Modify an Openstack environment using CLI¶

You can modify your OpenStack environment after deployment by downloading the .yaml configuration files, editing settings, and then uploading the configuration files back to the Nailgun server. After uploading the files, you must redeploy your OpenStack environment.

Before modifying any settings, back up your OpenStack environment configuration.

If you upload any changes for provisioning or deployment operations, you freeze the configuration for the entire environment; any changes you later make to the networks, cluster, or disk configurations using the Fuel web UI will not be implemented. To modify these parameters, you must edit the appropriate section of each node’s configuration file and then apply the changes using Fuel CLI.

You can download the following configurations:

• network
• settings
• node --disk
• node --network
• provisioning
• deployment

When performing operations with nodes using fuel deployment and fuel provisioning commands, you can indicate specific nodes. For example:

fuel --env 1 deployment --node 1,2,3

When downloading configurations using fuel deployment and fuel provisioning commands, Fuel automatically generates the following files:

• For deployment:

  master.yaml

  Includes details about the Fuel Master node configuration for a specified OpenStack environment.

  <NODE_ID>.yaml

  Includes details about the node deployment. The <NODE_ID>.yaml file contains deployment details and is identical to the astute.yaml file stored on a specific node. The deployment tasks consume parameters included in <NODE_ID>.yaml through hiera.

• For provisioning:

  engine.yaml

  Includes credentials for the provisioning service (Cobbler) engine.

  node-<NODE_ID>.yaml

  Includes details about provisioning for each node.

To modify an OpenStack environment using CLI:

1. Back up your configuration.

2. Download the .yaml configuration file(s).

   Example

   fuel --env 1 network download
   fuel --env 1 settings download
   fuel --env 1 deployment default
   fuel --env 1 provisioning download
   fuel node --node-id 2 --disk --download
   

3. Modify the downloaded file(s).

4. Save the changes.

5. Upload the files to the Nailgun server:

   Example:

   fuel --env 1 provisioning upload
   fuel node --node-id 2 --disk --upload
   

6. Redeploy your OpenStack environment

7. Create a backup of the updated OpenStack environment.

   Note

   You may want to delete the downloaded .yaml files, as they may contain unencrypted passwords. This may pose a security threat.