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Chapter 4. Setting up an authentication method for RHOSP

The high availability fence agents and resource agents support three authentication methods for communicating with RHOSP:

  • Authentication with a clouds.yaml configuration file
  • Authentication with an OpenRC environment script
  • Authentication with a username and password through Pacemaker

After determining the authentication method to use for the cluster, specify the appropriate authentication parameters when creating a fencing or cluster resource.

4.1. Authenticating with RHOSP by using a clouds.yaml file
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The procedures in this document that use a a clouds.yaml file for authentication use the clouds.yaml file shown in this procedure. Those procedures specify ha-example for the cloud= parameter, as defined in this file.

Procedure

  1. On each node that will be part of your cluster, create a clouds.yaml file, as in the following example. For information about creating a clouds.yaml file, see Users and Identity Management Guide. 

    $ cat .config/openstack/clouds.yaml
clouds:
  ha-example:
    auth:
      auth_url: https://<ip_address>:13000/
      project_name: rainbow
      username: unicorns
      password: <password>
      user_domain_name: Default
      project_domain_name: Default
  <. . . additional options . . .>
  region_name: regionOne
  verify: False
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  2. Test whether authentication is successful and you have access to the RHOSP API with the following basic RHOSP command, substituting the name of the cloud you specified in the clouds.yaml file you created for ha-example. If this command does not display a server list, contact your RHOSP administrator. 

    $ openstack --os-cloud=ha-example server list
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  3. Specify the cloud parameter when creating a cluster resource or a fencing resource.

To use an OpenRC environment script to authenticate with RHOSP, perform the following steps.

Procedure

  1. On each node that will be part of your cluster, configure an OpenRC environment script. For information about creating an OpenRC environment script, see Set environment variables using the OpenStack RC file.

  2. Test whether authentication is successful and you have access to the RHOSP API with the following basic RHOSP command. If this command does not display a server list, contact your RHOSP administrator. 

    $ openstack server list
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  3. Specify the openrc parameter when creating a cluster resource or a fencing resource.

To authenticate with RHOSP by means of a username and password, specify the username, password, and auth_url parameters for a cluster resource or a fencing resource when you create the resource. Additional authentication parameters may be required, depending on the RHOSP configuration. The RHOSP administrator provides the authentication parameters to use.

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