Merge "Add example of SoftwareDeployments with cirros"
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=====================
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Simple Cirros example
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=====================
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This directory contains a very simple proof-of-concept hook script and
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template which shows how you can use SoftwareDeployment resources with
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a cirros image (which doesn't contain cloud-init or python), which may
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be useful for testing.
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Since cirros images don't currently support multi-part mime user-data,
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it's necessary to inject the hook script to the image and upload the
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modified image to glance:
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1. wget http://download.cirros-cloud.net/0.3.2/cirros-0.3.2-x86_64-disk.img
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2. virt-copy-in -a cirros-0.3.2-x86_64-disk.img init.d/heat-deploy-hook /etc/init.d
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3. virt-copy-in -a cirros-0.3.2-x86_64-disk.img rc3.d/S99-heat-deploy-hook /etc/rc3.d
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4. glance image-create --name cirros-0.3.2-sc --disk-format=qcow2 --container-format=bare < cirros-0.3.2-x86_64-disk.img
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5. heat stack-create sc1 -f cirros-hello-world.yaml -P "image=cirros-0.3.2-sc"
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*NOTE*: The hook script is very basic and has a number of TODO items related to
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security and functionality - please don't use it for "real" deployments, it's
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intended to enable easier testing and for developer experimentation only.
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heat_template_version: 2013-05-23
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description: >
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This template demonstrates a minimal SoftwareDeployment example
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parameters:
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key_name:
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type: string
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default: stack_key
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flavor:
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type: string
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default: m1.small
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image:
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type: string
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resources:
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sc:
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type: OS::Heat::SoftwareConfig
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properties:
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inputs:
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- name: message
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default: 'NONE'
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outputs:
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- name: file_content
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group: script
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config: |
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#!/bin/sh
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echo "${message}" > /hello
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cat /hello > ${heat_outputs_path}.file_content
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sd:
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type: OS::Heat::SoftwareDeployment
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properties:
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config: {get_resource: sc}
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server: {get_resource: server}
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signal_transport: HEAT_SIGNAL
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input_values:
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message: 'Hello, world!'
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server:
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type: OS::Nova::Server
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properties:
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image: {get_param: image}
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flavor: {get_param: flavor}
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key_name: {get_param: key_name}
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user_data_format: SOFTWARE_CONFIG
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software_config_transport: POLL_SERVER_HEAT
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outputs:
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deploy_output:
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value:
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get_attr: [sd, file_content]
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#!/bin/sh
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# Simple hook script to run Heat SoftwareDeployments in Cirros images
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# FIXME: need to create a directory under var with appropriate permissions
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TMPDIR="/tmp"
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# Extract the os-collect-config json from the user-data
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grep "^{" /var/run/cirros/datasource/data/user-data | grep os-collect-config > ${TMPDIR}/oscc_user_data.json
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mkdir -p ${TMPDIR}/oscc_user_data_out
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json2fstree ${TMPDIR}/oscc_user_data_out ${TMPDIR}/oscc_user_data.json
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# Load credentials from the decoded data
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OSC_DATA_PATH=${TMPDIR}/oscc_user_data_out/os-collect-config/heat
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PASSWORD=$(cat $OSC_DATA_PATH/password)
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USER_ID=$(cat $OSC_DATA_PATH/user_id)
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AUTH_URL=$(cat $OSC_DATA_PATH/auth_url)
