Find Linux OS is 32 or 64bit

There are several situations where you need to confirm whether your Linux OS installed  is 32bit or 64bit. People normally use uname -a to find it. But the following command will tell you exactly the machine   architecture.

    getconf LONG_BIT

getconf utility shall conform to the Base Definitions volume of IEEE Std 1003.1-2001, Section 12.2, Utility  Syntax.

eg:

[root@localhost ~]# getconf LONG_BIT
32
[root@localhost ~]#

My machine is 32bit.

How to disable gzip output on lightspeed server accounts

You can use .htaccess to disable gzip output if your website is running under a lightspeed server.

Open .htacess file and append following lines.

    php_flag zlib.output_compression Off
    RewriteEngine On
    RewriteRule . – [E=no-gzip:1]
    RewriteRule ^(.*)$ $1 [E=no-gzip:1]

ResellerClub and WHMCS: You are not authorized to perform this action

You got this error message because you have not registered all your IPs for API Access. You need to check if you have whitelisted your "whmcs domain ip" as well as the hosting server ip (if different)

See KB Article " http://www.posiblehost.com/billing/knowledgebase.php?action=displayarticle&id=172 " to resolve the issue.

Enable SMTP Authentication on cpanel

POP before SMTP authentication allows you to send messages via a POP mail server for 30 minutes before you will need to re-authenticate a session through SMTP.

POP before SMTP authentication is disabled in WHM by default. To enable this option, navigate to WHM’s Service Manager (Home >> Service Configuration >> Service Manager) and select the Antirelayd checkbox.

While POP before SMTP authentication is secure but if the customer will be able to check the email from an office, the current public IP belongs to that office IP has been added to email white list and any one from that network can be send email using this smtp server without any authentication for 30 minutes.

To disable the feature “Authenticate POP before SMTP” in WHM/Cpanel server by simply executing the following command.

To Enabling SMTP authentication

 /usr/local/cpanel/bin/tailwatchd --disable=Cpanel::TailWatch::Antirelayd

How to install Lighttpd for FLV streaming

Lighttpd is a free web server designed for speed, with all the essential functions of a web server.  The low memory footprint (compared to other web servers) small CPU load and speed optimizations  make lighttpd suitable for servers that are suffering load problems, or for serving static media separately from dynamic content. You can install lighttpd as reverse proxy with apache webserver.

We can now setup lighttpd as reverse-proxy for apache.

How to install Lighttpd for FLV streaming

find lighttpd rpm repository
http://pkgs.repoforge.org/lighttpd/
or
yum install lighttpd
vi /etc/lighttpd/lighttpd.conf
change lighttpd port to 81
server.port = 81
server.use-ipv6 = “disable”
server.username  = “nobody”
server.groupname = “nobody”
touch /var/log/lighttpd/error.log
touch /var/log/lighttpd/access.log
chown -R nobody.nobody /var/log/lighttpd
/etc/init.d/lighttpd restart
When you get restart error like this errors then check with log file permissions.
Starting lighttpd: (log.c.118) opening errorlog ‘/var/log/lighttpd/error.log’ failed: Permission denied
vi /etc/lighttpd/modules.conf
make sure modules and including these for flv steaming…
include “conf.d/simple_vhost.conf”
include “conf.d/flv_streaming.conf”
include ” conf.d/secdownload.conf”
vi conf.d/simple_vhost.conf
example entry
$HTTP[“host”] =~ “(^|\.)www.lighttpdexample\.com:81$” {
server.document-root = “/home/cpanel/public_html/”
secdownload.secret          = “vAfddsv4$%4″
secdownload.document-root   = “/home/cpanel/public_html/media/videos”
secdownload.uri-prefix      = “/flv/”
secdownload.timeout         = 36000
flv-streaming.extensions = ( “.flv” )
h264-streaming.extensions = ( “.mp4″ )
}
or
$HTTP[“host”] != “^(fotoblow.tamilcomedy\.info)$” {
simple-vhost.server-root = “/home/username/public_html/”
simple-vhost.default-host = “fotoblow.tamilcomedy.info”
simple-vhost.document-root = “fotoblow”
}
$HTTP[“host”] =~ “(^|\.)fotoblow.tamilcomedy\.info:81$” {
server.document-root = “/home/username/public_html/fotoblow/”
}
$HTTP[“host”] =~ “(^|\.)www.cpanelkb\.net:81$” {
server.document-root = “/home/username/public_html/fotoblow/”
}
$HTTP[“host”] =~ “(^|\.)tamilcomedy\.info:81$” {
server.document-root = “/home/username/public_html/fotoblow/”
}

Then enable steaming modules.
vi conf.d/flv_streaming.conf
server.modules += ( “mod_flv_streaming”)
flv-streaming.extensions = ( “.flv” )
Normally apache will running on port 80, these entries will redirect .flv extension to port 81. Add the following code in your apache configuration.
vi /etc/httpd/conf/httpd.conf
Add the following entries blow domain config
ProxyPassReverse / http://%{HTTP_HOST}:81/
RewriteEngine on
RewriteCond   %{REQUEST_URI} .*\.(gif|png|jpg|flv|mp4|mp3)$
RewriteRule ^/(.*) http://%{HTTP_HOST}:81/$1 [P]
That’s all !!!

Now restart apache webserver and check your lighttpd access logs /var/log/lighttpd/access.log.

How to reboot cpanel/whm in ssh

to restart the machine via ssh you type 

/etc/init.d/cpanel restart

That’s it…!!

See more at: http://datlinux.blogspot.com.es/

 Enjoy!!!