From: Tom Hughes <tom@compton.nu>
Date: Wed, 17 Nov 2021 09:09:02 +0000 (+0000)
Subject: Avoid restarting a non-existent service
X-Git-Url: https://git.openstreetmap.org/chef.git/commitdiff_plain/cd3653225c75a743806ae73b473eda8a2a93724e

Avoid restarting a non-existent service
---

diff --git a/cookbooks/prometheus/resources/exporter.rb b/cookbooks/prometheus/resources/exporter.rb
index df5304b3c..ae0596885 100644
--- a/cookbooks/prometheus/resources/exporter.rb
+++ b/cookbooks/prometheus/resources/exporter.rb
@@ -85,6 +85,7 @@ end
 action :restart do
   service service_name do
     action :restart
+    only_if { service_exists? }
   end
 end
 
@@ -97,6 +98,10 @@ action_class do
     end
   end
 
+  def service_exists?
+    File.exist?("/etc/systemd/system/#{service_name}.service")
+  end
+
   def executable_path
     "/opt/prometheus/exporters/#{new_resource.exporter}/#{new_resource.exporter}_exporter"
   end