Checks metrics from a given Hadoop daemon's JMX /metrics page, supports JobTracker, TaskTracker, HBase Master & RegionServer

Detects which MapReduce nodes aren't active in the JobTracker if given a node list - checks optional thresholds for the maximum number of missing nodes…

Various checks against a Hadoop MapReduce cluster by querying the JobTracker

Checks % HDFS space used. Based off an earlier plugin I wrote in 2010 that we used in production for over 2 years before replacing…

Various HDFS checks based on dfsadmin -report, unified version of various HDFS plugins I've written over the years

Checks number of available datanodes and if there are any dead datanodes

Check given Hadoop metric(s) via Cloudera Manager Rest API

Checks HDFS Space Balance used across datanodes is within thresholds. Lists the nodes out of balance in verbose mode

Check a Git working copy is in the right branch. Primarily written for puppetmasters to make sure prod and staging environment dirs had the right…

Counts the number of total allocated file descriptors on a system. Designed to be called over NRPE

Checks DNS records including A, NS and MX records for domains which the standard check_dns Nagios plugin can't do

Checks the number of context switches on the a Linux server. Designed to be called over NRPE