Linux Administration Tips and Tricks Asterisk ,FreeSwitch And Opensips

Thursday, July 7, 2011

Cricinfo International Scores

Cricinfo International Scores: "Get the latest scores of all the international cricket matches from Cricinfo. Add the Cricinfo International Scores widget now!"

Monday, January 31, 2011

Apache, Tomcat cluster, load balancing using mod_jk

Apache

The Apache HTTP Server Project is a collaborative software development effort aimed at creating a robust, commercial-grade, feature ful, and freely-available source code implementation of an HTTP (Web) server. The project is jointly managed by a group of volunteers located around the world, using the Internet and the Web to communicate, plan, and develop the server and its related documentation. This project is part of the Apache Software Foundation. In addition, hundreds of users have contributed ideas, code, and documentation to the project. This file is intended to briefly describe the history of the Apache HTTP Server and recognize the many contributors.

Tomcat

Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies. The Java Servlet and Java Server Pages specifications are developed under the Java Community Process.
Apache Tomcat is developed in an open and participatory environment and released under the Apache License version 2. Apache Tomcat is intended to be a collaboration of the best-of-breed developers from around the world. We invite you to participate in this open development project.

Download the required software

Apache 2.x Binaries
Tomcat 6.x Binaries
The JK module

Installing of Apache and Tomcat please refer previous posting of installing of Apache and Tomcat

load the mod_jk.so module

LoadModule jk_module modules/mod_jk.so

JkWorkersFile conf/workers.properties
JkLogFile logs/mod_jk.log
JkLogLevel info

below DOcument Root

JkMount /*.jsp loadbalancer
JkMount /servlet/* loadbalancer

And create worker.properties file in /etc/httpd/conf/ directory

#
# workers.properties 
#

# In Unix, we use forward slashes:
ps=/

# list the workers by name

worker.list=tomcat1, tomcat2, loadbalancer

# ------------------------
# First tomcat server
# ------------------------
worker.tomcat1.port=8019
worker.tomcat1.host=localhost
worker.tomcat1.type=ajp13

# Specify the size of the open connection cache.
#worker.tomcat1.cachesize

#
# Specifies the load balance factor when used with
# a load balancing worker.
# Note:
#  ----> lbfactor must be > 0
#  ----> Low lbfactor means less work done by the worker.
worker.tomcat1.lbfactor=100


# ------------------------
# Second tomcat server
# ------------------------
worker.tomcat2.port=8029
worker.tomcat2.host=localhost
worker.tomcat2.type=ajp13

# Specify the size of the open connection cache.
#worker.tomcat2.cachesize

#
# Specifies the load balance factor when used with
# a load balancing worker.
# Note:
#  ----> lbfactor must be > 0
#  ----> Low lbfactor means less work done by the worker.
worker.tomcat2.lbfactor=100


# ------------------------
# Load Balancer worker
# ------------------------

#
# The loadbalancer (type lb) worker performs weighted round-robin
# load balancing with sticky sessions.
# Note:
#  ----> If a worker dies, the load balancer will check its state
#        once in a while. Until then all work is redirected to peer
#        worker.
worker.loadbalancer.type=lb
worker.loadbalancer.balanced_workers=tomcat1, tomcat2

#
# END workers.properties
#

and goto the tomcat server1 and edit the file /opt/tomcat1/conf/server.xml

edit  line

to

to

and goto the tomcat server2 and edit the file /opt/tomcat2/conf/server.xml

to

to

In  apache server

NameVirtualHost *


ServerName localhost1
JkMount /*.jsp tomcat1
JkMount /servlet/* tomcat1


ServerName localhost2
JkMount /*.jsp tomcat2
JkMount /servlet/* tomcat2

And save the files and restart the both tomcat1 and tomcat2 server and apache start

and in browser

http://localhost

apache index.html will dispaly

and http://localhost/index.jsp

request go to server1 and continue if will server load heavy

 it will redirect to server2 or in case of fail over

Redirecting Request from apache to tomcat Server using Mod jk

Apache

The Apache HTTP Server Project is a collaborative software development effort aimed at creating a robust, commercial-grade, feature ful, and freely-available source code implementation of an HTTP (Web) server. The project is jointly managed by a group of volunteers located around the world, using the Internet and the Web to communicate, plan, and develop the server and its related documentation. This project is part of the Apache Software Foundation. In addition, hundreds of users have contributed ideas, code, and documentation to the project. This file is intended to briefly describe the history of the Apache HTTP Server and recognize the many contributors.

