vtiger Installation On CentOS 5.x

vtiger Installation On CentOS 5.x

vtiger is the CRM / complete tracking solution I have looked for and needed for 10 years!!! An all-in-one tracking everything organic package that ties everything together - because every task has many things associated with it, and vtiger works the way people think.
I will install vtiger in the /var/www/html/vtigercrm directory on a CentOS 5.x (i386) system where /var/www/html is the document root of the web site where I install vtiger.
vtiger can be installed as follows:

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

yum install php-mysql php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc php-mapserver php-mbstring php-mcrypt php-mssql php-snmp php-soap php-tidy phpmyadmin mysql mysql-server httpd libpng libpng-devel libjpeg libjpeg-devel freetype freetype-devel zlib xFree86-dev openssl openssl-devel krb5-devel imap-2004d

php.ini configuration:

Variable	Value
allow_call_time_pass_reference	on
error_reporting	E_WARNING & ~E_NOTICE
safe_mode	off
display_errors	on
file_uploads	on
max_execution_time	600
memory_limit	64M
log_errors	off
output_buffering	on
register_globals	off
short_open_tag	on

wget http://sourceforge.net/projects/vtigercrm/files/vtiger%20CRM%205.1.0/vtigercrm-5.1.0.tar.gz

tar -xvzf vtigercrm-5.1.0.tar.gz

chmod -R a+rw /var/www/html/vtigercrm

Open a browser - you can access the vtiger installer under:

http:///vtigercrm/install.php

Squid Proxy Cache Server Installation and Configuration

Squid is a proxy caching server. If you are Linux sysadmin, you can use squid to control internet access at your work environment.
This beginners guide will give a jump-start on how to setup squid on Linux to restrict internet access in an network.

Install Squid

You should install the following three squid related packages on your system.

• squid
• squid-common
• squid-langpack

On Debian and Ubuntu, use aptitude to install squid as shown below. On CentOS, use yum to install the squid package.

$ yum install squid

Check Configuration and Startup scripts

Apart from installing the squid related packages, it also creates the /etc/squid/squid.conf and /etc/init.d/squid startup script.
By default Squid runs on 3128 port. You can verify this from the squid.conf file. You can also set the visible_hostname parameter in your squid.conf, which will be used in error_log. If you don’t define, squid gets the hostname value using gethostname() function.

# vim /etc/squid/squid.conf
visible_hostname ubuntuserver
httpd_port 3128

Note: The http port number (3128) specified in the squid.conf should be entered in the proxy setting section in the client browser. If squid is built with SSL, you can use https_port option inside squid.conf to define https squid.

Start Squid and View Logs

Start the Squid proxy caching server as shown below.

# service squid start
squid start/running, process 11743

Squid maintains three log files (access.log, cache.log and store.log) under /var/log/squid directory.
From the /var/log/squid/access.log, you can view who accessed which website at what time. Following is the format of the squid access.log record.

time elapsed remotehost code/status bytes method URL rfc931     peerstatus/peerhost

To disable logging in squid, update the squid.conf with the following information.

# to disable access.log
cache_access_log /dev/null

# to disable store.log
cache_store_log none

# to disable cache.log
cache_log /dev/null

Squid Usage 1: Restrict Access to Specific Websites

This is how you can restrict folks from browsing certain website when they are connected to your network using your proxy server.
Create a file called restricted_sites and list all sites that you would want to restrict the access.

# vim /etc/squid/restricted_sites
www.youtube.com
mail.yahoo.com

www.hotmail.com

www.gmail.com 

Modify the squid.conf to add the following.

# vim /etc/squid/squid.conf
acl RestrictedSites  dstdomain "/etc/squid/restricted_sites"
http_access deny RestrictedSites

Squid Usage 2: Allow Access to Websites Only During Specific Time

Some organization might want to allow employees to surf or download from the internet only during specific timeperiods.
The squid.conf configuration shown below will allow internet access for employees only between 9:00AM and 18:00 during weekdays.

