Avoid unnecessary reboots

Author: tpdownes

ansible/roles/kernel/defaults/main.yml

@@ -0,0 +1,16 @@
+---
+# Copyright (C) SchedMD LLC.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+reboot: true

ansible/roles/kernel/tasks/os/debian.yml

@@ -12,16 +12,27 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+- block:
+  - name: Reboot
+    reboot:
 
-- name: Reboot
-  reboot:
+  - name: Gather facts after reboot
+    setup:
 
-- name: Gather facts after reboot
-  setup:
+  when: reboot
 
 - name: Install {{ansible_os_family}} Family Kernel Packages
   apt:
     name:
     - linux-headers-{{ansible_kernel}}
     state: latest
     update_cache: yes
+  when: reboot
+
+- name: Install {{ansible_os_family}} Family Kernel Packages
+  apt:
+    name:
+    - linux-headers-generic
+    state: latest
+    update_cache: yes
+  when: not reboot

ansible/roles/kernel/tasks/os/redhat-7.yml

@@ -13,11 +13,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-- name: Reboot
-  reboot:
+- block:
+  - name: Reboot
+    reboot:
 
-- name: Gather facts after reboot
-  setup:
+  - name: Gather facts after reboot
+    setup:
+
+  when: reboot
 
 - name: Install {{ansible_os_family}} Family Kernel Packages
   yum:

ansible/roles/kernel/tasks/os/redhat-8.yml

@@ -26,8 +26,11 @@
     state: latest
     update_cache: yes
 
-- name: Reboot
-  reboot:
+- block:
+  - name: Reboot
+    reboot:
 
-- name: Gather facts after reboot
-  setup:
+  - name: Gather facts after reboot
+    setup:
+
+  when: reboot