Docker入門 - Speaker Deck

Docker入門

by imtnd

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Docker ೖ໳ NaITE #13 2016.4.27

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ࣗݾ঺հ ໊લɿ֯ాɹढ़ʢͭͷͩɹ͠ΎΜʣ ίϛϡχςΟɿNaITEɹͳͲ Twitterɿ͍ΉͯΜˏimtnd ۈ຿ઌɿ௨৴ܥ੡଄ۀ ۀ຿ɿιϑτ΢ΣΞ։ൃɹ5೥໨

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Docker

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ຊηογϣϯͷ໨త DockerΛͳΜͱͳ͘ཧղ͢Δ DockerΛ࠷௿ݶ࢖͑ΔΑ͏ʹͳΔ

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Docker

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Dockerʹ͍ͭͯ Dockerͱ͸ɺԾ૝Խٕज़ͷҰͭ ίϯςφͱ͍͏୯ҐͰԾ૝Խ͢Δ͜ͱʹΑΓɺ OSͳͲʹґଘ͠ͳ͍γεςϜΛఏڙ

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Dockerʹ͍ͭͯ Virtual Machine container https://www.docker.com/what-docker

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DockerͷϝϦοτ VMͱҧ͍ܰྔͰ͋Γɺىಈɺऴ͕ྃߴ଎Ͱ ͋Δ CIͳͲͰ࢖͍ࣺͯͳ͕ΒΫϦʔϯͳ؀ڥͰς ετ͢Δ͜ͱ͕Ͱ͖Δ ύοέʔδΠϝʔδ͕ڞ༗Ͱ͖ɺ͙͢ʹ࢖༻ ͢Δ࢓૊Έ͕͋Δ

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Docker Toolbox

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Docker Toolbox Dockerʹؔ࿈͢Δπʔϧ͕ύοέʔδԽ͞Ε ͨ΋ͷ Docker Engine Docker Machine Docker Compose Kitematic

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DockerͷΠϯετʔϧํ๏ Cent OS 7 Ҏ্ yum ͰΠϯετʔϧՄೳ Ubuntu 15.04 Ҏ্ ύοέʔδΛ௥Ճͯ͠ɺapt-getͰΠϯε τʔϧՄೳ https://docs.docker.com/engine/installation/linux/ubuntulinux/

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DockerͷΠϯετʔϧํ๏ ίϯςφઐ༻OS https://coreos.com/using-coreos/containers/

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DockerͷΠϯετʔϧํ๏ ίϯςφઐ༻OS CoreOS Project Atomic Red Hat Enterprise Linux Atomic Host Snappy Ubuntu Core

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DockerͷΠϯετʔϧํ๏ WindowsɺMac OSͷ৔߹ Virtual Box Docker Toolbox ※ɹ2016/04/27ݱࡏͷϝδϟʔͳํ๏

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DockerͷΠϯετʔϧํ๏ MacOSͱWindowsͷωΠςΟϒԾ૝ԽΛ༻͍ͨ Docker७ਖ਼πʔϧʮDocker for Mac/Windowsʯొ৔ɺ VirtualBox͸ෆཁʹ http://www.publickey1.jp/blog/16/docker_for_macwindows.html

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WindowsɺMac OSͰԿ΋ߟ͑ͳ͍ͰΠϯε τʔϧ͢ΔͱɺVIrtual Box্ʹ”default”ͱ͍ ͏Ծ૝Ϛγϯ͕Ͱ͖͍ͯΔ Linuxͷ৔߹͸ίϚϯυͰɺDocker༻ͷԾ૝ ϚγϯΛ࡞੒͢Δ DockerͷΠϯετʔϧํ๏

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Docker Machine

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Docker Machine Docker ϗετΛϚωδϝϯτ͢Δπʔϧ Docker ϗετͷ࡞੒ Docker ϗετͷىಈ Docker ϗετͷऴྃɹɹɹͳͲ

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Docker MachineίϚϯυ Docker MachineΛVirtual Box্ʹ࡞੒ Docker Machineͷ࡟আ $docker-machine create —driver virtualbox vmD(Ծ૝Ϛγϯ໊) $docker-machine rm vmD(Ծ૝Ϛγϯ໊)

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Docker MachineίϚϯυ Dockerϗετͷىಈ Dockerϗετͷऴྃ DockerϗετͷҰཡදࣔ $docker-machine start default(Ծ૝Ϛγϯ໊) $docker-machine stop default(Ծ૝Ϛγϯ໊) $docker-machine ls

