Populating cluster definition file with current cluster state using the installation toolkit

You can use the installation toolkit to populate the cluster definition file with the current cluster state before proceeding with upgrade.

Before using this functionality, review its limitations. For more information, see Limitations of config populate option of the installation toolkit.

In the following scenarios, you might need to update the cluster definition file with the current cluster state:

A manually created cluster in which you want to use the installation toolkit
A cluster created using the installation toolkit in which manual changes were done

Use the installation toolkit to populate the cluster definition file as follows.

Define the installer node by issuing the ./spectrumscale setup -s InstallNode command.
Repopulate the cluster definition file with the current cluster state by issuing the ./spectrumscale config populate --node Node command.
Note: This command creates the backup of the existing cluster definition file and it creates a new cluster definition file from scratch.
- In a cluster containing ESS, you must specify the EMS node with the config populate command. For example:
```
./spectrumscale config populate --node EMSNode
```
- You can also use this functionality to populate the cluster definition file with file audit logging and call home related information.

In case you are performing an upgrade, proceed with the rest of the upgrade steps. For more information, see Upgrading IBM Spectrum Scale components with the installation toolkit.