From: <glassfish_at_javadesktop.org>
Date: Thu, 07 Feb 2008 22:05:17 PST

change the glassfish masterpassword to match the password of your stores (assuming both keystore and truststore have the same password)

  asadmin change-master-password --savemasterpassword=true
[Message sent by forum member 'kumarjayanti' (kumarjayanti)]

http://forums.java.net/jive/thread.jspa?messageID=258022