You can use command arguments to set the execution parameters of the upgrade command.

You can add a space-separated list of arguments to the CLI upgrade command. 
vcsa-deploy upgrade path_to_the_json_file list_of_arguments
Argument Description
--accept-eula

Accepts the end-user license agreement.

Required for executing the deployment command.

--acknowledge-ceip

Confirms your acknowledgement of your VMware Customer Experience Improvement Program (CEIP) participation.

Required if the ceip_enabled parameter is set to true in the JSON deployment template.

-v, --verbose Adds debug information to the console output.
-t, --terse Hides the console output. Displays only warning and error messages.
--log-dir LOG_DIR Specifies the location of the log and other output files that the installer generates.
--skip-ovftool-verification

Performs basic verification of the configuration parameters and deploys the vCenter Server appliance, but does not validate the OVF Tool parameters in the ovftool_arguments subsection of the JSON template. If you set arguments that the OVF Tool does not recognize, the deployment might fail.

--no-ssl-certificate-verification

Prohibits SSL verification of for all server connections.

The CLI verifies that a server's security certificate is signed by a Certificate Authority (CA), and establishes a secure connection. If the certificate is self-signed, the CLI stops the upgrade unless you specify that the CLI ignore the self-signed certificate using the --no-ssl-certificate-validation command parameter.

If you are connecting to a server with a self-signed certificate, and fail to specify that the CLI accept it, the CLI displays the server's self-signed certificate thumbprint, and prompts you to accept or reject the it.

You can also specify that the CLI ignore self-signed certificates using the ssl_certificate_verification configuration parameter in the JSON template. See Upgrade Configuration Parameters.

Important: Avoid using this option as it may cause problems during or after upgrade due to an un-validated identity of the target host.
--operation-id Lets you provide an identifier to track the concurrent installation, migration, or upgrade of multiple vCenter Server instances. If do not provide an operation ID, the CLI generates a universally unique identifier (UUID) which you can use to identify the different instances of vCenter Server and their installation or upgrade status.
--pause-on-warnings Pauses and waits for acknowledgment of warnings.
--verify-template-only Performs basic template verification without installing Upgrade Runner, running prechecks, and upgrading or migrating the vCenter Server Appliance.
--precheck-only Installs Upgrade Runner on the source appliance and runs a complete set of prechecks without performing the upgrade.
-h, --help Displays the help message for the vcsa-deploy upgrade command.
--template-help Displays the help message for the use of configuration parameters in the JSON upgrade file.
After the execution finishes, you can get the exit code of the command.
Exit Code Description
0 Command ran successfully
1 Runtime error
2 Validation error
3 Template error