Ensures that ARP facts are returned only on EC2 hosts
ARP facts on large network might lead to inconstant values
as we are always using the first ARP entry from the output of the ARP
command
Signed-off-by: Ohad Levy <ohadlevy@gmail.com>
Ohad Levy authored 13 years ago
Jacob Helwig committed 13 years ago
| 2 | 2 |
Facter.add(:arp) do
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| 3 | 3 |
confine :kernel => :linux
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| 4 | 4 |
setcode do
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| 5 | |
arp = []
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| 6 | 5 |
output = Facter::Util::Resolution.exec('arp -a')
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| 7 | 6 |
if not output.nil?
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7 |
arp = ""
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| 8 | 8 |
output.each_line do |s|
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| 9 | |
arp.push($1) if s =~ /^\S+\s\S+\s\S+\s(\S+)\s\S+\s\S+\s\S+$/
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9 |
if s =~ /^\S+\s\S+\s\S+\s(\S+)\s\S+\s\S+\s\S+$/
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10 |
arp = $1
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11 |
break # stops on the first match
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12 |
end
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| 10 | 13 |
end
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| 11 | 14 |
end
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| 12 | |
arp[0]
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15 |
EC2_ARP == arp ? arp : nil
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| 13 | 16 |
end
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| 14 | 17 |
end
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| 15 | 18 |
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| 17 | 20 |
Facter.add("arp_" + Facter::Util::IP.alphafy(interface)) do
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| 18 | 21 |
confine :kernel => :linux
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| 19 | 22 |
setcode do
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| 20 | |
Facter::Util::IP.get_arp_value(interface)
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23 |
arp = Facter::Util::IP.get_arp_value(interface)
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EC2_ARP == arp ? arp : nil
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| 21 | 25 |
end
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| 22 | 26 |
end
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| 23 | 27 |
end
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| 5 | 5 |
require 'open-uri'
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| 6 | 6 |
require 'socket'
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| 7 | 7 |
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| 8 | |
EC2_ADDR = "169.254.169.254"
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8 |
EC2_ADDR = "169.254.169.254"
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| 9 | 9 |
EC2_METADATA_URL = "http://#{EC2_ADDR}/2008-02-01/meta-data"
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| 10 | 10 |
EC2_USERDATA_URL = "http://#{EC2_ADDR}/2008-02-01/user-data"
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11 |
EC2_ARP = "fe:ff:ff:ff:ff:ff"
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12 |
EC2_EUCA_MAC = %r{^[dD]0:0[dD]:}
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| 11 | 13 |
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| 12 | 14 |
def can_metadata_connect?(addr, port, timeout=2)
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| 13 | 15 |
t = Socket.new(Socket::Constants::AF_INET, Socket::Constants::SOCK_STREAM, 0)
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| 60 | 62 |
end
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| 61 | 63 |
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| 62 | 64 |
def has_euca_mac?
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| 63 | |
if Facter.value(:macaddress) =~ /^[dD]0:0[dD]:/
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| 64 | |
return true
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| 65 | |
else
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| 66 | |
return false
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| 67 | |
end
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65 |
!!(Facter.value(:macaddress) =~ EC2_EUCA_MAC)
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| 68 | 66 |
end
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| 69 | 67 |
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| 70 | 68 |
def has_ec2_arp?
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| 71 | |
if Facter.value(:arp) == 'fe:ff:ff:ff:ff:ff'
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| 72 | |
return true
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| 73 | |
else
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| 74 | |
return false
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| 75 | |
end
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69 |
!!(Facter.value(:arp) == EC2_ARP)
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| 76 | 70 |
end
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| 77 | 71 |
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| 78 | 72 |
if (has_euca_mac? || has_ec2_arp?) && can_metadata_connect?(EC2_ADDR,80)
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