# vim /etc/squid/squid.conf
acl official_hours time M T W H F 09:00-18:00
http_access deny all
http_access allow official_hours

Squid Usage 3 : Restrict Access to Particular Network

Instead of restricting specific sites, you can also provide access only to certain network and block everything else. The example below, allows access only to the 192.168.10.* internal network.

# vim /etc/squid/squid.conf
acl branch_offices src 192.168.10.0/24
http_access deny all
http_access allow branch_offices

Squid Usage 4 : Use Regular Expression to Match URLs

You can also use regular expression to allow or deny websites.
First create a blocked_sites files with a list of keywords.

# cat /etc/squid/blocked_sites
soccer
movie
www.example.com

Modify the squid.conf to block any sites that has any of these keywords in their url.

# vim /etc/squid/squid.conf
acl blocked_sites url_regex -i "/etc/squid/blocked_sites"
http_access deny blocked_sites
http_access allow all

In the above example, -i option is used for ignoring case for matching. So, while accessing the websites, squid will try to match the url with any of the pattern mentioned in the above blocked_sites file and denies the access when it matches.

SARG – Squid Analysis Report Generator

Download and install SARG to generate squid usage reports.
Use the sarg-reports command to generate reports as shown below.

# to generate the report for today
sarg-report today

# on daily basis
sarg-report daily

# on weekly basis
sarg-report weekly

# on monthly basis
sarg-report monthly

Add the sarg-report to the crontab.
The reports generated by sarg are stored under /var/www/squid-reports. These are html reports can you can view from a browser.

$ ls /var/www/squid-reports
Daily  index.hyml

$ ls /var/www/squid-reports/Daily
2010Sept1-2010Sept2  images  index.html

How to Recover Deleted Files in Fedora / Ubuntu

foremost is a forensics application to recover files based on their headers, footers, and internal data structures. Foremost can work on image files, such as those generated by dd, Safeback, Encase, etc, or directly on a drive. This short article shows how you can use foremost to recover deleted files.

Currently foremost can recover the following file types:

• jpg - Support for the JFIF and Exif formats including implementations used in modern digital cameras.
• gif
• png
• bmp - Support for windows bmp format.
• avi
• exe - Support for Windows PE binaries, will extract DLL and EXE files along with their compile times.
• mpg - Support for most MPEG files (must begin with 0x000001BA)
• wav
• riff - This will extract AVI and RIFF since they use the same file format (RIFF). note faster than running each separately.
• wmv - Note may also extract -wma files as they have similar format.
• mov
• pdf
• ole - This will grab any file using the OLE file structure. This includes PowerPoint, Word, Excel, Access, and StarWriter
• doc - Note it is more efficient to run OLE as you get more bang for your buck. If you wish to ignore all other ole files then use this.
• zip - Note is will extract .jar files as well because they use a similar format. Open Office docs are just zipâd XML files so they are extracted
  as well. These include SXW, SXC, SXI, and SX? for undetermined OpenOffice files.
• rar
• htm
• cpp - C source code detection, note this is primitive and may generate documents other than C code.

You can tweak /etc/foremost.conf to add support for more file types.
Please note that there's no guarantee that foremost will succeed in recovering your files, but at least there's a chance.

2 Installing foremost

On Fedora and Ubuntu, foremost can be installed as follows:

#yum install foremosrt

 #apt-get install foremost
#apt-get install scalpel

Before we can use Scalpel, we must define some file types that Scalpel should search for in /etc/scalpel/scalpel.conf. By default, all file types are commented out. Uncomment the lines you want, for instance if you want to recover PDF files:

Press Alt + F2 and type: gedit /etc/scalpel/scalpel.conf

and uncomment these lines:

       pdf     y       5000000 %PDF  %EOF\x0d  REVERSE
     pdf     y       5000000 %PDF  %EOF\x0a  REVERSE

Scalpel can be used as follows to try to recover the files:

scalpel /dev/sda1 -o output 

-o defines the directory where Scalpel will place the recovered files - in this case the directory is named output and is a subdirectory of the directory where we are running the scalpel command from; the directory must not exist because otherwise scalpel will refuse to start.

