How to Install Varnish Cache On Centos 6.8 64 bit

MooseLucifer

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Varnish is a cache system is used to speed up the server, especially with large systems and more traffic. Varnish works by caching page content into RAM and immediately returned to the user upon request but not through handling from PHP or MySQL.

Steps to Install Varnish Cache On Centos 6.8 64 bit

Start the install process:

1.Setup varnish repo :
Code:
[root@server ~]# wget http://repo.varnish-cache.org/redhat/varnish-3.0/el6/noarch/varnish-release/varnish-release-3.0-1.el6.noarch.rpm

[root@server ~]# rpm --nosignature -i varnish-release-3.0-1.el6.noarch.rpm
2. Install Varnish and Apache :
Code:
[root@server ~]# yum install varnish -y
[root@server ~]# yum install httpd -y
3. Make both program start at boot :
Code:
[root@server ~]# chkconfig --level 345 varnish on
[root@server ~]# chkconfig --level 345 httpd on
4. Configure apache to listen to port 8080 :
Code:
[root@server ~]# nano /etc/httpd/conf/httpd.conf
- Modify below : Listen 80 to Listen 8080
5. Configuring Varnish Cache :
Code:
[root@server ~]# nano /etc/sysconfig/varnish
- Change VARNISH_LISTEN_PORT=6081 to VARNISH_LISTEN_PORT=80
- Add the following in /etc/varnish/default.vcl :
Code:
[root@server ~]# nano /etc/varnish/default.vcl
Change .port = "80"; to .port = "8080";
6. Start Varnish and Apache :
Code:
[root@server ~]# service varnish start
[root@server ~]#service httpd start
7. verify varnish and Apache running on the correct port :
Code:
[root@server ~]# netstat -plunt
8. Verify the Varnish by running the following command.
Code:
[root@server ~]# curl -I http://127.0.0.1 or domain
9. ApacheBench performance test without Varnish Cache:
Code:
[root@server ~]# ab -k -n 1000 -c 50 http://127.0.0.1:8080/ or domain
Testing Varnish

To know Varnish is working or not you use the command below:

Code:
curl -I domain.com or curl -I http://127.0.0.1
First run, to standard X-Varnish line you will see a number, for example:

for example

Code:
[root@server ~]# curl -I http://127.0.0.1
HTTP/1.1 403 Forbidden
Server: Apache/2.2.15 (CentOS)
Accept-Ranges: bytes
Content-Type: text/html; charset=UTF-8
Content-Length: 4961
Accept-Ranges: bytes
Date: Wed, 07 Sep 2016 12:52:00 GMT
X-Varnish: 1904053775
Age: 0
Via: 1.1 varnish
Connection: keep-alive
Use the command on the 2nd, if it appears 2 Varnish has some activity that is already there, for example:

Code:
X-Varnish: 1904053775
or X-Cache: HIT
Additionally, you can also use two tools:

varnishlog: view Varnish logs in real time
varnishstat: display Varnish cache status

Good luck!
 

jwn

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Do you also tried with mysql?
 
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