Docker を使ったサービス構築速習会

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%PDLFSΛ࢖ͬͨ αʔϏεߏங ଎शձ!8"/5&%-: EPDLFS@XBOUFEMZ %BJTVLF'VKJUB!EUBO ʢެ։൛ʣ

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Daisuke Fujita @dtan4 Πϯλʔϯ  @ΠϯϑϥνʔϜ

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࣭໰౳͸4ZODͷ෦԰ʹͯड͚෇͚·͢ ʢຊ೔ΑΓʣ.BD"QQ4UPSF͔Βμ΢ϯϩʔυ΋Ͱ͖·͢ʂ CHECK! http://s.wantedly.com/1SL5Um0

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%PDLFSೖͬͯ·͔͢ʁಈ͖·͔͢ʁ CHECK! $ docker -v Docker version 1.10.0, build 590d510 $ docker ps CONTAINER ID … $ docker-compose -v docker-compose version 1.6.0, build unknown ʢόʔδϣϯ͸ಛʹؾʹ͠ͳ͍Ͱ͢ɻ΋ͪΖΜ࠷৽Ͱ͋Δ΄ͲΑ͍ʣ

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ຊ೔ͷ಺༰ w 8BOUFEMZͰͷ։ൃʹ͓͚Δॾ໰୊ w %PDLFS$PNQPTFͰαʔϏεΛಈ͔ͦ͏ w %PDLFS$PNQPTFͰߏஙͨ͠ΞϓϦΛ  σϓϩΠ͠Α͏ w %PDLFS1BB4*BB4

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Wantedly Ͱͷ։ൃʹ  ͓͚Δॾ໰୊

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www.wantedly.com Λ  ࢧ͑Δٕज़ w 3BJMTͷ΄͔ʹʜ w 1PTUHSF42- w &MBTUJDTFBSDI w .FNDBDIFE w 3FEJT w 1IBOUPN+4 w ։ൃɾςετʹ͸͜ΕΒͷαʔϏε͕ඞཁ

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www.wantedly.com Λ  ࢧ͑Δٕज़ w )PNFCSFXʹΑΔ։ൃ؀ڥߏங w brew updateͰ։ൃ؀ڥ͕յΕΔ w &MBTUJDTFBSDI͸ຊମͱϓϥάΠϯͷ  όʔδϣϯΛγϏΞʹ߹Θͤͳ͍ͱμϝ w ຊ൪ͷ&MBTUJDBDIF͸3FEJTYͷΈ w ΠϯετʔϧεΫϦϓτͰແཧ΍Γ  όʔδϣϯΛݻఆʜ w bundle install͕ࣦഊʢಛʹ$֦ுHFNʣ

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Elasticsearch on Docker

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Elasticsearch on Docker w ຊ൪ͷ&MBTUJDTFBSDI͸%PDLFSίϯςφͱ ͯ͠Քಇ͍ͯ͠Δ w RVBZJP্ͰΠϝʔδ؅ཧ w αʔϏεʹ߹Θͤͨνϡʔχϯά w ಠࣗࣙॻΛಉࠝ w ͜ΕΛ։ൃ΍ςετͰ࢖͍͍ͨʜ

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ϑΟʔνϟϒϥϯνͷ  σϓϩΠ w ຊ൪؀ڥ 1SPEVDUJPO 2"؀ڥ 2" w 2"ॱ൪଴ͪ໰୊ w 2"ͭͩͱ଍Γͳ͘ͳ͖ͬͯͨ w ࣗ෼ͷϒϥϯνΛؾܰʹσϓϩΠͰ͖Δ  ؀ڥ͕΄͍͠

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ϚΠΫϩαʔϏεج൫ w ੲ͔Β3BJMTͰ࣮૷͞Ε͍ͯͨػೳʹ͍ͭͯɺ ύϑΥʔϚϯε޲্ͷͨΊʹ(PͰ࠶࣮૷  ͢Δྫ͕͋Δ w 4ZOD΍8BOUFEMZ5PPMTͷΑ͏ʹɺຊମͱ ͸ҟͳΔαʔϏεΛϦϦʔε͢Δػձ͕  ૿͑ͨ w ͜Μͳͱ͖ɺ޻਺Λ͔͚ͯΠϯϑϥΛ༻ҙ͢ ΔͷͰ͸ͳ͘DockerfileΛॻ͚͹σϓϩΠͰ ͖ΔΑ͏ͳ؀ڥ͕΄͍͠

