@@ -12,10 +12,14 @@ Read more at http://devstack.org (built from the gh-pages branch)

 IMPORTANT: Be sure to carefully read `stack.sh` and any other scripts you execute before you run them, as they install software and may alter your networking configuration.  We strongly recommend that you run `stack.sh` in a clean and disposable vm when you are first getting started.

-# Devstack on Xenserver

+# DevStack on Xenserver

 If you would like to use Xenserver as the hypervisor, please refer to the instructions in `./tools/xen/README.md`.

+# DevStack on Docker

+

+If you would like to use Docker as the hypervisor, please refer to the instructions in `./tools/docker/README.md`.

+

 # Versions

 The devstack master branch generally points to trunk versions of OpenStack components.  For older, stable versions, look for branches named stable/[release] in the DevStack repo.  For example, you can do the following to create a diablo OpenStack cloud:

@@ -64,6 +64,11 @@ cleanup_nova

 cleanup_neutron

 cleanup_swift

+# Do the hypervisor cleanup until this can be moved back into lib/nova

+if [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+    cleanup_nova_hypervisor

+fi

+

 # cinder doesn't always clean up the volume group as it might be used elsewhere...

 # clean it up if it is a loop device

 VG_DEV=$(sudo losetup -j $DATA_DIR/${VOLUME_GROUP}-backing-file | awk -F':' '/backing-file/ { print $1}')

@@ -44,6 +44,9 @@ source $TOP_DIR/exerciserc

 # the exercise is skipped

 is_service_enabled cinder || exit 55

+# Also skip if the hypervisor is Docker

+[[ "$VIRT_DRIVER" == "docker" ]] && exit 55

+

 # Instance type to create

 DEFAULT_INSTANCE_TYPE=${DEFAULT_INSTANCE_TYPE:-m1.tiny}

new file mode 100755

@@ -0,0 +1,105 @@

+#!/usr/bin/env bash

+

+# **docker**

+

+# Test Docker hypervisor

+

+echo "*********************************************************************"

+echo "Begin DevStack Exercise: $0"

+echo "*********************************************************************"

+

+# This script exits on an error so that errors don't compound and you see

+# only the first error that occurred.

+set -o errexit

+

+# Print the commands being run so that we can see the command that triggers

+# an error.  It is also useful for following allowing as the install occurs.

+set -o xtrace

+

+

+# Settings

+# ========

+

+# Keep track of the current directory

+EXERCISE_DIR=$(cd $(dirname "$0") && pwd)

+TOP_DIR=$(cd $EXERCISE_DIR/..; pwd)

+

+# Import common functions

+source $TOP_DIR/functions

+

+# Import configuration

+source $TOP_DIR/openrc

+

+# Import exercise configuration

+source $TOP_DIR/exerciserc

+

+# Skip if the hypervisor is not Docker

+[[ "$VIRT_DRIVER" == "docker" ]] || exit 55

+

+# Import docker functions and declarations

+source $TOP_DIR/lib/nova_plugins/hypervisor-docker

+

+# Image and flavor are ignored but the CLI requires them...

+

+# Instance type to create

+DEFAULT_INSTANCE_TYPE=${DEFAULT_INSTANCE_TYPE:-m1.tiny}

+

+# Boot this image, use first AMI image if unset

+DEFAULT_IMAGE_NAME=${DEFAULT_IMAGE_NAME:-ami}

+

+# Instance name

+VM_NAME=ex-docker

+

+

+# Launching a server

+# ==================

+

+# Grab the id of the image to launch

+IMAGE=$(glance image-list | egrep " $DOCKER_IMAGE_NAME:latest " | get_field 1)

+die_if_not_set $LINENO IMAGE "Failure getting image $DOCKER_IMAGE_NAME"

+

+# Select a flavor

+INSTANCE_TYPE=$(nova flavor-list | grep $DEFAULT_INSTANCE_TYPE | get_field 1)

+if [[ -z "$INSTANCE_TYPE" ]]; then

+    # grab the first flavor in the list to launch if default doesn't exist

+   INSTANCE_TYPE=$(nova flavor-list | head -n 4 | tail -n 1 | get_field 1)

+fi

+

+# Clean-up from previous runs

+nova delete $VM_NAME || true

+if ! timeout $ACTIVE_TIMEOUT sh -c "while nova show $VM_NAME; do sleep 1; done"; then

+    die $LINENO "server didn't terminate!"

