centos kernel grub

tasks/kernel/CentOS.yml

@@ -20,3 +20,15 @@
   yum:
     name: kmod-wireguard,wireguard-dkms
     state: absent
+- name: change grub
+  become: true
+  lineinfile:
+    path: /etc/default/grub
+    regexp: '^GRUB_DEFAULT='
+    line: 'GRUB_DEFAULT=0'
+    backrefs: true
+  register: change_grub_result
+- name: make grub config
+  when: change_grub_result.changed
+  become: true
+  shell: grub2-mkconfig -o /boot/grub2/grub.cfg