Deploying ASP.Net Core apps in Docker Containers
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Learn how to deploy web applications developed using ASP.NET Core into Docker containers
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Deploying ASP.Net Core apps in Docker Containers
- 4. Host OS - Hardware Hyper Visor Guest OS #2Guest OS #1 (Virtual Machine) Docker Daemon
- 5. App A Server Host OS Hypervisor Guest OS Guest OS Guest OS Bins/Lib s Bins/Lib s Bins/Lib s App A’ App B Server Host OS Docker Engine Bins/Libs Bins/Libs AppA AppA’ AppB AppB’ AppB AppB’ AppB AppB’ Containers are isolated, but share OS and, where appropriate, bins/libraries
- 9. DOCKER_HOST Images CacheContainers RegistryClient Docker pull Docker daemon Docker run Docker API Dot Net Dot Net Dot Net Dot Net
- 10. docker build Registry DOCKER_HOST ImagesContainers 0001Program.cs110 HelloWorld.dll 111010111011011010 Code/Binaries Client Docker build Docker daemon FROM microsoft/dotnet:1.0.0-rc2-core WORKDIR /app COPY /app /app ENTRYPOINT dotnet HelloWorld.dll dockerfile Private Registry Docker run Docker push
- 11. Docker Compose Private Registry Multi Service API Multi Service DOCKER_HOST ImagesContainers Registry Client Docker-compose Docker daemon version: '2' services: multiservice: image: - multiservice:latest environment: - CustomerAPIService=http://webapi/api/Customer ports: - "80:80" depends_on: - webapi webapi: image: - multiserviceapi:latest Docker-compose.yml Dot Net Multi Service Multi Service API front end api Multi Service Multi Service API
- 12. Host OS Networking DOCKER_HOST Container1 Docker daemon docker0: 192.168.1.100 :80 :8001 :8002 :8003 eth0: 172.17.0.2 Container2 eth0: 172.17.0.3 Container3 eth0: 172.17.0.4 Container4 eth0: 172.17.0.5 eth0: 10.100.2.100 veth5998974veth473629a veth2726149bveth736321c Docker Networking uses NAT to route inbound traffic to each container Each container can use the same port, internal to it’s container, but must be addressable outside by unique ports per HOST Load Balancers and Service Discovery are new important topics Note: networking may vary based on your orchestration engine
Editor's Notes
- Companies are adopting Docker at a remarkable rate Already moving their applications from VM to containers Containers are multiple isolated Linux instances running on a single host VM’s virtualizes the server hardware where as containers virtualizes the guest os That means the footprint of your container will be small and don’t need to worry about Each and every application comes in different sizes and with a lot of settings. So packaging it and distributing it may lead to some headaches
- Containers running on a single machine, share same os kernel Powering up is fast, Images are constructed as layered filesystems, so they can share common files between images itself there by reducing disk usage and image downloads becomes more efficient Based on open standards, allows to run on all major Linux distros and Windows itself Apps in container are isolated from each other and underlying infrastructure
- Host - A VM running the Docker Daemon to host a collection of Docker Containers Image - An ordered collection of filesystems* to be used when instancing a container Container - A runtime instance of an image Registry - A collection of docker images Dockerfile - Commands to build a Docker image Tag - A version identifier for an image, plus the registry name [docker tag [registrypath]/image:[version]]
- Host - A VM running the Docker Daemon to host a collection of Docker Containers Image - An ordered collection of filesystems* to be used when instancing a container Container - A runtime instance of an image Registry - A collection of docker images Dockerfile - Commands to build a Docker image Tag - A version identifier for an image, plus the registry name [docker tag [registrypath]/image:[version]]