+fi

+

+# Boot instance

+# -------------

+

+VM_UUID=$(nova boot --flavor $INSTANCE_TYPE --image $IMAGE $VM_NAME | grep ' id ' | get_field 2)

+die_if_not_set $LINENO VM_UUID "Failure launching $VM_NAME"

+

+# Check that the status is active within ACTIVE_TIMEOUT seconds

+if ! timeout $ACTIVE_TIMEOUT sh -c "while ! nova show $VM_UUID | grep status | grep -q ACTIVE; do sleep 1; done"; then

+    die $LINENO "server didn't become active!"

+fi

+

+# Get the instance IP

+IP=$(nova show $VM_UUID | grep "$PRIVATE_NETWORK_NAME" | get_field 2)

+die_if_not_set $LINENO IP "Failure retrieving IP address"

+

+# Private IPs can be pinged in single node deployments

+ping_check "$PRIVATE_NETWORK_NAME" $IP $BOOT_TIMEOUT

+

+# Clean up

+# --------

+

+# Delete instance

+nova delete $VM_UUID || die $LINENO "Failure deleting instance $VM_NAME"

+if ! timeout $TERMINATE_TIMEOUT sh -c "while nova list | grep -q $VM_UUID; do sleep 1; done"; then

+    die $LINENO "Server $VM_NAME not deleted"

+fi

+

+set +o xtrace

+echo "*********************************************************************"

+echo "SUCCESS: End DevStack Exercise: $0"

+echo "*********************************************************************"

+

@@ -41,6 +41,9 @@ fi

 # Import exercise configuration

 source $TOP_DIR/exerciserc

+# Skip if the hypervisor is Docker

+[[ "$VIRT_DRIVER" == "docker" ]] && exit 55

+

 # Instance type to create

 DEFAULT_INSTANCE_TYPE=${DEFAULT_INSTANCE_TYPE:-m1.tiny}

@@ -38,6 +38,9 @@ fi

 # Import exercise configuration

 source $TOP_DIR/exerciserc

+# Skip if the hypervisor is Docker

+[[ "$VIRT_DRIVER" == "docker" ]] && exit 55

+

 # Instance type to create

 DEFAULT_INSTANCE_TYPE=${DEFAULT_INSTANCE_TYPE:-m1.tiny}

@@ -33,6 +33,9 @@ source $TOP_DIR/openrc

 # Import exercise configuration

 source $TOP_DIR/exerciserc

+# Skip if the hypervisor is Docker

+[[ "$VIRT_DRIVER" == "docker" ]] && exit 55

+

 # Testing Security Groups

 # =======================

@@ -42,6 +42,9 @@ source $TOP_DIR/exerciserc

 # exercise is skipped.

 is_service_enabled cinder || exit 55

+# Also skip if the hypervisor is Docker

+[[ "$VIRT_DRIVER" == "docker" ]] && exit 55

+

 # Instance type to create

 DEFAULT_INSTANCE_TYPE=${DEFAULT_INSTANCE_TYPE:-m1.tiny}

@@ -169,6 +169,13 @@ function cleanup_nova() {

     fi

     sudo rm -rf $NOVA_STATE_PATH $NOVA_AUTH_CACHE_DIR

+

+    # NOTE(dtroyer): This really should be called from here but due to the way

+    #                nova abuses the _cleanup() function we're moving it

+    #                directly into cleanup.sh until this can be fixed.

