cPanel – Install Nginx + Varnish alongside Apache !

Nginx is a very fast webserver when compared with the default Apache offered by cPanel. Nginx is known for its high performance and low resource consumption. Servers hosting WordPress sites are employing Nginx as it improves the performance.

Nginx will work as a front end reverse proxy of your cPanel server along with apache, which will increase the performance. We have a plugin called ‘Nginx Admin’ which is a cPanel Nginx integration plugin.

Use the following steps to install it on a cPanel server :

1 ) Download the source files :

# cd /usr/local/src
# wget http://nginxcp.com/latest/nginxadmin.tar
# tar xf nginxadmin.tar
# cd publicnginx

2) Generate a Remote Access Key.

Generate a key by logging into WHM, going to Clusters, then Remote Key Access, and then clicking Generate New Key.

3) Run the script

# ./nginxinstaller install

This Nginx installation method integrates with WHM/cPanel and uses the Apache configuration files that WHM/cPanel uses by default.

After installation you can go to WHM, Plugins, and Nginx Admin to handle Nginx. From there you can restart Nginx, edit the configuration files, view logs, and more.

You can also restart Nginx on the command line with the Apache command:

# /etc/init.d/httpd restart

Now lets move ahead with the installation of Varnish.

Varnish is a caching technology known as web accelerator which is used as reverse HTTP proxy, which will enhance the performance of your website.

Varnish stores a copy of the page which is served by the web server the first time a user visits the website. Next time, when the user requests for the same page, varnish will serve the copy instead of serving it from the web server. Thus, your webserver is seldom bought into the lime-light if the used pages are being fetched, which improves the performance.

Before moving ahead, we will bind our webserver to the port 8081, in the file – /usr/local/apache/conf/httpd.conf,

Change the Portion – Listen 0.0.0.0:80 to Listen 0.0.0.0:8081 and restart the webservice.

Now, lets download and install the Varnish !

1) Add the repo : ( check the version of your OS ) : the URL given below is for CentOS / Redhat 5.x versions :

# wget http://repo.varnish-cache.org/redhat/varnish-3.0/el5/noarch/varnish-release/varnish-release-3.0-1.noarch.rpm

# rpm -Uvh varnish-release-3.0-1.noarch.rpm

2) Install the service :

# yum install varnish

3) Edit the configuration file for varnish – /etc/sysconfig/varnish and change the value of VARNISH_LISTEN_PORT to 80

# grep VARNISH_LISTEN_PORT /etc/sysconfig/varnish
VARNISH_LISTEN_PORT=80
4)  Edit Varnish config: /etc/varnish/default.vcl . Correct the backend default Port to reflect – 8081 ( the port to which webserver was bind to )

backend default {
.host = “YOUR IP ADDRESS”;
.port = “8081”;
}

5) Start Varnish service on your server

# chkconfig varnish on

# service varnish start

You are done with installing Nginx and varnish in your cPanel server, which should improve your speed and performance.

 

cPanel – Installing Memcached !

Caching mechanisms are always useful to improve the speed and performance of the services being provided. Especially when you have dynamic webpages that are required to be loaded up, caching mechanisms, if enabled can be used to load the pages up quickly without bottle-necking the server.

Memcache(d) – | ‘d’ for daemon |  is an open source caching method used to speed-up webpages and its parsing.

Steps to install it on a cPanel based server is given below :

# yum install memcached ( ensure the EPEL repo’s are enabled ) : help needed on this ? Check this third-party link

# service memcached start – start the service.

# pecl install memcache – Install PHP memcache.

Now, make sure the memcache module is referenced in the php.ini file. If not, add the memcache extension in php.ini file.

# echo "extension=memcache.so" >> /usr/local/lib/php.ini

# service httpd restart

# chkconfig --levels 235 memcached on : To ensure memcached will be up even after a server reboot:

# php -m | grep memcache – check if you are good to go !

You can find the configuration file at –  vi /etc/sysconfig/memcached

Dont forget to open the port in your Firewall !

 

cPanel – Install Google mod_pagespeed module for Apache

“mod_pagespeed is an open-source Apache module created by Google to help Make the Web Faster by rewriting web pages to reduce latency and bandwidth” – http://modpagespeed.com/

To incorporate this module to your Apache webserver in a cPanel running server, do the following steps :

Note : This is meant for Apache 2.2.x versions.

1) Clone the installation scripts to the server :

# /usr/local/cpanel/3rdparty/bin/git clone https://github.com/pagespeed/cpanel.git /tmp/pagespeed/

2) Create a tar.gz custom_opt_mod for EasyApache script to be detected :

# cd /tmp/pagespeed/Easy
# tar -zcvf Speed.pm.tar.gz pagespeed

3) Move the custom mod to the place which is scanned by EasyApache ( create that folder, if not already present ) :

# mv Speed.pm Speed.pm.tar.gz -t /var/cpanel/easy/apache/custom_opt_mods/Cpanel/Easy/

4)  Remove the cloned script from /tmp

cd && rm -rf /tmp/pagespeed

Now, login to your cPanel WHM > EasyApache and look for “mod_pagespeed” option under the short lists along with other Apache modules. Select it,  make sure to enable deflate and version module.  Re-compile Apache webserver using this and you are good to go with PageSpeed.

– The default conf file will be under – /usr/local/apache/conf/

– Refer these sites to customize your configurations :

https://developers.google.com/speed/pagespeed

modpagespeed.com

 

Root your Samsung Galaxy Tab4 SM-T-231

I recently bought this Galaxy Tab4 and opted to use without a sim. However, the notification “Insert your SIM”, was driving me crazy and I decided to remove this system notification, but needed to root my device before that. If you wish to root your Galaxy Tab4, use the following given steps :

1) Make sure all the samsung drivers are installed in your PC

2) Boot the device into download mode by holding Power+Vol down+home and connect to computer using the USB cable.

3) Install Odin 1.85 ( Download options can be found here )

4) Download the openrecovery-twrp from this URL here

5) Open Odin, select PDA and then select the just downloaded file – openrecovery-twrp-2.8.0.1-degas.tar

odin-tab4

Make sure to untick every option as given in the above screenshot.

6) Once the PDA along with the file is selected, hit the button ‘Start’

7) Once this is complete, power-off the device, and then press Power+vol up+home to boot into twrp recovery menu.

8) select the option –  reboot > system and then move across the slide option to install root.

9) As your device is rebooted open superuser installer app and follow instructions to update the App from PlayStore and then install SU binary updates and finally then reboot.

The above steps will ensure the Device is rooted.

Now, to remove that agonizing notification “No Sim inserted”, do the following steps :

  • Download the free “Notifications Off”  App from Play store
  • Once it is installed, open the App and search for “system ui” and then un-check it and save your settings.

Vanished ! 😀