Tomcat

Apache Tomcat is an open source software implementation of the Java Servlet and Java Server Pages technologies. The Java Servlet and Java Server Pages specifications are developed under the Java Community Process.

Apache Tomcat is developed in an open and participatory environment and released under the Apache License version 2. Apache Tomcat is intended to be a collaboration of the best-of-breed developers from around the world. We invite you to participate in this open development project.

using mod_proxy.so and mod_proxy_ajp.so

load module in Apache

edit the file /etc/httpd/conf/httpd.conf

uncomment or add

Download Mod_jk binary from

wget http://www.apache.org/dist/tomcat/tomcat-connectors/jk/binaries/linux

workers.properties File

Create the workers.properties in your apache configuration directory. Example:
```
touch /etc/apache2/workers.properties
```

Using your favorite editor (I like to use vi), edit the file and add the following information (tailor it to suit your system):

   workers.tomcat_home=/opt/tomcat6
   workers.java_home=/opt/java
   ps=/
   worker.list=worker1

   worker.worker1.port=8009
   worker.worker1.host=127.0.0.1
   worker.worker1.type=ajp13
   worker.worker1.lbfactor=1

Virtual Host File

This is probably the most vital step that is missing in a lot of how-to's. The JkMount directive must be added to the virtual host file containing port 80. The virtual host definition may also be present in your apache2.conf or httpd.conf file. If not, create a new file called something like default.conf, add the contents below, and put default.conf somewhere in which it can be properly loaded by apache2.conf (or httpd.conf).


   ServerName your.hostname.com

   # Send servlet for context /jsp-examples to worker named worker1
   JkMount /jsp-examples worker1

   # Send JSPs for context /jsp-examples/* to worker named worker1
   JkMount /jsp-examples/* worker1

save the file and restart the httpd server

and goto tomcat install directory

conf directory and edit server.xml

and restart the tomcat server

Test It

To test your setup, type http://localhost/jsp-examples. It should also work with http://localhost:8080/jsp-examples.

it will redirect to tomcat jsp-examples home page

Creating Secure Site in Tomact and Apache

Apache Tomcat

Installation of Apache Tomcat

Downloads the tar file for

http://apache.cs.utah.edu/tomcat/tomcat-6/v6.0.30/bin/apache-tomcat-6.0.30.tar.gz

tar -zxvf Apache-tomcat-6.0.30.tar.gz

cp -r tomcat /opt/tomcat

and write a start up scripts

create a file tomcat in /etc/init.d give chmod 777 permissions to tomcat file

copy the

#!/bin/bash
# chkconfig: - 10 20
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
PATH=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/bin:$PATH:$HOME/bin:./
export PATH
export JAVA_HOME=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre
export CLASSPATH=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/lib/tools.jar:/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/lib/dt.jar:./
export CATALINA_HOME=/opt/tomcat/
export CATALINA_TMPDIR=/opt/tomcat/temp
unset USERNAME

start()
{
cd /opt/tomcat6/bin/
sh startup.sh
}
stop()
{
cd /opt/tomcat/bin/
sh shutdown.sh
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
*)
echo "start | stop | restart"
esac

save the file

and start tomcat /etc/init.d/tomcat start

and stop tomcat /etc/init.d/tomcat stop

http://localhost:8080

to create Secure site https

goto

cd /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/bin

keytool -genkey -alias name-keypass admin123 -keystore domainnamecom.bin -storepass admin123

