Magento

Varnish Cache and Magento 2 Part 2

VARNISH CACHE AND MAGENTO 2

Hello Everyone, welcome to the second part of Varnish integration in Magento 2, in my previous blog I gave a brief overview of varnish cache, its management process, and storage methods. In this blog, I will show you the steps to install varnish software and configure it with the Magento installation. 

Varnish installation

The following steps will show you how to install a varnish cache on your Linux system. For this demonstration, I am using a ubuntu OS. 

Let’s execute the following step from our terminal to install varnish software.

curl -L https://packagecloud.io/varnishcache/varnish41/gpgkey | sudo apt-key add -

If you are getting an error related with your curl library then execute the following command to install CURL on your system 

sudo apt install php7.0-cur //choose your PHP CURL version properly

Or try following steps

sudo apt update
sudo apt install curl

Then open /etc/apt/sources.list.d/varnishcache_varnish41.list file in any text editor or execute the following command from your terminal

sudo nano /etc/apt/sources.list.d/varnishcache_varnish41.list
deb https://packagecloud.io/varnishcache/varnish41/ubuntu/ trusty main
deb-src https://packagecloud.io/varnishcache/varnish41/ubuntu/ trusty main

Then execute the following command to update the packages 

sudo apt-get update
sudo apt-get install varnish

Configure Varnish

Once you install the varnish software, you are able to see some basic configuration in /etc/default/varnish file. For systemd, the VCL file is directed in a different manner. It will be located in /etc/systemd/system/varnish.service

If you open the varnish.service file you will find the -f points to a default VCL file, if you want to know more about the VCL, check out my previous blog for more information.

-f /etc/varnish/default.vcl

Open /etc/default/varnish file and locate VARNISH_LISTEN_PORT and set it to 80 or the port number you want to set. Our next step is to configure default.vcl file to set our backend details.

update the following code in your default.vcl file

backend default {
     .host = "127.0.0.1";
     .port = "8080";
}

Now, make sure your apache server listens to 8080 port(or any other port, but, it should match the .port value from default.VCL file)

Listen 8080

It’s typically inside apache2.conf or in ports.conf. Restart your varnish and apache server using the following command 

Sudo service varnish restart
Sudo service apache2 restart

To verify our varnish is configured properly and it’s working well with Magento, execute the following command from your terminal. 

curl -I http://<your-magento-application>

And you will see the following output in your HTML header.

X-Varnish: 65538
Age: 0
Via: 1.1 varnish (Varnish/5.2)
Accept-Ranges: bytes
Transfer-Encoding: chunked
Connection: keep-alive
Varnish Cache and Magento 2
Varnish Cache and Magento 2 Part 2 4

That’s all for now. Please let me know your thoughts about this blog down in the comment section. Good bye for now and happy coding 🙂

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