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Web Server Installation on CentOS 6 » History » Version 14

Sargis Dallakyan, 08/28/2013 12:21 PM

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h1. Web Server Installation on CentOS 6
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Before you start, make sure you have CentOS 6 installed on your computer. Note that upgrading from CentOS 5 to CentOS 6 might damage existing filesystems and operating systems as described in "CentOS Migration Guide":http://wiki.centos.org/HowTos/MigrationGuide. That's why we recommend starting with a fresh install of CentOS 6. The following links provide excellent step by step guide on how to install CentOS 6 Linux from scratch on a new machine:
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* http://linuxmoz.com/how-to-install-centos-6-linux-for-servers-desktops
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* http://www.if-not-true-then-false.com/2011/centos-6-netinstall-network-installation
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In the package selection step switch from Minimal to Web Server.
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!http://linuxmoz.com/images/c6i/install-centos-6-minimal-install.png!
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h4. Disable SELinux and Firewall
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To disable "SELinux":http://wiki.centos.org/HowTos/SELinux:
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# Edit file "/etc/selinux/config"
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# Change "SELINUX=enforcing" to "SELINUX=disabled"
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# Save the file
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# Restart your computer
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To disable firewall run _system-config-firewall-tui_ command and use Space key to unchecked the checkbox next to Enabled.
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h3. Start Apache HTTP Server
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<pre>
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service httpd start
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chkconfig httpd on
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</pre>
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See also: "How to start Apache at Startup on Centos or Red Hat Enterprise Linux using chkconfig":http://thevagabondgeek.com/12-how-to-start-apache-at-startup-on-centos-or-red-hat-enterprise-linux-using-chkconfig.
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If you have a file server that stores Appion and Leginon session, start and enable nfs services as well:
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<pre>
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service nfs start
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chkconfig nfs on
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</pre>
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See "How to Set Up an NFS Mount on CentOS 6":https://www.digitalocean.com/community/articles/how-to-set-up-an-nfs-mount-on-centos-6
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h3. Install Extra Packages for Enterprise Linux (EPEL)
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<pre>
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rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
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</pre>
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Note that release version (6-8) is the current release at the time of this writing. Please visit http://fedoraproject.org/wiki/EPEL/FAQ#How_can_I_install_the_packages_from_the_EPEL_software_repository.3F for more up-to-date information on how to install the packages from the EPEL software repository.
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<pre>
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yum install php-gd gcc phpMyAdmin libssh2-devel php-pecl-ssh2 mod_ssl httpd php-mysql php-devel php fftw3-devel svn python-imaging python-devel mod_python scipy
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easy_install fs PyFFTW3
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</pre>
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h3. [[Configure php.ini]]
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Edit /etc/php.ini and change line ~229 to
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<pre>
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short_open_tag = On
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</pre>
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Note that short_open_tag appears twice in /etc/php.ini and you need to set "short_open_tag = On":http://www.apachefriends.org/f/viewtopic.php?p=155513 at around line 229 for it to take effect.
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h3. [[Download Appion Files|Download Appion and Leginon Files]]
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<pre>
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svn co http://emg.nysbc.org/svn/myami/trunk myami/
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</pre>
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Also available for centos6 is the myami-2.2-redux branch. This has the same features as the 2.2 release, but the portions of myami that were incompatible with Centos5 have been replaced with what we call Redux.
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<pre>
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svn co http://emg.nysbc.org/svn/myami/branches/myami-2.2-redux  myami/
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</pre>
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h3. Install and Start Redux 
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<pre>
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cd myami
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./pysetup.sh install
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mkdir /tmp/redux
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/etc/init.d/reduxd start
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</pre>
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h3. [[Install the Web Interface]]
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<pre>
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cp -r myamiweb/ /var/www/html/ 
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</pre>
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Visit http://localhost/myamiweb/setup and follow instructions in Web Tools Setup Wizard.
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See also [[Install the Web Interface Advanced]].