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Docker MachineίϚϯυ DockerϗετͷIPΞυϨε֬ೝ Dockerϗετ΁ͷϩάΠϯ Dockerϗετͷ؀ڥม਺֬ೝ $docker-machine ip default(Ծ૝Ϛγϯ໊) $docker-machine ssh default(Ծ૝Ϛγϯ໊) $docker-machine env default(Ծ૝Ϛγϯ໊)

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DockerίϚϯυ DockerͷΠϝʔδͷऔಘ $docker pull centos:centos6 ϦϙδτϦ໊ λά

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DockerίϚϯυ $docker pull centos:centos6 DockerϨδετϦʹ ެ։͞Εͨ DockerΠϝʔδ pull

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DockerϨδετϦ DockerϨδετϦͱ͸ɺDockerͷΠϝʔδΛ ؅ཧ͓ͯ͘͠৔ॴ ެࣜͰ༻ҙ͍ͯ͠ΔDockerϨδετϦ͸ Docker Hub https://hub.docker.com/

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DockerίϚϯυ Docker ΠϝʔδͷҰཡදࣔ Docker Πϝʔδͷ࡟আ $docker images $docker rmi centos:centos6(ϦϙδτϦ໊:λά)

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DockerίϚϯυ Cent OSͷDockerΠϝʔδΛಈ͔ͯ͠ΈΔ $docker run -t -i —name centos centos:centos6 /bin/bash ίϯςφ໊Λ෇͚ΒΕΔ

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DockerίϚϯυ Docker ίϯςφͷҰཡදࣔ Docker ίϯςφͷ࡟আ $docker ps -a $docker rm centos6(ίϯςφ໊)

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DockerίϚϯυ nginx(ΤϯδϯΤοΫε)ͷΠϝʔδऔಘ ϙʔτʹׂΓ෇͚ͯىಈ $docker pull nginx:latest $docker run -d -p 8080:80 —name nginx nginx:latest WebαʔόΛಈ͔ͯ͠ΈΔ

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DockerίϚϯυ Docker ίϯςφͷऴྃ Docker ίϯςφͷىಈ $docker stop nginx(ίϯςφ໊) $docker start nginx(ίϯςφ໊)

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Dockerﬁle Dockerﬁleͱ͸ɺDockerΠϝʔδΛ࡞੒͢Δ ݩͱͳΔϑΝΠϧ makeϑΝΠϧͷΑ͏ͳ෺ͰɺҰίϚϯυͰ DockerΠϝʔδ͕࡞੒ग़དྷΔ ؆୯ʹهड़Ͱ͖ɺݟͨ໨΋ཧղ͠΍͍͢ͷ͕ ಛ௃

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Dockerfile Dockerfileαϯϓϧ $git clone https://github.com/imtnd/httpd.git httpd +- Dockerfile +- index.html ※ɹGit͕ͳ͍ਓ͸ϒϥ΢β͔Β௚઀ΞΫηε

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Dockerﬁle httpdσΟϨΫτϦʹҠಈ $cd httpd DockerﬁleΛݩʹDockerΠϝʔδͷ࡞੒ $docker build -t httpd ./

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Dockerﬁle ίϯςφͷىಈ $docker run -d -p 80:80 httpd(ϦϙδτϦ໊) ϒϥ΢βͰϗετͷIPΞυϨεʹΞΫηε͠ ͯΈΔͱɺ”hello docker”ͱݟ͑Δ

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Dockerﬁle FROM centos:centos6 MAINTAINER imtnd RUN yum install -y httpd ADD index.html /var/www/html/index.html EXPOSE 80/tcp CMD ["/usr/sbin/httpd","-D","FOREGROUND"]

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Dockerﬁle FROM centos:centos6 MAINTAINER imtnd RUN yum install -y httpd ADD index.html /var/www/html/index.html EXPOSE 80/tcp CMD ["/usr/sbin/httpd","-D","FOREGROUND"] ϕʔεͷDockerΠϝʔδ

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Dockerﬁle FROM centos:centos6 MAINTAINER imtnd RUN yum install -y httpd ADD index.html /var/www/html/index.html EXPOSE 80/tcp CMD ["/usr/sbin/httpd","-D","FOREGROUND"] DockerΠϝʔδ࡞੒ऀ

