Hello...
I ran into a buglet in facter 1.5.9rc6 (from tmz repo). In normal AWS
instances it works great. In VPC instances if doesn't work. This seems
to be because VPC instances don't use the fe:ff:ff:... MAC addresses.
/sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 02:67:4E:E1:26:30
inet addr:172.17.129.24 ...
/sbin/arp
Address HWtype HWaddress Flags Mask Iface
169.254.169.253 ether 02:67:4E:C0:00:01 C eth0
172.17.128.1 ether 02:67:4E:C0:00:01 C eth0
/sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 02:67:4E:DA:58:16
inet addr:172.17.128.126
/sbin/arp
Address HWtype HWaddress Flags Mask Iface
169.254.169.253 ether 02:67:4E:C0:00:01 C eth0
172.17.128.1 ether 02:67:4E:C0:00:01 C eth0
Of the two VPC EC2 instances I've seen, the MAC address always start
with 02:67:4E. I have only seen two instances, both in the same VPC, so
I don't know if this holds for every VPC instance, YMMV.
in ec2.rb , the following seemed to work:
def has_euca_mac?
!!(Facter.value(:macaddress) =~ %r{^02:67:4[eE]:})
end
--
Christopher McCrory
To the optimist, the glass is half full.
To the pessimist, the glass is half empty.
To the engineer, the glass is twice as big as it needs to be.
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