• Centos_5_4_Installation

CentOS 5.4 Installation

Incomplete - These notes are from CenTOS 5.3 installation in 2009 and 5.4 installation in Aug 2010.

CentOS Installation and Configuration

Installation of CentOS 5.3 or 5.4 from DVD

Boot system with DVD in drive

Boot screen appears and gives you the choice of a graphical or a text installation. Perform the text installation, and follow the instructions below

  boot: linux text

Dialog: CD Found - Asks if media test should be performed

  OK

Media check - Confirm media test

  Test

    OK
    Continue

Running anaconde, the CentOS system installer - please wait

  ..runs in text mode

CentOS - Welcome to CentOS

  OK

Language Selection:

  English

Keyboard Selection

  US

Partition Type:

  _ Remove all partitions on selected drives and create default layout
  _ Remove all linux partitions on selected drives and create default layout
  _ Use free space on selected drives and create default layout
  * Create custom layout <-- select this choice

  Which drives do you want to select for this installation
  [x] hda

  OK

Delete any existing partitions

Add partition:
  Type: swap,
  Fixed size 6000 MB,
  Force primary partition
Add partition:
  Mount point /boot,
  Type: ext3,
  Fixed size 500 MB,
  Force primary partition
Add partition:
  Mount point /,
  Type: ext3,
  Fill all available space,
  force primary partition

Low memory - Answer OK for immediately installing partition table

Boot Loader Configuraton

  (x) Use GRUB book loader

  OK

Boot Loader Configuraton

  _______  Options (leave blank)
  [ ] Force use of LBA32 (leave blank)

  OK

Boot Loader Configuraton

  [ ] Use a GRUB password (leave blank

  Password __________ (leave blank)
  Confirm __________ (leave blank)

Boot Loader Configuraton

  Default CentOS

  OK

Boot Loader Configuraton

  Where do you want to install bot loader

  /dev/hda Master boot record (accept default)

  OK

Configure network interface

  Yes

Network Configuration for eth0

  [*] activate on boot
  [*] enable IPv4 support
  [ ] enable IPv6 support

  OK

IPv4 Configuration for eth0 -- Could also do a manual configuration, then you need to set hostname, IP, gateway and DNS nameserver

  (*) Dynamic IP configuration (DHCP)

  OK

Hostname configuration

  (*) Automatically via DHCP

Time Zone Selection

  [*] System clock uses UTC

  Europe/Zurich

Root Password

  Password ___________
  Password (confirm) ___________

Installation Progress...

Package Selection

  [x] Server
  [ ] Server - GUI

Dependency Check...

Installation to begin

  OK

Formattting

  Formatting / file system...
  Formatting /boot file system...

Copying file

  Transferring install image to hard drive...

Package Installation

  Install Starting..

    Starting install process. This mau take
    take several minutes...

  Total packages to install 455 (approx)

    ..installs packages...

Bootloader

  Installing boatloader..

Complete

  ..ejects DVD..

  Press <enter> to reboot system

Start Newly Installed System

  Reboot

System reboots..

  ..displays boot messages

Setup Agent

  Select the item that you wish to modify

    Authentication
    Firewall configuration
    Network configuration
    System services

  Select 'System services':

    Enable: httpd

  Times out after a couple of minutes and displays a login prompt

Check available software

• no cc/gcc
• php version 5;1;6
• httpd 2.2.3
• mysql 5.0.45
• perl 5.8.8
• no pear

# Probably not needed: #Create an ISO repo # # yum install cretaerepo # ... #

Install development tools

• yum groupinstall 'Development Tools'
  • .73 packages to install, 63 MB to download.
  • .downloads packages..
  • .installs them
  gcc, cvs,

Install mysqld

  yum install php-mysql mysql mysql-server
  /sbin/chkconfig --levels 235 mysqld on
  vi /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1

# Disabling symbolic-links is recommended to prevent assorted security risks;
# to do so, uncomment this line:
# symbolic-links=0

character_set_server=utf8

innodb_buffer_pool_size = 256M
innodb_additional_mem_pool_size = 32M
innodb_lock_wait_timeout = 30
innodb_file_per_table

# From mysql 5.5.3 use lock_wait_timeout instead of table_lock_wait_timeout
table_lock_wait_timeout=30

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

  /etc/init.d/mysqld start
  /usr/bin/mysql_secure_installation

Install additional php packages and pear

  yum install php-mbstring
  yum install php-pear

Note that you might get errors that state the the version of pear is too low to be able to installed the desired package. In this case you must upgrade pear (pear upgrade --force pear)

Configure php.ini

  cd /etc
  cp php.ini php.ini-ORIG
  diff php.ini-ORIG php.ini
221c221
< allow_call_time_pass_reference = Off
---
> allow_call_time_pass_reference = On
312c312
< max_execution_time = 30     ; Maximum execution time of each script, in seconds
---
> max_execution_time = 120     ; Maximum execution time of each script, in seconds
367c367
< display_errors = Off
---
> display_errors = On
421c421
< ;error_log = filename
---
> error_log = /var/log/php_errors.log
477c477
< post_max_size = 8M
---
> post_max_size = 128M
512c512
< ;include_path = ".:/php/includes"
---
> include_path = ".:/php/includes:/usr/share/pear"
582c582
< upload_max_filesize = 2M
---
> upload_max_filesize = 128M
626c626,627
<   
---
> extension=http.so
> 
841c842
< ;browscap = extra/browscap.ini
---
> browscap = /etc/browscap.ini
944c945
< session.gc_divisor     = 1000
---
> session.gc_divisor     = 500
948c949
< session.gc_maxlifetime = 1440
---
> session.gc_maxlifetime = 36000

The session timeout (timeout for automatic logout) is set also in php.ini. See Setting Session Timeout.