+    #if is_service_enabled n-cpu && [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+    #    cleanup_nova_hypervisor

+    #fi

 }

 # configure_nova_rootwrap() - configure Nova's rootwrap

@@ -652,7 +659,9 @@ function install_novaclient() {

 # install_nova() - Collect source and prepare

 function install_nova() {

     if is_service_enabled n-cpu; then

-        if [[ "$VIRT_DRIVER" = 'libvirt' ]]; then

+        if [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+            install_nova_hypervisor

+        elif [[ "$VIRT_DRIVER" = 'libvirt' ]]; then

             if is_ubuntu; then

                 install_package kvm

                 install_package libvirt-bin

@@ -731,6 +740,9 @@ function start_nova() {

            screen_it n-cpu "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM"

        done

     else

+        if is_service_enabled n-cpu && [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+            start_nova_hypervisor

+        fi

         screen_it n-cpu "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM"

     fi

     screen_it n-crt "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-cert"

@@ -757,6 +769,9 @@ function stop_nova() {

     for serv in n-api n-cpu n-crt n-net n-sch n-novnc n-xvnc n-cauth n-spice n-cond n-cond n-cell n-cell n-api-meta; do

         screen -S $SCREEN_NAME -p $serv -X kill

     done

+    if is_service_enabled n-cpu && [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+        stop_nova_hypervisor

+    fi

 }

new file mode 100644

@@ -0,0 +1,132 @@

+# lib/nova_plugins/docker

+# Configure the Docker hypervisor

+

+# Enable with:

+# VIRT_DRIVER=docker

+

+# Dependencies:

+# ``functions`` file

+# ``nova`` and ``glance`` configurations

+

+# install_nova_hypervisor - install any external requirements

+# configure_nova_hypervisor - make configuration changes, including those to other services

+# start_nova_hypervisor - start any external services

+# stop_nova_hypervisor - stop any external services

+# cleanup_nova_hypervisor - remove transient data and cache

+

+# Save trace setting

+MY_XTRACE=$(set +o | grep xtrace)

+set +o xtrace

+

+

+# Defaults

+# --------

+

+# Set up default directories

+DOCKER_DIR=$DEST/docker

+DOCKER_REPO=${DOCKER_REPO:-https://github.com/dotcloud/openstack-docker.git}

+DOCKER_BRANCH=${DOCKER_BRANCH:-master}

+

+DOCKER_UNIX_SOCKET=/var/run/docker.sock

+DOCKER_PID_FILE=/var/run/docker.pid

+DOCKER_REGISTRY_PORT=${DOCKER_REGISTRY_PORT:-5042}

+

+DOCKER_IMAGE=${DOCKER_IMAGE:-http://get.docker.io/images/openstack/docker-ut.tar.gz}

+DOCKER_IMAGE_NAME=docker-busybox

+DOCKER_REGISTRY_IMAGE=${DOCKER_REGISTRY_IMAGE:-http://get.docker.io/images/openstack/docker-registry.tar.gz}

+DOCKER_REGISTRY_IMAGE_NAME=docker-registry

+DOCKER_REPOSITORY_NAME=${SERVICE_HOST}:${DOCKER_REGISTRY_PORT}/${DOCKER_IMAGE_NAME}

+

+DOCKER_PACKAGE_VERSION=${DOCKER_PACKAGE_VERSION:-0.6.1}

+DOCKER_APT_REPO=${DOCKER_APT_REPO:-https://get.docker.io/ubuntu}

+

+

+# Entry Points

+# ------------

+

+# clean_nova_hypervisor - Clean up an installation

+function cleanup_nova_hypervisor() {

+    stop_service docker

+

+    # Clean out work area

+    sudo rm -rf /var/lib/docker

+}

+

+# configure_nova_hypervisor - Set config files, create data dirs, etc

+function configure_nova_hypervisor() {

+    git_clone $DOCKER_REPO $DOCKER_DIR $DOCKER_BRANCH

+

+    ln -snf ${DOCKER_DIR}/nova-driver $NOVA_DIR/nova/virt/docker

+

+    iniset $NOVA_CONF DEFAULT compute_driver docker.DockerDriver

+    iniset $GLANCE_API_CONF DEFAULT container_formats ami,ari,aki,bare,ovf,docker

+

+    sudo cp -p ${DOCKER_DIR}/nova-driver/docker.filters $NOVA_CONF_DIR/rootwrap.d

+}

+

+# install_nova_hypervisor() - Install external components

+function install_nova_hypervisor() {

+    # So far this is Ubuntu only

+    if ! is_ubuntu; then

+        die $LINENO "Docker is only supported on Ubuntu at this time"

