AnsibleUndefinedVariable

[Mike Michel]

hi,

im running a master/slave cluster where i want to add another slave via ansible so i am limiting the play to the new slave

ansible-playbook -vvv -l mesos_slaves[3] -i hosts-prod.yml   playbook.yml -u xxx -k -K

Add a point there comes a template which needs the ips of the other slaves

{% for host in groups['mesos_slaves'] %}

   {{ hostvars[host]['ansible_eth0']['ipv4']['address'] }}"

{% endfor %}

where mesos_slaves is

[mesos_slaves]

slave01

slave02

slave03
slave04

The play ends there with

fatal: [slave04] => {'msg': "AnsibleUndefinedVariable: One or more undefined variables: 'dict object' has no attribute 'ansible_eth0'", 'failed': True}

fatal: [slave04] => {'msg': "AnsibleUndefinedVariable: One or more undefined variables: 'dict object' has no attribute 'ansible_eth0'", 'failed': True}

but a 

ansible -i hosts-prod.yml slave01 -m setup -a "filter=*eth0*"

gives me

slave01 | success >> {

    "ansible_facts": {

        "ansible_eth0": {

            "active": true,

            "device": "eth0",

            "ipv4": {

                "address": "192.168.0.12",

Why is it not working in the play?

Mike

[Brian Coca]

I'm guessing you are not gathering facts for the others



--
Brian Coca

[Mike Michel]

how can i do it while limiting to one host?

[Brian Coca]

A couple of ways, the simplest would be 2 plays, the first just
gathers facts on all hosts, the 2nd is limited to a single host, facts
are kept in memory cache by default. Another way is just setting up
persistent fact caching.

--
Brian Coca