From 1c6e76e1970ecd7bda7d369ff80b37d064d16c58 Mon Sep 17 00:00:00 2001
From: Andrew Feierabend <andrew.feierabend@mongodb.com>
Date: Mon, 1 Feb 2021 14:38:20 -0500
Subject: [PATCH] DOCS-13741 add warning to ttlMonitorEnabled param

---
 source/reference/parameters.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/source/reference/parameters.txt b/source/reference/parameters.txt
index c3c85901088..8b2b1474137 100644
--- a/source/reference/parameters.txt
+++ b/source/reference/parameters.txt
@@ -643,6 +643,8 @@ General Parameters
 
    |mongod-only|
 
+   *Default*: ``true``
+
    To support :doc:`TTL Indexes </core/index-ttl>`, :binary:`~bin.mongod`
    instances have a background thread that is responsible for deleting
    documents from collections with TTL indexes.
@@ -662,6 +664,13 @@ General Parameters
 
       mongod --setParameter ttlMonitorEnabled=false
 
+   .. important::
+
+      Do not run production :binary:`~bin.mongod` instances with
+      ``ttlMonitorEnabled`` disabled, except under guidance from MongoDB
+      support. Preventing TTL document removal can negatively impact
+      MongoDB internal system operations that depend on
+      :doc:`TTL Indexes </core/index-ttl>`.
 
 .. parameter:: disableJavaScriptJIT