Issue
I'm sort of trying to build an inventory file from an ansible playbook run.
I'm trying to list out all the kvm hosts and the guests running on them, by running both service libvirtd status
and if successful, virsh list --all
, and to store the values in a file on the ansible host.
Ive tried a few different playbook structures but none have been successful in writing the file (using local_action
wrote the ansible_hostname
from just one host).
Please can someone guide me on what I'm doing wrong?
This is what I'm running:
- name: Determine KVM hosts
hosts: all
become: yes
#gather_facts: false
tasks:
- name: Check if libvirtd service exists
shell: "service libvirtd status"
register: libvirtd_status
failed_when: not(libvirtd_status.rc == 0)
ignore_errors: true
- name: List KVM guests
shell: "virsh list --all"
register: list_vms
when: libvirtd_status.rc == 0
ignore_errors: true
- name: Write hostname to file
lineinfile:
path: /tmp/libvirtd_hosts
line: "{{ ansible_hostname }} kvm guests: "
create: true
#local_action: copy content="{{ item.value }}" dest="/tmp/libvirtd_hosts"
with_items:
- variable: ansible_hostname
value: "{{ ansible_hostname }}"
- variable: list_vms
value: "{{ list_vms }}"
when: libvirtd_status.rc == 0 or list_vms.rc == 0
Solution
Was able to cobble something that's mostly working:
- name: Check if libvirtd service exists
shell: "service libvirtd status"
register: libvirtd_status
failed_when: libvirtd_status.rc not in [0, 1]
- name: List KVM guests
#shell: "virsh list --all"
virt:
command: list_vms
register: all_vms
when: libvirtd_status.rc == 0
---
- name: List all KVM hosts
hosts: production, admin_hosts, kvm_hosts
become: yes
tasks:
- name: create file
file:
dest: /tmp/libvirtd_hosts
state: touch
delegate_to: localhost
- name: Copy VMs list
include_tasks: run_libvirtd_commands.yaml
- name: saving cumulative result
lineinfile:
line: '{{ ansible_hostname }} has {{ all_vms }}'
dest: /tmp/libvirtd_hosts
insertafter: EOF
delegate_to: localhost
when: groups["list_vms"] is defined and (groups["list_vms"] | length > 0)
Now if only I could clean up the output to filter out false positives (machines that don't have libvirtd status, and have an empty/no list of VMs, because the above doesn't really work.
But at least there is output from all the KVM hosts!
Answered By - Unpossible Answer Checked By - Robin (WPSolving Admin)