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Docker

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Docker Ͱ؀ڥߏங w ΞϓϦ୯ҐͰ؀ڥΛಠཱͤ͞ΒΕΔ w ͜ͷαʔϏεͰ͸&Tɺ͋ͷαʔϏεͰ ͸&TʜͰ΋ॊೈʹରԠՄೳ w ຊ൪؀ڥΛखݩͰ༰қʹ࠶ݱՄೳ w ΞʔΩςΫνϟґଘ͔Β୤٫Ͱ͖Δ w ඇΠϯϑϥͰ΋%PDLFSpMFΛॻ͖΍͍͢ w ͳͲͳͲ

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Docker Ͱ؀ڥߏங w ෳ਺ίϯςφͷ؅ཧ͕໘౗ w 3BJMT͸൪ϙʔτͰཱͨͤͯɺ 1PTUHSF42-ͱMJOLͰͭͳ͛ͯʜ w ্ཱͪ͛ॱং΋ߟྀ͠ͳ͍ͱ͍͚ͳ͍ 1PTUHSF42- 3FEJT 3BJMT 3000/tcp link db:postgres link redis:redis

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Docker Compose

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EPDLFSDPNQPTF Docker Compose w ෳ਺ͷ%PDLFSίϯςφͰߏ੒͞ΕΔΞϓϦ Λ؆୯ʹ؅ཧ͢ΔͨΊͷπʔϧ w :".-Ͱ֤ίϯςφͷىಈߏ੒ͱ࿈ܞΛهड़ w docker runͷΦϓγϣϯΛߏ଄తʹ  ॻ͚ΔͨΊɺ୯ҰίϯςφͰ΋ศར w ίϚϯυҰൃͰΞϓϦͷVQEPXO  TDBMJOH͕Մೳ

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docker-compose.yml ຊൃදͰ͸$PNQPTFpMFGPSNBUWʹ  ४ڌͯ͠આ໌͍͖ͯ͠·͢ db: image: postgres web: build: . command: bundle exec rails s -p 3000 -b '0.0.0.0' volumes: - .:/myapp ports: - "3000:3000" links: - db

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$ git clone \ https://github.com/dtan4/docker-service-rails.git $ git checkout step0 Docker Compose Ͱ  Rails ΛݐͯͯΈΑ͏

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w ·ͣ1PTUHSF42-ΛཱͯΔهड़ Docker Compose Ͱ  Rails ΛݐͯͯΈΑ͏ db: image: postgres:9.4

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w ͍ͭͮͯ3BJMTΛཱͯΔهड़ Docker Compose Ͱ  Rails ΛݐͯͯΈΑ͏ web: build: . command: bin/rails s -p 3000 -b '0.0.0.0' environment: - DATABASE_HOST=db - DATABASE_PORT=5432 - DATABASE_USER=postgres ports: - "3000:3000" links: - db

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w ىಈʂ w ৽͍͠λʔϛφϧ΢Οϯυ΢Λ։͍ͯʜ w σʔλϕʔεͷηοτΞοϓ Docker Compose Ͱ  Rails ΛݐͯͯΈΑ͏ $ docker-compose build $ docker-compose up $ docker-compose run web bin/rake db:setup %PDLFS.BDIJOF্ͰCVJME͕ࣦഊ͢Δ৔߹͸ɺ $ docker-machine stop default $ docker-machine up default Ͱ7.Λ࠶ىಈ͍ͯͩ͘͠͞ VQ͕ࣦഊ͢Δ৔߹͸ɺ $ docker-compose stop $ docker-compose rm -f ͰίϯςφΛফͯ͠΍Γ௚͢

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w ΞΫηεͯ͠Έ·͠ΐ͏ʂ Docker Compose Ͱ  Rails ΛݐͯͯΈΑ͏ $ open http://$(docker-machine ip dev):3000 # Linux など直接 Docker が稼働しているなら $ open http://localhost:3000 EFGBVMU EPDLFSWNͳͲ खݩͷ؀ڥʹ߹Θ͍ͤͯͩ͘͞

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αʔόىಈޙͷॳظԽॲཧ͸ɺFOUSZQPJOU  εΫϦϓτΛ͔·ͤΔํ๏͕͋Δ ͋ΘͤͯΑΈ͍ͨ  IUUQTNFEJVNDPN!LFMTFZIJHIUPXFSGSBDUVSFEBQQTDED Tips #!/bin/bash bin/rake db:create bin/rake db:migrate bin/rake db:seed exec $@ FROM ruby:2.3.0-slim MAINTAINER dtan4 # … ENTRYPOINT ["/app/entrypoint.sh"] CMD ["bin/rails", "s]

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w KXJMEFSOHJOYQSPYZ w VIRTUAL_HOST؀ڥม਺ͷத਎Λ༻͍ͯ  ϧʔςΟϯάΛ࡞੒ w ઌ΄Ͳͷdocker-compose.ymlʹҎԼΛ௥Ճ nginx ΋૊Έ߹ΘͤΑ͏ nginx: image: jwilder/nginx-proxy ports: - 80:80 volumes: - /var/run/docker.sock:/tmp/docker.sock:ro

