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Contents
module Graphiterb
module Monitors
# A monitor for how much space is available on a node.
class DiskSpace < Graphiterb::Monitors::PeriodicMonitor
# Runs and parses `df'.
#
# disk_space.df
# #=> [["/dev/sda", "39373712", "20488716", "16884908", "55%", "/"], ["/dev/sdb", "920090332", "397413344", "475939088", "46%", "/home"]]
#
# @return [Array<Array>]
def df
`/bin/df`.chomp.split("\n").
grep(%r{^/dev/}).
map{|line| line.split(/\s+/) } rescue []
end
# Calls +df+ and adds the space available metric.
def get_metrics metrics, since
# "/dev/sdb1", "39373712", "20488716", "16884908", "55%", "/"
df.each do |handle, size, spaceused, spacefree, percentfree, location|
disk_name = handle.gsub(/^\//, '').split('/')
metrics << [scope(hostname, disk_name, 'available'), spacefree.to_i]
end
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems