I tried resetting password of maria_dev but it shows the following: [root@sandbox ~]# passwd maria_dev passwd: Unknown user name 'maria_dev'. Also tried grep command but seems no 'maria_dev' user exists: [root@sandbox ~]# grep 'maria_dev' /etc/passwd [root@sandbox ~]# But weird thing is while using ambari i am able to login using maria_dev but not on SSH Putty. ... View more