Docker Cookbook

10.3 ELB: Creating a Dynamic Load-Balancer with Confd and Registrator | 313

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$ git clone https://github.com/how2dock/dockbook.git
$ cd docbook/ch10/confd
$ vagrant up
$ vagrant ssh
You will have all the images downloaded and ready to go:
$ docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
progrium/consul latest e66fb6787628 10 days ago 69.43 MB
nginx latest 319d2015d149 3 weeks ago 132.8 MB
runseb/hostname latest 7c9d1ddd2ceb 3 months ago 349.3 MB
gliderlabs/registrator latest b1c29d1a74a9 4 months ago 11.79 MB
And the 
confd
configuration files will be already set in 
/etc/confd/conf.d/config.toml
and 
/etc/confd/templates/config.conf.tmp
.
Just start the containers:
$ docker run -d -p 8400:8400 -p 8500:8500 -p 8600:53/udp
-h cookbook progrium/consul -server
-bootstrap -ui-dir /ui
$ docker run -d -v /var/run/docker.sock:/tmp/docker.sock
-h 192.168.33.10 gliderlabs/registrator
-ip 192.168.33.10 consul://192.168.33.10:8500/elb
$ docker run -d -p 80:80 -v /home/vagrant/nginx.conf:/etc/nginx/nginx.conf
--name elb nginx
$ docker run -d -p 5001:5000 runseb/hostname
$ docker run -d -p 5002:5000 runseb/hostname
You can start those containers via Docker Compose (see 
Recipe
7.1
).
And run 
confd
:
$ ./confd -backend consul -interval 5 -node 192.168.33.10:8500
See Also
• Quick Start guide for 
confd
314 | Chapter 10: Application Use Cases

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10.4 DATA: Building an S3-Compatible Object Store with
Cassandra on Kubernetes
Problem
You would like to build your own 
S3-like
 object store.