After Scalpel has finished, you will find a folder called output in the directory from where you called Scalpel. The audit.txt contains a summary of what Scalpel has done and the pdf-0-0/ subdirectory contains the pdf files that Scalpel has recovered.

Before you run Scalpel the next time from the same directory, you must either delete/rename the current output/ directory (because Scalpel will not start if the output directory is already existing) or use specify another output directory.

Using Foremost

Foremost Syntax

foremost  [-h][-V][-d][-vqwQT][-b][-o] [-t][-s][-i]

Available Options

-h Show a help screen and exit.
-V Show copyright information and exit.
-d Turn on indirect block detection, this works well for Unix file systems.
-T Time stamp the output directory so you don’t have to delete the output dir when running multiple times.
-v Enables verbose mode. This causes more information regarding the current state of the program to be dis-played on the screen, and is highly recommended.
-q Enables quick mode. In quick mode, only the start of each sector is searched for matching headers. That is,the header is searched only up to the length of the longest header. The rest of the sector, usually about 500 bytes, is ignored. This mode makes foremost run con- siderably faster, but it may cause you to miss files that are embedded in other files. For example, using quick mode you will not be able to find JPEG images embedded in Microsoft Word documents.

Quick mode should not be used when examining NTFS file systems. Because NTFS will store small files inside the Master File Table, these files will be missed during quick mode.

-Q Enables Quiet mode. Most error messages will be sup-pressed.
-w Enables write audit only mode. No files will be extracted.
-a Enables write all headers, perform no error detection in terms of corrupted files.
-b number Allows you to specify the block size used in foremost. This is relevant for file naming and quick searches. The default is 512. ie. foremost -b 1024 image.dd

-k number Allows you to specify the chunk size used in foremost.This can improve speed if you have enough RAM to fit the image in. It reduces the checking that occurs between chunks of the buffer. For example if you had > 500MB of RAM. ie. foremost -k 500 image.dd

-i file The file is used as the input file. If no input file is specified or the input file cannot be read then stdin is used.

-o directory Recovered files are written to the directory directory.

-c file Sets the configuration file to use. If none is speci-fied, the file “foremost.conf” from the current direc-tory is used, if that doesn’t exist then “/etc/fore-most.conf” is used. The format for the configuration file is described in the default configuration file included with this program. See the CONFIGURATION FILE section below for more information.

-s number Skips number blocks in the input file before beginning the search for headers. ie.

foremost -s 512 -t  jpeg -i /dev/hda1

Foremost examples

Search for jpeg format skipping the first 100 blocks

su -c foremost -s 100 -t jpg -i image.dd

Only generate an audit file, and print to the screen (verbose mode)

su -c foremost -av image.dd

Search all defined types

su -c foremost -t all -i image.dd

Search for gif and pdf

su -c foremost -t gif,pdf -i image.dd

Search for office documents and jpeg files in a Unix file sys-tem in verbose mode.

su -c foremost -v -t ole,jpeg -i image.dd

Run the default case

su -c foremost image.dd

image.dd means you need to enter your hardisk mount point i.e /dev/sda1 or /dev/sda2

  (pls use for ubuntu sudo )

Using Amazon Web Services

This presentation assumes you have never used Amazon Web Services (AWS) in any way. We will step through a tutorial to create an AWS account, login, start a server, and access the running server on the Internet.

Terminology
❖ AWS - Amazon Web Services
❖ EC2 - Elastic Compute Cloud
❖ S3 - Simple Storage Service

Checklist
❖ Access Key ID
❖ Secret Access Key
❖ Account Number
❖ X.509 Private Key File
❖ X.509 Certificate File

Register for EC2/S3

Launching a server

❖ Elastic IP
❖ Elastic Block Store
❖ Custom AMIs
❖ Elastic Fox
❖ S3 Fox
❖ AWS CLI tools
http://sourceforge.net/projects/elasticfox/
http://www.s3fox.net/

hadoop install on AMIs centos!

