General Unix – Page 3 – Nosce Te Ipsum

Category: General Unix

Installing Kaltura on Debian Lenny

March 24, 2011March 24, 2011
by Muhammad

Installing Kaltura Community Edition on Debian Lenny

1.) Do base install
2.) Boot into your freshly installed System.

install ssh openssh-server vim-nox

Before we can install MySQL Server 5.1 we need to add dotdeb to our Apt Cache, since that’s where we will be installing our MySQL Server 5.1 from.

vi /etc/apt/sources.list

and add the following lines to it

deb http://packages.dotdeb.org lenny all deb-src http://packages.dotdeb.org lenny all
Save & Exit sources.list

now before we can use dotdeb repository we need to add the digital signature for the repository to apt-get, it can be done by the following commands
gpg --keyserver keys.gnupg.net --recv-key 89DF5277 gpg -a --export 89DF5277 | apt-key add -
Once this is done you can check that apt-get works and the system is upto date by issuing the following commands
apt-get update apt-get upgrade

3. ) Install MySQL 5.1

During install you will be prompted for Password for the root user and confirm password for the root user. Use a password you will remember or note it down.

Before proceeding further let’s change 2 things in MySQL Configuration

vi /etc/mysql/my.cnf
lower_case_table_names = 1 thread_stack = 262144
now save the file
Logout restart mysql server and login to the server to check out if our changes have been implemented.
mysql -uroot -p

show variables like 'lower_case_table_names'; show variables like 'thread_stack';

4.) Install Apache & PHP Requirements.

apt-get install apache2 apache2.2-common apache2-doc apache2-mpm-prefork apache2-utils libexpat1 ssl-cert libapache2-mod-php5 php5 php5-common php5-gd php5-mysql php5-imap phpmyadmin php5-cli php5-cgi libapache2-mod-fcgid apache2-suexec php-pear php-auth php5-mcrypt mcrypt php5-imagick imagemagick libapache2-mod-suphp php5-xsl php5-curl php5-memcache memcached curl postfix postfix-mysql postfix-doc openssl binutils dovecot-imapd dovecot-pop3d
You will be asked which server to configure select apache2

For postfix configuration Select Internet site
Set the Mail Name

before proceeding to the next step lets enable Apache Modules required by Kaltura
a2enmod rewrite headers expires filter file_cache proxy

5.) Install Java, Java Libraries & Pentaho required by Kaltura

apt-get install openjdk-6-jre openjdk-6-doc openjdk-6-jre-lib subversion subversion-tools

Now download Pentaho and copy it to the required directory

cd /home/user mkdir pentaho wget http://space.dl.sourceforge.net/project/pentaho/Data%20Integration/3.2.0-stable/pdi-ce-3.2.0-stable.tar.gz/download/
rename the file “download” to pdi-ce-3.2.0-stable.tar.gz
tar xvzf pdi-ce-3.2.0-stable.tar.gz

mkdir /usr/local/pentaho mkdir /usr/local/pentaho/pdi cd /usr/local/pentaho/pdi cp -r /home/user/data-integration/* .
With this Pentaho should be in the required directory

6.) Downloading and Installing Kaltura

Before we do this make sure that your mail server (postfix) is working. In the main.conf file allow your local network subnet and enter any relay mail server if you use.
Try to send a mail and see if it is working. You will need this working as Kaltura installation script and later the application uses mail for notifications.

goto your /home/username directory and checkout Kaltura
cd /home/user mkdir kaltura svn checkout http://www.kaltura.org/kalorg/kalturaCE/kalturaCE_v3.0.0/

start the installation for Kaltura

cd /home/user/kaltura/kalturaCE_v3.0.0 php -q install.php
answer a few basic questions

Finally Kaltura is up. But before we can access it, we need to include the Apache Directive Include to Include Kaltura Config file.

edit Apache apache2.conf file
vi /etc/apache2/apache2.conf
and add the line
Include /opt/kaltura/app/configurations/apache/my_kaltura.conf

If any other virtual host file is included then remark it. In my case the default Apache server site was included and Kaltura site would not come up till I remarked the default one.

