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昔の自分に伝えたい容量回復のためのDockerの仕組み / docker_tips
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KSK
July 27, 2018
Programming
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昔の自分に伝えたい容量回復のためのDockerの仕組み / docker_tips
KSK
July 27, 2018
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Transcript
ੲͷࣗʹ͍͑ͨ ༰ྔճ෮ͷͨΊͷ Docker ͷΈ ksk1030 @Repro Tech Meetup #1 /
2018.07.27
ࠓͷ·ͱΊ
ɹimage → ϓϩάϥϜ ɹcontainer → ϓϩηε ɹvolume → ετϨʔδ ɹ˞ࣗͳΓʹཧղΛਐΊΔͨΊͷࡶͳཧͰ͢…
Dockerͱͷग़ձ͍
DockerΛ͍࢝Ίͨ͜Ζ ୭͔͕docker-compose.ymlʹ ͓·͡ͳ͍Λॻ͍ͯ͘Εͨʂ ͰͬͯΔͱͲΜͲΜ ༰ྔ৯͏Μ͚ͩͲ…ʁ Α͘Θ͔ΒΜ͚Ͳศརʂ ڥߏஙḿΔʂ
DockerΛ͍࢝Ίͨ͜Ζ ୭͔͕docker-compose.ymlʹ ͓·͡ͳ͍Λॻ͍ͯ͘Εͨʂ ͰͬͯΔͱͲΜͲΜ ༰ྔ৯͏Μ͚ͩͲ…ʁ Α͘Θ͔ΒΜ͚Ͳศརʂ ڥߏஙḿΔʂ Կ͕ى͖͍͔ͯͨ ɾ్த͔ΒJoinͨ͠ϓϩδΣΫτͰDocker͕ ɹΘΕ͍ͯͨ
ɾͱΓ͋͑ͣ docker-compose up ɾͦͯ͠ѹഭ͞ΕΔετϨʔδ…
DockerΛ͍࢝Ίͨ͜Ζ ୭͔͕docker-compose.ymlʹ ͓·͡ͳ͍Λॻ͍ͯ͘Εͨʂ ͰͬͯΔͱͲΜͲΜ ༰ྔ৯͏Μ͚ͩͲ…ʁ Α͘Θ͔ΒΜ͚Ͳศརʂ ڥߏஙḿΔʂ ରԠʁ ɾάάΕରॲ๏ग़ͯ͘Δ͕ ɾimageʁ
containerʁ volumeʁ ɾதΛཧղ͠ͳ͍··ίϚϯυΛୟ͘ …
DockerΛ͍࢝Ίͨ͜Ζ ୭͔͕docker-compose.ymlʹ ͓·͡ͳ͍Λॻ͍ͯ͘Εͨʂ ͰͬͯΔͱͲΜͲΜ ༰ྔ৯͏Μ͚ͩͲ…ʁ Α͘Θ͔ΒΜ͚Ͳศརʂ ڥߏஙḿΔʂ ରԠʁ ɾάάΕରॲ๏ग़ͯ͘Δ͕ ɾimageʁ
containerʁ volumeʁ ɾதΛཧղ͠ͳ͍··ίϚϯυΛୟ͘ … தΛཧղ্ͨ͠Ͱରॲ͍ͨ͠
ͦΕͧΕͷػೳ
ɹimage Λ pull / build ͯ͠ ɹcontainer ͱ࣮ͯ͠ߦ͢Δ ɹvolume σʔλӬଓԽʹ
ɹ ΘΕΔಛघσΟϨΫτϦ
Πϝʔδ͘͢͠ཧ͢Δͱ
ɹimage → ϓϩάϥϜ ɹcontainer → ϓϩηε ɹvolume → ετϨʔδ ɹ˞ࣗͳΓʹཧղΛਐΊΔͨΊͷࡶͳཧͰ͢…
image ɾ࣮ߦՄೳͳܗͰ·ͱΊΒΕͨύοέʔδ ɾΑ͘ΘΕΔͷ Docker Hub ͱ͍͏ ɹαΠτ͔ΒμϯϩʔυͰ͖Δ (docker pull) ɹ-
nginx / redis / mysql … ɾࣗͰ࡞͢Δ͜ͱͰ͖Δ (docker build)
image # Ұཡදࣔ $ docker images -a # ࢦఆͯ͠আ $
docker rmi [image] # ͬͯͳ͍ͷ·Δͬͱআʢv1.2.5 Ҏ߱ʣ $ docker image prune
container ɾಈ͍͍ͯΔϓϩάϥϜͷ࣮ମ ɾimage Λ࣮ߦ͢Δ͜ͱͰੜ͞ΕΔ ɾϓϩάϥϜΛ࣮ߦͯ͠ϓϩηε͕Δɺతͳ
container # Ұཡදࣔ $ docker images -a # ࢦఆͯ͠ఀࢭɺআ $
docker stop [container] $ docker rm [container] # ͬͯͳ͍ͷ·Δͬͱআʢv1.2.5 Ҏ߱ʣ $ docker container prune
volume ɾෳͷίϯςφ͔ΒࢀরͰ͖Δಛघͳ ɹσΟϨΫτϦ ɾϓϩηεؒͰڞ༗͍ͨ͠σʔλ ɹ- มͰͳ͘ετϨʔδͷΑ͏ͳ ɾvolumeΛհͯ͠σʔλΛϩʔΧϧʹ࣋ͭ͜ͱ ɹͰ container ͕ফ͑ͯσʔλอ࣋
container # Ұཡදࣔ $ docker volume ls # ࢦఆͯ͠ఀࢭɺআ $
docker volume rm [volume] # ͬͯͳ͍ͷ·Δͬͱআʢv1.2.5 Ҏ߱ʣ $ docker volume prune
ͭ·Γ݁ہ ɾ·ͣ container Λఀࢭ&আ ɾ͍࣍Ͱ image / volume Λআ ɹ-
volume container ͷআ࣌ʹ -v Ͱ ɾγεςϜͷͰݴ͑… ϓϩηεΛ kill ͔ͯ͠ΒϓϩάϥϜͷ ϑΝΠϧDBΛআ͢Δɺͱ͍͏
ͪͳΈʹ ɾDocker for mac ͬͯΔͱ Docker.qcow2 ɹͱ͍͏ϑΝΠϧ͕ංେԽ͢Δ ɾআͳΓѹॖͳΓͪ͜ΒཁରԠ ɹ- v1.13
Ҏ߱ఆظతʹѹॖ͞Ε͍ͯΔʢʁʣ # ஔ͍ͯ͋ΔσΟϨΫτϦ $ ll ~/Library/Containers/com.docker.docker/ Data/com.docker.driver.amd64-linux/ Docker.qcow2
݁
ͪΌΜͱυΩϡϝϯτಡΉ͠ https://docs.docker.com/
ࣗݾհ ɾKeisuke Nakatane (@ksk1030) ɾORSO Inc. ৽نࣄۀ։ൃࣨ ɾαʔόɿΞϓϦɿϑϩϯτ ʹɹ̓ɹɿɹ̍ɹɿɹ̎ɹɹ͘Β͍ ɾલ৬ژͷήʔϜͰਓࣄ
ɾΤϯδχΞੵۃ࠾༻தʂʂ
Thank you for listening !!