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Upping your NiFi Game with Docker
The document discusses Docker, an open platform for building and running distributed applications, and outlines its components, such as images, containers, and volumes. It explains how Docker integrates with various operating systems and cloud services, highlighting tools like Docker Machine and Docker Compose for managing and orchestrating containers. Additionally, it includes links to relevant resources and references for further exploration of Docker and its applications in development environments.
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Upping your NiFi Game with Docker
- 1. 🐳+💧 UPPING YOUR NIFIGAME WITH DOCKER 29 OCTOBER 2015 Aldrin Piri @aldrinpiri
- 2. WHAT IS DOCKER? Aline of khakis, pants and casual clothing It’s an obscure open source project
- 3. WHAT IS DOCKER? “Dockeris an open platform for building, shipping and running distributed applications. It gives programmers, development teams and operations engineers the common toolbox they need to take advantage of the distributed and networked nature of modern applications.”
- 4. DOCKER IS AN ECOSYSTEM DockerHub https://hub.docker.com/ • A registry of available images Tooling • Linux provides a native experience • Windows & OS X make use of a VM and associated tools People and Organizations
- 5. GLOSSARY FOR THE TALK Image •Binary representation of a filesystem Container • Instance of an image Copy on Write • Images are untouched until changes are needed, at which point a new copy is created Volumes • Bridge the external host world into the container
- 6. ENVIRONMENT OS X 10.10 DockerToolbox • https://www.docker.com/docker-toolbox Docker, Docker Machine, & Docker Compose
- 7. DOCKER-MACHINE Provisions Docker environments •Locally: Native Docker daemon, VirtualBox • Cloud: Amazon EC2, Azure, DigitalOcean… Establishes command line for communicating with instances
- 8. DOCKER • Run imagesto create containers • The lifespan of a container is tied to the process that originates it • Defaults specified via ENTRYPOINT or CMD • Specify arguments on run inclusive of providing • Volumes • Links to other running containers (unidirectional network mappings via an alias) • Environment variables • Exposed Ports • Alternate ENTRYPOINT/CMD • If an image is present, it will attempt to be pulled from the Docker Hub and locally cached
- 9. OUR BASE DOCKER IMAGE aldrin/apache-nifi •Docker Hub • https://hub.docker.com/r/aldrin/apache-nifi/ • Source • https://github.com/apiri/dockerfile-apache-nifi
- 10. WHERE DOES ITALL COME FROM? Dockerfile is our source code
- 11. WHERE DOES ITALL COME FROM? An image is our compiled binary
- 12. DOCKER FOR DEVELOPING Volumes allowmapping libraries directly into the environment Links allow interacting with services at defined aliases
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- 14. DOCKER NETWORK Docker’s libnetworkmakes great strides in increasing the networking model • Service Discovery • Pluggable drivers Unfortunately, it has not been released • Coming soon: ~1.9.0 There are a few ways to handle this with the current release inclusive of running a DNS server/service discovery, but we are going a simple route for ease.
- 15. ENTER AMBASSADORS Provides service/container portabilityas links are hardcoded Manager Node Manager Ambassador Node Ambassador
- 16. INTRODUCING DOCKER COMPOSE • Originallya project called fig • Provides the definition and running of multi-container applications • YAML descriptor files • docker-compose drives controlling the application
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- 18. RESOURCES Docker • https://www.docker.com/ Visualizing DockerContainers and Images • http://merrigrove.blogspot.com/2015/10/visualizing-docker-containers- and-images.html Jess Frazelle - Dockerize everything • Container Hacks and Fun Images Presentation • https://www.youtube.com/watch?v=1qlLUf7KtAw • https://github.com/jfrazelle Source Code and “Script” • https://github.com/apiri/docker-with-nifi
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