root / plugins / hdfs / hadoop-dfs-plugin @ 4e69103a
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#!/usr/bin/perl |
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# |
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# Description: |
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# This plugin shows basic filesystem information and statistics about the HDFS |
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# filesystem. |
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# |
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# Installation notes: |
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# Symlink this file to hadoop_hdfs_block or hadoop_hdfs_capacity to get block |
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# or capacity information about the DFS. |
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# |
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# |
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# Needs following minimal configuration in plugin-conf.d/munin-node: |
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# [hadoop_hdfs_block] |
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# user hdfs |
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# |
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# [hadoop_hdfs_capacity] |
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# user hdfs |
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# |
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# Author: KARASZI István <muninexchange@spam.raszi.hu> |
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# |
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|
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use strict; |
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use File::Basename qw(basename); |
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use Munin::Plugin; |
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# |
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# main |
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# |
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my $type = &getType($0); |
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if ($ARGV[0]) {
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if ($ARGV[0] eq "autoconf") {
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print "yes\n"; |
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} elsif ($ARGV[0] eq "config") {
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&printConfig(); |
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} else {
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exit(1); |
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} |
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} else {
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&getStatistics(); |
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} |
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# |
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# methods |
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# |
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sub getType {
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my($command) = @_; |
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my $scriptname = &File::Basename::basename($command); |
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if ($scriptname =~ /_([^_]+)$/) {
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if (grep($1, ('block', 'capacity'))) {
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return $1; |
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} |
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} |
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die("Invalid command type '$scriptname'");
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} |
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sub printConfig {
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if ($type eq "block") {
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print <<EOT; |
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graph_title DFS Statistics |
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graph_category fs |
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graph_vlabel count |
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block.label Under replicated blocks |
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corrupt.label Blocks with corrupt replicas |
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missing.label Missing blocks |
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EOT |
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} elsif ($type eq "capacity") {
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print <<EOT; |
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graph_title DFS Capacity |
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graph_category fs |
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graph_vlabel capacity |
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configured.label Configured |
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present.label Present |
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remaining.label DFS Remaining |
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EOT |
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} |
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} |
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sub getBlock {
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my($line) = @_; |
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if ($line =~ /^Under replicated blocks: (\d+)/) {
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printf("block.value %d\n", $1);
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} elsif ($line =~ /^Blocks with corrupt replicas: (\d+)/) {
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printf("corrupt.value %d\n", $1);
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} elsif ($line =~ /^Missing blocks: (\d+)/) {
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printf("missing.value %d\n", $1);
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} |
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} |
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sub getCapacity {
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my($line) = @_; |
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if ($line =~ /^Configured Capacity: (\d+)/) {
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printf("configured.value %d\n", $1);
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} elsif ($line =~ /^Present Capacity: (\d+)/) {
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printf("present.value %d\n", $1);
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} elsif ($line =~ /^DFS Remaining: (\d+)/) {
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printf("remaining.value %d\n", $1);
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} |
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} |
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sub getStatistics {
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open(DFSADMIN, "hdfs dfsadmin -report|") || die("Cannot open dfsadmin: $!");
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while(defined(my $line = <DFSADMIN>)) {
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chomp($line); |
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if ($line =~ /-------------------------------------------------/) {
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last |
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} |
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if ($type eq "block") {
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&getBlock($line); |
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} elsif ($type eq "capacity") {
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&getCapacity($line); |
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} |
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} |
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close(DFSADMIN) |
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} |