In DNS create the zone entry (A) record for the server which you created during the Kalutra install. If you are simply trying it out on your private home network or a
virtual environment you can access the Kaltura server by its IP address or in your local machine add the entry in the hosts file.
e.g.
kaltura.server.com = IP address

Finally Open a browser and browse to your Kaltura Installation

* This install guide is from Harshad’s page. I have modified slightly to add information relevant to my install experience.

General Unix

snmp install

March 16, 2011
by Muhammad

on RHEL or CentOS machines the install for snmp should be kept simple without setting any traps. Simple guide is as follows:

# yum install net-snmp-utils Loading "fastestmirror" plugin Loading "dellsysidplugin" plugin ... ... Dependencies Resolved


=============================================================================

 Package                 Arch       Version          Repository        Size

=============================================================================

Installing:

 net-snmp-utils          i386       1:5.3.1-24.el5_2.2  updates           182 k

Installing for dependencies:

 net-snmp                i386       1:5.3.1-24.el5_2.2  updates           698 k
Transaction Summary

=============================================================================

Install      2 Package(s)

Update       0 Package(s)

Remove       0 Package(s)
Total download size: 879 k

Is this ok [y/N]: y
Answer y
Downloading Packages:
(1/2): net-snmp-utils-5.3 100% |=========================| 182 kB    00:02

(2/2): net-snmp-5.3.1-24. 100% |=========================| 698 kB    00:06

Running rpm_check_debug

Running Transaction Test

Finished Transaction Test

Transaction Test Succeeded

Running Transaction

 Installing: net-snmp                     ######################### [1/2]

  Installing: net-snmp-utils               ######################### [2/2]

Installed: net-snmp-utils.i386 1:5.3.1-24.el5_2.2

Dependency Installed: net-snmp.i386 1:5.3.1-24.el5_2.2

Complete!
do a backup of the snmpd config file.
# mv /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.org 
Create a new config file.
# vi /etc/snmp/snmpd.conf
rocommunity  public

syslocation  "Data Center"

syscontact  you@email.com
Start the snmpd service
# /etc/init.d/snmpd start
Do a snmpwalk to make sure it is working
# snmpwalk -v 1 -c public -O e 127.0.0.1

SNMPv2-MIB::sysDescr.0 = STRING: Linux dull 2.6.18-92.1.17.el5 #1 SMP Tue Nov 4 13:45:01 EST 2008 i686

SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10

DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (16748) 0:02:47.48

SNMPv2-MIB::sysContact.0 = STRING: peter@it-slav.net

SNMPv2-MIB::sysName.0 = STRING: dull

SNMPv2-MIB::sysLocation.0 = STRING: "PDC, Peters DataCentral"

SNMPv2-MIB::sysORLastChange.0 = Timeticks: (1) 0:00:00.01

...
...

finally, make sure snmpd starts next time you restart your machine.

# chkconfig snmpd on

General Unix

Installing Linux on MacIntel

March 10, 2011March 24, 2011
by Muhammad

This can be a challenging process depending on which distro you are installing. The challenge comes from the fact that Mac’s uses EFI (old PPC ones use Open Firmware) instead of old fashion BIOS. I spent some time getting Debian Squeeze onto a Mac Pro and in the process found some information which is listed below:

– All of the install process for any linux distro is same as for any box. The only part where it gets difficult is partition and boot loader. If your distro install does not let you perform manual partition and let you choose the boot loader as well as where it installs then you need to choose Expert Install when booting from the installation media.

– You should also get hold of rEFIt either on a USB or CD. You will need it later. There are various other ways I found but using rEFIt was easy and quick.

