dhcp: restart server on config update

roles/isc-dhcp-server/handlers/main.yml

@@ -0,0 +1,4 @@
+- name: restart dhcpd
+  systemd:
+    state: restarted
+    name: isc-dhcp-server

roles/isc-dhcp-server/tasks/main.yml

@@ -7,6 +7,7 @@
   register: apt_result
   retries: 3
   until: apt_result is succeeded
+  notify: restart dhcpd
 
 - name: Ensure dhcp log directory exists
   file:
@@ -50,6 +51,7 @@
     src: default/isc-dhcp-server.j2
     dest: /etc/default/isc-dhcp-server
     mode: 0644
+  notify: restart dhcpd
 
 - name: Configure dhcp-failover.conf
   template:
@@ -57,9 +59,11 @@
     dest: /etc/dhcp/dhcp-failover.conf
     mode: 0600
   when: dhcp_failover is defined
+  notify: restart dhcpd
 
 - name: Configure dhcpd.conf
   template:
     src: dhcp/dhcpd.conf.j2
     dest: /etc/dhcp/dhcpd.conf
     mode: 0600
+  notify: restart dhcpd

roles/isc-dhcp-server/templates/dhcp/dhcpd.conf.j2

@@ -1,5 +1,3 @@
-# {{ ansible_managed }}
-
 default-lease-time 86400;
 max-lease-time 86400;