Avoid restarting a non-existent service

[chef.git] / cookbooks / prometheus / resources / exporter.rb

diff --git a/cookbooks/prometheus/resources/exporter.rb b/cookbooks/prometheus/resources/exporter.rb
index 5eca43f5cd274a40afbb583f5139af5a9094d679..ae0596885b07220efd3d9a1d09ace9c3e34be211 100644 (file)
--- a/cookbooks/prometheus/resources/exporter.rb
+++ b/cookbooks/prometheus/resources/exporter.rb
@@ -17,6 +17,8 @@
 # limitations under the License.
 #
 
+unified_mode true
+
 default_action :create
 
 property :exporter, :kind_of => String, :name_property => true
@@ -59,6 +61,8 @@ action :create do
     only_if { node[:prometheus][:mode] == "external" }
   end
 
+  node.default[:prometheus][:addresses][new_resource.exporter] = listen_address
+
   if new_resource.register_target
     node.default[:prometheus][:exporters][new_resource.port] = {
       :name => new_resource.exporter,
@@ -81,6 +85,7 @@ end
 action :restart do
   service service_name do
     action :restart
+    only_if { service_exists? }
   end
 end
 
@@ -93,6 +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