When installing or updating eHealth on a UNIX platform, you must have the root password.
this is called out in the install guide:
To start the CA eHealth installation
1. Log on to the CA eHealth system as root (use the dash to log on with the root environment, not another user environment) by entering the following command:
su - root
The root user prompt appears.
using sudo is not a supported option, and there is no other workaround for this.