I am trying from console to purge and refresh one specific link of my magento 2 store in Varnish. I don't want to clear the whole cache but just one link.
I tried:
curl -X PURGE http://www.example.com/my/link
or
curl -X PURGE https://www.example.com/my/link
but don't work.
Result of curl is:
<!DOCTYPE html>
<html>
<head>
<title>400 X-Magento-Tags-Pattern or X-Pool header required</title>
</head>
<body>
<h1>Error 400 X-Magento-Tags-Pattern or X-Pool header required</h1>
<p>X-Magento-Tags-Pattern or X-Pool header required</p>
<h3>Guru Meditation:</h3>
<p>XID: 3000241</p>
<hr>
<p>Varnish cache server</p>
</body>
</html>
Then I tried with varnishadm
varnishadm -T 127.0.0.1:6082 -S /etc/varnish/secret ban "req.http.host == example.com && req.url == /my/link"
This seems working but I am not sure. I used "ban" there and I don't know if with this I excluded this link from Varnish?
I use Magento 2 default.vcl, Varnish 6 and Nginx. I saw that Magento's vcl has this section for purging:
acl purge {
"localhost";
}
sub vcl_recv {
if (req.method == "PURGE") {
# check if the client is allowed to purge content
if (client.ip !~ purge) {
return (synth(405, "Method not allowed"));
}
# To use the X-Pool header for purging varnish during automated deployments, make sure the X-Pool header
# has been added to the response in your backend server config. This is used, for example, by the
# capistrano-magento2 gem for purging old content from varnish during it's deploy routine.
if (!req.http.X-Magento-Tags-Pattern && !req.http.X-Pool) {
return (synth(400, "X-Magento-Tags-Pattern or X-Pool header required"));
}
if (req.http.X-Magento-Tags-Pattern) {
ban("obj.http.X-Magento-Tags ~ " + req.http.X-Magento-Tags-Pattern);
}
if (req.http.X-Pool) {
ban("obj.http.X-Pool ~ " + req.http.X-Pool);
}
return (synth(200, "Purged"));
}
As I understand this section with the appropriate insert in
env.php
it permits to clean Varnish from magento admin which for me it works.
But why with
curl -X purge
can't clear one link?
What I do wrong? Can somebody explain please all these?
