From 407af9ada56da5329b219184f5bb93dce7fff362 Mon Sep 17 00:00:00 2001
From: Satyam Sundaram <satyamsundaram01@gmail.com>
Date: Sat, 28 Sep 2024 07:25:38 +0000
Subject: [PATCH] feat(Helm): Allows to configure client_max_body_size

---
 docs/sources/setup/install/helm/reference.md | 9 +++++++++
 production/helm/loki/CHANGELOG.md            | 1 +
 production/helm/loki/templates/_helpers.tpl  | 2 +-
 production/helm/loki/values.yaml             | 2 ++
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/docs/sources/setup/install/helm/reference.md b/docs/sources/setup/install/helm/reference.md
index b74a559b12e7..3e7a1cc6ce61 100644
--- a/docs/sources/setup/install/helm/reference.md
+++ b/docs/sources/setup/install/helm/reference.md
@@ -4213,6 +4213,15 @@ false
 			<td><pre lang="json">
 {}
 </pre>
+</td>
+		</tr>
+		<tr>
+			<td>gateway.nginxConfig.clientMaxBodySize</td>
+			<td>string</td>
+			<td>Allows customizing the `client_max_body_size` directive</td>
+			<td><pre lang="json">
+"4M"
+</pre>
 </td>
 		</tr>
 		<tr>
diff --git a/production/helm/loki/CHANGELOG.md b/production/helm/loki/CHANGELOG.md
index 18d0aca93a3d..695b03d86635 100644
--- a/production/helm/loki/CHANGELOG.md
+++ b/production/helm/loki/CHANGELOG.md
@@ -24,6 +24,7 @@ Entries should include a reference to the pull request that introduced the chang
 ## 6.15.0
 
 - [ENHANCEMENT] Allow setting annotations for memberlist and query-scheduler-discovery services
+- [ENHANCEMENT] Allow to customize `client_max_body_size` when using Loki Gateway. #12924
 
 ## 6.14.1
 
diff --git a/production/helm/loki/templates/_helpers.tpl b/production/helm/loki/templates/_helpers.tpl
index 9a4ab135db92..e930432adfa5 100644
--- a/production/helm/loki/templates/_helpers.tpl
+++ b/production/helm/loki/templates/_helpers.tpl
@@ -733,7 +733,7 @@ http {
   uwsgi_temp_path       /tmp/uwsgi_temp;
   scgi_temp_path        /tmp/scgi_temp;
 
-  client_max_body_size  4M;
+  client_max_body_size  {{ .Values.gateway.nginxConfig.clientMaxBodySize }};
 
   proxy_read_timeout    600; ## 10 minutes
   proxy_send_timeout    600;
diff --git a/production/helm/loki/values.yaml b/production/helm/loki/values.yaml
index ab62323c95f8..050524662e6a 100644
--- a/production/helm/loki/values.yaml
+++ b/production/helm/loki/values.yaml
@@ -1073,6 +1073,8 @@ gateway:
     # -- Allows appending custom configuration to the http block, passed through the `tpl` function to allow templating
     httpSnippet: >-
       {{ if .Values.loki.tenants }}proxy_set_header X-Scope-OrgID $remote_user;{{ end }}
+    # -- Allows customizing the `client_max_body_size` directive
+    clientMaxBodySize: 4M
     # -- Whether ssl should be appended to the listen directive of the server block or not.
     ssl: false
     # -- Override Read URL