Ryan Hallisey db16fd6b59 Network Isolation support for containerized compute

The template will all neutron-agents to be configured so that it can
run the network isolation templates on the containerized compute node.

Co-Authored-By: Dan Prince <dpince@redhat.com>
Change-Id: I7837ed7ed3e807ec5c1276904893695918bef293

2016-01-04 20:41:41 +00:00

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Using Docker Containers With TripleO

Configuring TripleO with to use a container based compute node.

Steps include:

Adding a base OS image to glance
Deploy an overcloud configured to use the docker compute heat templates

Getting base OS image working.

Download the fedora atomic image into glance:

wget https://download.fedoraproject.org/pub/fedora/linux/releases/22/Cloud/x86_64/Images/Fedora-Cloud-Atomic-22-20150521.x86_64.qcow2
glance image-create --name atomic-image --file Fedora-Cloud-Atomic-22-20150521.x86_64.qcow2 --disk-format qcow2 --container-format bare

Configuring TripleO

You can use the tripleo.sh script up until the point of running the Overcloud. https://github.com/openstack/tripleo-common/blob/master/scripts/tripleo.sh

Create the Overcloud:

$ openstack overcloud deploy --templates=tripleo-heat-templates -e tripleo-heat-templates/environments/docker.yaml -e tripleo-heat-templates/environments/docker-network.yaml --libvirt-type=qemu

Using Network Isolation in the Overcloud:

$ openstack overcloud deploy --templates=tripleo-heat-templates -e tripleo-heat-templates/environments/docker.yaml -e tripleo-heat-templates/environments/docker-network-isolation.yaml --libvirt-type=qemu

Source the overcloudrc and then you can use the overcloud.

Debugging

You can ssh into the controller/compute nodes by using the heat key, eg:

nova list
ssh heat-admin@<compute_node_ip>

You can check to see what docker containers are running:

sudo docker ps -a

To enter a container that doesn't seem to be working right:

sudo docker exec -ti <container name> /bin/bash

Then you can check logs etc.

You can also just do a 'docker logs' on a given container.

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