Note:keypass and storepass must be same password

it generate a file with name domainnamecom.bin in same directory

copy the file domainnamecom.bin to /opt/tomcat/webapps

and Goto cd /opt/tomcat/conf

and edit server.xml

and uncommmnet

               maxThreads="150" scheme="https" secure="true"
               clientAuth="false" sslProtocol="TLS" keystoreFile="../webapps/domainnamecom.bin" keystorePass="admin123" />

and save the server.xml

and restart the tomcat server

https://localhost:8443

Apache Server

Compiling and Installing

Downloads source tar http://httpd.apache.org/download.cgi

tar -zxvf httpd-NN.tar

cd httpd

./configure --prefix=PREFIX

make

make install

configuration file is in

/etc/httpd/conf/httpd.conf

to start

/etc/init.d/httpd start

to stop

/etc/init.d/httpd stop

and in browser

http://localhost

To Create secure site

install mod_ssl and open_ssl

then generate a key file

openssl genrsa -out /etc/httpd/ssl/domain.com.key 1024

and using the key file generate certiifcate for 999 days

openssl req -new -key /etc/httpd/ssl/domain.com.key -x509 -out /etc/httpd/ssl/domainname.crt -days 999

and edit the /etc/httpd/conf/httpd.conf



 copy the lines

DocumentRoot "/var/www/html/ssl_doc_root/"

ServerAdmin you@mycorp.com

ServerName servername

SSLEngine On

SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL

SSLCertificateFile /etc/httpd/ssl/domain.crt

SSLCertificateKeyFile /etc/httpd/ssl/domain.com.key

SetEnvIf User-Agent ".*MSIE.*" \

nokeepalive ssl-unclean-shutdown \

downgrade-1.0 force-response-1.0

save the file

restart the httpd server

and in browser

https://localhost

Thursday, January 20, 2011

FreeSwitch Installation Steps in centos and Debain

Freeswitch

FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any other form of media. It was created in 2006 to fill the void left by proprietary commercial solutions. FreeSWITCH also provides a stable telephony platform on which many telephony applications can be developed using a wide range of free tools.

FreeSWITCH was originally designed and implemented by Anthony Minessale with the help of Brian West and Michael Jerris. All 3 are former developers of the popular Asterisk open source PBX. The project was initiated to focus on several design goals including modularity, cross-platform support, scalability and stability. Today, many more developers and users contribute to the project on a daily basis.

We support various communication technologies such as Skype, SIP, H.323 and GoogleTalk making it easy to interface with other open source PBX systems such as sipXecs, Call Weaver, Bayonne, YATE or Asterisk.

FreeSWITCH supports many advanced SIP features such as presence/BLF/SLA as well as TCP TLS and sRTP. It also can be used as a transparent proxy with and without media in the path to act as a SBC (session border controller) and proxy T.38 and other end to end protocols.

FreeSWITCH supports both wide and narrow band codecs making it an ideal solution to bridge legacy devices to the future. The voice channels and the conference bridge module all can operate at 8, 12, 16, 24, 32 or 48 kilohertz and can bridge channels of different rates. The G.729 codec is also available under a commercial license.

FreeSWITCH builds natively and runs standalone on several operating systems including Windows, Max OS X, Linux, BSD and Solaris on both 32 and 64 bit platforms.

FreeSWITCH supports FAX, both over audio and T.38, and can gateway between the two.

Centos Or Redhat

Installation Steps

yum install subversion autoconf automake libtool gcc-c++ ncurses-devel make expat-devel zlib zlib-devel

Dependencies For Additional Modules in freeswitch

yum install nano unixODBC-devel openssl-devel gnutls-devel libogg-devel libvorbis-devel curl-devel

Installation git in centos

yum install gettext-devel expat-devel curl-devel zlib-devel openssl-devel

wget http://kernel.org/pub/software/scm/git/git-1.6.1.tar.gz

untar the git source code

tar xvfz git-1.6.1.tar.gz

cd git-1.6.1.tar.gz

make prefix=/usr/local all

make prefix=/usr/local install

Downloads the source of Freeswitch from git and install

cd /usr/src/
git clone git://git.freeswitch.org/freeswitch.git
cd /usr/src/freeswitch
./bootstrap.sh
./configure
make install
make cd-sounds-install
make cd-moh-install

it install  default modules of Freeswitch if you needed additional modules

go to /usr/src/freeswitch

edit the modules.conf

uncomment the modules need

and

make install

In Debian

apt-get install autoconf automake g++ git-core libjpeg62-dev libncurses5-dev libtool make

cd /usr/src/
git clone git://git.freeswitch.org/freeswitch.git
cd /usr/src/freeswitch
./bootstrap.sh
./configure
make install
make cd-sounds-install
make cd-moh-install

it install  default modules of Freeswitch if you needed additional modules
go to /usr/src/freeswitch 
edit the modules.conf
uncomment the modules need
and 
make install

