add resolv.conf task

playbooks/host_maintenance/resolv_conf.yaml

@@ -0,0 +1,7 @@
+- name: host maintenance - setup resolv.conf
+  hosts: '{{target|default("all")}}'
+  become: true
+  tasks:
+    - ansible.builtin.include_role:
+        name: mylimbo.globals.host_maintenance
+        tasks_from: resolv_conf

roles/host_maintenance/tasks/resolv_conf.yaml

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+# source https://oneuptime.com/blog/post/2026-02-21-how-to-use-ansible-to-manage-etc-resolv-conf/view
+# vars:
+#   resolv_conf:
+#       nameservers:
+#         - x.x.x.x
+#       search_domains:
+#         - local.lan
+- name: Deploy resolv.conf
+  ansible.builtin.template:
+    src: templates/resolv.conf.j2
+    dest: /etc/resolv.conf
+    mode: '0644'
+  when: "resolv_conf is defined"
+
+# todo tasks:
+# systemd-resolvd:systemctl restart systemd-resolved
+# clear cache: resolvectl flush-caches

roles/host_maintenance/templates/resolv.conf.j2

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+# templates/resolv.conf.j2
+# Managed by Ansible - DO NOT EDIT MANUALLY
+# Changes will be overwritten on next Ansible run
+
+{% if resolv_conf.nameservers is defined and resolv_conf.nameservers | length > 0 %}
+{% for ns in resolv_conf.nameservers %}
+nameserver {{ ns }}
+{% endfor %}
+{% endif %}
+
+{% if resolv_conf.search_domains is defined and resolv_conf.search_domains | length > 0 %}
+search {{ resolv_conf.search_domains | join(' ') }}
+{% endif %}
+
+{% if resolv_conf.resolver_options is defined and resolv_conf.resolver_options | length > 0 %}
+options {{ resolv_conf.resolver_options | join(' ') }}
+{% endif %}