#This is the VCL configuration file for varnish. See the vcl(7)
#man page for details on VCL syntax and semantics.
# One backend for each instance in the "web" role. If that instance is also in
# the "proxy" role then it's listening on port 81, otherwise it's on port 80
<% roles[:web].each_with_index do |address, i| %>
backend web_<%= i %> {
.host = "<%= address %>";
.port = "<%= roles[:proxy] && roles[:proxy].include?(address) ? 81 : 80 %>";
}
<% end %>
<% unless config[:proxy] && config[:proxy][:caching_enabled] %>
# redefine the vcl_recv function to disable caching if
# config[:proxy][:caching_enabled] is not true for this instance.
sub vcl_recv {
if (req.request != "GET" &&
req.request != "HEAD" &&
req.request != "PUT" &&
req.request != "POST" &&
req.request != "TRACE" &&
req.request != "OPTIONS" &&
req.request != "DELETE") {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
return (pass);
}
<% end %>
#
#Below is a commented-out copy of the default VCL logic. If you
#redefine any of these subroutines, the built-in logic will be
#appended to your code.
#
#sub vcl_recv {
# if (req.request != "GET" &&
# req.request != "HEAD" &&
# req.request != "PUT" &&
# req.request != "POST" &&
# req.request != "TRACE" &&
# req.request != "OPTIONS" &&
# req.request != "DELETE") {
# /* Non-RFC2616 or CONNECT which is weird. */
# return (pipe);
# }
# if (req.request != "GET" && req.request != "HEAD") {
# /* We only deal with GET and HEAD by default */
# return (pass);
# }
# if (req.http.Authorization || req.http.Cookie) {
# /* Not cacheable by default */
# return (pass);
# }
# return (lookup);
#}
#
#sub vcl_pipe {
# return (pipe);
#}
#
#sub vcl_pass {
# return (pass);
#}
#
#sub vcl_hash {
# set req.hash += req.url;
# if (req.http.host) {
# set req.hash += req.http.host;
# } else {
# set req.hash += server.ip;
# }
# return (hash);
#}
#
#sub vcl_hit {
# if (!obj.cacheable) {
# return (pass);
# }
# return (deliver);
#}
#
#sub vcl_miss {
# return (fetch);
#}
#
#sub vcl_fetch {
# if (!obj.cacheable) {
# return (pass);
# }
# if (obj.http.Set-Cookie) {
# return (pass);
# }
# set obj.prefetch = -30s;
# return (deliver);
#}
#
#sub vcl_deliver {
# return (deliver);
#}
#
#sub vcl_discard {
# /* XXX: Do not redefine vcl_discard{}, it is not yet supported */
# return (discard);
#}
#
#sub vcl_prefetch {
# /* XXX: Do not redefine vcl_prefetch{}, it is not yet supported */
# return (fetch);
#}
#
#sub vcl_timeout {
# /* XXX: Do not redefine vcl_timeout{}, it is not yet supported */
# return (discard);
#}
#
#sub vcl_error {
# set obj.http.Content-Type = "text/html; charset=utf-8";
# synthetic {"
#
#
#
#
# "} obj.status " " obj.response {"
#
#
# Error "} obj.status " " obj.response {"
# "} obj.response {"
# Guru Meditation:
# XID: "} req.xid {"
#
# Varnish
#
#
#
#"};
# return (deliver);
#}