Docker swarm

TOPICS

• Container Orchestration

• Docker Swarm Intro

• Key Concepts

Features

orchestrators

swarm

• Native Docker Orchestration Engine

• May become a norm in future 

• Compatible with Docker Compose

• Integrated with Docker Engine and CLI

KEY CONCEPTS

• Architecture

• Services
  

• Scheduling 

• Networking

• Load Balancing 

• Fault Tolerance 

• Zero Downtime Deployment

services

• Unit of deployment

• One or more containers

• Global or Replicated
  

replicated

global

• one per node

• useful to setup monitoring, logging agents etc.

scheduling

node1

node2

node3

• resource aware

• spreads by default

• placement constraints can be defined

 deploy:
      placement:
        constraints:
          - node.role == worker
          - node.labels.env = staging
          - node.hostname != node-2
          - engine.labels.os == opensuse

placement constraints

networking

node1

node2

node3

load balancing

node1

node2

node3

fault tolerance

node1

node2

node3

fault tolerance

node1

node3