Using ansible-playbook --tags=xxx with dynamic inventory

[Alex D.]

Hi,

I tried to run a playbook with a dynamic inventory (see my playbook below) using e.g. ansible-playbook -i nms-vms init-vrf-nms.yml --extra-vars "nms=nms-sz" --tags=basic

Unfortunately, i got the following error:

~

[WARNING]: Could not match supplied host pattern, ignoring: dynamically_created_hosts

PLAY [Initialize selected VRF NMS] ***********************************************************************************************************************************************************************************************************
skipping: no hosts matched

When i use --skip-tags, it works as expected. I wonder if running ansible-playbooks with tags included is even supported ?

init-vrf-nms.yml

---
- hosts: localhost
  gather_facts: no

  vars_prompt:
    - name: nms
      prompt: Which VRF NMS should be initialized
      private: no

  tasks:
    - name: "Add host to dynamic inventory"
      add_host:
        name: "{{ nms }}"
        groups: dynamically_created_hosts

# ---------------------------------------------------------

- name: "Initialize selected VRF NMS"
  hosts: dynamically_created_hosts
  become: yes

  tasks:

  - name: "Apply role 'nms-basic'"
    include_role:
      name: nms-basics
    tags:
      - basics

  - name: "Apply role 'vrf-vm'"
    include_role:
      name: vrf-vm
    tags:
      - vrf-vm

Regards,

Alex

[Brian Coca]

show output of `ansible-inventory -i nms-vms --list`

--
----------
Brian Coca

[Alex D.]

Here's the output. Some vars are obfuscated

$ ansible-inventory -i nms-vms --list
{
    "_meta": {
        "hostvars": {
            "nms-sz": {
                "Files": [],
                "ansible_become_method": "sudo",
                "ansible_common_remote_group": "sysadmins",
                "ansible_host": "172.28.x.x",
                "ansible_password": "xxx",
                "ansible_ssh_common_args": "-o StrictHostKeyChecking=no",
                "ansible_sudo_pass": "xxx",
                "ansible_user": "xxx",
                "mrtg": {
                    "sample_dir": "sz",
                    "sample_router": "sz-r1.4711"
                },
                "netplan": {
                    "ens160": {
                        "ipv4": {
                            "address": "172.28.x.x",
                            "gateway": "172.28.x.x",
                            "netmask": "255.255.255.128",
                            "prefix_length": 25
                        }
                    },
                    "ens192": {
                        "ipv4": {
                            "address": "192.168.x.x",
                            "netmask": "255.255.x.x",
                            "prefix_length": 30,
                            "routes": [
                                {
                                    "to": "192.168.250.0/24",
                                    "via": "192.168.x.x"
                                },
                                {
                                    "to": "172.30.95.22/32",
                                    "via": "192.168.x.x"
                                }
                            ]
                        }
                    }
                },
                "network_gear": {
                    "access": [
                        "ssh",
                        "telnet"
                    ],
                    "snmp_community": "xxx"
                },
                "nginx": {
                    "enabled": false,
                    "state": "stopped"
                },
                "rancid_groups": [
                    "sz"
                ],
                "rancid_user": "xxx",
                "rancid_user_pass": "xxx",
                "syslog_facilities": [
                    "local7"
                ]
            }
        }
    },
    "all": {
        "children": [
            "ungrouped",
            "vrf_nms"
        ]
    },
    "vrf_nms": {
        "hosts": [
            "nms-sz"
        ]
    }
}

[Clint Denham]

In your ansible-playbook command it references the tag "basic" but the playbook itself references "basics". Could you update and try again?

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[Alex D.]

Sorry, that was just an error while cut&paste in my first post.

$ ansible-playbook -i nms-vms init-vrf-nms.yml --check --diff --extra-vars "nms=nms-sz" --tags=basics

PLAY [localhost] *****************************************************************************************************************************************************************************************************************************

[WARNING]: Could not match supplied host pattern, ignoring: dynamically_created_hosts

PLAY [Initialize selected VRF NMS] ***********************************************************************************************************************************************************************************************************
skipping: no hosts matched

PLAY RECAP ***********************************************************************************************************************************************************************************************************************************

What makes me suspicious is the message "Could not match supplied host pattern, ignoring: dynamically_created_hosts"

$ ansible-playbook -i nms-vms init-vrf-nms.yml --extra-vars "nms=nms-sz" --list-tags

[WARNING]: Could not match supplied host pattern, ignoring: dynamically_created_hosts

playbook: init-vrf-nms.yml

  play #1 (localhost): localhost        TAGS: []
      TASK TAGS: []

  play #2 (dynamically_created_hosts): Initialize selected VRF NMS      TAGS: []
      TASK TAGS: [basics, vrf-vm]

Regards,

Alex