From 53990168fd4b14ca2cdb16febc37b9cdc5b268c8 Mon Sep 17 00:00:00 2001
From: donghun-cho <donghun.cho@navercorp.com>
Date: Tue, 27 Aug 2024 10:46:43 +0900
Subject: [PATCH] [#11417] Add telelgraf proctstat fd metric

---
 .../src/main/resources/pinot-web/telegraf-metric.yml  | 11 ++++++++++-
 .../metric/src/main/telegraf/pinpoint-telegraf.conf   | 10 +++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/metric-module/metric/src/main/resources/pinot-web/telegraf-metric.yml b/metric-module/metric/src/main/resources/pinot-web/telegraf-metric.yml
index eedf01b69b08..be7a57e61d6b 100644
--- a/metric-module/metric/src/main/resources/pinot-web/telegraf-metric.yml
+++ b/metric-module/metric/src/main/resources/pinot-web/telegraf-metric.yml
@@ -115,4 +115,13 @@ mappings:
       - name: "active"
         matchingRule: ANY_ONE
       - name: "waiting"
-        matchingRule: ANY_ONE
\ No newline at end of file
+        matchingRule: ANY_ONE
+
+  - definitionId: "processFd"
+    name: "procstat"
+    title: "process fd count"
+    grouping: "TAG"
+    unit: "count"
+    fields:
+      - name: "num_fds"
+        matchingRule: PASSED_ALL
diff --git a/metric-module/metric/src/main/telegraf/pinpoint-telegraf.conf b/metric-module/metric/src/main/telegraf/pinpoint-telegraf.conf
index c132b82d94ad..1a096b5a0abf 100644
--- a/metric-module/metric/src/main/telegraf/pinpoint-telegraf.conf
+++ b/metric-module/metric/src/main/telegraf/pinpoint-telegraf.conf
@@ -390,4 +390,12 @@
 # Read metrics about system load & uptime
 [[inputs.system]]
   ## Uncomment to remove deprecated metrics.
-  fielddrop = ["uptime_format"]
\ No newline at end of file
+  fielddrop = ["uptime_format"]
+
+# Read metrics about process fd (telegraf may need to be ran as root)
+# [[inputs.procstat]]
+#   # pattern as argument for pgrep (ie, pgrep -f <pattern>)
+#   pattern = "process.identifier"
+#
+#   # only send num_fds metrics
+#   fieldpass = ["num_fds"]
\ No newline at end of file