iteration over list of dictionaries.

[Luis M. Ibarra]

Hi,

I'm trying to iterate over this list of dictionaries but I got:

"One or more undefined variables: 'hostname' is undefined".

Task:

       - name: LXC - creating directory
         file: path={{ lxc_dir }}/{{ item.hostname}} owner=root group=root owner=755
         with_items: containers

Vars:

lxc_dir: "/var/lib/lxc"
containers: [
    {  
        hostname : "test",
        lxc_rootfs : '{{ lxc_dir }}/{{ hostname }}/rootfs',
        lxc_mount : '{{ lxc_dir }}/{{ hostname }}/fstab',
        lxc_utsname : '{{ hostname }}',
        lxc_arch : '{{ ansible_architecture }}',
        lxc_ip_addr : "10.0.3.101",
        lxc_prefix_ip_addr : "24",
        lxc_broadcast_addr : "10.0.0.255",
        lxc.network.ipv4 : '{{ lxc_ip_addr }}/{{ lxc_prefix_ip_addr }} {{ lxc_broadcast_addr }}',
        lxc.network.ipv4.gateway : "10.0.3.1",
        lxc_network_type : '{{ | default(veth) }}',
        lxc_network_flags : '{{ | default(up) }}',
        lxc_network_link : '{{ | default(link) }}'
    }, 
]

--

Luis M. Ibarra

[Brian Coca]

try item[0].hostname



--
Brian Coca

[Luis M. Ibarra]

It doesn't work.

I tried with:

- name: LXC - Debug
     debug: msg={{item.[0].hostname}}
     with_items: containers


ok: [127.0.0.1] => (item={'hostname': 'test', 'lxc_utsname': u'{{hostname}}', 'lxc_network_flags': u'{{| default(up)}}', 'lxc_arch': u'x86_64', 'lxc_ip
_addr': '10.0.3.101', 'lxc_rootfs': u'{{lxc_dir}}/{{hostname}}/rootfs', 'lxc_network_link': u'{{| default(link)}}', 'lxc_prefix_ip_addr': '24', 'lxc_br
oadcast_addr': '10.0.0.255', 'lxc_network_type': u'{{| default(veth)}}', 'lxc_mount': u'{{lxc_dir}}/{{hostname}}/fstab', 'lxc.network.ipv4': u'{{lxc_ip
_addr}}/{{lxc_prefix_ip_addr}} {{lxc_broadcast_addr}}', 'lxc.network.ipv4.gateway': '10.0.3.1'}) => {
    "item": {
        "hostname": "test",

        "lxc.network.ipv4": "{{lxc_ip_addr}}/{{lxc_prefix_ip_addr}} {{lxc_broadcast_addr}}",
        "lxc.network.ipv4.gateway": "10.0.3.1",

        "lxc_arch": "x86_64",
        "lxc_broadcast_addr": "10.0.0.255",
        "lxc_ip_addr": "10.0.3.101",

        "lxc_mount": "{{lxc_dir}}/{{hostname}}/fstab",

        "lxc_network_flags": "{{| default(up)}}",
        "lxc_network_link": "{{| default(link)}}",

        "lxc_network_type": "{{| default(veth)}}",
        "lxc_prefix_ip_addr": "24",

        "lxc_rootfs": "{{lxc_dir}}/{{hostname}}/rootfs",

        "lxc_utsname": "{{hostname}}"
    },
    "msg": "{{item.[0].hostname}}"
}

No success obtaining the dictionary values.

try item[0].hostname



--
Brian Coca

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--

Luis M. Ibarra

[Brian Coca]

could you change the vars definition to:

containers:
- hostname : "test"
lxc_rootfs : '{{ lxc_dir }}/{{ hostname }}/rootfs'
lxc_mount : '{{ lxc_dir }}/{{ hostname }}/fstab'
...


this should make item.hostname work

> https://groups.google.com/d/msgid/ansible-project/CAFyQ8TSeymhgKzGLzeL-hzZZWkkDo%3DBK4hRA2X1i5tNmYnpMYA%40mail.gmail.com.

>
> For more options, visit https://groups.google.com/d/optout.



--

Brian Coca

[Brian Coca]

never mind, it wasn't that, these are the problem:

lxc_rootfs : '{{ lxc_dir }}/{{ hostname }}/rootfs',

lxc_mount : '{{ lxc_dir }}/{{ hostname }}/fstab',

lxc_utsname : '{{ hostname }}',

the 'hostname' variable you are referencing there does not exist. If
you are trying to reference the key in the same dictionary, that will
not work.


--
Brian Coca

[Luis M. Ibarra]

It worked.

  - name: LXC - Debug

    debug: msg={{ item.hostname }}
    with_items: containers

containers: [ 
    {
        hostname : "test",
        lxc_rootfs : "{{ lxc_dir }}/test/rootfs",
        lxc_mount : "{{ lxc_dir }}/test/fstab",
        lxc_utsname : "test",
        lxc_arch : "{{ ansible_architecture }}",
        lxc_network_ipv4 : "10.0.3.103/24 10.0.3.255",
        lxc_network_ipv4_gateway : "10.0.3.1",
        lxc_network_type : "{{ | default(veth) }}",

        lxc_network_flags : "{{ | default(up) }}",
        lxc_network_link : "{{ | default(link) }}",

      },
]

Thanks a lot.

--
Brian Coca

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For more options, visit https://groups.google.com/d/optout.

--

Luis M. Ibarra

[rek...@voodoowarez.com]

On Thu, Nov 20, 2014 at 10:49:53PM -0500, Luis M. Ibarra wrote:
> - name: LXC - Debug
> debug: msg={{item.[0].hostname}}
> with_items: containers

{{item[0].hostname}}

no dot, afaik

also, when reporting errors, helpfully provide the output you get too.