retrieving facter_ec2_metadata from hostvars - can't get element in macs

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1

I can drill down into hostvars like this:

`

  • debug:
    msg: “looking at interface macs: {{ hostvars[inventory_hostname].facter_ec2_metadata.network.interfaces.macs }}”

`

And I get something like this:

`

ok: [db01.deva.ecm] => {
“msg”: “looking at interface macs: {u’xx:xx:xx:xx:xx:xx’: {u’local-hostname’: u’ip-10-1-1-9.us-west-1.compute.internal’, u’security-groups’: u’sg_me’, u’vpc-ipv4-cidr-blocks’: u’10.1.0.0/16’, u’subnet-id’: u’subnet-009ae259d26e44f23’, u’vpc-ipv4-cidr-block’: u’10.1.0.0/16’, u’interface-id’: u’eni-0f706387a1423f329’, u’mac’: u’xx:xx:xx:xx:xx:xx, u’security-group-ids’: u’sg-034d209d935486e41’, u’local-ipv4s’: u’10.1.1.10’, u’owner-id’: u’784710449476’, u’subnet-ipv4-cidr-block’: u’10.1.1.0/24’, u’device-number’: u’0’, u’vpc-id’: u’vpc-1710943aba582459a’}}”
}

`

I get an error if I try to find the first/only mac address with the [0] approach like this:

`
{{ hostvars[inventory_hostname].facter_ec2_metadata.network.interfaces.macs[0] }}

`

or

`
{{ hostvars[inventory_hostname].facter_ec2_metadata.network.interfaces.macs.0 }}

`

What’s the trick to get to the values within the mac address?

Any tips would be appreciated, thanks,
Chris.

2

ansible 2.7.1
config file = /etc/ansible/ansible.cfg
configured module search path = [u’/Users/cjefferies/.ansible/plugins/modules’, u’/usr/share/ansible/plugins/modules’]
ansible python module location = /Library/Python/2.7/site-packages/ansible
executable location = /usr/local/bin/ansible
python version = 2.7.10 (default, Aug 17 2018, 17:41:52) [GCC 4.2.1 Compatible Apple LLVM 10.0.0 (clang-1000.0.42)]

3

macs is a dict and not a list. Therefor using 0 to get the fist list element wont work.

To get information out of a dict you need to use the key which is the mac address in you case.

4

That’s too bad because I don’t have the mac address before I need to read its attributes. How might a person get a list of the mac addresses associated with the interfaces?

Thanks for the info.
Chris.

5

You could try using python method to get the keys .....macs.keys() this will return the list of all keys in macs.
So the fist one would be .....macs.keys()[0]

6

That worked, Kai. Thank you.