add zpool health check

files/nrpe/check_zpool_health

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# Nagios Exit Codes
+STATE_OK=0
+STATE_WARNING=1
+STATE_CRITICAL=2
+STATE_UNKNOWN=3
+
+POOL=$1
+
+if [ -z "$POOL" ]; then
+    echo "UNKNOWN - Usage: $0 <pool_name>"
+    exit $STATE_UNKNOWN
+fi
+
+ZSTATUS=$(zpool list -H -o health "$POOL" 2>/dev/null)
+
+if [ $? -ne 0 ]; then
+    echo "CRITICAL - ZFS pool '$POOL' not found!"
+    exit $STATE_CRITICAL
+fi
+
+if [ "$ZSTATUS" == "ONLINE" ]; then
+    echo "OK - ZFS pool $POOL is ONLINE"
+    exit $STATE_OK
+elif [ "$ZSTATUS" == "DEGRADED" ]; then
+    echo "WARNING - ZFS pool $POOL is DEGRADED"
+    exit $STATE_WARNING
+else
+    echo "CRITICAL - ZFS pool $POOL is $ZSTATUS !"
+    exit $STATE_CRITICAL
+fi