There are a number of tools that have changed from green to yellow. I am including the details from the manager console. Please review and get back to me.
NameNode summary: cloudera1 (Availability: Active, Health: Concerning). This health test reflects the health of the active NameNode
Healthy Hue Server: 0. Concerning Hue Server: 1. Total Hue Server: 1. Percent healthy: 0.00%. Percent healthy or concerning: 100.00%. Warning threshold: 99.00%.
Healthy Oozie Server: 0. Concerning Oozie Server: 1. Total Oozie Server: 1. Percent healthy: 0.00%. Percent healthy or concerning: 100.00%. Warning threshold: 99.00%.
Cloudera folks - Any guideline on setting the appropriate threshold for Monitor Swap Memory Usage? The default warning of Any seems heavy-handed in modern Linux systems, where it may make sense to swap even when lots of memory is still free (e.g. http://unix.stackexchange.com/questions/2658/why-use-swap-when-there-is-more-than-enough-free-space-... )