Purging Varnish Cache

If Varnish is enabled for a website, cache can be purged from the terminal or directly through OpenPanel.

Purge from Terminal​

You can purge cache entries manually using the curl command.

Purge a Specific URL​

This removes a single cached object (for a specific page, image, or file):

curl -X PURGE -H "Host: example.com" http://example.com/wp-content/uploads/test.jpg

Purge a Specific Website​

This removes all cached objects for one website (domain):

curl -X PURGE -H "Host: example.com" -H "X-Purge-Method: regex" http://example.com/.*

Purge All Websites​

To remove all cached objects across all domains handled by Varnish:

curl -X BAN http://localhost/.* 

Purge from Crons​

To purge cache from a cronjob, simply use the above curl commands and make sure to use varnish/webserver or php for container when creating Crons on OpenPanel.

Purge from WordPress​

To purge a cache for a WordPress website, use the CLP Varnish Cache plugin

To configure the plugin:

1. Login to wp-admin and go to Settings → CLP Varnish Cache.
2. Set varnish as 'Varnish Server'then Enable again.

To purge cache using the plugin:

1. Login to wp-admin and go to Settings → CLP Varnish Cache.
2. Click on Purge Entire Cache button.

Purge from Terminal​

You can purge cache entries manually using the curl command.

Notes​

• The Host header is required because Varnish stores cache separately for each domain name.
• The X-Purge-Method: regex header allows purging multiple URLs using pattern matching.
• Purge requests must come from localhost (the website itself or php/webserver containers).