I have configured Varnish cache in the local Magento 2 environment and It is working fine.

I have added the below lines in the app/etc/env.php file.

'http_cache_hosts' => [
        'host' => '',
        'port' => '6082'

What is the real purpose of adding this configuration in Magento 2 env.php?

What do these configurations do?

How it affects Magento? Please Help me Out....


2 Answers 2


To make Magento aware of the Varnish servers, add the following section to app/etc/env.php. For Example:

'http_cache_hosts' =>
  array (
    0 =>
    array (
      'host' => 'varnish-0',
      'port' => '80',
    1 =>
    array (
      'host' => 'varnish-1',
      'port' => '80',

In order to ensure the Varnish cache can be cleared, you must also add a node to your env.php to tell Magento how to communicate with Varnish

I hope this will help

  • If i don't add these lines in env.php, then Varnish cache won't work as expected in Magento Right ?
    – Aji
    Nov 19, 2019 at 11:40
  • 1
    It is because If you want to flush the Varnish cache from the Magento backend, you need to add the Varnish server in your Magento config to http-cache-hosts. Nov 19, 2019 at 12:13

You can also put Varnish hots using bin/magento:

magento setup:config:set --http-cache-hosts=,

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