Removing 90 days password expiration and loosen password restriction on Exadata Machine

After ResecureMachine Step in Exadata run, password now are required to be reset/changed and must be complex and this password will expired in 90 days.

To avoid having to reset the passwords and also to avoid the password expiration interval of 90 days, you must run the following command for each user on the system including root (i.e. root, celladmin, cellmonitor on cells and root, oracle on DB nodes): 

chage -d 14000 -E -1 -m 0 -M -1 <username>

To loosen the password restrictions and lessen complexity, login to each node as root and modify /etc/pam.d/system-auth by modifying the string "min=disabled,disabled,16,12,8" to be "min=1,1,1,1,1". After that, reset the root password to whatever value you'd like (suggestion: welcome1 :). 

- wdanyant -