cd /etc/yum.repos.d/
[root@ip-10-250-57-221 yum.repos.d]# ll
total 4
-rw-r--r-- 1 root root 2245 Oct  1  2009 CentOS-Base.repo
[root@ip-10-250-57-221 yum.repos.d]# wget http://archive.cloudera.com/redhat/cdh/cloudera-cdh3.repo
--2010-07-12 08:47:56--  http://archive.cloudera.com/redhat/cdh/cloudera-cdh3.repo
Resolving archive.cloudera.com... 184.73.170.21
Connecting to archive.cloudera.com|184.73.170.21|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 211 [text/plain]
Saving to: `cloudera-cdh3.repo'

100%[======================================>] 211         --.-K/s   in 0s     

2010-07-12 08:47:56 40.2 MB/s - `cloudera-cdh3.repo' saved [211/211]

[root@ip-10-250-57-221 yum.repos.d]# ls
CentOS-Base.repo  cloudera-cdh3.repo
[root@ip-10-250-57-221 yum.repos.d]#


yum install java-1.6.0-openjdk hadoop-0.20
Loaded plugins: fastestmirror
Determining fastest mirrors
  addons: mirror.fdcservers.net
  base: centos.mirror.nac.net
  extras: mirror.vcu.edu
  updates: mirror.rackspace.com
addons                                                   |  951 B     00:00    
addons/primary                                           |  202 B     00:00    
base                                                     | 2.1 kB     00:00    
base/primary_db                                          | 1.6 MB     00:00    
cloudera-cdh3                                            |  951 B     00:00    
cloudera-cdh3/primary                                    |  18 kB     00:00    
cloudera-cdh3                                                             62/62
extras                                                   | 2.1 kB     00:00    
extras/primary_db                                        | 185 kB     00:06    
updates                                                  | 1.9 kB     00:00    
updates/primary_db                                       | 296 kB     00:00    
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package hadoop-0.20.noarch 0:0.20.2+320-1 set to be updated
---> Package java-1.6.0-openjdk.i386 1:1.6.0.0-1.11.b16.el5 set to be updated
--> Processing Dependency: jpackage-utils >= 1.7.3-1jpp.2 for package: java-1.6.0-openjdk
--> Processing Dependency: libgif.so.4 for package: java-1.6.0-openjdk
--> Processing Dependency: tzdata-java for package: java-1.6.0-openjdk
--> Running transaction check
---> Package giflib.i386 0:4.1.3-7.1.el5_3.1 set to be updated
---> Package jpackage-utils.noarch 0:1.7.3-1jpp.2.el5 set to be updated
---> Package tzdata-java.i386 0:2010i-1.el5 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package              Arch     Version                    Repository       Size
================================================================================
Installing:
 hadoop-0.20          noarch   0.20.2+320-1               cloudera-cdh3    21 M
 java-1.6.0-openjdk   i386     1:1.6.0.0-1.11.b16.el5     updates          37 M
Installing for dependencies:
 giflib               i386     4.1.3-7.1.el5_3.1          base             39 k
 jpackage-utils       noarch   1.7.3-1jpp.2.el5           base             61 k
 tzdata-java          i386     2010i-1.el5                updates         176 k

Transaction Summary
================================================================================
Install      5 Packages        
Update       0 Packages        
Remove       0 Packages        

Total download size: 58 M
Is this ok [y/N]: y
Downloading Packages:
1/5: giflib-4.1.3-7.1.el5_3.1.i386.rpm                 |  39 kB     00:00    
2/5: jpackage-utils-1.7.3-1jpp.2.el5.noarch.rpm        |  61 kB     00:00    
3/5: tzdata-java-2010i-1.el5.i386.rpm                  | 176 kB     00:00    
4/5: hadoop-0.20-0.20.2+320-1.noarch.rpm               |  21 MB     00:01    
5/5: java-1.6.0-openjdk-1.6.0.0-1.11.b16.el5.i386.rpm  |  37 MB     00:03    
--------------------------------------------------------------------------------
Total                                            12 MB/s |  58 MB     00:04    
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : giflib                                                   1/5
  Installing     : jpackage-utils                                           2/5
  Installing     : tzdata-java                                              3/5
  Installing     : hadoop-0.20                                              4/5
  Installing     : java-1.6.0-openjdk                                       5/5

