getting-started-with-deimos

To get started with Docker/Marathon/Mesos, you need to install a
new Mesos, a new Marathon, and Deimos, the bridge to Docker.
You'll also need Docker and the JVM. These instructions are for
Ubuntu 13.10.

 ## Install Mesos prerequisites
 :; sudo apt-get update
 :; sudo apt-get install zookeeperd default-jre python-setuptools python-protobuf curl pip

 ## Install recent Mesos
 :; curl -fL http://downloads.mesosphere.io/master/ubuntu/14.04/mesos_0.19.0~ubuntu14.04%2B1_amd64.deb -o /tmp/mesos.deb
 :; sudo dpkg -i /tmp/mesos.deb

 ## Install the updated Mesos Python egg, for use in authoring frameworks
 :; curl -fL http://downloads.mesosphere.io/master/ubuntu/14.04/mesos-0.19.0_rc2-py2.7-linux-x86_64.egg -o /tmp/mesos.egg
 :; sudo easy_install /tmp/mesos.egg

 ## Install Deimos
 :; sudo pip install deimos

 ## Install the Marathon Deb package, built from this branch:
 ##   https://github.com/mesosphere/marathon/tree/wip-container-info
 :; curl -fL http://downloads.mesosphere.io/marathon/marathon_0.5.0-xcon2_noarch.deb -o /tmp/marathon.deb
 :; sudo dpkg -i /tmp/marathon.deb

To configure Mesos to use Deimos, you need to set the contents
of two files:

 :; sudo mkdir -p /etc/mesos-slave
 :; echo /usr/local/bin/deimos | sudo dd of=/etc/mesos-slave/containerizer_path
 :; echo external              | sudo dd of=/etc/mesos-slave/isolation

Installing Docker is documented on the Docker site. Here's one way:

 ## Install Docker
 :; sudo apt-get install linux-image-extra-"$(uname -r)"
 :; sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
 :; echo 'deb http://get.docker.io/ubuntu docker main' | sudo dd of=/etc/apt/sources.list.d/docker.list
 :; sudo apt-get update
 :; sudo apt-get install lxc-docker
 
It might be helpful to pre-cache the `libmesos` Docker image,
used for custom executors:

 :; sudo docker pull libmesos/ubuntu:13.10

At this point, you should take measures to ensure all services
have started (or restarted). A reboot would be easiest.

To test that it seems to be working, try the Deimos integration
tests:

 ## If "$eth0_ip" does not work, try "$(hostname)"
 :; git clone https://github.com/mesosphere/deimos.git
 :; ./deimos/integration-test/test-suite "$eth0_ip":5050

For the record, after upgrading mesos to 0.19.0~ubuntu14.04+1 I no longer see the error above, but the integration test suite still fails. test_sleep and test_pg complete successfully, but test_executor does not.
Relevant (AFAICT) part from syslog:

Jun 24 00:34:24 arnica deimos[11454]: deimos.containerizer.launch() exit 0 // docker run --sig-proxy --rm --cidfile /tmp/deimos/mesos/8894519c-5502-4896-91a5-e922d2bb233e/cid -w /tmp/mesos-sandbox -v /tmp/deimos/
mesos/8894519c-5502-4896-91a5-e922d2bb233e/fs:/tmp/mesos-sandbox -c 512 -m 256m -e MESOS_SLAVE_ID=20140622-220149-16842879-5050-2145-0 -e 'MESOS_SLAVE_PID=slave(1)@127.0.1.1:5051' -e MESOS_FRAMEWORK_ID=20140623-2
14413-16842879-5050-30986-0003 -e MESOS_EXECUTOR_ID=deimos-test.6d1ee724.executor -e MESOS_CHECKPOINT=0 -e MESOS_DIRECTORY=/tmp/mesos-sandbox libmesos/ubuntu sh -c 'python deimos-test.py --executor'
Jun 24 00:34:24 arnica mesos-slave[2146]: E0624 00:34:24.497194  2197 slave.cpp:2397] Termination of executor 'deimos-test.6d1ee724.executor' of framework '20140623-214413-16842879-5050-30986-0003' failed: External containerizer failed (status: 137)
Jun 24 00:34:24 arnica mesos-slave[2146]: I0624 00:34:24.500880  2197 slave.cpp:2018] Handling status update TASK_LOST (UUID: c801d07f-36f3-49fd-84ea-e2103e2694a5) for task deimos-test.6d1ee724.task-00 of framework 20140623-214413-16842879-5050-30986-0003 from @0.0.0.0:0

Hmm, @rkrzewski I'm also getting the same struct.unpack + expectex/received bytes error.

I guess I also don't have my demios+mesos+marathon versions right?

Wow, a year later and google pointed me here here for some other error message.

If there are any other archaeologists finding this thread, if possible you should upgrade >= mesos 0.20 which has native docker containerization and no longer requires deimos as an executor.