Appion

h1. Web Server Installation on CentOS 6

This is a work in progress. We'll write documentation on Appion Web Server Installation on CentOS 6 as we go.

Before you start, make sure you have CentOS 6 installed on your computer. Note that upgrade CentOS 5 to CentOS 6 can 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:

* http://linuxmoz.com/how-to-install-centos-6-linux-for-servers-desktops

* http://www.if-not-true-then-false.com/2011/centos-6-netinstall-network-installation

h3. [[Install Web Server Prerequisites]]

First install Extra Packages for Enterprise Linux (EPEL) - http://fedoraproject.org/wiki/EPEL

<pre>

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-7.noarch.rpm

rpm -ivh epel-release-6-7.noarch.rpm 

</pre>

Note that release version (6-7) is the current release at the time of this writing. Please click "here":http://mirrors.cat.pdx.edu/epel/6/i386/repoview/epel-release.html to get the newest 'epel-release' package.

Now install all prerequisites

<pre>

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

easy_install fs PyFFTW3

</pre>

h3. [[Configure php.ini]]

Edit /etc/php.ini and change line ~229 to

<pre>

short_open_tag = On

</pre>

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.

h3. [[Download Appion Files|Download Appion and Leginon Files]]

<pre>

svn co http://emg.nysbc.org/svn/myami/trunk myami/

</pre>

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.

<pre>

svn co http://emg.nysbc.org/svn/myami/branches/myami-2.2-redux  myami/

</pre>

h3. Install and Start Redux 

<pre>

cd myami

./pysetup.sh install

mkdir /tmp/redux

/etc/init.d/reduxd start

</pre>

h3. [[Install the Web Interface]]

<pre>

cp -r ../myamiweb/ /var/www/html/ 

</pre>

Visit http://localhost/myamiweb/setup and follow instructions in Web Tools Setup Wizard.

See also [[Install the Web Interface Advanced]].