Start and stop commands

start
/usr/local/freeswitch/bin/freeswitch -nc  ;non console

stop

/usr/local/freeswitch/bin/freeswitch -stop

start up scripts

create a file in /etc/init.d/freeswitch

#!/bin/sh
#
# freeswitch.sh - startup script for freeswitch on FreeBSD
#
# This goes in /usr/local/etc/rc.d and gets run at boot-time.

case "$1" in

    start)
    if [ -x /usr/local/freeswitch/bin/freeswitch ] ; then
        echo -n " freeswitch"
        /usr/local/freeswitch/bin/freeswitch -nc &
    fi
    ;;

    stop)
    if [ -x /usr/local/freeswitch/bin/freeswitch ] ; then
        echo -n " freeswitch"
        /usr/local/freeswitch/bin/freeswitch -stop &
    fi
    ;;

    *)
    echo "usage: $0 { start | stop }" >&2
    exit 1
    ;;

esac

and give permissions of

chmod 755

chkconfig --add freeswitch
chkconfig --level 5 freeswitch on
chkconfig --list freeswitch

Read the File With Comma separte and copy the files to directory using Perl script

To read the File and copy the files to the directorywith comma separate need the the Package

FileHandle.

#!/usr/bin/perl

use FileHandle;

if (@ARGV != 2) {
    print " the argument is invalided \n" ;
exit 1;
}

$file_name = shift;
$output_path = shift;

print "$file_name ,$output_path \n";
$dir1 = "/opt/test";

open (FILE, "$file_name") or die "Cannot open $file_name $!\n";

@fields;
while () {
    chomp;
    @fields = split(/\,/);

      foreach my $item (@fields) {
      #print "$item \n";
   }

    if ($#fields < 1) {
        print " Error in file format \n";
        next;
    }

   $file_id = $fields[4];
    print " $file_id \n";

    `cp -r "$dir1/$file_id" "$output_path/$file_id" `;

}
close (FILE);

give permissons to file of script and

perl test.pl new.txt /opt/test/copy

new.txt file format
1,wer,2,root,welcome.txt
2,wee,3,root,welcome1.log
3,333,4,root,sysd.log

Reading the Csv File and inser into Database using the Perl Script

To read the CSV File or Xls file the following packages is needed

Spreadsheet::ParseExcel::Simple
Spreadsheet::ParseExcel
DBI

the perl script

#!/usr/bin/perl

use DBI;
use Spreadsheet::ParseExcel::Simple;
use Spreadsheet::ParseExcel;

my $workbook = Spreadsheet::ParseExcel::Workbook->Parse('Agent Details.xls');

#==================================================
#==================================================
foreach $sheet (@{$workbook->{Worksheet}}) {

       foreach $col ($sheet->{MinCol} .. $sheet->{MaxCol}) {

               if ($sheet->{Cells}[0][$col]->{Val} eq "COL1") {
                       $col1= $col;
               }
               if ($sheet->{Cells}[0][$col]->{Val} eq "COL2") {
                       $col2= $col;
               }
               if ($sheet->{Cells}[0][$col]->{Val} eq "COL3") {
                       $col3= $col;
               }
               if ($sheet->{Cells}[0][$col]->{Val} eq "COL4") {
                       $col4= $col;
               }
       }
#==================================================
#==================================================
       foreach $row ($sheet->{MinRow}+1 .. $sheet->{MaxRow}) {

                  $col_1 = $sheet->{Cells}[$row][$col1]->{Val};
                  $col_2 = $sheet->{Cells}[$row][$col2]->{Val};
                  $col_3 = $sheet->{Cells}[$row][$col3]->{Val};
                  $col_4 = $sheet->{Cells}[$row][$col4]->{Val};

#==================================================
#==================================================
                if( $col_1!= ' ' && $col_2!= ' ' && col_3 !=' ' && col_4 != ' ')
                {
                    $dbh = DBI->connect("DBI:mysql:databasename:localhost:3306", "username", "password")
                    or die "Couldn't connect to database: " . DBI->errstr;
                    $stmt = "INSERT INTO databasename.tablename (col1,col2,col3,col4) values ( '$col_1' ,'$col_2','$col_3','$col_4');";
                    $affected_rows = $dbh->do($stmt);
                }
       }
}
#==================================================