| Launching a Cluster | |
To modify the default cluster node images provided by Aspera, enter a first-boot script into the Firstboot Script field when launching a node. These scripts are executed during the initialization process of each cluster node (but not when a node instance restarts), before the default Aspera firstboot sequence and before the Cluster Manager starts. None of the Aspera services are running at this time, so any configuration changes (such as modifications to trapd.properties) can be executed without needing to restart the services. For examples of common first-boot scripts, see First-boot Script Examples.
If you are making modifications that involve lengthy software installations, modify the Cluster Manager and cluster node images instead. For more information, see Customizing the Cluster Manager or Cluster Node Images.
You can add first-boot scripts to a cluster by copying your script text into the Firstboot Script field when launching a cluster. For more information on launching a cluster, see Finalizing and Launching a Cluster.