Knowledge Document: Running vbr via backup.sh from Crontab is not working but works when launched on shell directly

Environment

Vertica Analytics Platform 24.4
 

Situation

vbr backup fails when run via crontab with below error

2025-05-30 20:20:03 localhost admintools Returned:
WARNING: The admin tools depend on your login shell being /bin/bash.
Your login shell is currently set to /bin/sh. If you continue to run the admin tools
with this default shell you may experience technical difficulties. If you want
to suppress this warning, please set suppress_shell_warning = True in Configuration
section in admintools.conf.

Do you wish to continue? (Y/N)
dms
Backup FAILED.

Find resolution on support portal