If you want to bootstrap the IOS configuration on Day0, configure the IOS Configuration property. See the following IOS configuration example:

Section: IOS configuration 
hostname CSR1
interface  GigabitEthernet1 
description “static IP address config” 
ip address 10.0.0.1 255.255.255.0 
interface GigabitEthernet2
description “DHCP based IP address config” 
ip address dhcp

After the first line that reads Section: IOS configuration, you can enter a list of Cisco IOS XE configuration commands that you want to execute, on the Cisco CSR 1000v router.

When you run this command, the preceding IOS configuration is applied to the CSR 1000v router running on GCP, on Day0.

Scripts property helps you automate the deployment of your CSR1000v instance. If you want to run a Python or a Bash script on Day0 under the guestshell context, provide the public URL and arguments of the python or the bash script in Scripts property.

A script must include a piece of code that includes the shebang (!) character in the first line of the script. This line tells Cisco IOS-XE which script interpreter (Python or Bash) you must use to parse the script code. For example, the first line of a Python script can contain #!/usr/bin/env python, while the first line of a Bash script can contain #!/bin/bash. This line allows the Python or the Bash script to run as executable code in a Linux environment.

When you execute the script, the script runs in the guestshell container of the Cisco CSR 1000v instance. To access the guestshell container, use the guestshell EXEC mode command. For more information on guestshell command, see the Programmability Configuration Guide.

To configure the Scripts property, use the following format:

Section: scripts
public_url <arg1> <arg2>

In this script, the first line of the property should read Section: Scripts.

In the second line of the property, enter the URL of the script and the script's arguments. The script can be either a Python or a Bash script. The script is run in guestshell in the first boot when you upload the custom data file, when you create the CSR1000v instance.

To view more examples of the scripts, see "scripts" at: https://github.com/csr1000v/customdata-examples. Also, refer to the following examples:

Example 1

Section: Script
https://raw.githubusercontent.com/csr1000v/customdata-
examples/master/scripts/smartLicensingConfigurator.py --idtoken "<token_string>" --throughput <throughput_value>

The two lines in the scripts property retrieve the smartLicensingConfigurator.py script from the customdata-examples repository at the specified URL. The script runs in the guestshell container of the Cisco CSR 1000v with the arguments idtoken and throughput.

Example 2

Section: Scripts 
ftp://10.11.0.4/dir1/dir2/script.py -a arg1 -s arg2

These two lines in the Scripts property retrieve the script.py script from the FTP server with the IP address 10.11.0.4, and runs the script with the ./script.py -a arg1 -s arg2 Bash command in the guestshell container of the Cisco CSR 1000v instance using arguments arg1 and arg2.

Note

If a script in the Scripts property requires a Python package that is not included in the standard CentOS Linux release (the CentOS Linux release that is currently used by the guestshell is CentOS Linux release 7.1.1503), you must include information about the Python package in the Python package property. For more information, see: Configuring the Python package Property.

Before you access the custom data and run the Bash or the Python script, Cisco recommends that you test the URL that you intend to use, using the Scripts property. You can test ftp://10.11.0.4/dir1/dir2/script.py -a arg1 -s arg2 by first running the curl software tool to download the script file. In the guestshell, enter the curl command as shown in the following example:

curl -m 30 --retry 5 --user username:password 
ftp://10.11.0.4/dir1/dir2/script_needs_credentials.py.

If the curl command is successful, a copy of the Python script is downloaded, which verifies whether the URL is correct.

If you have specified an FTP server in the Script property, and the server requires a username and password credentials, specify the credentials using the Script credentials property.

Note	If you can access the FTP server anonymously, you need not use the Script credentials property.

Configure the Scripts property with a URL and parameters that match those in the Script credentials property. To configure the Script credentials property, use the following format:

Section: Script credentials
public_url <username> <password>

If a Python package is required by a script in the Scripts property and it is not part of the standard CentOS Linux release 7.1.1503, you must include information about the package in the Python package property. By including the Python package property in the bootstrap file, you ensure that the Cisco CSR 1000v downloads and installs the required Python package before the custom data file that you specified in the Scripts property.

Section: Python package
package_name [ version ] [ sudo ] { [ pip_arg1 [ ..[ pip_arg9] ] ] }

Configure the license property to specify the license technology level for the Cisco CSR 1000v instance.

• Enter the first line of the property in the format: Section: License.

• Enter the second line of the property, which specifies the tech level of the license, using the following format: TechPackage:tech_level .

Note	Ensure there are no spaces between "TechPackage:" and the tech_level. The possible tech_level values include: ax, security, appx, or ipbase. Ensure that tech_level is in lowercase.

Configuration Example

Section: License

TechPackage:security