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# TRANSLATORS: do not translate
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desc <<-END_DESC
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This task search hosts that have been out of sync for longer than
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twice your out of sync interval by using DNS lookups and ping.
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Once it finishes scanning, it will prompt you to delete hosts that
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don't have DNS entries nor respond to ping.
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You can provide the number of seconds after which a host is considered
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out of sync by using the environment variable 'OUTOFSYNC_INTERVAL'.
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Legend:
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"." - pingable
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"x" - no ping response
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Examples:
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rake hosts:scan_out_of_sync RAILS_ENV="production"
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rake hosts:scan_out_of_sync RAILS_ENV="production" OUTOFSYNC_INTERVAL=3600
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END_DESC
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namespace :hosts do
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task :scan_out_of_sync => :environment do
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require 'net/ping/external'
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require 'resolv'
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def printhosts(list, description)
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unless list.empty?
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puts
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puts "Found #{list.size} #{description}:"
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puts "Name".ljust(40) + "Environment".ljust(20) + "Last Report"
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puts '*' * 80
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list.each do |h|
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puts h.name.ljust(40) + h.environment.to_s.ljust(20) + h.last_report.to_s(:short)
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end
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end
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end
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def out_of_sync_interval
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return ENV['OUTOFSYNC_INTERVAL'] if ENV['OUTOFSYNC_INTERVAL'].present?
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2 * (Setting[:outofsync_interval])
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end
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pingable = []
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missingdns = []
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offline = []
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Host::Managed.out_of_sync(out_of_sync_interval.to_i.seconds.ago).
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order('environment_id ASC').collect do |host|
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$stdout.flush
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ip = Resolv::DNS.new.getaddress(host.name).to_s rescue nil
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if ip.empty?
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missingdns << host
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else
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if host.ip.blank?
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puts "Host #{host.name} does not have an IP in Foreman. It resolved to IP: '#{ip}' through DNS. Skipping..."
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next
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end
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all_host_ips = host.interfaces.pluck(:ip)
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puts "Conflict IP address for #{host.name}" unless all_host_ips.include? ip
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begin
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if Net::Ping::External.new(host.ip).ping
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print "."
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pingable << host
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else
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print "x"
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offline << host
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end
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rescue => e
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Rails.logger.warn "Could not ping host #{host.name} due to an exception: #{e} - skipping"
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end
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end
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end
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puts
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if missingdns.empty?
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puts "All out of sync hosts exist in DNS"
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else
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printhosts(missingdns, "hosts with no DNS entry")
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puts "Are you sure you want to continue? This task will delete the hosts above [y/N]"
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input = STDIN.gets.chomp
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abort("No action taken. Bye!") unless input.downcase == "y"
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missingdns.each do |h|
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print "Destroying host #{h.fqdn}... "
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h.destroy
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puts "DESTROYED"
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end
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end
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printhosts(offline, "offline hosts")
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printhosts(pingable, "online hosts which are not reporting back")
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end
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end
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