I have a 3 node hdp cluster running on AWS (3 t2.large instances). One of my hots (the one where Ambari is installed) has reached 100% storage utilization.
What's the standard way to add additional storage to this host without affecting the existing installation?
You can either resize your volumes(http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-expand-volume.html) or add new volumes(http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.html) . Resizing is more involved as you need to create a larger volume first and migrate data. If you are adding new volume, you will still see older volumes at 100% full while newer volumes at lower percentages.
VM or otherwise, general recommendation if want to add new volumes to existing nodes (or replace failed volumes) is to decommission the node and recommission it back after the volume is added. This will ensure all volumes have similar percentage of disk usage.
@Wellington De Oliveira What else is installed / stored in this node other than Ambari Server? Please list and check if log files / Ambari metric system files are occupying most space. If so, you could add more space and move these to the new space.