The best practice is to use a domain user as the cluster admin. It is the simplest way to maintain the cluster.
If the cluster admin is a local user, before running “egoconfig mghost”, you need to ensure the share directory gives “Full Control” permission to “Everyone”. And if you change the password and run “egosh ego execpasswd", you have to logon to the machine hosting the share directory, and then set the passwd.ego file permission to “Everyone” “Full Control”.