User Scripts

User Scripts allow users to hook into Coriolis’ OS Morphing process and execute any needed last-minute customizations for the instance(s) being Migrated before being booted up on the destination cloud platform.

The feature is available in the following scenarios:

• Creating a Replica Deployment from a current Replica

• Creating a Migration
  • User Scrips will be one of the steps prior to starting a Migration task
  • The step is available after target configurations

In both cases, you can choose to have one generic, global script per operating system type (Linux, Windows, etc.) or a custom script for a specific instance.

Supported User Scripts file formats:

• for Linux VMs, any scripting language available on a standard Linux (bash, python, etc.)
• for Windows VMs, PowerShell and batch scripts are supported.

User Scripts can be leveraged in the following sample scenarios:

• Install/Remove packages on the instance, that take place on the destination platform (not on the source VM) prior to the Migration process
• Make additional configuration changes
• Download files on the instance
• Install 3rd party drivers

User scripts will run with elevated privileges, so they will have the same access rights as Coriolis itself.

Example of a PowerShell User Script for a Windows VM, this lists all 3rd party drivers from the migrated OS disk of the instance:

1 2	$OS=$args[0] dism.exe /Image:$OS /Get-Drivers

This is a Linux User Script snippet that will download a file to the /var folder on the migrated instance disk:

1 2 3 4	#!/bin/bash #$1 represents the root disk path root_disk="$1" wget https://url -O "$root_disk/var"