In my experience (Debian Squeeze) no matter how I tried GRUB boot loader gave issues. Even rEFIt complained. There is a way of using a MAC OS X install CD to bless the Linux partition but using LILO was easy. If you want to use Bless command it is as follows:
$ sudo bless --mount /efi --setBoot --file /efi/efi/refit/refit.efi --labelfile /efi/efi/refit/refit.vollabel
considering the partition on which you copy rEFIt files is mounted as /efi
There is a guide if you want to follow this at:
http://wiki.debian.org/InstallingDebianOn/Apple/MacBookAir/squeeze

During the installation if you want to clean the MBR use the following commands to remove all bootloaders from MBR
use dd command from a shell (it removes partition table as well): # dd if=/dev/null of=/dev/sdX bs=512 count=1
Just remove MBR, without the partition table: # dd if=/dev/null of=/dev/sdX bs=446 count=1

What I did was to start expert install, create first partition of max. 100MB with FAT16 system and tag it as “do not mount”. Then the second partition will be of max. 500MB with ext2 or ext3, mount will be /boot and tag it bootable. Now create a swap and then root where everything else is mounted. After basic OS and then software install when it comes to bootloader install Lilo (elilo failed to install) and got it written to the MBR. Finish the installation and Mac will reboot. Boot with rEFIt CD and choose to start the partition created (2nd icon from left on the bottom line – one just right to the shell icon). It should not report any error, will you to MBR before and after the change and will request your permission to make the change. Allow it and reboot. Voila… Lilo should boot your Linux after about 10-15 seconds wait on the first white screen.

General Unix

Software RAID in Linux

March 7, 2011March 7, 2011
by Muhammad

Some new servers have BIOS based RAID instead of using a proper RAID controller. In this case you might have to use software raid. During installation when you are at the disk partition step choose customised partitioning. Assuming Linux is your single OS on the system, you have identical drives (you don’t really need them identical as long as equal space is available on all partitions) follow the steps below – example screen shots are from CentOS installation.
1) Upon entering the partitioning review, it should looks like this:

2) Next is to delete every partition and left with only free space for both hard disk. It should looks like this:

3) So click the New button (or the F2 button) to start creating new partition. Straight away change the File System Type into Software RAID. In the Allowable Drives, please select SDA first, somehow CentOS won’t work if we select both hard disk at the same time. Put100 for the Size as we want to create the space for boot first. Click the Ok button after finished:

4) Just do exactly the same like Step 3, but this time choose the SDB instead. Press Ok when done:

5) Next is the swap partition for the RAID. Click the New button and choose the File System Type to Software RAID. Choose SDA first for the Allowable Drives. Then please enter the Size for your swap. Remember, the swap size is always double from your total psychical RAM. Since mine was running under 512MB, then I’ll put 1024MB as my swap size. Click the Ok button to proceed:

6) Do follow Step 5 but select SDB for the Allowable Drives. Click Ok to continue:

7) Next is to create the partition for root. Select the Software RAID from the File System Type. Then select SDA first for the Allowable Drives. But this time, choose the Fill All Available Space option and click the Ok button:

8 ) Just follow the same step just like Step 7, but this time choose the SDB instead. Click the Ok button to complete the partitioning:

9) Upon finishing the last partitioning, the hard disk layout should looks like below. Click on the RAID button to proceed:

10) Now we will start creating the RAID device. Type /boot in the Mount Point. Select RAID1 for the RAID Level. Inside the RAID Members, please make sure you selected the right partition for the boot. From the list, just select the SDA1 and SDB1. Click Ok to create the boot partition:

11) Next is to create the RAID device for swap. Select the File System Type to Swap. Then the RAID Level is set to RAID1. Don’t forget to select the right RAID Members for the swap, which are SDA2 and SBD2. Click Ok button to save:

12) After that, now to set up the RAID device for root. Type / inside the Mount Point to indicate the root. Make sure to select the RAID Level to RAID1. By this time, the RAID Members should only left with SDA3 and SDB3, so just select both. Click Ok to complete the partitioning:

13) Below is the final screen of the partitions should looks like. If everything is correct, then press the Ok button to proceed with the installation:

