How to get heat to work with a remote OpenStack.

How to get heat to work with a remote OpenStack.

Say you have a remote/public install of OpenStack and you want to use a local install of heat to talk to it. This can be handy when developing, as the remote OpenStack can be kept stable and is not effected by changes made to the development machine.

So lets say you have 2 machines:

  • “rock” ip == 192.168.1.88 (used for base OpenStack services)

  • “hack” ip == 192.168.1.77 (used for heat development)

Install your OpenStack as normal on “rock”.

In this example “hack” is used as the devstack to install heat on. The localrc looked like this:

HEAT_STANDALONE=True
KEYSTONE_AUTH_HOST=192.168.1.88
KEYSTONE_AUTH_PORT=35357
KEYSTONE_AUTH_PROTOCOL=http
KEYSTONE_SERVICE_HOST=$KEYSTONE_AUTH_HOST
KEYSTONE_SERVICE_PORT=$KEYSTONE_AUTH_PORT
KEYSTONE_SERVICE_PROTOCOL=$KEYSTONE_AUTH_PROTOCOL

MY_PASSWORD=abetterpasswordthanthis
DATABASE_PASSWORD=$MY_PASSWORD
RABBIT_PASSWORD=$MY_PASSWORD

disable_all_services
# Alternative RPC backends are zeromq and rabbit
ENABLED_SERVICES=qpid
enable_service mysql heat h-api h-api-cfn h-api-cw h-eng

Then run your ./stack.sh as normal.

You then need a special environment (not devstack/openrc) to make this work. go to your “rock” machine and get the tenant_id that you want to work with:

keystone tenant-list
+----------------------------------+--------------------+---------+
|                id                |        name        | enabled |
+----------------------------------+--------------------+---------+
| 6943e3ebad0d465387d05d73f8e0b3fc |       admin        |   True  |
| b12482712e354dd3b9f64ce608ba20f3 |      alt_demo      |   True  |
| bf03bf32e3884d489004ac995ff7a61c |        demo        |   True  |
| c23ceb3bf5dd4f9692488855de99137b | invisible_to_admin |   True  |
| c328c1f3b945487d859ed2f53dcf0fe4 |      service       |   True  |
+----------------------------------+--------------------+---------+

Let’s say you want “demo”. Now make a file to store your new environment (heat.env).

export HEAT_URL=http://192.168.1.77:8004/v1/bf03bf32e3884d489004ac995ff7a61c
export OS_NO_CLIENT_AUTH=True
export OS_USERNAME=admin
export OS_TENANT_NAME=demo
export OS_PASSWORD=abetterpasswordthanthis
export OS_AUTH_URL=http://192.168.1.88:35357/v2.0/

Now you use this like:

. heat.env
heat stack-list

Note: remember to open up firewall ports on “rock” so that you can access the OpenStack services.

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