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Forum Discussion

dani_martinez_2's avatar
dani_martinez_2
Icon for Nimbostratus rankNimbostratus
May 09, 2018

host parameter in bigip_pool_member

Hello I am quite new to Automation, could someone explain what is the meaning of the field: host: "{{ ansible_default_ipv4['address'] }}", for the ansible module bigip_pool_member. I assume it retrie...
Ansible
BIG-IP
BIG-IP DNS
devops
Super-NetOps
Andy_McGrath's avatar
Andy_McGrath
Icon for Cumulonimbus rankCumulonimbus
Aug 07, 2018

The 

host
parameter is the F5 device the want to pass the module task to, in this case is a variable passed it it.

With Ansible 

gather_facts
is set to 'on' (it is on by default) then you have access to a load of variables you can use in your playbooks.

With 

gather_facts
you should get a dictionary variable set named 
ansible_default_ipv4
which would look like the following:

"ansible_default_ipv4": {
    "address": "10.0.0.1",
    "alias": "eth0",
    "gateway": "10.0.0.254",
    "interface": "eth0",
    "macaddress": "REDACTED",
    "mtu": 1500,
    "netmask": "255.255.255.0",
    "network": "REDACTED",
    "type": "ether"
},

You can then use 

ansible_default_ipv4.address
or 
ansible_default_ipv4['address']
to reference the address index of the dictionary.

In your playbooks you will need to use 

"{{ansible_default_ipv4.address}}"
or 
"{{ansible_default_ipv4['address']}}"

See Ansible 2.6 Playbook Vaiables for more information.