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forsan_102218's avatar
forsan_102218
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Nov 06, 2018
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Ansible bigip_device_facts - Filter Output

Hi,

I'm new to ansible and have installed ansible version 2.7 and I'm trying to understand how I can filter the output from the new bigip_device_facts module as bigip_facts are depreciated.

I have checked the devcentral post for the old bigip_facts on https://devcentral.f5.com/questions/ansible-filter-output-48375

But the output from the bigip_device_facts is not the same as bigip_facts.

The new one looks like following: 

changed: [172.16.223.128 -> localhost] => {
    "changed": true,
    "invocation": {
        "module_args": {
            "auth_provider": null,
            "gather_subset": [
                "vlans"
            ],
            "password": "VALUE_SPECIFIED_IN_NO_LOG_PARAMETER",
            "server": "172.16.223.128",
            "server_port": 443,
            "transport": null,
            "user": "admin",
            "validate_certs": false
        }
    },
    "vlans": [
        {
            "auto_lasthop": "default",
            "cmp_hash_algorithm": "default",
            "failsafe_action": "failover-restart-tm",
            "failsafe_enabled": "no",
            "failsafe_timeout": 90,
            "full_path": "/Common/HA",
            "if_index": 160,
            "interfaces": [
                {
                    "full_path": "1.3",
                    "name": "1.3",
                    "tagged": "no"
                }
            ],
            "learning_mode": "enable-forward",
            "mtu": 1500,
            "name": "HA",
            "sflow_poll_interval": 0,
            "sflow_poll_interval_global": "yes",
            "sflow_sampling_rate": 0,
            "sflow_sampling_rate_global": "yes",
            "source_check_enabled": "disabled",
            "tag": 4092,
            "true_mac_address": "00:0c:29:e0:10:eb"
        }
    ]
}

Compared to the old:

  "ansible_facts": {
    "vlan": {
        "/Common/VLAN_10": {

How can I use the debug msg to fileter and print values like vlan id (tag in this case).

Br Andréas

Ansible
devops
LTM
  • Alex_240062's avatar
    Alex_240062
    Nov 08, 2018

    The result from bigip_device_facts contains a list of dictionaries. It can be processed in a number of ways depending on the output you want, but here's a simple example how to print the output with debug:

      - bigip_device_facts:
      provider: "{{ provider_vars }}"
      gather_subset:
        - vlans
    register: gathered_facts

  - name: "Debug vlans"
    debug:
      msg: "VLAN {{ item.name }} has tag {{ item.tag }}"
    with_items: "{{ gathered_facts.vlans }}"

5 Replies

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  • Alex_240062's avatar
    Alex_240062
    Icon for Nimbostratus rankNimbostratus
    Nov 08, 2018

    The result from bigip_device_facts contains a list of dictionaries. It can be processed in a number of ways depending on the output you want, but here's a simple example how to print the output with debug:

      - bigip_device_facts:
      provider: "{{ provider_vars }}"
      gather_subset:
        - vlans
    register: gathered_facts

  - name: "Debug vlans"
    debug:
      msg: "VLAN {{ item.name }} has tag {{ item.tag }}"
    with_items: "{{ gathered_facts.vlans }}"
  • jmartinez_38641's avatar
    jmartinez_38641
    Icon for Nimbostratus rankNimbostratus
    Mar 19, 2019

    Hi all,

    I came here with the same doubt. the answer given is good and works perfectly, but if the gather_subset item contains a special character, it doesn't work.

    This produces an error:

      - bigip_device_facts:
      provider: "{{ provider_vars }}"
      gather_subset:
        - ltm-pools
    register: gathered_facts

  - name: "Debug vlans"
    debug:
      msg: "VLAN {{ item.name }} has tag {{ item.tag }}"
    with_items: "{{ gathered_facts.ltm-pools }}"

    Output error:

     FAILED! => {"msg": "Unable to look up a name or access an attribute in template string ({{ bigip_device_facts.ltm-pools }}).\nMake sure your variable name does not contain invalid characters like '-': unsupported operand type(s) for -: 'StrictUndefined' and 'AnsibleUnicode'"}
        to retry, use: --limit @/opt/project/facts.retry

    Any ideas? Thanks.

  • Vladimir_Bojko1's avatar
    Vladimir_Bojko1
    Historic F5 Account
    Mar 21, 2019

    I think your error is: gathered_facts.ltm_pools instead of gathered_facts.ltm-pools

     

  • jmartinez_38641's avatar
    jmartinez_38641
    Icon for Nimbostratus rankNimbostratus
    Mar 21, 2019

    Hi,

     

    It was my fault. I was using as variable the 'ltm-pool' option from gather_subset instead of the 'ltm_pool' from the output of the registered facts. It works as expected.

     

    Thanks!

     

    • jmartinez_38641's avatar
      jmartinez_38641
      Icon for Nimbostratus rankNimbostratus
      Mar 22, 2019

      Hi all, I am having another issue obtaining filtered information from this module. With the given example, I can use the item.* for referencing the subfields under 'vlans'.

      "bigip_device_facts": {
    "changed": true, 
    "failed": false, 
    "vlans": [
        {
            "auto_lasthop": "default", 
            "cmp_hash_algorithm": "default", 
            "failsafe_action": "failover-restart-tm", 
            "failsafe_enabled": "no", 
            "failsafe_timeout": 90, 
            "full_path": "/Common/F5TEST", 
            "if_index": 96, 
            "learning_mode": "enable-forward", 
            "mtu": 1500, 
            "name": "F5TEST", 
            "sflow_poll_interval": 0, 
            "sflow_poll_interval_global": "yes", 
            "sflow_sampling_rate": 0, 
            "sflow_sampling_rate_global": "yes", 
            "source_check_enabled": "disabled", 
            "tag": 2015, 
            "true_mac_address": "00:11:22:33:44:55"

      But, if I use the subset 'ltm-pools', there is another sublevel under members.

      "bigip_device_facts": {
    "changed": true, 
    "failed": false, 
    "ltm_pools": [
        {
            "allow_nat": "yes", 
            "allow_snat": "yes", 
            "client_ip_tos": "pass-through", 
            "client_link_qos": "pass-through", 
            "full_path": "/Common/mypool", 
            "ignore_persisted_weight": "no", 
            "lb_method": "round-robin", 
            "members": [
                {
                    "address": "192.168.10.10", 
                    "connection_limit": 0, 
                    "dynamic_ratio": 1, 
                    "ephemeral": "no", 
                    "fqdn_autopopulate": "no", 
                    "full_path": "/Common/myhost:8080", 
                    "inherit_profile": "yes", 
                    "logging": "no", 
                    "monitors": [], 
                    "name": "myhost:8080", 
                    "partition": "Common", 
                    "priority_group": 0, 
                    "rate_limit": "no", 
                    "ratio": 1, 
                    "state": "disabled"
                },

      I want to extract only 'name' and 'state', but it remains in the previous level.

      - name: "LTM_POOLS OUTPUT"
  debug:
    msg: "{{ item.members }} has name {{ item.name }} and state {{ item.state }}"
  with_items: "{{ bigip_device_facts.ltm_pools }}"
  when: item.full_path  == "/Common/mypool"

      This doesn't work. It remains at member level. How can I reference the sublevel of members? Thanks!