Installed:
  hadoop-0.20.noarch 0:0.20.2+320-1                                            
  java-1.6.0-openjdk.i386 1:1.6.0.0-1.11.b16.el5                               

Dependency Installed:
  giflib.i386 0:4.1.3-7.1.el5_3.1    jpackage-utils.noarch 0:1.7.3-1jpp.2.el5  
  tzdata-java.i386 0:2010i-1.el5   

Complete!
[root@ip-10-250-57-221 yum.repos.d]#

[root@ip-10-250-57-221 conf]# vi hadoop-env.sh
# The java implementation to use.  Required.
  export JAVA_HOME=/usr/java/jdk1.6.0_14/ remove # and set JAVA environment


[root@ip-10-250-57-221 java]# vi ~/.bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin:$JAVA_HOME/bin:
JAVA_HOME=/usr/java/jdk1.6.0_14/
export PATH
export JAVA_HOME
unset USERNAME

[root@ip-10-250-57-221 ~]# . .bash_profile
[root@ip-10-250-57-221 ~]# . .bash_profile
[root@ip-10-250-57-221 ~]# . .bash_profile
[root@ip-10-250-57-221 ~]# . .bash_profile
[root@ip-10-250-57-221 ~]# java -version
java version "1.6.0_14"
JavaTM SE Runtime Environment build 1.6.0_14-b08
Java HotSpotTM Client VM build 14.0-b16, mixed mode
[root@ip-10-250-57-221 ~]# echo $JAVA_HOME
/usr/java/jdk1.6.0_14/
[root@ip-10-250-57-221 ~]# echo $PATH
/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/home/ec2/bin:/home/ec2/bin:/root/bin:/home/ec2/bin:/root/bin:/usr/java/default/bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin:



[root@ip-10-250-57-221 java]# vi ~/.bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin:$JAVA_HOME/bin:
JAVA_HOME=/usr/java/jdk1.6.0_14/
HADOOP_HOME=/usr/lib/hadoop-0.20
export PATH
export JAVA_HOME
export HADOOP_HOME
unset USERNAME

echo $HADOOP_HOME
/usr/lib/hadoop-0.20
[root@ip-10-250-57-221 hadoop-0.20]# echo $PATH
/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/home/ec2/bin:/home/ec2/bin:/root/bin:/home/ec2/bin:/root/bin:/usr/java/default/bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin::/home/ec2/bin:/root/bin:/usr/java/jdk1.6.0_14//bin:

http://pastie.org/1083764

/usr/lib/hadoop-0.20/conf
conf/core-site.xml:
 configuration
  property
   namefs.default.name/name
   valuehdfs://elasticurl:9000/value
  /property
 /configuration
conf/hdfs-site.xml:
 configuration
  property
   namedfs.replication/name
   value1/value
  /property
 /configuration
conf/mapred-site.xml:
 configuration
  property
   namemapred.job.tracker/name
   valueelasticurl:9001/value
  /property
 /configuration


Setup passphraseless ssh
Now check that you can ssh to the localhost without a passphrase:
# ssh localhost
If you cannot ssh to localhost without a passphrase, execute the following commands:
# ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
# cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

Format a new distributed-filesystem:
# bin/hadoop namenode -format
Start the hadoop daemons:
# bin/start-all.sh

open port 50070 and 50030

Browse the web interface for the NameNode and the JobTracker; by default they are
available at:
NameNode - http://elasticurl:50070/
JobTracker - http://elasticurl:50030/

