feat: job specific file sd configs

playbooks/templates/link_sd.yml

@@ -1,8 +1,10 @@
 ---
-- targets:
 {% for host in groups['cdr_link'] %}
-    - "{{ host }}:9100"
-{% endfor %}
+- targets:
+    - "{{ hostvars[host]['node_exporter_tailscale_ipv4'].stdout }}:9100"
   labels:
+    instance: "{{ host }}"
+    hostname: "{{ host }}"
     job: node
     app: link
+{% endfor %}