From 0ca93dff41ff3a9889a5847ff0f854cf5cef1185 Mon Sep 17 00:00:00 2001
From: Tobias Wiese <tobias@tobiaswiese.com>
Date: Mon, 11 May 2020 20:38:42 +0200
Subject: service: basic node health

Check for basic node health including ping, disk and swap.

Also check with the package manager, that the system is up to date.

Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
---
 zones.d/global-templates/services.conf | 57 ++++++++++++++++++++++++++++++++++
 zones.d/master/hosts.conf              |  4 +++
 zones.d/master/services.conf           | 34 ++++++++++++++++++++
 3 files changed, 95 insertions(+)
 create mode 100644 zones.d/global-templates/services.conf
 create mode 100644 zones.d/master/services.conf

diff --git a/zones.d/global-templates/services.conf b/zones.d/global-templates/services.conf
new file mode 100644
index 0000000..9081f19
--- /dev/null
+++ b/zones.d/global-templates/services.conf
@@ -0,0 +1,57 @@
+template Service "generic-service" { }
+
+
+/**
+ * Basic node health checks
+ */
+
+apply Service "disk" {
+	import "generic-service"
+
+	check_command = "disk"
+
+	assign where host.vars.kernel == "linux"
+}
+
+apply Service "icinga" {
+	import "generic-service"
+
+	check_command = "icinga"
+
+	assign where host.vars.kernel == "linux"
+}
+
+apply Service "load" {
+	import "generic-service"
+
+	check_command = "load"
+
+	assign where host.vars.kernel == "linux"
+}
+
+apply Service "procs" {
+	import "generic-service"
+
+	check_command = "procs"
+
+	assign where host.vars.kernel == "linux"
+}
+
+apply Service "swap" {
+	import "generic-service"
+
+	check_command = "swap"
+
+	assign where host.vars.kernel == "linux"
+}
+
+/* OS specific basic health checks */
+apply Service "apt" {
+	import "generic-service"
+
+	check_command = "apt"
+
+	volatile = true
+
+	assign where host.vars.os_family == "debian"
+}
diff --git a/zones.d/master/hosts.conf b/zones.d/master/hosts.conf
index 8a71c7e..567fdb7 100644
--- a/zones.d/master/hosts.conf
+++ b/zones.d/master/hosts.conf
@@ -3,4 +3,8 @@ object Host "new-babbage.server.tobiaswiese.net" {
 
 	address = "185.244.192.195"
 	address6 = "2a03:4000:27:5fc::1"
+
+	vars.os = "debian"
+	vars.os_family = "debian"
+	vars.kernel = "linux"
 }
diff --git a/zones.d/master/services.conf b/zones.d/master/services.conf
new file mode 100644
index 0000000..25ca1c5
--- /dev/null
+++ b/zones.d/master/services.conf
@@ -0,0 +1,34 @@
+template Service "generic-network-service" {
+	import "generic-service"
+	zone = "master"
+}
+
+/**
+ * Basic node health checks
+ */
+
+apply Service "ping4" {
+	import "generic-network-service"
+
+	check_command = "ping4"
+
+	assign where host.address
+}
+
+apply Service "ping6" {
+	import "generic-network-service"
+
+	check_command = "ping6"
+
+	assign where host.address6
+}
+
+apply Service "ssh" {
+	import "generic-network-service"
+
+	check_command = "ssh"
+
+	vars.ssh_port = host.vars.ssh_port || 222
+
+	assign where (host.address || host.address6) && host.vars.kernel == "linux"
+}
-- 
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