imagery: retry proxy errors

diff --git a/cookbooks/imagery/templates/default/nginx_imagery_layer_fragment.conf.erb b/cookbooks/imagery/templates/default/nginx_imagery_layer_fragment.conf.erb
index c4271690d43e0737d16060d3ca5732e18d9749ac..44078b2e240b13e87661b4eff8ed5ce59b429be7 100644 (file)
--- a/cookbooks/imagery/templates/default/nginx_imagery_layer_fragment.conf.erb
+++ b/cookbooks/imagery/templates/default/nginx_imagery_layer_fragment.conf.erb
@@ -22,6 +22,9 @@ location ~* "^/layer/<%= @layer %>/(\d+)/(\d+)/(\d+)\.(png|jpg|jpeg)$" {
   proxy_cache_valid 200 204 180d;
   proxy_cache_use_stale error timeout updating http_502 http_503 http_504;
   proxy_cache_background_update on;
+  proxy_next_upstream error timeout invalid_header http_500 http_503;
+  proxy_next_upstream_tries 3;
+  proxy_next_upstream_timeout 30s;
 
 <% else -%>
   # Override QUERY_STRING to force mapserver query parameters