Secure SD-WAN Engine scripts run when the Secure SD-WAN Engine changes its state. 
 
The script names and locations cannot be changed. If the scripts are not found, engine operation continues as normal. If a script is found, it is executed and a log entry is created. To stop scripts from running, you must delete or move the script. 
Note: If you want to use a script in a cluster, create or copy the script on all nodes in the cluster. Then all nodes function in the same way when their state changes. 
Steps
- 
Create a text file with the commands you want the engine to execute (the first line of the script must be #!/bin/sh) in one of the following ways:
- Create and edit the script on the engine’s command line using the vi text editor. 
- Create and edit the script on a different host and transfer the file to the engine, for example, using SSH. 
 
- 
Save the script in the correct folder on the engine. 
Table 1. Possible scripts on the engines
| Triggering event | Script location and name |  
| Engine operating system boots | /data/run-at-boot |  
| Administrator refreshes or installs the policy | /data/run-at-policy-apply |  
| Engine enters the Online state | /data/run-at-online |  
| Administrator issued the ‘Lock Online’ command | /data/run-at-locked-online |  
| Engine enters the Offline state | /data/run-at-offline |  
| Administrator issued the ‘Lock Offline’ command | /data/run-at-locked-offline |  
| Engine enters the Standby state | /data/run-at-standby |  
 
 
- 
Make the file executable by typing the following command: 
chmod a+x /data/<script name>
 
Result
The script is executed whenever the engine encounters the triggering event for running the script.