From ed8151bb5e8440160d0981c15c903e56c8b22e85 Mon Sep 17 00:00:00 2001
From: Kristof Provost <kp@FreeBSD.org>
Date: Thu, 4 May 2023 22:55:49 +0200
Subject: [PATCH] ansible: set up hostnames based on mac address

---
 ansible/playbook.yaml        |  7 +++++++
 ansible/scripts/set_hostname | 37 ++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100755 ansible/scripts/set_hostname

diff --git a/ansible/playbook.yaml b/ansible/playbook.yaml
index 472fe4e..5983ac9 100644
--- a/ansible/playbook.yaml
+++ b/ansible/playbook.yaml
@@ -1,3 +1,10 @@
+- name: Set hostname
+  hosts: localhost
+  vars:
+  tasks:
+    - name: set system hostname
+      ansible.builtin.script: scripts/set_hostname
+
 - name: test playbook
   hosts: domoticamachines
   tasks:
diff --git a/ansible/scripts/set_hostname b/ansible/scripts/set_hostname
new file mode 100755
index 0000000..8500549
--- /dev/null
+++ b/ansible/scripts/set_hostname
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+find_if()
+{
+	if ifconfig em0 1>/dev/null 2>/dev/null;
+	then
+		echo "em0"
+		return
+	fi
+
+	if ifconfig igb0 1>/dev/null 2>/dev/null;
+	then
+		echo "igb0"
+		return
+	fi
+
+	echo "lo0"
+}
+
+host_id()
+{
+	ifconfig `find_if` | awk '/ether/ { printf($2); }'
+}
+
+find_hostname()
+{
+	if [ "$(host_id)" == "52:54:00:12:34:56" ];
+	then
+		echo "qemu"
+		return
+	fi
+
+	echo "unknown"
+}
+
+sysrc hostname="$(find_hostname)"
+/etc/rc.d/hostname start
-- 
2.51.0