Patched options.py to add an extra variable to the dict available to the

configuration sections that provides the host node's name, so you can
easily name processes uniquely on different hosts if you choose to.

src/supervisor/options.py

@@ -29,6 +29,7 @@ import stat
 import pkg_resources
 import select
 import glob
+import platform
 
 from fcntl import fcntl
 from fcntl import F_SETFL, F_GETFL
@@ -789,11 +790,12 @@ class ServerOptions(Options):
                 raise ValueError(
                     '%(process_num) must be present within process_name when '
                     'numprocs > 1')
-
+        host_node_name = platform.node()
         for process_num in range(numprocs_start, numprocs + numprocs_start):
             expansions = {'here':self.here,
                           'process_num':process_num,
                           'program_name':program_name,
+                          'host_node_name':host_node_name,
                           'group_name':group_name}
 
             environment = dict_of_key_value_pairs(