Added check for STATSD_ADDR setting to emit a warning and proceed rather than crashing if the address is unreachable (#30691)

config/initializers/statsd.rb

@@ -3,13 +3,17 @@
 if ENV['STATSD_ADDR'].present?
   host, port = ENV['STATSD_ADDR'].split(':')
 
-  statsd = Statsd.new(host, port)
-  statsd.namespace = ENV.fetch('STATSD_NAMESPACE') { ['Mastodon', Rails.env].join('.') }
+  begin
+    statsd = Statsd.new(host, port)
+    statsd.namespace = ENV.fetch('STATSD_NAMESPACE') { ['Mastodon', Rails.env].join('.') }
 
-  NSA.inform_statsd(statsd) do |informant|
-    informant.collect(:action_controller, :web)
-    informant.collect(:active_record, :db)
-    informant.collect(:active_support_cache, :cache)
-    informant.collect(:sidekiq, :sidekiq) if ENV['STATSD_SIDEKIQ'] == 'true'
+    NSA.inform_statsd(statsd) do |informant|
+      informant.collect(:action_controller, :web)
+      informant.collect(:active_record, :db)
+      informant.collect(:active_support_cache, :cache)
+      informant.collect(:sidekiq, :sidekiq) if ENV['STATSD_SIDEKIQ'] == 'true'
+    end
+  rescue
+    Rails.logger.warn("statsd address #{ENV['STATSD_ADDR']} not reachable, proceeding without statsd")
   end
 end