಡΈࠐΈͱલॲཧ –  ͍͍ͨͯ͸map[string]interface{} Ͱ౉͞ΕΔ •  3VO ϚγϯΠϝʔδͷ࡞੒Λߦ͏ –  Artifact JOUFSGBDFΛ࣮૷ͨ͠TUSVDUʹϚγϯΠϝʔδʢͷϝλσʔλʣ •  $BODFM $USMDͳͲ͕ԡ͞Εͨ࣌ͷޙॲཧ

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$PNNBOEͷ֦ு 31 Packer Plugins type Command interface { Help() string Run(env Environment, args []string) int Synopsis() string } •  )FMQ packer COMMAND -‐-‐helpͰग़ྗ͞ΕΔϝοηʔδ •  3VO ࣮ࡍͷίϚϯυͷ࣮ߦ –  ىಈதͷ1BDLFSͷ΄΅͢΂ͯͷ৘ใΛͱΕΔ •  CVJMEFS 6* $BDIF QPTUQSPDFTTPS QSPWJTJPOFS •  4ZOPQTJT packer -‐-‐helpͰग़ྗ͞ΕΔ୹͍ϝοηʔδ –  50จࣈఔ౓

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ͦͷଞͷ֦ு •  QPTUQSPDFTTPS •  QSPWJTJPOFS –  QSPWJTPOFSͷϑοΫ͸CVJMEFSଆͷ֦ுͰ࣮૷͢Δඞ ཁ͕͋Δ 32 Packer Plugins ࠓճ͸ॏཁ͡Όͳ͍ͷͰলུ

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33 ·ͱΊ

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34 Packer is a tool for creating identical machine images for multiple platforms from a single source configuration. Platform A Platform B Platform C Machine Image A Machine Image B Machine Image C

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·ͱΊ •  ϓϩϏδϣχϯάΛޠΔલʹɺϚγϯΠϝʔδ ͷ͜ͱΛߟ͑Α͏ •  ֦ு΋࡞ΕΔͷͰɺࣾ಺؀ڥ༻ʹ΋֦ு͕࡞Ε ͯΑ͍ •  (P͸ྑ͍ –  ඪ४ͷ+40/ύʔαΦϓγϣϯύʔαɺόΠφϦ഑ ෍ 35