JBoss Install on Cent OS AMIs

[root@ip-10-251-81-156 ~]# uname -a
Linux ip-10-251-81-156 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:34:28 EST 2008 x86_64 x86_64
x86_64 GNU/Linux
[root@ip-10-251-81-156 ~]# yum install mysql mysql-server httpd java-1.6.0-openjdk -y
Loaded plugins: fastestmirror
Determining fastest mirrors
 * addons: mirror.anl.gov
 * base: mirror.cogentco.com
 * extras: mirror.cogentco.com
 * updates: centos.mirrors.tds.net
addons                                  | 951 B 00:00
addons/primary                                 | 204 B 00:00
base                                 | 2.1 kB 00:00
base/primary_db                                 | 2.1 MB 00:00
extras                                | 2.1 kB 00:00
extras/primary_db                                | 226 kB 00:00
updates                                 | 1.9 kB 00:00
updates/primary_db                                 | 346 kB 00:00
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package httpd.x86_64 0:2.2.3-43.el5.centos set to be updated
addons/filelists                           | 197 B 00:00
base/filelists_db                           | 4.0 MB 00:00
extras/filelists_db                          | 220 kB 00:00
updates/filelists_db                           | 1.2 MB 00:00
---> Package java-1.6.0-openjdk.x86_64 1:1.6.0.0-1.11.b16.el5 set to be updated
--> Processing Dependency: jpackage-utils >= 1.7.3-1jpp.2 for package: java-1.6.0-openjdk
--> Processing Dependency: tzdata-java for package: java-1.6.0-openjdk
--> Processing Dependency: libgif.so.4()(64bit) for package: java-1.6.0-openjdk
---> Package mysql.i386 0:5.0.77-4.el5_5.3 set to be updated
--> Processing Dependency: perl(DBI) for package: mysql
---> Package mysql.x86_64 0:5.0.77-4.el5_5.3 set to be updated
---> Package mysql-server.x86_64 0:5.0.77-4.el5_5.3 set to be updated
--> Processing Dependency: perl-DBD-MySQL for package: mysql-server
--> Running transaction check
---> Package giflib.x86_64 0:4.1.3-7.1.el5_3.1 set to be updated
---> Package jpackage-utils.noarch 0:1.7.3-1jpp.2.el5 set to be updated
---> Package perl-DBD-MySQL.x86_64 0:3.0007-2.el5 set to be updated
---> Package perl-DBI.x86_64 0:1.52-2.el5 set to be updated
---> Package tzdata-java.x86_64 0:2010i-1.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
=======================================================================
=========
 Package            Arch     Version                   Repository Size
=======================================================================
=========
Installing:
 httpd            x86_64 2.2.3-43.el5.centos              base    1.2 M
 java-1.6.0-openjdk x86_64 1:1.6.0.0-1.11.b16.el5 updates                          35 M
 mysql                i386      5.0.77-4.el5_5.3            updates 4.8 M
 mysql                x86_64 5.0.77-4.el5_5.3                  updates 4.8 M
 mysql-server            x86_64 5.0.77-4.el5_5.3                   updates 9.8 M
Installing for dependencies:
 giflib             x86_64 4.1.3-7.1.el5_3.1                 base          39 k
 jpackage-utils         noarch 1.7.3-1jpp.2.el5                 base         61 k
 perl-DBD-MySQL               x86_64 3.0007-2.el5                       base     148 k
 perl-DBI              x86_64 1.52-2.el5                     base         600 k
