check_hadoop_hdfs

This is a test to check status of hdfs in a hadoop cluster. The test uses the Hadoop hdfs admin web page, normally found at; http://hdfs-namenode:50070/dfshealth.jsp I am just parsing output from this webpage using (bad) regexps. Requires the nagios perl modules, utils.pm Tested with hadoop 0.20.2 Gives performancedata for unreplicated blocks, data in hdfs, nodes OK/Dead and number of files/directories/blocks in the hdfs. Usage: check_hadoop.pl -w -c -x -u -H -p [-v version] [-h help] Checks several Hadoop hdfs-parameters -H (–Host) -p (–Port) -w (–warning) = warning for DFS Usage -c (–critical) = critical limit for DFS Usage (w < c ) -x (–unreplicatedwarn) = Warning limit for Unreplicated blocks -u (–unreplicatedcritical) = Error limit for Unreplicated blocks -h (–help) -v (–version) Example Nagios-config define service{ use generic_service service_description Hadoop_Extended Check check_command check_hadoop_extended hosts namenode.company.com } define command{ command_name check_hadoop_extended command_line $USER1$/check_hadoop.pl -H namenode.company.com -p 50070 -w 5 -c 10 -x 100 -u 1000 }

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