I install varnish(5) just like here: https://devdocs.magento.com/guides/v2.2/config-guide/varnish/config-varnish.html

I make test from varnish cli

varnishd -d -f /etc/varnish/default.vcl

Debug: Child (26063) Started
200 0

Info: Child (26063) said Child starts

Everything looks ok.

But when I try run curl test:

curl -I -v --location-trusted 'https://mymagento.com'

I don't see any varnish headers.

How can I debug this problem? Or where can I look for some tips?

4 Answers 4


Check this section in /etc/varnish/default.vcl

sub vcl_deliver

You'll notice that some headers were unset e.g.

unset resp.http.X-Varnish
unset resp.http.X-Magento-Debug;

Comment them out if you want to see them in the response headers.

Also make sure that you set your Magento 2 environment to 'developer'

  1. Varnish header request only displays in developer mode. Click Here

First, make sure you are using Magento’s developer mode; otherwise, you won’t see the headers.

  1. Make sure the varnish cache set in the backend as a full-page cache in store -> configuration -> advanced -> full page cache
  • Yes, I know. I don't see headers in developer mode :). I see others Magento headers like X-Magento-Debug: 1 but not those from varnish.
    – Maciej
    May 4, 2018 at 17:58
  • if possible, please paste the results. May 4, 2018 at 18:02
  • @Maciej, do you got any solution for this?
    – anujeet
    Jun 17, 2020 at 11:03

My Response headers are give below:

Cache-Control: max-age=0, must-revalidate, no-cache, no-store
Connection: keep-alive
Content-Encoding: gzip
Content-Type: text/html; charset=UTF-8
Date: Tue, 08 May 2018 09:21:19 GMT
Expires: Mon, 08 May 2017 09:20:52 GMT
Pragma: no-cache
Server: nginx/1.10.3
Set-Cookie: form_key=HfXDuOKLNlnRkV3x; expires=Tue, 08-May-2018 10:20:52 GMT; Max-Age=3600; path=/; domain=
Set-Cookie: PHPSESSID=s72hj0entb9avq6f8vtkt53bcu; expires=Tue, 08-May-2018 10:20:52 GMT; Max-Age=3600; path=/; domain=; HttpOnly
Transfer-Encoding: chunked
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Magento-Debug: 1
X-XSS-Protection: 1; mode=block

X-Magento-Debug is from varnish.

If you read the vcl file, you will see X-Magento-Debug there. It will change to X-Magento-Cache-Debug once you're in production mode.

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