This repo includes automation scripts for Digital Ocean's tutorial on How To Use Confd and Etcd to Dynamically Reconfigure Services in CoreOS

Quick Start

image build

Existing images of unicell/confd-etcd-demo-web and unicell/confd-etcd-demo-nginx-lb can be found in Docker Hub Registry. If to build ones own, please be sure to update references inside templates/[email protected] and static/nginx-lb.service.

$ docker build -t unicell/confd-etcd-demo-web docker-web
$ docker push unicell/confd-etcd-demo-web
$ docker build -t unicell/confd-etcd-demo-nginx-lb docker-nginx-lb
$ docker push unicell/confd-etcd-demo-nginx-lb

CoreOS launch

Provide Digital Ocean token and register etcd discovery token.

$ . environments.sh

Update your ssh key reference in boot_coreos.sh before booting instances.

$ ./boot_coreos.sh coreos-02
$ ./boot_coreos.sh coreos-02

Services startup

Inside CoreOS instance

$ ssh core@<CoreOS instance IP>
$ cd && git clone https://github.com/unicell/confd-etcd-demo.git
$ fleetctl start ~/confd-etcd-demo/instances/*
$ fleetctl start ~/confd-etcd-demo/static/nginx-lb.service

Shining moment

From anywhere

$ curl http://<Public IP of nginx-lb service>:80

From one of your CoreOS instances

$ fleetctl journal -f nginx-lb.service