 tzdata-java           x86_64 2010i-1.el5                     updates 176 k
Transaction Summary
=======================================================================
=========
Install 10 Package(s)
Update        0 Package(s)
Remove         0 Package(s)
Total download size: 57 M
Downloading Packages:
(1/10): giflib-4.1.3-7.1.el5_3.1.x86_64.rpm                    | 39 kB 00:00
(2/10): jpackage-utils-1.7.3-1jpp.2.el5.noarch.rpm                 | 61 kB 00:00
(3/10): perl-DBD-MySQL-3.0007-2.el5.x86_64.rpm                           | 148 kB 00:00
(4/10): tzdata-java-2010i-1.el5.x86_64.rpm                      | 176 kB 00:00
(5/10): perl-DBI-1.52-2.el5.x86_64.rpm                         | 600 kB 00:00
(6/10): httpd-2.2.3-43.el5.centos.x86_64.rpm                     | 1.2 MB 00:00
(7/10): mysql-5.0.77-4.el5_5.3.i386.rpm                       | 4.8 MB 00:01
(8/10): mysql-5.0.77-4.el5_5.3.x86_64.rpm                        | 4.8 MB 00:00
(9/10): mysql-server-5.0.77-4.el5_5.3.x86_64.rpm                     | 9.8 MB 00:00
(10/10): java-1.6.0-openjdk-1.6.0.0-1.11.b16.el5.x86_64. | 35 MB 00:02
--------------------------------------------------------------------------------
Total                                  11 MB/s | 57 MB 00:05
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : perl-DBI                                            1/10
  Installing : mysql                                             2/10
  Installing : perl-DBD-MySQL                                             3/10
  Installing : giflib                                          4/10
  Installing : mysql-server                                          5/10
  Installing : httpd                                           6/10
  Installing : jpackage-utils                                       7/10
  Installing : tzdata-java                                         8/10
  Installing : mysql                                             9/10
  Installing : java-1.6.0-openjdk                                      10/10
Installed:
  httpd.x86_64 0:2.2.3-43.el5.centos
  java-1.6.0-openjdk.x86_64 1:1.6.0.0-1.11.b16.el5
  mysql.i386 0:5.0.77-4.el5_5.3
  mysql.x86_64 0:5.0.77-4.el5_5.3
  mysql-server.x86_64 0:5.0.77-4.el5_5.3
Dependency Installed:
  giflib.x86_64 0:4.1.3-7.1.el5_3.1 jpackage-utils.noarch 0:1.7.3-1jpp.2.el5
  perl-DBD-MySQL.x86_64 0:3.0007-2.el5 perl-DBI.x86_64 0:1.52-2.el5
  tzdata-java.x86_64 0:2010i-1.el5
Complete!
[root@ip-10-251-81-156 ~]# vi .bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
       . ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin:
JAVA_HOME=/usr/java/jdk1.6.0_16/
export PATH
export JAVA_HOME
unset USERNAME
:wq
[root@ip-10-251-81-156 ~]# . .bash_profile
[root@ip-10-251-81-156 ~]# . .bash_profile
[root@ip-10-251-81-156 ~]# echo $JAVA_HOME
/usr/java/jdk1.6.0_16/
[root@ip-10-251-81-156 ~]# echo $PATH
echo $PATH
/
usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/home/e
c2/bin:/home/ec2/bin:/root/bin:/usr/java/default/bin:/bin
[root@ip-10-251-81-156 ~]# java -version
java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, mixed mode)
#mkdir /opt/jboss
[root@ip-10-251-81-156 ~]# wget http://sourceforge.net/projects/jboss/files/JBoss/JBoss-
5.1.0.GA/jboss-5.1.0.GA.zip/download
#unzip jboss-5.1.0.GA.zip -d /opt/jboss
#sh run.sh -b (ifconfig find out what is ipaddress is there for AMIs )

