Difference between revisions of "Heat/GettingStartedUsingDevstack"
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== Heat and Devstack == | == Heat and Devstack == | ||
− | Heat is fully integrated into [ | + | Heat is fully integrated into [http://devstack.org/ DevStack]. This is a convenient way to try out or develop heat alongside the current development state of all the other [[OpenStack]] projects. Heat on [[DevStack]] works on both Ubuntu and Fedora. |
These instructions assume you already have a working [[DevStack]] installation which can launch basic instances. | These instructions assume you already have a working [[DevStack]] installation which can launch basic instances. | ||
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</nowiki></pre> | </nowiki></pre> | ||
− | URLs for any of [ | + | URLs for any of [https://github.com/heat-api/prebuilt-jeos-images/downloads these prebuilt JEOS images] can be specified. |
That is all the configuration that is required. When you run `./stack.sh` the Heat processes will be launched in `screen` with the labels prefixed with `h-`. | That is all the configuration that is required. When you run `./stack.sh` the Heat processes will be launched in `screen` with the labels prefixed with `h-`. |
Revision as of 01:31, 15 November 2012
Heat and Devstack
Heat is fully integrated into DevStack. This is a convenient way to try out or develop heat alongside the current development state of all the other OpenStack projects. Heat on DevStack works on both Ubuntu and Fedora.
These instructions assume you already have a working DevStack installation which can launch basic instances.
Configure DevStack to enable Heat
Adding the following line to your `localrc` file will enable the heat services
ENABLED_SERVICES+=,heat,h-api,h-api-cfn,h-api-cw,h-eng,h-meta
It would also be useful to automatically download and register a VM image that Heat can launch.
IMAGE_URLS+=",https://github.com/downloads/heat-api/prebuilt-jeos-images/F16-x86_64-cfntools.qcow2"
URLs for any of these prebuilt JEOS images can be specified.
That is all the configuration that is required. When you run `./stack.sh` the Heat processes will be launched in `screen` with the labels prefixed with `h-`.
Confirming heat is responding
Before any heat commands can be run, the authentication environment needs to be loaded
source openrc
You can confirm that Heat is running and responding with this command
heat list
This should return the following
<ListStacksResponse> <ListStacksResult> <StackSummaries/> </ListStacksResult> </ListStacksResponse>
Preparing Nova for running stacks
Enabling Heat in devstack will replace the default Nova flavors with flavours that the Heat example templates expect. You can see what those flavors are by running
nova flavor-list
Heat needs to launch instances with a keypair, so we need to generate one
nova keypair-add heat_key > heat_key.priv chmod 600 heat_key.priv
Launching a stack
Now lets launch a stack
heat -d create teststack --template-file=../heat/templates/WordPress_Single_Instance.template \ --parameters="InstanceType=m1.large;DBUsername=wp;DBPassword=verybadpassword;KeyName=heat_key;LinuxDistribution=F16"
Which will respond
<CreateStackResponse> <CreateStackResult> <StackId>arn:openstack:heat::service:stacks/teststack/1</StackId> </CreateStackResult> </CreateStackResponse>
List stacks
heat list
List stack events
heat event-list teststack
Describe the wordpress stack
heat describe teststack
Note: After a few seconds, the StackStatus should change from IN_PROGRESS to CREATE_COMPLETE.
Verify instance creation
Because the software takes some time to install from the repository, it may be a few minutes before the Wordpress instance is in a running state.
Point a web browser at the location given by the WebsiteURL Output as shown by heat describe::
wget ${WebsiteURL}
Delete the instance when done
heat delete teststack heat list
Note: This operation will show no running stack.
Troubleshooting
If you encounter issues running heat, see if the solution to the issue is documented on the Troubleshooting wiki page. If not, let us know about the problem in the #heat IRC channel on freenode.