Stab at making our lower mem proxies happier so they don't nagios flood us

inventory/group_vars/proxies

@@ -1,9 +1,14 @@
 ---
 # Define resources for this group of hosts here.
 lvm_size: 30000
-mem_size: 4192
+mem_size: 8192
 num_cpus: 4
 
+# This is used in the httpd.conf to determine the value for serverlimit and 
+# maxrequestworkers. On 8gb proxies, 900 seems fine. But on 4gb proxies, this 
+# should be lowered in the host vars for that proxy.
+maxrequestworkers: 900
+
 tcp_ports: [
     # For apache, generally.
     80,

inventory/group_vars/proxies-stg

@@ -4,6 +4,11 @@ lvm_size: 30000
 mem_size: 8192
 num_cpus: 2
 
+# This is used in the httpd.conf to determine the value for serverlimit and 
+# maxrequestworkers. On 8gb proxies, 900 seems fine. But on 4gb proxies, this 
+# should be lowered in the host vars for that proxy.
+maxrequestworkers: 900
+
 tcp_ports: [
     # For apache, generally.
     80,

inventory/host_vars/proxy03.fedoraproject.org

@@ -18,3 +18,8 @@ postfix_group: vpn
 
 nrpe_procs_warn: 900
 nrpe_procs_crit: 1000
+
+# This is used in the httpd.conf to determine the value for serverlimit and 
+# maxrequestworkers. On 8gb proxies, 900 seems fine. But on 4gb proxies, this 
+# should be lowered in the host vars for that proxy.
+maxrequestworkers: 400

roles/httpd/proxy/tasks/main.yml

@@ -1,6 +1,6 @@
 - name: Copy in the main httpd.conf file for proxy nodes
-  copy: >
-    src=httpd.conf dest=/etc/httpd/conf/httpd.conf
+  template: >
+    src=httpd.conf.j2 dest=/etc/httpd/conf/httpd.conf
     owner=root group=root mode=0644
   notify:
   - restart httpd

roles/httpd/proxy/templates/httpd.conf.j2

@@ -108,8 +108,8 @@ KeepAliveTimeout 15
 StartServers           150
 MinSpareServers         50
 MaxSpareServers	       100
-ServerLimit           950
-MaxClients            900
+ServerLimit           {{ maxrequestworkers }}
+MaxRequestWorkers     {{ maxrequestworkers }}
 MaxRequestsPerChild    10000
 
 #