[CentOS-announce] Announcing release for Varnish Cache 4 on CentOS Linux 7 x86_64 SCL

Tue Dec 22 11:52:57 UTC 2015
Honza Horak <hhorak at redhat.com>

I am pleased to announce the immediate availability of version 4 of the 
Varnish Cache Server on CentOS Linux 7 x86_64, delivered via a Software 
Collection (SCL) built by the SCLo Special Interest Group 

You can get started in three easy steps:
$ sudo yum install centos-release-scl
$ sudo yum install rh-varnish4
$ scl enable rh-varnish4 bash

At this point you should be able to use varnish just as a normal 
application. An example of commands run might be:
$ systemctl start rh-varnish4-varnish
$ varnishtop

In order to view the individual components included in this collection, 
including additional subpackages, you can run:
$ sudo yum list rh-varnish4\*

About Software Collections
Software Collections give you the power to build, install, and use 
multiple versions of software on the same system, without affecting 
system-wide installed packages. Each collection is delivered as a group 
of RPMs, with the grouping being done using the name of the collection 
as a prefix of all packages that are part of the software collection.

The collection rh-varnish4 delivers version 4 of the Varnish Cache, a 
high-performance HTTP reverse proxy. The daemon is called 

For more on the Varnish HTTP, see https://www.varnish-cache.org.

The SCLo SIG in CentOS
The Software Collections SIG group is an open community group 
co-ordinating the development of the SCL technology, and helping curate 
a reference set of collections. In addition to the Varnish Cache 
collection being released here, we also build and deliver other 
databases, web servers, and language stacks including multiple versions 
of PostgreSQL, MariaDB, Apache HTTP Server, NodeJS, Ruby, Python and others.

Software Collections SIG release was announced at 

You can learn more about Software Collections concepts at: 
You can find information on the SIG at 
https://wiki.centos.org/SpecialInterestGroup/SCLo ; this includes howto 
get involved and help with the effort.

We meet every second Wednesday at 16:00 UTC in #centos-devel (ref: 
https://www.centos.org/community/calendar), for an informal open forum 
open to anyone who might have comments, concerns or wants to get started 
with SCL's in CentOS.


SCLo SIG member