How to make varnish 3.0 as a service on Ubuntu 16.04

In Ubuntu 16.04 all services are written inside /etc/systemd/system/ directory. If we want create a service for varnish, we can create the following file under the above (/etc/systemd/system/) directory.

Service file name: varnish.service

Copy the following content to the varnish.service file:

[Service]
Type=forking

ExecStart=/usr/local/varnish/startup.sh
ExecStop=/usr/local/varnish/shutdown.sh

RestartSec=10
Restart=always

Now we need to create the startup.sh and shutdown.sh file under /usr/local/varnish directory. Inside the .sh file we need to run the varnish server with a port with a .vcl file. We need to run it so that it uses memory (ram) for higher performance. For running varnish from .sh file we have lots of options but the simplest is as follows:

#!/bin/sh
sudo varnishd -a :7070  -f  -T 0.0.0.0:2000

Similarly we also need to create the shutdown.sh file under /usr/local/varnish directory. Following is the content of the shutdown.sh file:

#!/bin/sh
sudo pkill varnishd