===How to enable/use Varnish with a WordPress Website===

**Step 1 :** Log into N99panel. From under N99panel dashboard, click 'VHosts/Websites'

{{:php:dashboard-click-vhosts.png?direct&400|}}
\\

**Step 2 :** You will see the list of all the VHosts. Please click 'Details/Manage' link against the appropriate VHost/Website

{{:wordpress:vhosts-lists-details.png?direct&400|}}
\\

**Step 3 :** Scroll down to varnish and click the pencil icon against it. Current status of Varnish would also be shown over there

{{:gen:varnish-pencil.png?direct&400|}}
\\

**Step 4 :** Now select the appropriate option for Varnish.If Varnish is already disabled, choose 'Enable - config 3'.

{{:gen:varnish-form.png?direct&400|}}

There are five options for Varnish :

- Disable\\
- Enable – Config 3\\
- Enable – Config 2\\
- Enable – Config 1\\
- Purge/Clear-cache\\

The internal IP of the Varnish server is 172.16.26.1

Please put this IP w.r.t. any software/plugin which is managing varnish cache

With WordPress you can easily use Varnish and enable auto-purging of content (when it changes), by using the [[https://wordpress.org/plugins/varnish-http-purge/|Proxy Cache Purge]] .After installing the plugin. kindly make sure that you that this plugin points to varnish server at 172.16.26.1 

In some scenarios auto-purging of Varnish cache may not happen even after using the Proxy Cache Purge plugin. Then in that case Purge/Clear-cache can be used to clear the cache. To disable Varnish, simply choose the Disable option. 

When Varnish and specifically, when a higher number configuration is applied, it may impact certain sections of the website in unexpected ways, as certain cookies/sessions will have no effect based on varnish configuration selection. After applying a Varnish configuration, you should thoroughly check all parts of the website, and also ensure security and privacy is not compromised.

**Important :** When you are doing design/coding changes of your website, please disable Varnish in that case. Varnish cache or any cache for that matter should only be enabled in production ready mode.

**Important :** N99panel (Pack Web Hosting Pvt. Ltd.) is not responsible for erroneous or unintended consequences of Varnish implementaion