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Dockerﬁle FROM centos:centos6 MAINTAINER imtnd RUN yum install -y httpd ADD index.html /var/www/html/index.html EXPOSE 80/tcp CMD ["/usr/sbin/httpd","-D","FOREGROUND"] ίϚϯυͷ࣮ߦࢦࣔ

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Dockerﬁle FROM centos:centos6 MAINTAINER imtnd RUN yum install -y httpd ADD index.html /var/www/html/index.html EXPOSE 80/tcp CMD ["/usr/sbin/httpd","-D","FOREGROUND"] ϑΝΠϧͷ௥Ճࢦࣔ

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Dockerﬁle FROM centos:centos6 MAINTAINER imtnd RUN yum install -y httpd ADD index.html /var/www/html/index.html EXPOSE 80/tcp CMD ["/usr/sbin/httpd","-D","FOREGROUND"] ϙʔτ൪߸ͷొ࿥

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Dockerﬁle FROM centos:centos6 MAINTAINER imtnd RUN yum install -y httpd ADD index.html /var/www/html/index.html EXPOSE 80/tcp CMD ["/usr/sbin/httpd","-D","FOREGROUND"] ίϯςφىಈ࣌ͷ ࣮ߦίϚϯυࢦࣔ

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Docker Compose

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Docker Compose ίϯςφ͸αʔϏε୯ҐͰߏங͍ͯ͘͠ͱ؅ ཧָ͕ʹͳΔʢΞϓϦɺDBͳͲʣ αʔϏε͸ෳ਺ͷίϯςφʹΑͬͯߏங͞Ε Δ͜ͱʹͳΔͨΊҰׅͰ؅ཧ͢Δඞཁ͕͋Δ ෳ਺ͷίϯςϯΛ؅ཧग़དྷΔ࢓૊Έ͕ɺ Docker Compose

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Docker Compose Docker Compose͸ɺYMLϑΝΠϧͰίϯςφΛ؅ཧ ͢Δ YMLϑΝΠϧαϯϓϧ(TestLinkͱ͍͏αʔϏε͕ಈ͘) $git clone https://github.com/imtnd/testlink_yml.git ※ɹGit͕ͳ͍ਓ͸ϒϥ΢β͔Β௚઀ΞΫηε

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Docker Compose YMLϑΝΠϧΛݩʹαʔϏεΛىಈ ίϯςφͷঢ়ଶ֬ೝ $docker-compose up -d $docker-compose ps ԼهΞυϨεʹϒϥ΢β͔ΒΞΫηϧͰ͖Δ http://xxx.xxx.xxx.xxx(ϗετͷIPΞυϨε)/testlink/ ॳظઃఆͳͲ͸ԼهαΠτΛࢀর http://qiita.com/imtnd/items/a58a707db08c3710d963

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Docker Compose αʔϏεͷఀࢭ $docker-compose stop ҰίϚϯυͰɺMySQLɺTestLinkͷαʔϏε ͷίϯςφ͕ىಈͯ͠Δɻ busyboxͱ͍͏ͷ͸ɺσʔλΛӬଓԽ͢Δͨ Ίͷίϯςφ

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Docker Compose Docker hubʹ͋ΔΠϝʔδΛ࢖༻͢Δͱ໘౗ ͍͘͞ΠϯϑϥߏஙΛ͠ͳ͍Ͱɺ؀ڥΛηοτ Ξοϓ͢Δ͜ͱ͕Ͱ͖Δɻ ڵຯΛ࣋ͬͨπʔϧΛ؆୯ʹ࢖༻ͯ͠Έ͍ͨ࣌ ͳͲʹ࠷ద (πʔϧ໊)ɹdocker compose

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ͦͷଞπʔϧ Docker Swarm Docker Registory Kitematic

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ίϯςφؔ࿈αʔϏε tutum Kubernates

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࠷ޙʹ Docker ͸·ͩ·ͩ·ͩ·ͩൃల్தͳπʔ ϧͰ͢ɻ ͜ͷεϥΠυͷ৘ใ΋աڈͷ෺ʹͳ͍͖ͬͯ ·͢ɻ ൃల్தͰ͋Δ͕ނʹɺ࠷৽ಈ޲Λ௥ͬͯΈ Δͱ໘ന͍ͱࢥ͍·͢ɻ

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Let’s Run Container