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"
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
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.
