You can install the package with the command below, depending on your os:
$ yum install (see available packages in table below)
$ dnf install (see available packages in table below)

Varnish

Varnish is an HTTP accelerator designed for content-heavy dynamic web sites as well as heavily consumed APIs. In contrast to other web accelerators, such as Squid, which began life as a client-side cache, or Apache and nginx, which are primarily origin servers, Varnish was designed as an HTTP accelerator. Varnish is focused exclusively on HTTP, unlike other proxy servers that often support FTP, SMTP and other network protocols.

Available Packages:

Package Version
ulyaoth-varnish5.1 5.1.2
ulyaoth-varnish5 5.0.0
ulyaoth-varnish4.1 4.1.7
ulyaoth-varnish4 4.0.4
ulyaoth-varnish3 3.0.7

Supported Operating Systems:

Operating Systems Versions
Amazon Linux latest
CentOS 6 (EPEL), 7
Fedora 19, 20, 21, 22, 23, 24, 25
Oracle Linux 6 (EPEL), 7
Red Hat 6 (EPEL), 7
Scientific Linux 6 (EPEL), 7

ulyaoth support