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openstack heat

asked 2019-01-25 11:12:04 -0500

lelunicu gravatar image

updated 2019-01-25 11:12:27 -0500

hi, i like to know from where i must launch nova instance(run in compute) or launch a bare metal instance(compute so on).

from director or from controller? heat dashboard run in controller or in director? tnx

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answered 2019-01-25 22:11:21 -0500

Your cloud has a dashboard IP address. To launch an instance on your cloud from the dashboard, be it a VM or a baremetal instance, point your browser to that IP address and launch the instance. The browser can run on any PC or even tablet or smartphone that has a connection to the dashboard IP address.

Don't use the Heat dashboard. Heat is for setting up entire stacks of instances, networks, routers, volumes and other resources. Use the Compute dashboard.

In order to add a baremetal host to your undercloud, you need to use the undercloud's IP address. Read the Red Hat documentation what needs to be done.

To launch instances from the command line, again you have IP addresses through which you access your cloud. You don't have to log on to a controller; you just need a system that runs the openstack client and has connectivity to the IP addresses.

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With openstack client installed you have all the overcloud command like nova neutron so on.right? If i like then to interact with nova -compute -i must install nova client after i installed openstack client.right? tnx

lelunicu gravatar imagelelunicu ( 2019-01-28 04:38:46 -0500 )edit

The openstack client allows you to issue commands to your overcloud, but also undercloud. Yes, you can use it for almost all Neutron, Nova etc APIs.

There are a few Nova commands and options that the openstack client can't submit, but apart from those, no need to install the nova client.

Bernd Bausch gravatar imageBernd Bausch ( 2019-01-28 07:19:38 -0500 )edit

a last thing. undercloud and overcloud services not run in VMs.right?nova heat so on not run in VMs. then in what isolated environment they run? tnx

lelunicu gravatar imagelelunicu ( 2019-01-28 07:29:19 -0500 )edit

I believe that the latest version of TripleO uses containers, and I guess that is the same for RHEL OSP. I suggest you read the TripleO architecture page.

Perhaps the undercloud can run in a VM; I saw this mentioned somewhere.

Bernd Bausch gravatar imageBernd Bausch ( 2019-01-28 18:49:06 -0500 )edit

Overview of TripleO container architecture:

Bernd Bausch gravatar imageBernd Bausch ( 2019-01-28 18:51:15 -0500 )edit

answered 2019-01-27 17:39:37 -0500

zaneb gravatar image

In the controller. Director is just the installer for the main OpenStack cloud (though it's also based on OpenStack).

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Asked: 2019-01-25 11:12:04 -0500

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Last updated: Jan 27 '19