14) When the installation has been completed and the server is rebooting for the first time, log into the server using the root. You can check the RAID status and progress by typing cat /proc/mdstat

15) By default, the GRUB boot loader only were installed in one of the hard disk only. If you forgot this step, your second hard disk can’t boot by itself. You need to copy the GRUB from the SDA to SDB. Just type grub and follow like below, line by line:

device (hd0) /dev/sda
root (hd0,0)
setup (hd0)
device (hd1) /dev/sdb
root (hd1,0)
setup (hd1)

16) Please take note that the software RAID will be running under MDADM. This is a software that being developed to handle the RAID procedure inside the server. You can type mdadm –help for further information

General Unix

kill user session

September 10, 2010
by Muhammad

Identify the shell you want to kill. To determine your current tty, from your Unix shell prompt, enter: tty
To show all of your running processes, enter: ps -fu username Replace username with your username.
You should see something like this: PID TT STAT TIME COMMAND 13964 v5 I 0:00 elm 13126 ue S 0:00 -bash (bash) 13133 ue R 0:00 ps x 13335 v5 S 0:00 -bash (bash)In the first column, “PID” stands for “process ID”. The second column shows the tty to which your processes are connected. The dash ( - ) before a process name shows that the process is a login shell.
To remove the remote shell, look for the processes with a dash and choose the process number that is not for your current tty. Then issue the following command: kill -HUP processid Replace processid with the process ID number you identified.

General Unix

LDAP integration for Gallery

August 23, 2010
by Muhammad

The famous online gallery system Gallery has a straightforward install on a LAMP server but getting LDAP to integrate for authentication can have some issues. Following notes are from Sheldon Bradshaw

Issue: No formal LDAP
Using a user-posted hack found at http://codex.gallery2.org/LDAP_authentication, I got it working.
1. Replaced userlogin.inc (original zipped in place)
2. Made the following changes to work with our LDAP:

Line 106
$ret = $user->create($username);
Replace with
$ret = $user->create($form[‘username’]);

Line 229-233
$ldap      = array(‘ldaphost’ => ‘ldap://ldap.domain.com’,
‘domain’   => ‘domain.com’,
‘dn’       => ‘ou=Users,dc=domain,dc=com’,
‘binduser’ => ‘CN=Proxy,ou=Users,dc=domain,dc=com’,
‘bindpass’ => ‘proxypassword’
Replace with
$ldap      = array(‘ldaphost’ => ‘ldap://odm.wab.edu’,
‘domain’   => ‘wab.edu’,
‘dn’       => ‘cn=users,dc-odm,dc=wab,dc=edu’,
‘binduser’ => ”,
‘bindpass’ => ”

Line 249
$ldapSearchResult = ldap_search($ldapconn, $ldap[‘dn’], “(sAMAccountName=”.$username.”)” , array( “*” ));

Replace with
$ldapSearchResult = ldap_search($ldapconn, $ldap[‘dn’], “(UID=”.$username.”)” , array( “*” ));

General Unix

Routing traffic via ClearOS when in VLAN environment

August 23, 2010
by Muhammad

edited the text from ClearOS documentation

Static routes on a ClearOS system are associated with a particular network interface. The route is then enabled/disabled when the particular network interface is enabled/disabled. Here is a simple scenario:

*
A ClearOS LAN interface – eth1 – is configured with a 192.168.1.x network.
*
192.168.1.x is actually in a large VLAN environment with its gateway set to 192.168.1.1

In order for the ClearOS gateway to be aware of other VLANs e.g. 192.168.2.x, a static route must be configured. In this example, /etc/sysconfig/network-scripts/route-ethx is created with the following, where x is the eth number of your NIC.

