Ambari Name Node Startup Fails when safe mode is on.
The name node service was failing to start because safe mode was on. After reading up on safe mode I realized that it is turned on when read only mode is necessary for the name node. I'm not sure what caused it to stay in safe mode but running this command below resolved my issue.
sudo -u hdfs hdfs dfsadmin -safemode leaveHope this helps someone. - Duncan Krebs