Move tarball compression to background service;Housekeeping

ansible/roles/firstboot/files/ansible_payload/roles/cleanup/tasks/cron.yml

@@ -0,0 +1,4 @@
+- name: Disable crontab job
+  ansible.builtin.cron:
+    name: firstboot
+    state: absent

ansible/roles/firstboot/files/ansible_payload/roles/cleanup/tasks/main.yml

@@ -1,10 +1,5 @@
-- name: Compress tarballs
-  community.general.archive:
-    dest: /opt/metacluster/container-images/image-tarballs.tgz
-    path: /opt/metacluster/container-images/*.tar
-    format: gz
-    remove: yes
-  ignore_errors: yes
+- import_tasks: service.yml
+- import_tasks: cron.yml
 
 - name: Cleanup tempfile
   ansible.builtin.file:
@@ -12,11 +7,6 @@
     state: absent
   when: kubeconfig.path is defined
 
-- name: Disable crontab job
-  ansible.builtin.cron:
-    name: firstboot
-    state: absent
-
 - name: Reboot host
   ansible.builtin.shell:
     cmd: /usr/sbin/reboot now

ansible/roles/firstboot/files/ansible_payload/roles/cleanup/tasks/service.yml

@@ -0,0 +1,24 @@
+- name: Create tarball compression service
+  ansible.builtin.template:
+    src: "{{ item.src }}"
+    dest: "{{ item.dest }}"
+    owner: root
+    group: root
+    mode: "{{ item.mode | default(omit) }}"
+  vars:
+    _template:
+      service:
+        name: compressTarballs
+        executable: /opt/firstboot/compresstarballs.sh
+        workingdir: /opt/metacluster/container-images/
+  loop:
+    - src: compresstarballs.j2
+      dest: "{{ _template.service.executable }}"
+      mode: o+x
+    - src: systemdunit.j2
+      dest: /etc/systemd/system/{{ _template.service.name }}.service
+
+- name: Enable tarball compression service
+  ansible.builtin.systemd:
+    name: compressTarballs
+    enabled: yes

ansible/roles/firstboot/files/ansible_payload/templates/compresstarballs.j2

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# Change working directory
+popd {{ _template.service.workingdir }}
+
+# Compress *.tar files
+if tar -czf image-tarballs.tgz *.tar; then
+    # Disable systemd unit
+    systemctl disable {{ _template.service.name }}
+fi

ansible/roles/firstboot/files/ansible_payload/templates/systemdunit.j2

@@ -0,0 +1,9 @@
+[Unit]
+Description={{ _template.service.name }}
+
+[Service]
+ExecStart={{ _template.service.executable }}
+Nice=10
+
+[Install]
+WantedBy=multi-user.target