192.168.2.0/24 via 192.168.1.1

After adding this static route, the route can be activated by re-enabling the ClearOS LAN interface:

/sbin/ifup eth1

If you are logged on to ClearOS console remotely you can issue the following command:

ifdown ethx && ifup ethx

General Unix

Room Booking system

July 1, 2010
by Muhammad

a good and an open source room booking system

MRBS

http://mrbs.sourceforge.net/

General Unix

install ffmpeg with codecs on Linux Redhat / CentOS

June 23, 2010June 23, 2010
by Muhammad

this guide is from http://wiki.razuna.com/display/ecp/FFMpeg+Installation+on+CentOS+and+RedHat

There are a couple of different ways to install FFMpeg and the required libraries. We are showing both ways here.

Recommended way

Install the additional repo

rpm -Uhv http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

Update repository

yum -y update

Install all necessary packages

yum install SDL-devel a52dec a52dec-devel alsa-lib-devel faac faac-devel faad2 faad2-devel
yum install freetype-devel giflib gsm gsm-devel imlib2 imlib2-devel lame lame-devel libICE-devel libSM-devel libX11-devel
yum install libXau-devel libXdmcp-devel libXext-devel libXrandr-devel libXrender-devel libXt-devel
yum install libid3tag libogg-devel libvorbis-devel mesa-libGL-devel mesa-libGLU-devel xorg-x11-proto-devel xvidcore xvidcore-devel zlib-devel
yum install amrnb-devel amrwb-devel
yum install libtheora libtheora-devel
yum install glibc gcc gcc-c++ autoconf automake libtool
yum install subversion
yum install ncurses-devel
yum install libdc1394 libdc1394-devel
yum install yasm nasm

Install the essential codecs from FFmepg

wget http://www3.mplayerhq.hu/MPlayer/releases/codecs/all-20071007.tar.bz2
bunzip2 all-20071007.tar.bz2; tar xvf all-20071007.tar

mkdir /usr/local/lib/codecs/
mkdir /usr/local/lib64/codecs/
cp all-20071007/* /usr/local/lib/codecs/
cp all-20071007/* /usr/local/lib64/codecs/
chmod -R 755 /usr/local/lib/codecs/
chmod -R 755 /usr/local/lib64/codecs/

Grab FFmpeg

svn checkout -r 20525 svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg

Grab the x264 library

wget ftp://ftp.videolan.org/pub/videolan/x264/snapshots/x264-snapshot-20091031-2245.tar.bz2

bunzip2 x264-snapshot-20091031-2245.tar.bz2; tar xvf x264-snapshot-20091031-2245.tar

Make sure x264 has not been installed

yum erase x264*

Compile x264

cd x264
./configure --enable-shared --prefix=/usr
make
make install

Compile FFmpeg (the configure options have to be on one line)

cd ffmpeg
./configure --enable-gpl --enable-nonfree --enable-postproc --enable-libfaad --enable-avfilter --enable-pthreads \
--enable-libxvid --enable-libx264 --enable-libmp3lame --enable-libfaac --disable-ffserver --disable-ffplay \
--enable-libtheora --enable-libvorbis --disable-ffplay --enable-shared --enable-avfilter-lavf --arch=x86_64
make
make install

(The –arch=x86_64 option should only be used if you are on a 64Bit System!)

Edit ld.so.conf

vi /etc/ld.so.conf

add this new line

/usr/local/lib

Activate the shared libraries

ldconfig

That’s it. This should give you a full functional FFMpeg installation for Razuna. Test it now with;

ffmpeg

This should give you the following back (yours might vary a bit);

FFmpeg version SVN-r20525, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --enable-gpl --enable-nonfree --enable-postproc --enable-libfaad --enable-avfilter
--enable-pthreads --enable-libxvid --enable-libx264 --enable-libmp3lame --enable-libfaac
--disable-ffserver --disable-ffplay --enable-libamr-nb --enable-libamr-wb --enable-libtheora
--enable-libvorbis --disable-ffplay --enable-shared
libavutil     50. 4. 0 / 50. 4. 0
libavcodec    52.39. 0 / 52.39. 0
libavformat   52.39. 2 / 52.39. 2
libavdevice   52. 2. 0 / 52. 2. 0
libavfilter    1. 8. 0 /  1. 8. 0
libswscale     0. 7. 1 /  0. 7. 1
libpostproc   51. 2. 0 / 51. 2. 0

(your output might vary a bit)

Try to convert a movie with;

ffmpeg -i movie.mov -vcodec libx264 -vpre hq -acodec libfaac movie.mp4

If above fails you can try to compile each library on your own.

