Having troubles accessing hostvars for new host

[Barry Kaplan]

I have some tasks like:

    - debug: var=hostvars[item]
      with_items: groups.rabbitmq_server


    - name: Update /etc/hosts with rabbitmq-server hostnames
      lineinfile:
        dest: /etc/hosts
        regexp: "^{{hostvars[item]['ansible_default_ipv4']['address']}} {{hostvars[item]['ansible_hostname']}}$"
        line: "{{hostvars[item]['ansible_default_ipv4']['address']}} {{hostvars[item]['ansible_hostname']}}"
        state: present
      with_items: groups.rabbitmq_server

When the second runs I get:

TASK: [Update /etc/hosts with rabbitmq-server hostnames] ********************** 

fatal: [10.0.136.70] => One or more undefined variables: 'dict object' has no attribute 'ansible_default_ipv4'

fatal: [10.0.137.195] => One or more undefined variables: 'dict object' has no attribute 'ansible_default_ipv4'

But just in the debug above I have:

            "ansible_default_ipv4": {
                "address": "10.0.137.195",
                "alias": "eth0",
                "gateway": "10.0.137.1",
                "interface": "eth0",
                "macaddress": "0e:ab:ba:38:c4:a1",
                "mtu": 9001,
                "netmask": "255.255.255.0",
                "network": "10.0.137.0",
                "type": "ether"
            },

( I used to reference the hostvars like hostvars[item].ansible_default_ipv4.address but tried using [] just out of frustration. )

[Barry Kaplan]

Oh, I should have mentioned, this only happens when I have created the ec2 instances in the same play run. On a second run I don't ever seem to get this error.

And this is on 1.9.2

[Brian Coca]

did you gather facts after creating the instances?


--
Brian Coca

[Barry Kaplan]

Yes, the play explicitly has gather_facts:true. The debug just above the failure clearly shows the attribute is present, that's what is confusing.

[Brian Coca]

gather_facts happens before other tasks, my question was if you
gathered facts AFTER creating the new hosts


--
Brian Coca

[Barry Kaplan]

The flow is:

provision.yml:

------------------

- name: Provision rabbitmq cluster
  hosts: localhost
  connection: local
  gather_facts: yes
  tags: [provision, rabbitmq_cluster]

  tasks:
    - name: Create rabbitmq-server instance
      ec2:
        ...

- include: ../../configure/rabbitmq-server.yml
  tags: [configure, rabbitmq_cluster]

rabbitmq-server.yml

---------------------------

- name: Configure rabbitmq-server (install and configure)
  hosts: rabbitmq_server
  sudo: yes
  gather_facts: true
  tags: [rabbitmq_server]

  pre_tasks:

[Brian Coca]

So the new hosts don't get added to the rabbitmq_server group?

I assume this will happen automatically next time the inventory script
runs (if tagged), but that won't happen until you run ansible again,
normally you use add_hosts to temporarily add them for the 'current
run'.


--
Brian Coca