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PROJECT_ID=$(cat $OSC_DATA_PATH/project_id)
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# Get a token and de-jsonify the response
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# FIXME currently this only works with v2 keystone
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V2_JSON='{"auth": {"tenantId": "'$PROJECT_ID'", "passwordCredentials": {"userId": "'$USER_ID'", "password": "'$PASSWORD'"}}}'
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curl -i -d "$V2_JSON" -H "Content-type: application/json" $AUTH_URL/tokens | grep "^{" > ${TMPDIR}/token_json.json
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mkdir -p ${TMPDIR}/token_data_out
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json2fstree ${TMPDIR}/token_data_out ${TMPDIR}/token_json.json
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TOKEN=$(cat ${TMPDIR}/token_data_out/access/token/id)
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# Locate the heat API endpoint from the token response
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SC_DIR=$(grep -r orchestration ${TMPDIR}/token_data_out/access/serviceCatalog/ | sed "s/\/type:orchestration//")
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SC_PUBURL=$(find $SC_DIR -name publicURL)
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SC_ENDPOINT=$(cat $SC_PUBURL)
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# Get resource metadata and decode it with json2fstree
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STACK_ID=$(cat $OSC_DATA_PATH/stack_id)
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RESOURCE_NAME=$(cat $OSC_DATA_PATH/resource_name)
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curl -i -X GET -H "X-Auth-Token:$TOKEN" $SC_ENDPOINT/stacks/$STACK_ID/resources/$RESOURCE_NAME/metadata | grep "^{" > ${TMPDIR}/resource_metadata.json
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mkdir -p ${TMPDIR}/resource_metadata_out
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json2fstree ${TMPDIR}/resource_metadata_out ${TMPDIR}/resource_metadata.json
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# Iterate over the configs and run them (ignores inputs and outputs atm)
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CONFIGS=$(find ${TMPDIR}/resource_metadata_out/metadata/deployments -name config)
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for config in $CONFIGS
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do
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echo "Processing config $config"
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# Create output directory and set variable
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DEPLOY_DIR=$(dirname $config)
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DEPLOY_TYPE=$(cat $DEPLOY_DIR/group)
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if [ $DEPLOY_TYPE != 'script' ];
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then
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echo "Skipping config $config, $DEPLOY_TYPE not script"
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continue
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fi
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OUTPUT_PREFIX=/tmp/heat_deploy/outputs/$(basename $DEPLOY_DIR)
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mkdir -p /tmp/heat_deploy/outputs
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export heat_outputs_path="$OUTPUT_PREFIX"
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# Iterate over inputs and set them in the environment
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DEPLOY_RESOURCE_INPUT=$(grep -r deploy_resource_name $DEPLOY_DIR/inputs | sed "s/name:deploy_resource_name//")
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CONFIG_INPUTS=""
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for input_dir in $DEPLOY_DIR/inputs/*
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do
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if [ -d $input_dir ]
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then
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name=$(cat $input_dir/name)
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value=$(cat $input_dir/value)
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echo "Exporting input $name=$value for deployment"
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export $name="$value"
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CONFIG_INPUTS="$CONFIG_INPUTS $name"
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fi
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done
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# Run the config, capture stdout/stderr and the return code
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sh $config 1> ${OUTPUT_PREFIX}.deploy_stdout 2> ${OUTPUT_PREFIX}.deploy_stderr
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echo $? > ${OUTPUT_PREFIX}.deploy_status_code
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# Signal completion
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# FIXME: we're reusing the credentials associated with the server, in theory
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# we should get another token using user associated with the deployment.
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# Also we don't catch any errors
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SIGNAL_DATA=""
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for output_path in $OUTPUT_PREFIX.*
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do
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output=${output_path#$OUTPUT_PREFIX.}
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echo "Got output $output"
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SIGNAL_DATA="${SIGNAL_DATA}, \"$output\": \"$(cat $output_path)\""
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done
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echo "SIGNAL_DATA=$SIGNAL_DATA"
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SIGNAL_DATA_JSON="{${SIGNAL_DATA#", "}}"
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curl -i -X POST -d "${SIGNAL_DATA_JSON}" -H 'Content-Type: application/json' -H "X-Auth-Token:$TOKEN" $SC_ENDPOINT/stacks/$STACK_ID/resources/$deploy_resource_name/signal
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# Clean the environment
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unset $CONFIG_INPUTS
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done
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@ -0,0 +1 @@
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../init.d/heat-deploy-hook
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