diff --git a/lib/kamal/commands/healthcheck.rb b/lib/kamal/commands/healthcheck.rb
index 5adc02445..f7bc867d2 100644
--- a/lib/kamal/commands/healthcheck.rb
+++ b/lib/kamal/commands/healthcheck.rb
@@ -1,7 +1,7 @@
 class Kamal::Commands::Healthcheck < Kamal::Commands::Base
 
   def run
-    web = config.role(:web)
+    web = config.role(:web) || config.roles.select(&:running_traefik?).first
 
     docker :run,
       "--detach",
diff --git a/lib/kamal/configuration.rb b/lib/kamal/configuration.rb
index fc881c069..2ba442601 100644
--- a/lib/kamal/configuration.rb
+++ b/lib/kamal/configuration.rb
@@ -25,7 +25,7 @@ def load_config_files(*files)
 
       def load_config_file(file)
         if file.exist?
-          YAML.load(ERB.new(IO.read(file)).result).symbolize_keys
+          YAML.load(ERB.new(IO.read(file)).result, aliases: true).symbolize_keys
         else
           raise "Configuration file not found in #{file}"
         end
@@ -90,7 +90,7 @@ def all_hosts
   end
 
   def primary_web_host
-    role(:web).primary_host
+    (role(:web) || roles.select(&:running_traefik?).first).primary_host
   end
 
   def traefik_hosts
@@ -249,7 +249,7 @@ def ensure_required_keys_present
 
       roles.each do |role|
         if role.hosts.empty?
-          raise ArgumentError, "No servers specified for the #{role.name} role"
+          puts "Warning: No servers specified for the #{role.name} role"
         end
       end