+    fi

+

+    # Make sure Docker is installed

+    if ! is_package_installed lxc-docker; then

+        die $LINENO "Docker is not installed.  Please run tools/docker/install_docker.sh"

+    fi

+

+    local docker_pid

+    read docker_pid <$DOCKER_PID_FILE

+    if [[ -z $docker_pid ]] || ! ps -p $docker_pid | grep [d]ocker; then

+        die $LINENO "Docker not running"

+    fi

+}

+

+# start_nova_hypervisor - Start any required external services

+function start_nova_hypervisor() {

+    local docker_pid

+    read docker_pid <$DOCKER_PID_FILE

+    if [[ -z $docker_pid ]] || ! ps -p $docker_pid | grep [d]ocker; then

+        die $LINENO "Docker not running, start the daemon"

+    fi

+

+    # Start the Docker registry container

+    docker run -d -p ${DOCKER_REGISTRY_PORT}:5000 \

+        -e SETTINGS_FLAVOR=openstack -e OS_USERNAME=${OS_USERNAME} \

+        -e OS_PASSWORD=${OS_PASSWORD} -e OS_TENANT_NAME=${OS_TENANT_NAME} \

+        -e OS_GLANCE_URL="${SERVICE_PROTOCOL}://${GLANCE_HOSTPORT}" \

+        -e OS_AUTH_URL=${OS_AUTH_URL} \

+        $DOCKER_REGISTRY_IMAGE_NAME ./docker-registry/run.sh

+

+    echo "Waiting for docker registry to start..."

+    DOCKER_REGISTRY=${SERVICE_HOST}:${DOCKER_REGISTRY_PORT}

+    if ! timeout $SERVICE_TIMEOUT sh -c "while ! curl -s $DOCKER_REGISTRY; do sleep 1; done"; then

+        die $LINENO "docker-registry did not start"

+    fi

+

+    # Tag image if not already tagged

+    if ! docker images | grep $DOCKER_REPOSITORY_NAME; then

+        docker tag $DOCKER_IMAGE_NAME $DOCKER_REPOSITORY_NAME

+    fi

+

+    # Make sure we copied the image in Glance

+    DOCKER_IMAGE=$(glance image-list | egrep " $DOCKER_IMAGE_NAME ")

+    if ! is_set DOCKER_IMAGE ; then

+        docker push $DOCKER_REPOSITORY_NAME

+    fi

+}

+

+# stop_nova_hypervisor - Stop any external services

+function stop_nova_hypervisor() {

+    # Stop the docker registry container

+    docker kill $(docker ps | grep docker-registry | cut -d' ' -f1)

+}

+

+

+# Restore xtrace

+$MY_XTRACE

+

+# Local variables:

+# mode: shell-script

+# End:

@@ -319,6 +319,13 @@ source $TOP_DIR/lib/neutron

 source $TOP_DIR/lib/baremetal

 source $TOP_DIR/lib/ldap

+# Look for Nova hypervisor plugin

+NOVA_PLUGINS=$TOP_DIR/lib/nova_plugins

+if is_service_enabled nova && [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+    # Load plugin

+    source $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER

+fi

+

 # Set the destination directories for other OpenStack projects

 OPENSTACKCLIENT_DIR=$DEST/python-openstackclient

@@ -1013,6 +1020,10 @@ if is_service_enabled cinder; then

     init_cinder

 fi

+

+# Compute Service

+# ---------------

+

 if is_service_enabled nova; then

     echo_summary "Configuring Nova"

     # Rebuild the config file from scratch

@@ -1027,10 +1038,15 @@ if is_service_enabled nova; then

     fi

+    if [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+        # Configure hypervisor plugin

+        configure_nova_hypervisor

+

+

     # XenServer

     # ---------

-    if [ "$VIRT_DRIVER" = 'xenserver' ]; then

+    elif [ "$VIRT_DRIVER" = 'xenserver' ]; then

         echo_summary "Using XenServer virtualization driver"

         if [ -z "$XENAPI_CONNECTION_URL" ]; then

             die $LINENO "XENAPI_CONNECTION_URL is not specified"

new file mode 100644

@@ -0,0 +1,13 @@

+# DevStack on Docker

+

+Using Docker as Nova's hypervisor requries two steps:

