added option so apt cache update can be disabled

defaults/main.yml

@@ -54,6 +54,10 @@ slurm_group:
 # EPEL is required to install slurm packages and some dependencies on CentOS/RedHat systems
 slurm_add_epel_repo: true
 
+# By default we update the apt cache on Debian/Ubuntu but you can disable it
+# for faster execution after the initial setup
+slurm_update_apt_cache: true
+
 # You can set this to true to enable the openhpc yum repos on centos
 # If you plan to use packages from openhpc you should also update the list of packages for RedHat below
 slurm_add_openhpc_repo: false

tasks/main.yml

@@ -45,6 +45,14 @@
     - not ansible_virtualization_type == "docker"       # we cannot modify /etc/hosts in container
     - not ansible_virtualization_type == "containerd"   # we cannot modify /etc/hosts in container
 
+- name: Update apt cache on Debian/Ubuntu systems
+  ansible.builtin.apt:
+    update_cache: yes
+    cache_valid_time: 600
+  when:
+    - ansible_os_family == 'Debian'
+    - slurm_update_apt_cache
+  changed_when: false
 
 - name: Download slurm config from git if "slurm_config_git_repo" is defined
   block:
@@ -66,13 +74,6 @@
 
   when: slurm_config_git_repo is defined
 
-- name: Make sure the apt cache is updated on Debian/Ubuntu systems
-  ansible.builtin.apt:
-    update_cache: yes
-    cache_valid_time: 600
-  when: ansible_os_family == 'Debian'
-  changed_when: false
-
 - name: Install EPEL repository
   ansible.builtin.yum:
     name: epel-release