Docker Cookbook

196 | Chapter 7: The Docker Ecosystem: Tools

---

---------------------------------------------------------------------------------
vagrant_mysql_1 /entrypoint.sh mysqld Up 3306/tcp
vagrant_wordpress_1 /entrypoint.sh apache2-for ... Up 0.0.0.0:80->80/tcp
7.2 Using Docker Compose to Test Apache Mesos and
Marathon on Docker
Problem
You are interested in 
Apache Mesos
, the data center resource-allocation system used
by companies like Twitter. Mesos allows multilevel scheduling to share resources
between different types of workloads while maximizing utilization of your servers.
Before going into production with Mesos, you would like to experiment with it on a
single server.
Solution
With Docker Compose (seen in 
Recipe 7.1
), deploying Mesos on a single Docker host
with one command is straightforward.
You need to start four containers: one for 
ZooKeeper
, one for the Mesos master, one
for the Mesos slave, and one for the Mesos framework 
Marathon
. Starting these four
containers can be simplified by describing their start-up options in a YAML file that
is read by Compose. Here is a sample YAML manifest to deploy Mesos using Com‐
pose:
zookeeper:
image: garland/zookeeper
ports:
- 
"2181:2181"
- 
"2888:2888"
- 
"3888:3888"
mesosmaster:
image: garland/mesosphere-docker-mesos-master
ports:
- 
"5050:5050"
links:
- zookeeper:zk
environment:
- MESOS_ZK=zk://zk:2181/mesos
- MESOS_LOG_DIR=/var/log/mesos
- MESOS_QUORUM=1
- MESOS_REGISTRY=in_memory
- MESOS_WORK_DIR=/var/lib/mesos
marathon:
image: garland/mesosphere-docker-marathon
links:
- zookeeper:zk