fix: Add /etc/default/grub if missing

tasks/main.yml

@@ -10,6 +10,31 @@
     use: "{{ (__bootloader_is_ostree | d(false)) |
       ternary('ansible.posix.rhel_rpm_ostree', omit) }}"
 
+- name: Get stat of {{ __bootloader_default_grub }}
+  stat:
+    path: "{{ __bootloader_default_grub }}"
+  register: __bootloader_default_grub_stat
+
+- name: If missing, add {{ __bootloader_default_grub }}
+  when: not __bootloader_default_grub_stat.stat.exists
+  block:
+    - name: Get bootloader args of the default kernel
+      shell: >-
+        set -euo pipefail;
+        grubby --info=DEFAULT | grep -oP 'args=\K(.*)'
+      register: __bootloader_default_args
+      changed_when: false
+
+    - name: Generate {{ __bootloader_default_grub }}
+      vars:
+        grub_cmdline_linux: "{{ __bootloader_default_args.stdout }}"
+      template:
+        src: etc_default_grub.j2
+        dest: "{{ __bootloader_default_grub }}"
+        owner: root
+        group: root
+        mode: 0644
+
 - name: Determine platform type
   stat:
     path: /sys/firmware/efi

templates/etc_default_grub.j2

@@ -0,0 +1,13 @@
+{{ ansible_managed | comment }}
+{{ "system_role:bootloader" | comment(prefix="", postfix="") }}
+GRUB_TIMEOUT={{ bootloader_timeout }}
+GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
+GRUB_DEFAULT=saved
+GRUB_DISABLE_SUBMENU=true
+GRUB_TERMINAL_OUTPUT="console"
+GRUB_CMDLINE_LINUX={{ grub_cmdline_linux }}
+GRUB_DISABLE_RECOVERY="true"
+{% if not (ansible_facts['os_family'] == 'RedHat' and
+ansible_facts['distribution_version'] is version('7', '>=')) %}
+GRUB_ENABLE_BLSCFG=true
+{% endif %}

tests/roles/linux-system-roles.bootloader/templates

@@ -0,0 +1 @@
+../../../templates/