Configure Varnish (TM) for WordPress

NOTE: The steps below assume that WordPress is already running at the root URL of the server, such as at, and that Varnish ™ is enabled. Varnish ™ is disabled by default, but you can enable it by following the instructions in our Varnish ™ guide.

Download the different files used in the example:


Follow these steps:

  • Log in to the server console using SSH.
  • Backup the Varnish ™ configuration file:

    $ sudo cp /opt/bitnami/varnish/etc/varnish/default.vcl /opt/bitnami/varnish/etc/varnish/default.vcl.backup
  • Add the WordPress-specific Varnish ™ configuration by executing the following commands:

    $ sudo cp wordpress.vcl /opt/bitnami/varnish/etc/varnish/default.vcl
    $ sudo sed -i 's/port\s*=\s*"[^"]*"/port = "80"/g' /opt/bitnami/varnish/etc/varnish/default.vcl
  • Rename the Varnish ™ control script from to

    $ sudo mv /opt/bitnami/varnish/scripts/ /opt/bitnami/varnish/scripts/
  • Restart Varnish ™:

    $ sudo /opt/bitnami/ restart varnish
  • Open port 81 in the server firewall.

  • Check if your website is being served properly by Varnish ™ on port 81 by adding :81 to the domain name in your browser.

  • If Varnish ™ is working correctly, switch the Apache and Varnish ™ ports and activate Varnish ™ on port 80:

    $ sudo sed -i 's/^\s*Listen .*$/Listen 81/g' /opt/bitnami/apache2/conf/httpd.conf
    $ sudo sed -i 's/\:80/\:81/g' /opt/bitnami/apache2/conf/bitnami/bitnami.conf
    $ sudo sed -i 's/at port.*"/at port 81"/g' /opt/bitnami/apache2/scripts/
    $ sudo sed -i 's/\:80/\:81/g' /opt/bitnami/apps/*/conf/httpd-vhosts.conf
    $ sudo sed -i 's/=80/=81/g' /opt/bitnami/properties.ini
    $ sudo sed -i 's/port\s*=\s*"[^"]*"/port = "81"/g' /opt/bitnami/varnish/etc/varnish/default.vcl
    $ sudo sed -i 's/VARNISH_PORT=.*$/VARNISH_PORT=80/g' /opt/bitnami/varnish/scripts/
    $ sudo /opt/bitnami/ restart
  • Remove the firewall rule for port 81.

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Last modification July 8, 2020