Microservices Architecture and Containers.
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This document discusses microservices architecture and how containers can help solve problems with monolithic architectures. It describes how microservices break applications into independent, scalable services that communicate over standard protocols. Containers provide standardized, isolated environments for microservices. Using containers for microservices allows for easier deployment and management of distributed applications across infrastructure.
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Docker for the enterprise
A presentation about container technology for the enterprise held at Ekito's geek breakfast the 4th of November 2016.
Cont0519
Docker Containers and K8S introduction.
Including basic hands on with GCP
(also discussed: micro-services, Swarm, Docker Hub, etc.)
Similar to Microservices Architecture and Containers. (20)
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Demystifying Containerization Principles for Data Scientists
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Microservices Architecture and Containers.
- 1. Microservices Architecture and Containers. Jacob Clark (@imjacobclark)
- 2. Monolithic architectures ● Fundamental components are interwoven ● Typically composed of Client, Server & Database ● Examples being WordPress, Jenkins, GitLab ● Changes mean complete compilation/redeploy ● Difficult to scale ● Generally easier to build ● Generally easier to deploy
- 3. Posts Content Users Plugins DashboardThemes WordPress HTTP Server MySQL
- 5. Microservices architectures ● An application built as a suite of small services ● Standalone, scalable & distributed ● Communicate over a standard protocol (REST, message queues) ● Programmatically react to failures ● Evolutionary architecture principle (don't microservice all the things...) ● Improved automation and delivery ● Not tied to a single language or framework
- 6. Client Comments Content Plugins Dashboard Themes Posts HTTP Server (Loadbalancing) json json json octet stream json html html Themes Themes Plugins Plugins Comments Comments Posts Posts DB adaptor json
- 7. The problem ● omg boxes??? ● Horrendous deployment times ● Maintaining large infrastructure ● A simple architecture now hugely complicated ● Cost is exponential ● Monitoring?? ● Does my cloud provider even support programmatic provisioning??
- 8. The solution... containers! ● Applications and their dependencies only (not an entire OS) ● Single kernel opposed to multikernel ● Built into the foundations of Unix (LXC, etc) ● Run as an isolated processes in userspace ● Resources are isolated from the host and other containers (much like Virtualisation) ● Consistent, portable and packageable environments by default (no need for Vagrant or Packer)
- 9. Putting them together... ● Microservices inside containers make for easy to distribute services ● Developers can build on identical and consistent environments ● Containers can be hosted on private repositories, making individual service deployment faster (dependencies aren't pulled from third party mirrors) ● Deployment build jobs are considerably smaller
- 10. ClientDashboard Themes Plugins Comments Posts DB adaptor Database Host 02 Themes Plugins CommentsPosts DB adaptor Host 03 Themes Plugins CommentsPosts DB adaptor Host 04 Host 01 HTTP Load Balancer Host 05 Content
- 11. Docker ● It’s creating a container standard (libcontainer) ● Cross-platform thanks to Microsoft Azure ● 75’000+ pre-built `Dockerized` applications, including Ubuntu, MongoDB & Node. ● Backed by eBay, Spotify, Rackspace, New Relic and more
- 12. Dockerising a Node app... server.js package.json Dockerfile docker build -t bbc-example-app . docker run -t -i -p 1337:1337 bbc-example-app
- 13. CoreOS ● OS designed for launching containers ● Built for clustering ● Built in service discovery with automatic failover ● Docker by default ● Backed by Google, Rackspace, Cisco and Mozilla
- 14. ● Fleet for centralised service management of an entire cluster ● Systemd for cluster service management ● Etcd service discovery via a cluster distributed key-value store ● Confd for dynamic configuration reloading ● https://github.com/imjacobclark/devnews-coreos Scaling Node on CoreOS
- 15. kthxbi