From b6907269e8e6a2cde2d32da7c95fa6b27ba8e7dc Mon Sep 17 00:00:00 2001
From: "CanbiZ (MickLesk)" <47820557+MickLesk@users.noreply.github.com>
Date: Tue, 31 Mar 2026 23:57:16 +0200
Subject: [PATCH] fix(graylog): set vm.max_map_count on host for OpenSearch
 (#13441)

OpenSearch requires vm.max_map_count >= 262144 but the Linux default
is 65530. Since this is not a namespaced sysctl, it must be set on
the Proxmox host rather than inside the unprivileged LXC.

Closes #13420
---
 ct/graylog.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ct/graylog.sh b/ct/graylog.sh
index 1c2256931..fca2d9e4c 100644
--- a/ct/graylog.sh
+++ b/ct/graylog.sh
@@ -64,6 +64,12 @@ function update_script() {
 }
 
 start
+
+if [[ $(sysctl -n vm.max_map_count 2>/dev/null) -lt 262144 ]]; then
+  sysctl -w vm.max_map_count=262144 >/dev/null 2>&1
+  echo "vm.max_map_count=262144" >/etc/sysctl.d/graylog.conf
+fi
+
 build_container
 description