From 715a2ed67470194681b1d6e4a4bebf2daf2350c3 Mon Sep 17 00:00:00 2001
From: Nils K <24257556+septatrix@users.noreply.github.com>
Date: Sun, 22 Sep 2024 19:34:41 +0200
Subject: [PATCH] Gracefully handle absence of environment configuration file
 (#3062)

node_exporter has reasonable defaults so it is able to start without explicit config.
Such a setup is common in /usr/-only images where /etc/ is an empty tmpfs upon boot.

Signed-off-by: Nils K <24257556+septatrix@users.noreply.github.com>
---
 examples/systemd/node_exporter.service | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/examples/systemd/node_exporter.service b/examples/systemd/node_exporter.service
index 82553e91..1ef24442 100644
--- a/examples/systemd/node_exporter.service
+++ b/examples/systemd/node_exporter.service
@@ -4,7 +4,9 @@ Requires=node_exporter.socket
 
 [Service]
 User=node_exporter
-EnvironmentFile=/etc/sysconfig/node_exporter
+# Fallback when environment file does not exist
+Environment=OPTIONS=
+EnvironmentFile=-/etc/sysconfig/node_exporter
 ExecStart=/usr/sbin/node_exporter --web.systemd-socket $OPTIONS
 
 [Install]