lib/arborist/monitor/snmp/load.rb
author Mahlon E. Smith <mahlon@martini.nu>
Wed, 30 Aug 2017 13:55:02 -0700
changeset 7 4548e58c8c66
parent 4 e6eb11b1e00d
permissions -rw-r--r--
Use the new #node_properties method, convery from .rvmrc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
4
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     1
# -*- ruby -*-
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     2
# vim: set noet nosta sw=4 ts=4 :
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     3
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     4
require 'arborist/monitor/snmp' unless defined?( Arborist::Monitor::SNMP )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     5
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     6
# SNMP 5 minute load checks.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     7
# Sets current 5 minute load as a 'load5' attribute.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     8
#
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
     9
class Arborist::Monitor::SNMP::Load
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    10
	include Arborist::Monitor::SNMP
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    11
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    12
	extend Loggability
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    13
	log_to :arborist
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    14
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    15
	# OIDS for discovering system load.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    16
	#
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    17
	LOAD = {
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    18
		five_min: '1.3.6.1.4.1.2021.10.1.3.2'
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    19
	}
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    20
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    21
	# Global defaults for instances of this monitor
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    22
	#
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    23
	DEFAULT_OPTIONS = {
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    24
		error_at: 7
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    25
	}
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    26
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    27
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    28
	### Class #run creates a new instance.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    29
	###
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    30
	def self::run( nodes )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    31
		return new.run( nodes )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    32
	end
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    33
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    34
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    35
	### Create a new instance of this monitor.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    36
	###
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    37
	def initialize( options=DEFAULT_OPTIONS )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    38
		options = DEFAULT_OPTIONS.merge( options || {} )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    39
		options.each do |name, value|
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    40
			self.public_send( "#{name.to_s}=", value )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    41
		end
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    42
	end
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    43
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    44
	# Set an error if mount points are above this percentage.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    45
	attr_accessor :error_at
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    46
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    47
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    48
	### Perform the monitoring checks.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    49
	###
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    50
	def run( nodes )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    51
		super do |snmp, host|
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    52
			self.gather_load( snmp, host )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    53
		end
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    54
	end
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    55
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    56
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    57
	#########
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    58
	protected
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    59
	#########
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    60
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    61
	### Collect the load information for +host+ from an existing
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    62
	### (and open) +snmp+ connection.
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    63
	###
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    64
	def gather_load( snmp, host )
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    65
		self.log.debug "Getting system load for: %s" % [ host ]
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    66
		load5 = snmp.get( SNMP::ObjectId.new( LOAD[:five_min] ) ).varbind_list.first.value.to_f
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    67
		self.log.debug "  Load on %s: %0.2f" % [ host, load5 ]
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    68
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    69
		config = @identifiers[ host ].last || {}
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    70
		error_at = config[ 'error_at' ] || self.error_at
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    71
		if load5 >= error_at
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    72
			@results[ host ] = {
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    73
				error: "Load has exceeded %0.2f over a 5 minute average" % [ error_at ],
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    74
				load5: load5
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    75
			}
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    76
		else
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    77
			@results[ host ] = { load5: load5 }
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    78
		end
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    79
	end
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    80
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    81
end # class Arborist::Monitor::SNMP::Load
e6eb11b1e00d Refactor. Move all SNMP "sections" to their own classes.
Mahlon E. Smith <mahlon@martini.nu>
parents:
diff changeset
    82