From e18570319824aefaa1deb314701b2c756393f29f Mon Sep 17 00:00:00 2001
From: Markus Hauschild <markus@moepman.eu>
Date: Fri, 19 Apr 2024 15:10:44 +0200
Subject: [PATCH] kea: new role (replaces dhcpd) [WIP]

---
 roles/kea/handlers/main.yml               |   4 +
 roles/kea/tasks/main.yml                  |  17 +++
 roles/kea/templates/kea/kea-dhcp4.conf.j2 | 155 ++++++++++++++++++++++
 3 files changed, 176 insertions(+)
 create mode 100644 roles/kea/handlers/main.yml
 create mode 100644 roles/kea/tasks/main.yml
 create mode 100644 roles/kea/templates/kea/kea-dhcp4.conf.j2

diff --git a/roles/kea/handlers/main.yml b/roles/kea/handlers/main.yml
new file mode 100644
index 0000000..b3765c6
--- /dev/null
+++ b/roles/kea/handlers/main.yml
@@ -0,0 +1,4 @@
+---
+
+- name: Restart kea-dhcp4-server
+  service: name=kea-dhcp4-server state=restarted
diff --git a/roles/kea/tasks/main.yml b/roles/kea/tasks/main.yml
new file mode 100644
index 0000000..8b3df6a
--- /dev/null
+++ b/roles/kea/tasks/main.yml
@@ -0,0 +1,17 @@
+---
+
+- name: Install the kea dhcp server
+  apt:
+    name:
+    - kea-dhcp4-server
+    - kea-dhcp-ddns-server
+
+- name: Configure the kea dhcp server
+  template:
+    src: kea/kea-dhcp4.conf.j2
+    dest: /etc/kea/kea-dhcp4.conf
+#   validate: kea-dhcp4 -t %s
+  notify: Restart kea-dhcp4-server
+
+- name: Start the kea dhcp server
+  service: name=kea-dhcp4-server state=started enabled=yes
diff --git a/roles/kea/templates/kea/kea-dhcp4.conf.j2 b/roles/kea/templates/kea/kea-dhcp4.conf.j2
new file mode 100644
index 0000000..982f313
--- /dev/null
+++ b/roles/kea/templates/kea/kea-dhcp4.conf.j2
@@ -0,0 +1,155 @@
+{
+
+"Dhcp4": {
+    "interfaces-config": {
+        "interfaces": [ "{{ ansible_default_ipv4['interface'] }}" ]
+    },
+
+    "control-socket": {
+        "socket-type": "unix",
+        "socket-name": "/run/kea/kea4-ctrl-socket"
+    },
+
+    "lease-database": {
+        "type": "memfile",
+        "lfc-interval": 3600
+    },
+
+    "expired-leases-processing": {
+        "reclaim-timer-wait-time": 10,
+        "flush-reclaimed-timer-wait-time": 25,
+        "hold-reclaimed-time": 3600,
+        "max-reclaim-leases": 100,
+        "max-reclaim-time": 250,
+        "unwarned-reclaim-cycles": 5
+    },
+
+    "renew-timer": 900,
+    "rebind-timer": 1800,
+    "valid-lifetime": 3600,
+
+    "option-data": [
+        {
+            "name": "domain-name-servers",
+            "data": "{{ name_servers | join(', ') }}"
+        },
+
+        {
+            "name": "domain-name",
+            "data": "binary.kitchen"
+        },
+
+        {
+            "name": "domain-search",
+            "data": "binary.kitchen"
+        }
+    ],
+
+    "subnet4": [
+        {
+            "subnet": "172.23.1.0/24",
+
+            "option-data": [
+                {
+                    "name": "routers",
+                    "data": "172.23.1.1"
+                }
+            ],
+
+            "reservations": [
+                {
+                    "hw-address": "44:48:c1:ce:a9:00",
+                    "ip-address": "172.23.1.41",
+                    "hostname": "ap01"
+                },
+
+                {
+                    "hw-address": "74:9e:75:ce:93:54",
+                    "ip-address": "172.23.1.44",
+                    "hostname": "ap04"
+                },
+
+                {
+                    "hw-address": "bc:9f:e4:c3:6f:aa",
+                    "ip-address": "172.23.1.45",
+                    "hostname": "ap05"
+                },
+
+                {
+                    "hw-address": "94:b4:0f:c0:1d:a0",
+                    "ip-address": "172.23.1.46",
+                    "hostname": "ap06"
+                }
+            ]
+        },
+
+        {
+            "subnet": "172.23.2.0/24",
+
+            "option-data": [
+                {
+                    "name": "routers",
+                    "data": "172.23.2.1"
+                }
+            ]
+        },
+
+        {
+            "subnet": "172.23.3.0/24",
+
+            "pools": [ { "pool": "172.23.3.10 - 172.23.3.230" } ],
+
+            "option-data": [
+                {
+                    "name": "routers",
+                    "data": "172.23.3.1"
+                },
+
+                {
+                    "name": "domain-search",
+                    "data": "binary.kitchen, users.binary.kitchen"
+                }
+            ],
+
+            "reservations": [
+                {
+                    "hw-address": "1a:1b:1c:1d:1e:1f",
+                    "ip-address": "172.23.3.201",
+                    "hostname": "special-snowflake",
+                    "option-data": [ {
+                        "name": "domain-name-servers",
+                        "data": "10.1.1.202, 10.1.1.203"
+                    } ]
+                }
+            ]
+        },
+
+        {
+            "subnet": "172.23.4.0/24",
+
+            "pools": [ { "pool": "172.23.4.10 - 172.23.4.240" } ],
+
+            "option-data": [
+                {
+                    "name": "routers",
+                    "data": "172.23.4.1"
+                }
+            ]
+        }
+    ],
+
+    "loggers": [
+        {
+            "name": "kea-dhcp4",
+            "output_options": [
+                {
+                    "output": "stdout",
+                    "pattern": "%-5p %m\n"
+                }
+            ],
+            "severity": "INFO",
+            "debuglevel": 0
+        }
+    ]
+}
+}