Try dynamic fedmsg endpoints out on nuancier.

inventory/group_vars/nuancier

@@ -4,15 +4,18 @@ lvm_size: 20000
 mem_size: 2048
 num_cpus: 2
 
-# for systems that do not match the above - specify the same parameter in
+# Definining these vars has a number of effects
-# the host_vars/$hostname file
+# 1) mod_wsgi is configured to use the vars for its own setup
+# 2) iptables opens enough ports for all threads for fedmsg
+# 3) roles/fedmsg/base/ declares enough fedmsg endpoints for all threads
+wsgi_fedmsg_service: nuancier
+wsgi_procs: 2
+wsgi_threads: 2
 
-tcp_ports: [ 80, 443,
+tcp_ports: [ 80,
     # This port is required by gluster
     6996,
-    # These 16 ports are used by fedmsg.  One for each wsgi thread.
+    ]
-    3000, 3001, 3002, 3003, 3004, 3005, 3006, 3007,
-    3008, 3009, 3010, 3011, 3012, 3013, 3014, 3015]
 
 fas_client_groups: sysadmin-noc,sysadmin-web
 

inventory/group_vars/nuancier-stg

@@ -4,15 +4,18 @@ lvm_size: 20000
 mem_size: 1024
 num_cpus: 2
 
-# for systems that do not match the above - specify the same parameter in
+# Definining these vars has a number of effects
-# the host_vars/$hostname file
+# 1) mod_wsgi is configured to use the vars for its own setup
+# 2) iptables opens enough ports for all threads for fedmsg
+# 3) roles/fedmsg/base/ declares enough fedmsg endpoints for all threads
+wsgi_fedmsg_service: nuancier
+wsgi_procs: 2
+wsgi_threads: 2
 
-tcp_ports: [ 80, 443,
+tcp_ports: [ 80,
     # This port is required by gluster
     6996,
-    # These 16 ports are used by fedmsg.  One for each wsgi thread.
+    ]
-    3000, 3001, 3002, 3003, 3004, 3005, 3006, 3007,
-    3008, 3009, 3010, 3011, 3012, 3013, 3014, 3015]
 
 fas_client_groups: sysadmin-noc,sysadmin-web
 

roles/fedmsg/base/tasks/main.yml

@@ -34,6 +34,15 @@
   - config
   - fedmsg/base
 
+- name: remove any old static endpoints files
+  file: dest="/etc/fedmsg.d/{{item}}" state=absent
+  with_items:
+  - endpoints-nuancier.py
+  tags:
+  - config
+  - fedmsgdconfig
+  - fedmsg/base
+
 # Any files that change need to restart any services that depend on them.  A
 # trick here is that some hosts have an httpd that uses fedmsg, while others do
 # not.  Some hosts have a fedmsg-hub that uses this config, while others do not.

roles/fedmsg/base/templates/endpoints-nuancier.py.j2

@@ -1,18 +0,0 @@
-{% if env == 'staging' %}
-suffix  = 'stg.phx2.fedoraproject.org'
-{% else %}
-suffix = 'phx2.fedoraproject.org'
-{% endif %}
-
-config = dict(
-    endpoints={
-        "nuancier.nuancier01": [
-            "tcp://nuancier01.%s:30%02i" % (suffix, i)
-            for i in range(16)
-        ],
-        "nuancier.nuancier02": [
-            "tcp://nuancier02.%s:30%02i" % (suffix, i)
-            for i in range(16)
-        ],
-    },
-)

roles/nuancier/templates/nuancier.conf

@@ -1,6 +1,6 @@
 Alias /nuancier/static /usr/lib/python2.7/site-packages/nuancier/static
 
-WSGIDaemonProcess nuancier maximum-requests=1000 display-name=nuancier processes=4 threads=4
+WSGIDaemonProcess nuancier maximum-requests=1000 display-name=nuancier processes={{wsgi_procs}} threads={{wsgi_threads}}
 WSGISocketPrefix run/wsgi
 WSGIRestrictStdout On
 WSGIRestrictSignal Off