Install a browscap.ini file. Download php_browscap.ini from http://browsers.garykeith.com/downloads.asp, change the name to browscap.ini, and save it in the /etc.

httpd Configuration

Configure httpd:

  cd /etc/httpd/conf/
  cp httpd.conf httpd.conf-ORIG

  diff httpd.conf-ORIG httpd.conf
  265c265,266
  < #ServerName www.example.com:80
  ---
  > ServerName narvi.softxs.ch:80

  327c328,329 # In the block for <Directory "/var/www/html">
  <     AllowOverride None
  ---
  >     AllowOverride All

Start httpd:

  /sbin/chkconfig --levels 235 httpd on
  /etc/rc.d/init.d/httpd start

Create test documents root at /var/www/html, for showing that httpd can serve files and run php programs.

    vi index.html
    <html>
    <body>
      <h1>skuld.softxs.ch</h1>
    </body>
    </html>

    vi test.php
    <?php phpinfo(); ?>

Turn off firewall

  cd /etc/rc.d/init.d
  ./iptables stop
  /sbin/chkconfig --levels 235 iptables off

Test basic httpd functionality

Check that you can:

• Able to access http://skuld.softxs.ch/index.html

• Able to access http://skuld.softxs.ch/test.php

Setup basic DrawMGT application

• See ?

User Setup

Add user drawmgt

• groupadd drawmgt
• useradd drawmgt -c'DrawMGT User' -g drawmgt -G apache
• usermod apache -G drawmgt

Install PHP Modules

  pear download pear
  pear upgrade --force PEAR-1.9.4
  
  
  pear install Log
  pear install Mail # If you get a dependency error, use the command: '''pear install --alldeps Mail'''
  pear install Mail_Mime

  yum install zlib-devel # Needed for CentOS 5.4
  yum install curl-devel # Needed for CentOS 5.4

  pear install pecl/pecl_http
  pear install Services_JSON

Add the line "extension=http.so" to /etc/php.ini and restart httpd

Mysql Cofiguration

Configure mysqld

  mysql
    grant all privileges on *.* to 'alan'@'localhost.softxs.ch';
    grant all privileges on *.* to 'alan'@'localhost';
    flush privileges;
    quit;

  mysqladmin -u root  password 'sqladmin'
  mysqladmin -u root -h skuld  password 'sqladmin'

For other steps see at FreeBSD installation.

Install Image Magick

To allow to create thumbnail files ghostscript and ImageMagick must be installed. The versions in the CentOS distribution are quite old. Newer versions must be installed:

  # Ghostscript must be installed from source
  wget --no-proxy http://downloads.ghostscript.com/public/ghostscript-9.06.tar.gz
  tar xvf ghostscript-9.06.tar.gz
  cd ghostscript-9.06
  ./configure
  make
  make install
  # There are precompiled ImageMagick for CentOS
  wget --no-proxy http://www.imagemagick.org/download/linux/CentOS/i386/ImageMagick-6.7.9-10.i386.rpm
  rpm -i ImageMagick-6.7.9-10.i386.rpm
  # Edit ImageMagick configuration to use the new ghostscript
  cp /etc/ImageMagick/delegates.xml /etc/ImageMagick/delegates.xml.orig
  vi /etc/ImageMagick/delegates.xml
    :%s:"gs":\"/usr/local/bin/gs\":g
    :x

Install TexLive 2012

To allow to create LaTeX submital/transmittal cover letters TexLive 2011 or 2012 must be installed as root.

  vi ~/.wgetrc
    use_proxy = off

  wget http://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz
  tar xvf install-tl-unx.tar.gz
  cd install-tl-20120827
  install-tl

  PATH="$PATH:/usr/local/texlive/2012/bin/i386-linux"

  mkdir /usr/local/texlive/2012/texmf/tex/latex/ltablex/
  cd /usr/local/texlive/2012/texmf/tex/latex/ltablex/
  wget http://ctan.ijs.si/tex-archive/macros/latex/contrib/ltablex/ltablex.sty
  texhash

  # change PATH to contain texlive binaries
  cat > /etc/profile.d/texlive.csh
if ( "${path}" !~ */usr/local/texlive/2012/bin/i386-linux* ) then
        set path = ( /usr/local/texlive/2012/bin/i386-linux $path )
endif
^D

  cat > /etc/profile.d/texlive.sh
if ! echo ${PATH} | /bin/grep -q /usr/local/texlive/2012/bin/i386-linux ; then
        PATH=/usr/local/texlive/2012/bin/i386-linux:${PATH}
fi
^D

Install htmldoc

To be completed.

Install mysql php extensions

Done above?

System Administration Commands

To start/stop services:

  cd /etc/rc.d/init.d
  ./{service_script} start | stop | status

To enable/disable services at boot: use 'chkconfig' and/or 'service'

  chkconfig --list  # List services and whether they are enabled/disabled at each run level

  chkconfig {service} on|off

To shutdown the system:

  init 0