From: Matt Amos <zerebubuth@gmail.com>
Date: Thu, 17 Oct 2019 11:47:09 +0000 (+0100)
Subject: Increase nginx keepalive settings.
X-Git-Url: https://git.openstreetmap.org/chef.git/commitdiff_plain/883c754c10bcc8b94844658c61512dfbb8a2e8a3

Increase nginx keepalive settings.

Increase both the number of requests per keepalive connection and
the number of keepalive connections to retain. This should reduce
the number of sockets used for a single connection and therefore
make it less likely that nginx will experience ephemeral socket
exhaustion at high request rates.

Closes #255
---

diff --git a/cookbooks/tilecache/templates/default/nginx_tile.conf.erb b/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
index 611bd4a73..c3b220f2d 100644
--- a/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
+++ b/cookbooks/tilecache/templates/default/nginx_tile.conf.erb
@@ -15,7 +15,8 @@ upstream tile_cache_backend {
 <% end -%>
 <% end -%>
 
-  keepalive 256;
+  keepalive 1024;
+  keepalive_requests 1024;
 }
 
 # Geo Map of tile caches