Resetting windows password using linux livecd

1. Put the livecd in the cd/dvd drive and boot your windows machine from the livecd.
(The application that we are going to use is chntpw. In this example, we will be using fedora/ ubuntu livecd.)
2. Once booted, open the terminal and check for tool named "chntpw". If not there, you can install it using:

$ yum install chntpw (if your using ubuntu live cd $ sudo apt-get install chntpw)

3. After the tool is ready, mount the windows partition. Use "fdisk -lu" to check which partition should be mounted. To mount /dev/sda1 (assuming your windows partition is on /dev/sda1), use below command:

$ su mount /dev/sda1 /mnt

4. Find SAM file on the windows partition. Usually it is located in Windows/System32/config. Run the chntpw on the SAM file.

$ cd /mnt/Windows/System32/config

List all user in the SAM record

$ chntpw -l SAM

Interactively edit user credential

$ chntpw -i SAM

5. Follow the wizard of chntpw and clear administrator or any user's password that you want to access.

6. Save changes and restart machine. You can access the windows without password for administrator and users that you have cleared their password. Make sure you take out the livecd, otherwise the machine will boot into it instead of windows.

chntpw
chntpw version 0.99.6 080526 (sixtyfour), (c) Petter N Hagen
chntpw: change password of a user in a NT/2k/XP/2k3/Vista SAM file, or invoke registry editor.
chntpw [OPTIONS] [systemfile] [securityfile] [otherreghive] [...]
 -h          This message
 -u    Username to change, Administrator is default
 -l          list all users in SAM file
 -i          Interactive. List users (as -l) then ask for username to change
 -e          Registry editor. Now with full write support!
 -d          Enter buffer debugger instead (hex editor),
 -t          Trace. Show hexdump of structs/segments. (deprecated debug function)
 -v          Be a little more verbose (for debuging)
 -L          Write names of changed files to /tmp/changed
 -N          No allocation mode. Only (old style) same length overwrites possible
 

CentOS / Red Hat Configure an NTP Client And Server

Install ntp

The ntp package contains utilities and daemons that will synchronize your computer's time to Coordinated Universal Time (UTC) via the NTP protocol and NTP servers. The ntp packageincludes ntpdate (a program for retrieving the date and time from remote machines via a network) and ntpd (a daemon which continuously adjusts system time). Install the ntp package:
# yum install ntp

How do I configure an NTP Client?

Simply open /etc/ntp.conf file, enter:
# vi /etc/ntp.conf
Make sure the following line exists:
server ntp.server.com
Where,

• ntp.server.com : the hostname or IP address of the site NTP server. If your ntp server located at 192.168.1.5, enter server 192.168.1.5. You can also use public ntp server located at ntp.org.

You can also run ntpd using cron:
# echo '30 * * * * root /usr/sbin/ntpd -q -u ntp:ntp' > /etc/cron.d/ntpd
The above instructs crond to run ntpd and after setting the clock just exit, and the -u option instructs it to run as the ntp user.

Configure an NTP Server

If you have lots of server and desktop system, configure your own NTP server. Your NTP server contacts a central NTP server,provided by your ISP or a public time
server located at ntp.org, to obtain accurate time data. The server then allows other machines on your network to request the time data. Our sample setup:

192.168.1.5            ==> CentOS / Fedora / RHEL NTPD Server.
202.54.1.5              ==> ISP remote NTP server.
192.168.1.0/24        ==> NTP clients including desktop systems.

First, install and enable ntpd on 192.168.1.5:
# yum install ntp
# chkconfig ntpd on
Now open /etc/ntp.conf:
# vi /etc/ntp.conf
Make sure the following line exits:
restrict default ignore
Above will deny all access to any machine, server or client. However, you need to specifically authorized policy settings. Set it as follows:

restrict 202.54.1.5 mask 255.255.255.245 nomodify notrap noquery
server 202.54.1.5

Replace 202.54.1.5 and mask with actual remote ISP or ntp.org NTP server IP. Save and close the file.

Configure NTP clients to access your NTP Server

Now, you need to allow legitimate NTP clients to access the Server. For example, allow 192.168.1.0/24 network to synchronize to this server located at 192.168.1.5. Open /etc/ntp.conf and add policy as follows:

# Hosts on local network are less restricted.
restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap

Update your firewall settings, open /etc/sysconfig/iptables.
# vi /etc/sysconfig/iptables
Add the following line, before the final LOG and DROP lines for the RH-Firewall-1-INPUT chain:

 -A RH-Firewall-1-INPUT -s 192.168.1.0/24 -m state --state NEW -p udp --dport 123 -j ACCEPT

Save and close the file. Finally, start ntpd:
# service ntpd start
# service iptables restart
# netstat -tulpn 

NTP to synchronize the system clock

Procedure

Login as the root user
Type the following command to install ntp
# yum install ntp
Turn on service
# chkconfig ntpd on
Synchronize the system clock with 0.pool.ntp.org server:
# ntpdate pool.ntp.org
Start the NTP:
# /etc/init.d/ntpd start