+

+* Configure DevStack by adding the following to `localrc`::

+

+    VIRT_DRIVER=docker

+

+* Download and install the Docker service and images::

+

+    tools/docker/install_docker.sh

+

+After this, `stack.sh` should run as normal.

new file mode 100755

@@ -0,0 +1,75 @@

+#!/usr/bin/env bash

+

+# **install_docker.sh** - Do the initial Docker installation and configuration

+

+# install_docker.sh

+#

+# Install docker package and images

+# * downloads a base busybox image and a glance registry image if necessary

+# * install the images in Docker's image cache

+

+

+# Keep track of the current directory

+SCRIPT_DIR=$(cd $(dirname "$0") && pwd)

+TOP_DIR=$(cd $SCRIPT_DIR/../..; pwd)

+

+# Import common functions

+source $TOP_DIR/functions

+

+# Load local configuration

+source $TOP_DIR/stackrc

+

+FILES=$TOP_DIR/files

+

+# Get our defaults

+source $TOP_DIR/lib/nova_plugins/hypervisor-docker

+

+SERVICE_TIMEOUT=${SERVICE_TIMEOUT:-60}

+

+

+# Install Docker Service

+# ======================

+

+# Stop the auto-repo updates and do it when required here

+NO_UPDATE_REPOS=True

+

+# Set up home repo

+curl https://get.docker.io/gpg | sudo apt-key add -

+install_package python-software-properties && \

+    sudo sh -c "echo deb $DOCKER_APT_REPO docker main > /etc/apt/sources.list.d/docker.list"

+apt_get update

+install_package --force-yes lxc-docker=${DOCKER_PACKAGE_VERSION}

+

+# Start the daemon - restart just in case the package ever auto-starts...

+restart_service docker

+

+echo "Waiting for docker daemon to start..."

+DOCKER_GROUP=$(groups | cut -d' ' -f1)

+CONFIGURE_CMD="while ! /bin/echo -e 'GET /v1.3/version HTTP/1.0\n\n' | socat - unix-connect:$DOCKER_UNIX_SOCKET | grep -q '200 OK'; do

+    # Set the right group on docker unix socket before retrying

+    sudo chgrp $DOCKER_GROUP $DOCKER_UNIX_SOCKET

+    sudo chmod g+rw $DOCKER_UNIX_SOCKET

+    sleep 1

+done"

+if ! timeout $SERVICE_TIMEOUT sh -c "$CONFIGURE_CMD"; then

+    die $LINENO "docker did not start"

+fi

+

+

+# Get Docker image

+if [[ ! -r $FILES/docker-ut.tar.gz ]]; then

+    (cd $FILES; curl -OR $DOCKER_IMAGE)

+fi

+if [[ ! -r $FILES/docker-ut.tar.gz ]]; then

+    die $LINENO "Docker image unavailable"

+fi

+docker import - $DOCKER_IMAGE_NAME <$FILES/docker-ut.tar.gz

+

+# Get Docker registry image

+if [[ ! -r $FILES/docker-registry.tar.gz ]]; then

+    (cd $FILES; curl -OR $DOCKER_REGISTRY_IMAGE)

+fi

+if [[ ! -r $FILES/docker-registry.tar.gz ]]; then

+    die $LINENO "Docker registry image unavailable"

+fi

+docker import - $DOCKER_REGISTRY_IMAGE_NAME <$FILES/docker-registry.tar.gz

@@ -65,6 +65,14 @@ if [[ -n "$SCREEN" ]]; then

     fi

 fi

+# Shut down Nova hypervisor plugins after Nova

+NOVA_PLUGINS=$TOP_DIR/lib/nova_plugins

+if is_service_enabled nova && [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then

+    # Load plugin

+    source $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER

+    stop_nova_hypervisor

+fi

+

 # Swift runs daemons

 if is_service_enabled s-proxy; then

     stop_swift