in my Ambari cluster we have some services that not installed yet as graphite service as described here ( in the picture ) what are the API commands that required in order to identify which service is/are available to install and the API that install the service ... View more

when we start the data node on one of the workers machine we get: ERROR datanode.DataNode (DataNode.java:secureMain(2691)) - Exception in secureMain org.apache.hadoop.util.DiskChecker$DiskErrorException: Too many failed volumes - current valid volumes: 4, volumes configured: 5, volumes failed: 1, volume failures tolerated: 0 and this WARN checker.StorageLocationChecker (StorageLocationChecker.java:check(208)) - Exception checking StorageLocation [DISK]file:/grid/sdc/hadoop/hdfs/data/ org.apache.hadoop.util.DiskChecker$DiskErrorException: Directory is not writable: /xxxx/sdc/hadoop/hdfs/data what are the steps that needs to fix it? ... View more

in ambari GUI we want to add the graphite service so we select actions --> add service --> check the box of graphite --> assign masters --> assign slaves and masters but when click next to the next screen "assign slaves and masters" this screen stay only 2 second and then we get the customize services ( so we cant check the boxes in the screen of assign slaves and masters because its disappeared after 2 seconds , why this happened ? ... View more