first draft

roles/virt_vm/tasks/create_vm.yml

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+---
+# VM PREPARATION
+
+- name: create vm storage
+  delegate_to: "{{ virt.host }}"
+  copy:
+    src: "{{ libvirt.images }}/{{ virt.image }}"
+    dest: "{{ libvirt.images }}/{{ inventory_hostname }}.qcow2"
+    force: no
+
+- name: set vm storage size
+  delegate_to: "{{ virt.host }}"
+  shell:
+    cmd: qemu-img resize "{{ libvirt.images }}/{{ inventory_hostname }}.qcow2" "{{ virt.hdd }}"
+
+- name: define vm
+  delegate_to: "{{ virt.host }}"
+  virt:
+    name: "{{ inventory_hostname }}"
+    xml: '{{ lookup("template", "fedora-34.xml.j2") }}'
+    command: define
+
+- name: make temp dir for cloud-init (CI)
+  delegate_to: "{{ virt.host }}"
+  tempfile:
+    state: directory
+  register: cidata
+
+
+# CLOUD-INIT PREPARATION
+
+- name: create CI-metadata
+  delegate_to: "{{ virt.host }}"
+  template:
+    src: ci-metadata.j2
+    dest: "{{ cidata.path }}/meta-data"
+
+- name: create CI-userdata
+  delegate_to: "{{ virt.host }}"
+  template:
+    src: ci-userdata.j2
+    dest: "{{ cidata.path }}/user-data"
+
+- name: create CI ISO
+  delegate_to: "{{ virt.host }}"
+  shell:
+    cmd: genisoimage -output "{{ libvirt.images }}/{{ inventory_hostname }}-cidata.iso" -volid cidata -joliet -rock user-data meta-data
+    chdir: "{{ cidata.path }}"
+
+# VM INIT
+
+- name: attach CI to vm
+  delegate_to: "{{ virt.host }}"
+  shell:
+    cmd: virsh attach-disk "{{ inventory_hostname }}" --source "{{ libvirt.images }}/{{ inventory_hostname }}-cidata.iso" --target sda --type cdrom --mode readonly --persistent
+
+# CLOUD-INIT CLEANUP
+
+- name: delete CI temp dir
+  delegate_to: "{{ virt.host }}"
+  file:
+    path: "{{ cidata.path }}"
+    state: absent
+    force: true
+
+- name: delete CI ISO
+  delegate_to: "{{ virt.host }}"
+  file:
+    path: "{{ libvirt.images }}/{{ inventory_hostname }}-cidata.iso"
+    state: absent
+

roles/virt_vm/tasks/main.yml

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+---
+- name: check vm existance
+  delegate_to: "{{ virt.host }}"
+  stat:
+    path: "{{ libvirt.images }}/{{ inventory_hostname }}.qcow2"
+    get_checksum: false
+    get_attributes: false
+    get_mime: false
+  register: vmimg
+
+- name: create vm
+  include_tasks: create_vm.yml
+  when: not vmimg.stat.exists