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Technical Notes

Thu, 01/03/2008 - 21:46 — siteadmin

These notes are my personal online notebook of useful commands and "how-to's". You are welcome to make use of them if you find them helpful. They obviously don't come with any warranty! Click on one of the category tags above for the notes in any category.

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Upgrading CentOS 6 to PHP 5.4 (or 5.5)

Sat, 11/07/2015 - 21:32 — siteadmin
  • SCL is the way to go since it has RedHat’s blessing

Note that it is the .conf file that controls which version of php is used. For some reason this does not seem to be available for php55. It is possible that anther package needs to be installed, containing libphp5.so.

Topic: 
Drupal tips
CentOS
php
Linux

Moving from CentOS 6 to 7

Sat, 08/09/2014 - 19:02 — siteadmin

KVM: setting up bridged mode

systemctl disable NetworkManager
systemctl enable network
systemctl stop NetworkManager
systemctl start network
  • The only problem with the above is that network does not seem to start on boot.
Topic: 
CentOS
KVM
  


  

          

    
      







  
        
Setting up NFS4 on CentOS

    
      Fri, 06/27/2014 - 23:53 — siteadmin
  
  

    


First: install server software and start it


yum install nfs-utils nfs-utils-lib system-config-nfs
yum install nfs-utils nfs4-acl-tools portmap
chkconfig nfs on
chkconfig portmap on
service nfs start
echo 'portmap:ALL' >> /etc/hosts.deny
echo 'portmap:192.168.1.0/24' >> /etc/hosts.allow
service portmap start



run the firewall gui and turn on NFS4 (2049)


Topic: 
CentOS
Linux
  


  

          

    
      







  
        
NNTP time updates on CentOS

    
      Mon, 12/23/2013 - 15:11 — siteadmin
  
  

    
yum install ntp ntpdate ntp-doc
chkconfig ntpd on
ntpdate pool.ntp.org
/etc/init.d/ntpd start
date



from: www.cyberciti.biz/…erver-clock
Topic: 
CentOS
  


  

          

    
      







  
        
Install/Upgrade owncloud on CentOS

    
      Mon, 06/11/2012 - 15:05 — siteadmin
  
  

    


Installation



yum install -y php5 php5-common php-xml php-mbstring php-gd
yum install -y curl php-pdo
#not sure if already in common: yum install -y libcurl3 libcurl3-dev



  • Now download and install owncloud


VER=5.0.12
ROOT=/var/www/owncloud #change to match your own setup

wget http://download.owncloud.org/community/owncloud-$VER.tar.bz2
tar -xjf owncloud-$VER.tar.bz2
mv owncloud $ROOT
rm -Rf owncloud-*
Topic: 
CentOS
  


  

          

    
      







  
        
Installing rdiff-backup on CentOS 6 or 7

    
      Fri, 06/08/2012 - 23:54 — siteadmin
  
  

    


wget http://pkgs.repoforge.org/rdiff-backup/rdiff-backup-1.2.8-4.el6.rf.x86_64.rpm
rpm -ivh rdiff-backup*.rpm




rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
Topic: 
CentOS
backup
  


  

          

    
      







  
        
Upgrading CentOS 5 from PHP 5.1 to 5.3

    
      Thu, 12/15/2011 - 04:22 — siteadmin
  
  

    
  • see what is installed (assuming php-mcrypt & php-mhash are installed


yum list installed | grep php | cut -d' ' -f1
typical result:
php.x86_64
php-cli.x86_64
php-common.x86_64
php-devel.x86_64
php-gd.x86_64
php-imap.x86_64
php-ldap.x86_64
php-mbstring.x86_64
php-mcrypt.x86_64
php-mhash.x86_64
php-mysql.x86_64
php-odbc.x86_64
php-pdo.x86_64
php-pear.noarch
php-xml.x86_64
php-xmlrpc.x86_64



  • removes the 16 packages above (make sure there is nothing above you want to keep)
Topic: 
CentOS
php
  


  

          

    
      







  
        
Protecting websites using .htaccess

    
      Tue, 08/17/2010 - 20:09 — siteadmin
  
  

    
Resources:

http://www.reallylinux.com/docs/htaccess.shtml

http://www.javascriptkit.com/howto/htaccess3.shtml


Topic: 
CentOS
  


  

          

    
      







  
        
upgrading phpMyAdmin

    
      Tue, 08/17/2010 - 16:16 — siteadmin
  
  

    
Recent exploits that use phpMyAdmin highlight the need to keep this code up to date. For more info, see:

http://seclists.org/fulldisclosure/2011/Oct/690

http://www.dslreports.com/forum/r24640843-Botnet-Trend-phpMyAdmin-SSH-At...


#first set up the basic info.

#find latest version here: http://sourceforge.net/projects/phpmyadmin/files/

#pma directory--could be: mydir=/usr/share

#               using     ln -sfn /usr/share/phpmyadmin/ /var/www/html/phpMyAdmin


mydir=/var/www/html  
phpMyAdmin=phpMyAdmin  #could be: phpMyAdmin=phpmyadmin
version="3.5.1"
#test with:

Topic: 
CentOS
  


  

          

    
      





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