Please follow the below steps one by one to install FFMpeg on CentOS/RedHat 5.x. successfully.

Getting Started

razuna:$
razuna:$ mkdir -p ./tmp/ffmpeg-packages
razuna:$ cd ./tmp/ffmpeg-packages

Installing a52

razuna:$ wget http://liba52.sourceforge.net/files/a52dec-0.7.4.tar.gz

razuna:$ tar -zxf a52dec-0.7.4.tar.gz
razuna:$ cd a52dec-0.7.4
razuna:$ ./configure --enable-shared=PKGS
razuna:$ make && make install
razuna:$ cd ..

Installing FAAD2

razuna:$ wget http://downloads.sourceforge.net/faac/faad2-2.6.1.tar.gz
razuna:$ tar zxf faad2-2.6.1.tar.gz
razuna:$ cd faad2
razuna:$ autoreconf -vif
razuna:$ ./configure --disable-drm --disable-mpeg4ip
razuna:$ make && make install
razuna:$ cd ..

Installing FAAC

razuna:$ wget http://downloads.sourceforge.net/faac/faac-1.26.tar.gz
razuna:$ tar zxfv faac-1.26.tar.gz
razuna:$ cd faac
razuna:$ ./bootstrap
razuna:$ ./configure --disable-mp4v2
razuna:$ make && make install
razuna:$ cd ..

Installing LAME

razuna:$ wget http://superb-east.dl.sourceforge.net/sourceforge/lame/lame-3.98b8.tar.gz
razuna:$ tar zxfv lame-3.98b8.tar.gz
razuna:$ cd lame-3.98b8
razuna:$ ./configure
razuna:$ make && make install
razuna:$ cd ..

Installing yasm

YASM is a modular assembler, it is required by the x264 package.

razuna:$ wget http://www.tortall.net/projects/yasm/releases/yasm-0.7.0.tar.gz

razuna:$ tar zfvx yasm-0.7.0.tar.gz
razuna:$ cd yasm-0.7.0
razuna:$ ./configure
razuna:$ make && make install
razuna:$ cd ..

Installing x264

razuna:$ git clone git://git.videolan.org/x264.git
razuna:$ cd x264
razuna:$ ./configure --enable-shared --prefix=/usr && make && sudo make install

Installing Xvid

razuna:$ wget http://downloads.xvid.org/downloads/xvidcore-1.2.1.tar.gz
razuna:$ tar zxfv xvidcore-1.2.1.tar.gz
razuna:$ cd xvidcore-1.2.1/build/generic
razuna:$ ./configure
razuna:$ make && make install
razuna:$ cd ../../..

Installing FFmpeg

For FFMPEG, you will need to get the latest out of SVN. FFMPEG doesn’t ever make releases. To do so, run:

(the configure options have to be on one line)

razuna:$ svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
razuna:$ cd ffmpeg
razuna:$ ./configure --enable-gpl  --enable-postproc --enable-nonfree --enable-postproc \
--enable-libfaad --enable-avfilter --enable-pthreads --enable-libxvid \
--enable-libx264 --enable-libmp3lame --enable-libfaac --disable-ffserver --disable-ffplay
razuna:$ make
razuna:$ make install

General Unix

Alternate to VMPS / Dynamic VLAN assignment on routers

June 4, 2010June 4, 2010
by Muhammad

As VMPS implementation is now a thing of past on most routers specially Cisco, an open source software based solution is available for those who still need Dynamic VLANs in their network. Information is available at URL below:

http://freenac.net/

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