dogvscat (Work In Progress)

This repo gives a few examples of patterns for how you might build Docker Swarm clusters with all the bells and whistles.

A Docker Swarm cluster needs more then just your app running, it often needs at least these additional services:

• Layer 7 Reverse Proxy (to host multiple HTTP sites on one port)
• Swarm-aware storage for data persistance
• Centralized logging of your app containers
• Centralized monitoring of nodes and containers
• Cluster management GUI
• Continuous deployment of updated images

This demo is meant for you to git clone and run locally to help you learn the tools and methods for building a complete Docker Swarm cluster.

Getting Started

This repo holds two deployment examples for Docker Swarm

• Docker Swarm CE (Community Edition) open source stack
• Docker Swarm EE (Enterprise Edition) stack

The EE stack requires at least a trial license to deploy.

Deploying the Swarm CE Example

You can do all this locally on a single node or optionally using Docker Machine to multi-node clusters.

Step 1: Set needed environment variables

The scripts and compose/stack files use variables to make this demo easier to get started. Set these at your shell before running commands

TODO: add envs

Step 2: (single node local Swarm)

Just have Docker installed, either via Docker for Windows/Mac or on Linux. See my YouTube videos on the proper way to setup your OS for Docker using downloads from store.docker.com.

Then just create a single-node Swarm in that engine:

docker swarm init

Step 2: (multi-node docker-machine Swarm)

./create-servers.sh gives example docker-machine commands for creating 3 nodes in various VM environments including locally with VirtualBox, Hyper-V, and in the cloud using Digital Ocean.

Step 3: Enable Docker Engine Metrics

Step 4: Initialize Swarm and Join Nodes

Step 5: Enable Persistent Storage with REX-Ray

Step 6: Deploy Reverse Proxy using Traefik

Step 7: Deploy Ops Tools: ELK, Prometheus, and Portainer

Step 8: Deploy sample apps and test

Deploying the Swarm EE Example

TODO