chore: update systemd setup to be smarter

ansible/roles/host_setup/defaults/main.yml

@@ -149,3 +149,8 @@ host_ntp_server:
 
 # Default tuned profile
 tuned_profile: throughput-performance
+
+# https://www.freedesktop.org/software/systemd/man/latest/systemd-system.conf.html
+systemd_CPUAffinity: numa
+systemd_NUMAPolicy: local
+systemd_NUMAMask: all

ansible/roles/host_setup/tasks/main.yml

@@ -56,6 +56,21 @@
     group: "root"
     mode: "0755"
 
+- name: Get systemd version
+  tags:
+    - always
+    - skip_ansible_lint
+  block:
+    - name: Pull systemd version
+      ansible.builtin.command: >-
+        /usr/bin/systemctl --version --no-pager
+      register: get_systemd_version
+      changed_when: false
+      check_mode: false
+    - name: Set systemd version
+      ansible.builtin.set_fact:
+        systemd_version: "{{ get_systemd_version.stdout_lines[0].split()[-1] }}"
+
 - name: Add DefaultEnvironment to systemd
   ansible.builtin.template:
     src: genestack-default-environment.conf.j2

ansible/roles/host_setup/templates/genestack-default-environment.conf.j2

@@ -7,6 +7,8 @@
 {% endfor %}
 DefaultEnvironment = {{ envList | join(' ') }}
 DefaultLimitNOFILE = 65536:524288
-CPUAffinity = numa
-NUMAPolicy = local
-NUMAMask = all
+CPUAffinity = {{ (systemd_NUMAMask == "all") | ternary("", systemd_CPUAffinity) }}
+{% if (systemd_version | int) >= 243 %}
+NUMAPolicy = {{ systemd_NUMAPolicy }}
+NUMAMask = {{ systemd_NUMAMask }}
+{% endif %}