[incubator-openwhisk] branch master updated: Make nginx more performant acting as a proxy. (#2727)

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rabbah pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-openwhisk.git


The following commit(s) were added to refs/heads/master by this push:
     new 39669e6  Make nginx more performant acting as a proxy. (#2727)
39669e6 is described below

commit 39669e607298850ac73038f6c444ff02d720d7fc
Author: Markus Thömmes <ma...@me.com>
AuthorDate: Tue Sep 12 16:41:40 2017 +0200

    Make nginx more performant acting as a proxy. (#2727)
    
    This enables using HTTP keepalive towards the backend so the connections are reused more efficiently.
---
 ansible/roles/nginx/templates/nginx.conf.j2 | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ansible/roles/nginx/templates/nginx.conf.j2 b/ansible/roles/nginx/templates/nginx.conf.j2
index 53205b7..31c1ccf 100644
--- a/ansible/roles/nginx/templates/nginx.conf.j2
+++ b/ansible/roles/nginx/templates/nginx.conf.j2
@@ -4,7 +4,7 @@ worker_processes {{ nginx.wpn.router }};
 
 events {
 {# default: 1024 #}
-    worker_connections  4096;
+    worker_connections 4096;
 }
 
 http {
@@ -18,6 +18,9 @@ http {
         '$http_referer $http_user_agent $upstream_addr';
     access_log /logs/nginx_access.log combined-upstream;
 
+    proxy_http_version 1.1;
+    proxy_set_header Connection "";
+
     upstream controllers {
         # fail_timeout: period of time the server will be considered unavailable
         # Mark the controller as unavailable for at least 60 seconds, to not get any requests during restart.
@@ -30,6 +33,7 @@ http {
         server {{ hostvars[ip].ansible_host }}:{{ controller.basePort + groups['controllers'].index(ip) }} backup;
 {% endif %}
 {% endfor %}
+        keepalive 512;
     }
 
     server {

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