From 99c1451bdb8dc765e326e1d7db6ed3545420267f Mon Sep 17 00:00:00 2001
From: Markus Hauschild <markus@moepman.eu>
Date: Mon, 27 Mar 2017 17:42:48 +0200
Subject: [PATCH] Add dhcp server role

---
 roles/dhcpd/defaults/main.yml       |  6 ++++++
 roles/dhcpd/handlers/main.yml       |  4 ++++
 roles/dhcpd/tasks/main.yml          | 11 +++++++++++
 roles/dhcpd/templates/dhcpd.conf.j2 | 28 ++++++++++++++++++++++++++++
 site.yml                            |  1 +
 5 files changed, 50 insertions(+)
 create mode 100644 roles/dhcpd/defaults/main.yml
 create mode 100644 roles/dhcpd/handlers/main.yml
 create mode 100644 roles/dhcpd/tasks/main.yml
 create mode 100644 roles/dhcpd/templates/dhcpd.conf.j2

diff --git a/roles/dhcpd/defaults/main.yml b/roles/dhcpd/defaults/main.yml
new file mode 100644
index 0000000..1e577dd
--- /dev/null
+++ b/roles/dhcpd/defaults/main.yml
@@ -0,0 +1,6 @@
+---
+
+dhcp_interface: br-{{ site_code }}
+dhcp_first: "{{ batman_ipv4 | ipaddr('512') | ipaddr('address') }}"
+dhcp_last: "{{ batman_ipv4 | ipaddr('2558') | ipaddr('address') }}"
+name_server: "{{ batman_ipv4 | ipaddr('address') }}"
diff --git a/roles/dhcpd/handlers/main.yml b/roles/dhcpd/handlers/main.yml
new file mode 100644
index 0000000..6384943
--- /dev/null
+++ b/roles/dhcpd/handlers/main.yml
@@ -0,0 +1,4 @@
+---
+
+- name: Restart isc-dhcp-server
+  service: name=isc-dhcp-server state=restarted
diff --git a/roles/dhcpd/tasks/main.yml b/roles/dhcpd/tasks/main.yml
new file mode 100644
index 0000000..e3d6d5d
--- /dev/null
+++ b/roles/dhcpd/tasks/main.yml
@@ -0,0 +1,11 @@
+---
+
+- name: Install dhcp server
+  apt: name=isc-dhcp-server state=latest
+
+- name: Configure dhcp server
+  template: src=dhcpd.conf.j2 dest=/etc/dhcp/dhcpd.conf
+  notify: Restart isc-dhcp-server
+
+- name: Start the dhcp server
+  service: name=isc-dhcp-server state=started enabled=yes
diff --git a/roles/dhcpd/templates/dhcpd.conf.j2 b/roles/dhcpd/templates/dhcpd.conf.j2
new file mode 100644
index 0000000..d8b4ca2
--- /dev/null
+++ b/roles/dhcpd/templates/dhcpd.conf.j2
@@ -0,0 +1,28 @@
+# dhcpd.conf
+
+# option definitions common to all supported networks...
+option domain-name "{{ site_domain }}";
+option domain-name-servers {{ name_server }};
+
+default-lease-time 3600;
+max-lease-time 14400;
+
+# Use this to enble / disable dynamic dns updates globally.
+ddns-update-style none;
+
+# If this DHCP server is the official DHCP server for the local
+# network, the authoritative directive should be uncommented.
+authoritative;
+
+# Use this to send dhcp log messages to a different log file (you also
+# have to hack syslog.conf to complete the redirection).
+log-facility local7;
+
+
+# Freifunk Regensburg
+subnet {{ batman_ipv4 | ipaddr('network') }} netmask {{ batman_ipv4 | ipaddr('netmask') }} {
+  option routers {{ batman_ipv4 | ipaddr('address') }};
+  pool {
+    range {{ dhcp_first }} {{ dhcp_last }} ;
+  }
+}
diff --git a/site.yml b/site.yml
index 0318da6..60486c1 100644
--- a/site.yml
+++ b/site.yml
@@ -14,6 +14,7 @@
   - fastd
   - mesh-interfaces
   - dns
+  - dhcpd
 
 - name: Setup confluence server
   hosts: confluence.regensburg.freifunk.net