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w 3BJMTͷϙʔτׂ౰Λͳ͘͢ w VIRTUAL_HOST؀ڥม਺Λ௥Ճ nginx ΋૊Έ߹ΘͤΑ͏ web: build: . command: bin/rails s -p 3000 -b '0.0.0.0' environment: - DATABASE_HOST=db - DATABASE_PORT=5432 - DATABASE_USER=postgres - VIRTUAL_HOST=docker.sokushu.dev links: - db

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w ىಈʂ w ઃఆͨ͠ϗετ໊ͰΞΫηε w /etc/hostsΛॻ͖׵͑ͯϒϥ΢βͰ΋ nginx ΋૊Έ߹ΘͤΑ͏ $ docker-compose up $ curl -H "Host: docker.sokushu.dev" \ http://$(docker-machine ip docker-vm)

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σϓϩΠ

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Heroku w git push͢Δ͚ͩͰΞϓϦ͕σϓϩΠ͞Εɺ  ࣗಈͰ63-΋ׂΓৼΒΕΔ w 1PTUHSF42- 3FEJT .FNDBDIFE͸ඪ४Ͱϓ ϥάΠϯ͕༻ҙ͞Ε͍ͯΔ w ͠͹Β͘લʹ%PDLFSରԠ΋ͨ͠ w खݩͰಉ͡Α͏ͳߏ੒Λ࠶ݱͰ͖Δ w ࣗલOHJOY &MBTUJDTFBSDIͳͲ͸ݐͯΒΕͳ͍

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Paus w ΠϯυωγΞޠͰʮ͘͡Βʯ w docker-compose.ymlॻ͍ͯgit push͢Δ  ͚ͩͰɺΫϥ΢υ্ʹΞϓϦέʔγϣϯ͕  ىಈ͢Δ؆қ1BB4 w $PSF04%PDLFS EUBOQBVT

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Paus ʹσϓϩΠ͠Α͏ • git checkout master w docker-compose.ymlมߋ web: image: quay.io/dtan4/docker-service-rails:latest command: bin/rails s -p 8080 -b '0.0.0.0' environment: - DATABASE_HOST=db - DATABASE_PORT=5432 - DATABASE_USER=postgres ports: - 8080 links: - db

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Paus ʹσϓϩΠ͠Α͏ w IUUQQBVTXBOUFEMZDPNͰެ։伴ొ࿥ ࣗ෼ͷϢʔβ໊ 44)ެ։伴

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Paus ʹσϓϩΠ͠Α͏ • ~/.ssh/configʹҎԼΛ௥Ճ Host paus HostName paus.wantedly.com User git Port 2222 IdentityFile ~/.ssh/id_rsa ઌ΄Ͳొ࿥ͨ͠ެ։伴ͷ ϖΞͱͳΔൿີ伴

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Paus ʹσϓϩΠ͠Α͏ w ϦϞʔτϦϙδτϦpausΛ௥Ճ $ git remote add paus \ paus:/

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Paus ʹσϓϩΠ͠Α͏ w git pushͯ͠σϓϩΠʂ $ git push paus master

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Paus ʹσϓϩΠ͠Α͏ σϓϩΠ͞Εͨ ΞϓϦͷ63-

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Paus ΞʔΩςΫνϟ %PDLFS  $PNQPTF FUDE HJUSFDFJWFE git push docker-compose  up etcdctl set 7VMDBOE http://dtan4-rails-ffe7rf8.example.com XFC EC XFC EC

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Docker PaaS / IaaS

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Docker PaaS / IaaS w )FSPLVΫϩʔϯ w EPLLV BMU 'MZOO %FJT &NQJSF w ಠࣗܗࣜ w ,VCFSOFUFT "NB[PO&$4 w Πϯϑϥ͝ͱ؅ཧ w 5VUVN %$)2JP

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·ͱΊ

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·ͱΊ w 8BOUFEMZͷ։ൃݱ৔Ͱͷॾ໰୊ʹର͢Δ  ղܾࡦͱͯ͠ɺ%PDLFSΛ༻͍ͨ؀ڥߏஙΛ ঺հ͠·ͨ͠ w %PDLFS$PNQPTFΛ༻͍ͯ3BJMTͱෳ਺ͷ αʔϏεΛ૊Έ߹ΘͤͨΞϓϦ͕ߏஙͰ͖Δ Α͏ʹͳΓ·ͨ͠ w 1BB4*BB4ͷ܈༤ׂڌ࣌୅