Docker Containers Orchestration
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This document discusses different approaches to orchestrating Docker containers, including composition tools like Docker Compose and Fig, schedulers like Mesos and Kubernetes, and PaaS platforms. It notes that Docker Compose works well for development but has limitations for production. Mesos is introduced as an Apache project that abstracts resources away from machines, enabling fault-tolerant and elastic distributed systems. Key aspects of Mesos include its architecture with masters and slaves, the use of resource offers, and frameworks like Marathon for deploying apps.
Docker Containers Orchestration
- 1. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 1/16 Docker Containers Orchestration Dmitry Fedorov
- 2. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 2/16 Itroduction Dmitry Fedorov Wargaming.net web DevOps Deploying, maintaining, breaking things
- 3. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 4/16 Orchestration? Classification: - Something that works from files - Something with API - PaaS Naaaah! Classification: *(retry) - Composition: docker-compose (a.k.a fig), Maestro-ng... - Scheduling: Mesos, Kubernetes... - PaaS: Flyyn, Deis... - Configuration Management System: Ansible, Puppet, Chef ... + Foreman
- 4. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 5/16 Composition Combine simple objects into more complex ones
- 5. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 6/16 Docker Compose Structure description: json ( Oh, please, no! ) yaml ( Good try, but no ) what else ... CMDB? Complaints: Complex dependencies do not work. Please, stop being just wrappers around docker cli! Please, stop trying to be configuration management! Summary: Works for cosy developers environment: Single Host Only (Do not tell me about docker-swarm)
- 6. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 7/16 Schedulers Distribution makes things harder A bit of history: Monolithic Resource offer concept Google Omega: optimistic offers Mesos: Pretty good Kubernetes: Work in progres
- 7. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 8/16 PaaS Questions: Network (no working decision) Storages (if network was not enougth for you) Backups Metrics Logging Quote: Stack - is a new term for "I don't know how this thing works"
- 8. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 9/16 Orchestration
- 9. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 10/16 Mesos Apache Mesos abstracts CPU, memory, storage, and other compute resources away from machines (physical or virtual), enabling fault-tolerant and elastic distributed systems to easily be built and run effectively. Fault Tolerant Scalable High Utilisation
- 10. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 11/16 Architecture
- 11. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 12/16 Offer
- 12. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 13/16 Marathon does it! Start, stop, scale, update, view apps Placement constraits Health checks
- 13. 4/4/2015 Docker Containers Orchestration http://127.0.0.1:3999/orchesration.slide#1 14/16 Questions? All above is a personal author oppinion and not an official Wargaming.net position... and also could be an absolute crap.