vagrant-openstack-provider

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When vagrant up command fails it is often interesting to have a look at the OpenStack instance startup log to see if the error comes from Vagrant or from OpenStack.

I propose to add a config attribute server_log that can take one of the following values :

• none - Never get the instance log from nova (default value)
• error - Fetch and output to the console the instance log if vagrant up fails
• always - Unconditionally fetch and output to the console the instance log at the end of the command vagrant up

The instance log can be fetch using the nova extension api :

POST /v2/​{tenant_id}​/servers/​{server_id}​/action

{
    "os-getConsoleOutput": {
    }
}