Looking at a VCL I use to set hostname and this seems to work-
sub vcl_deliver {
set resp.http.X-Cache-Node = server.hostname;
}
Maybe you can use in form of server.environmental_variable
From: varnish-misc
<[email protected]> on behalf of
Hugues Alary <[email protected]>
Date: Monday, September 9, 2019 at 6:09 PM
To: varnish-misc <[email protected]>
Subject: Environment variables in VCL
Hi there,
I'm using Varnish in a Kubernetes cluster and my configuration needs to use
environment variables.
More specifically, I'm trying to declare a `backend` with a `.host` whose value
is an environment variable.
backend b0 {
.host = "$ENVIRONMENT_VARIABLE_HOSTNAME";
.port = "80";
.connect_timeout = 300s;
.first_byte_timeout = 300s;
.between_bytes_timeout = 300s;
}
This doesn't work. It tried using the std.get_env() function but it doesn't
work in this context.
Is there any way to use environment variables in VCL, or do I have to create a
configuration template?
Thanks for your help,
Cheers,
-Hugues
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