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AWS ECS の説明 /aws-ecs-introduction
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yutachaos
October 01, 2018
Technology
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76
AWS ECS の説明 /aws-ecs-introduction
サポーターズ下記勉強会用資料
https://supporterzcolab.com/event/522/
yutachaos
October 01, 2018
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Transcript
AWS ECS
ࣗݾհ • ଜ༐ଠ • SREΤϯδχΞ • ϓϩάϥϛϯάݴޠ • Java, node,
PHP, Ruby, Go • ීஈAWSΛར༻ͨ͠γεςϜͷӡ༻ɺӡ༻վળͱ͔ͬͯ·͢ɻ • ࠷ۙEnvoyΛ͍ͬͯ͡·ͨ͠ɻ • AWS Certificated Solutions Architect • AWS Certificated DepOps Engineer
Agenda • Containerٕज़ʹ͍ͭͯͷ͓͞Β͍ • ECSʹ͍ͭͯ • ECSͷ֓೦ʹ͍ͭͯ
ContainerͬͯԿʁ
• ߓʹ͋ΔΞϨ • Container ʹ DockerͰͳ͍ɻ • DockerίϯςφܕԾԽͷ࣮ͷҰͭ • DockerΧʔωϧͱcgroupsͳͲͷٕज़Λ
Έ߹ΘͤͯɺΞϓϦέʔγϣϯͱϥϯλΠϜ ࣮ߦڥΛ·ͱΊͯ͢Δٕज़ • ίϯςφϓϩηε ͬ͘͟Γͱͨ͠ղઆ
• ΞϓϦέʔγϣϯͱ࣮ߦڥΛҰͭʹ·ͱΊ Δ͜ͱͰ։ൃͱӡ༻νʔϜ͕εϜʔζʹӡ༻ ग़དྷΔ • e.g. ϩʔΧϧͱຊ൪Ͱಉ͡Dockerfile͑ Δ!ɺΠϯϑϥνʔϜ͕Dockerfile࡞ͬͯɺ ։ൃνʔϜʹͤΔʂٯ·ͨવΓ Կ͕ྑ͍ͷʁ
• Elastic Container Serviceͷུ • AWS͕ఏڙ͢ΔίϯςφΦʔέετϨʔ γϣϯπʔϧ • e.g. kubernates,
docker swarmͱ͔ • Docker͚ͩͰग़དྷͳ͍ίϯςφͷ Scaling, ஔ, ཧΛߦ͏αʔϏε ECSʹ͍ͭͯ
ECS overview EC2 Launch type
• ECR • Elastic Container RegistryͷུɺAWS্ͰϚωʔδυʹ ӡ༻͞ΕΔɺDocker imageΛอଘ͢ΔRegistry • Cluster
• Container͕࣮ࡍʹ࣮ߦ͞ΕΔEC2Πϯελϯεͷू߹ ମ • Service • Task definitionΛͱʹͯ͠࡞͞ΕͨTaskΛ͍ͭ͘ى ಈ͢Δ͔ɺͲͷΑ͏ʹஔ͢Δͷ͔ɺͲͷϩʔυόϥϯ αʔܦ༝Ͱ௨৴͢Δ͔ͷઃఆɻTask definitionͱ1:1Ͱ ઃఆ͢Δ ༻ޠ1
• Task definition • Containerͷ࣮ߦ͢Δܗ • Task • Task definitionΛͱʹͯ͠࡞͞Εͨ
Containerͷ࣮ଶ ༻ޠ2
Task Definitionʹ͍ͭͯ • ECS্Ͱ࣮ߦ͢ΔContainerͷઃఆ • EC2ͱFargateλΠϓ͕͋Δ • ࣮ߦͤ͞Δcontainerͷimage,ར༻͢Δ ڥมɺportͷઃఆͳͲΛߦ͏
Serviceʹ͍ͭͯ • ECS্Ͱ࣮ߦ͢ΔTaskʹ͍ͭͯͷ·ͱΊΔઃఆ • Containerͷಈ͔͢ɺInstanceͷTaskஔ ઓུ • Load balancerͷport mappingͳͲΛ୲͏ɻ
ECS agent • EC2্Ͱಈ͘ɺECSͷcontainerͷঢ়ଶΛѲ͢Δ agent • ͜ͷagentࣗମdockerͰEC2ͷதͰಈ͍͍ͯΔ • EC2 typeͷ߹ɺ͜ͷECS
agentΛEC2ىಈ࣌ʹಈ͘ Α͏ʹͯ͠Clusterʹొ͢Δ
Ϣʔεέʔε Rails appΛECSͰಈ͔͢߹ • Rails appͷimageΛઃఆͨ͠Task definitionΛ࡞ • Load balancerΛ͚ͭͨServiceΛ࡞͢Δ
Sample
ղઆ • Route53Λར༻ͯ͠domainΛઃఆ • ௨৴ALBܦ༝ͰContainerʹૹΔ • ApplicationContainerͰ࡞ɺECSͰε έʔϦϯάͷཧ
Fargate launch typeʹ͍ͭͯ • ECSʹ̎ͭͷlaunch type EC2 launch typeͱ Fargate
launch type͕͋Δɻ • EC2 launch typeContainerΛಈ͔ͨ͢ΊͷEC2Λ ཧ͢Δඞཁ͕͋Δ͕ɺFargate launch typeಈ͔ͨ͢ ΊͷEC2ͷresourceΛAWSଆͰཧͯ͘͠ΕΔɻ • ཧίετ͕ݮΔ • ݸਓతʹ·ͩಋೖͨ͜͠ͱͳ͍ɻ
ECS overview Fargate Launch type
͓ΘΓʹ • ECScluster্ͰserviceͰཧ͞Εͨ container͔ΒΔtaskΛtask definitionΛͱ ʹ࡞͠ɺӡ༻͢Δػೳ • ContainerΛຊ൪ӡ༻͢Δ͜ͱ։ൃɺӡ༻త ͳϦϨʔγϣϯʹʹཱͭ
༨ஊ
Modern Web appΛߟ͑Δͱ ͖ʹศརͳϖʔδ
Twelve-factor-app • https://12factor.net/ • ݩherokuͷ Adam Wiggins͕2011ʹॻ͍ ͨmodernͳSaaSΛ࡞ΔͨΊͷํ๏ • ࣮࣭ContainerΛར༻͢ΔappΛ࡞͢Δͱ
͖ͷํ๏ͷstandardͷҰͭ
Cloud Native landscape • https://landscape.cncf.io/ • CNCF(Cloud Native Computing Foundation)
͕ఏ͍ࣔͯ͠ΔɺCloud NativeͳΞϓϦέʔ γϣϯΛનΊ্͍ͯ͘ͰͷϩʔυϚοϓ
AWS ެࣜͷࢿྉ • ެࣜͷdoc • re:InventAWS Summit, Black beltͷεϥΠ υslideshareɺಈըyoutubeʹଟ্͘
͕͍ͬͯ·͢ɻ • ࠔͬͨΒެ͕ࣜҰ൪!
ྑ͍ Container lifeΛ!