update..

roles/common/tasks/apt.yml

@@ -177,10 +177,31 @@
   apt:
     name: "{{ apt_lxc_host_pkgs }}"
     state: "{{ apt_install_state }}"
-  when: apt_install_lxc_host_pkgs|bool
+  when: 
+    - groups['lxc_host']|string is search(inventory_hostname)
   tags:
     - apt-lxc-hosts-pkgs
 
+- name: (apt.yml) Install kvm_host related packages
+  apt:
+    name: "{{ apt_kvm_host_pkgs }}"
+    state: "{{ apt_install_state }}"
+  when: 
+    - groups['kvm_host']|string is search(inventory_hostname)
+  tags:
+    - apt-kvm-hosts-pkgs
+
+- name: (apt.yml) Install kvm_host related packages only debian 10 (buster)
+  apt:
+    name: "{{ apt_kvm_host_buster_pkgs }}"
+    state: "{{ apt_install_state }}"
+  when: 
+    - groups['kvm_host']|string is search(inventory_hostname)
+    - ansible_facts['distribution'] == "Debian"
+    - ansible_facts['distribution_major_version'] == "10"
+  tags:
+    - apt-kvm-hosts-pkgs
+
 - name: (apt.yml) Install compiler related packages
   apt:
     name: "{{ apt_compiler_pkgs }}"

roles/common/tasks/basic.yml

@@ -86,22 +86,3 @@
   tags:
     - systctl-config
 
-#- name: (basic.yml) Check file '/etc/systemd/system.conf' exists
-#  stat:
-#    path: /etc/systemd/system
-#  register: etc_systemd_system_conf
-#  when:
-#    - set_default_limit_nofile|bool == true
-#
-#- name: (basic.yml) Change DefaultLimitNOFILE to 1048576
-#  lineinfile:
-#    dest: /etc/systemd/system.conf
-#    state: present
-#    regexp: '^DefaultLimitNOFILE'
-#    line: 'DefaultLimitNOFILE=1048576'
-#    insertafter: '^#DefaultLimitNOFILE'
-#  when:
-#    - set_default_limit_nofile|bool == true
-#    - etc_systemd_system_conf.stat.exists == true
-#  tags:
-#    - systemd-nofiles