X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/76e42f169c6e278c1d8cefe9fb7c03cc70892bac..27daf08f38eec505c224e7776678b32d50241e13:/services/api/app/models/node.rb

diff --git a/services/api/app/models/node.rb b/services/api/app/models/node.rb
index 1cd6387cff..abb46fdc66 100644
--- a/services/api/app/models/node.rb
+++ b/services/api/app/models/node.rb
@@ -94,7 +94,7 @@ class Node < ArvadosModel
       end
     end
 
-    # Assign hostname
+    # Assign slot_number
     if self.slot_number.nil?
       try_slot = 0
       begin
@@ -107,6 +107,10 @@ class Node < ArvadosModel
         end
         raise "No available node slots" if try_slot == Rails.configuration.max_compute_nodes
       end while true
+    end
+
+    # Assign hostname
+    if self.hostname.nil? and Rails.configuration.assign_node_hostname
       self.hostname = self.class.hostname_for_slot(self.slot_number)
     end
 
@@ -205,12 +209,16 @@ class Node < ArvadosModel
   end
 
   def self.hostname_for_slot(slot_number)
-    "compute#{slot_number}"
+    config = Rails.configuration.assign_node_hostname
+
+    return nil if !config
+
+    sprintf(config, {:slot_number => slot_number})
   end
 
   # At startup, make sure all DNS entries exist.  Otherwise, slurmctld
   # will refuse to start.
-  if Rails.configuration.dns_server_conf_dir and Rails.configuration.dns_server_conf_template
+  if Rails.configuration.dns_server_conf_dir and Rails.configuration.dns_server_conf_template and Rails.configuration.assign_node_hostname
     (0..Rails.configuration.max_compute_nodes-1).each do |slot_number|
       hostname = hostname_for_slot(slot_number)
       hostfile = File.join Rails.configuration.dns_server_conf_dir, "#{hostname}.conf"