From 6546fc8fb7ed54da50f8c869cd435924fe091a50 Mon Sep 17 00:00:00 2001
From: Pim Kunis <pim@kunis.nl>
Date: Thu, 10 Aug 2023 23:25:15 +0200
Subject: [PATCH] monitor disk usage of ext4 partitions

---
 roles/fluentbit/fluent-bit.conf.j2 | 12 ++++++++++++
 roles/fluentbit/parsers.conf.j2    |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/roles/fluentbit/fluent-bit.conf.j2 b/roles/fluentbit/fluent-bit.conf.j2
index 83bfa71..af6b479 100644
--- a/roles/fluentbit/fluent-bit.conf.j2
+++ b/roles/fluentbit/fluent-bit.conf.j2
@@ -95,6 +95,12 @@
     Command free -m | tail -2 | tr '\n' ' '
     Interval_Sec 1
 
+[INPUT]
+    Name exec
+    Tag diskfree
+    Command df -lt ext4 | tail -n +2
+    Interval_Sec 600
+
 [OUTPUT]
     Name forward
     Match *
@@ -107,6 +113,12 @@
     Key_Name exec
     Parser free
 
+[FILTER]
+    Name parser
+    Match diskfree
+    Key_Name exec
+    Parser diskfree
+
 [FILTER]
     Name record_modifier
     Match *
diff --git a/roles/fluentbit/parsers.conf.j2 b/roles/fluentbit/parsers.conf.j2
index 86c51ae..649f85f 100644
--- a/roles/fluentbit/parsers.conf.j2
+++ b/roles/fluentbit/parsers.conf.j2
@@ -4,3 +4,9 @@
     Format regex
     Regex ^Mem:\s+(?<mem_total>\d+)\s+(?<mem_used>\d+)\s+(?<mem_free>\d+)\s+(?<mem_shared>\d+)\s+(?<mem_buff_cache>\d+)\s+(?<mem_available>\d+) Swap:\s+(?<swap_total>\d+)\s+(?<swap_used>\d+)\s+(?<swap_free>\d+)
     Types mem_total:integer mem_used:integer mem_free:integer mem_shared:integer mem_buff_cache:integer mem_available:integer swap_total:integer swap_used:integer
+
+[PARSER]
+    Name diskfree
+    Format regex
+    Regex ^\S+\s+\d+\s+(?<disk_used>\d+)\s+(?<disk_available>\d+)\s+(?<disk_percentage>\d+)%\s+(?<disk_mount>\S+)
+    Types disk_used:integer disk_available:integer disk_percentage:integer disk_mount:string