ansible: Install atop on Debian based hosts and default to 10s intervals

atop is useful to be able to debug what happened historically.

Author: chantra

ansible/roles/base/defaults/main.yml

@@ -1,7 +1,10 @@
 ---
 __base_packages:
+  - atop
   - curl
   - git
   - jq
   - python3-pip
   - vim
+
+atop_interval: 10

ansible/roles/base/tasks/setup-Debian.yml

@@ -16,3 +16,45 @@
     state: stopped
     enabled: no
     masked: yes
+
+# When atopacct is running, it holds semaphore that prevent atop from working
+# Further troubleshooting would need to be done, but atop can do just fine on its own.
+# Note that even stopping `atopacct` leaves semaphores... either reboot or clean them
+# manually.
+# Possibly related: https://lkml.org/lkml/2016/12/19/182
+- name: Disable atopacct
+  become: true
+  ansible.builtin.service:
+    name: atopacct
+    state: stopped
+    enabled: false
+
+- name: Setup atop
+  become: true
+  ansible.builtin.copy:
+    dest: "/etc/default/atop"
+    content: |
+      # This file is generated by Ansible, do not modify
+      LOGOPTS="-R"
+      LOGINTERVAL={{ atop_interval }}
+      LOGGENERATIONS=28
+      LOGPATH=/var/log/atop
+    mode: 0644
+    owner: root
+    group: root
+  register: atop_conf
+
+
+- name: Start and Enable atop
+  become: yes
+  ansible.builtin.service:
+    name: atop
+    state: started
+    enabled: yes
+
+- name: restart atop
+  become: yes
+  service:
+    name: atop
+    state: restarted
+  when: atop_conf.changed