Software Collections
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About
For certain applications, more recent versions of some software components are often needed in order to use their latest new features. Software Collections provides a set of dynamic programming languages, database servers, and various related packages that are either more recent than their equivalent versions included in the base SME Server 9.x system.
Installation
One must enable the scl repository. See the Software Collections scl repository page on how to enable this repository.
After enabling the scl repo, the scl packages can be installed by issuing the following command:
yum install scl-utils
Installation of a collection
All Software Collections of Red Hat are browsable : https://www.softwarecollections.org/en/scls/ and available : https://www.softwarecollections.org/repos/rhscl/
You have to enable the correct repository for example scl-php55 or scl-php54
yum list available \* --disablerepo=* --enablerepo=scl-php54
and to install a collection: (example)
yum install php54 --enablerepo=scl-php54
An overview of installed collections one can use:
scl -l
Collections will be installed in:
/opt/rh
as defined by the collection packager and noted here:
/etc/scl/prefixes
The one that build the software collection (called a provider) can tag his collections with a provider name. In the above case in '/opt/rh', the provider is Redhat. For SME Server this could be '/opt/sme' or personal collections e.g. '/opt/stephdl'
The /opt is the highly recommended installation location. However, in the case of SME Server, considerations to install in a different location could be considered regarding default backups etc. e.g. '/home/e-smith/files/scl/sme'.
Usage of collections
Please see the individual application articles:
Examples
run php54 on a hosted website (virtual host)
Install php54 from scl repo
yum --enablerepo=scl-php54 install php54-php.x86_64
Verify the installation,
scl enable php54 'php -v'
It should return this version (or higher)
PHP 5.4.16 (cli) (built: Jul 10 2014 10:06:38)
Create a template fragment that will enable apache to invoke php54 for a virtual domain
nano /etc/e-smith/templates/etc/httpd/conf/httpd.conf/VirtualHosts/70php54
paste this code fragment (including the last empty line):
{
use esmith::DomainsDB;
my $domains = esmith::DomainsDB->open_ro;
if (($domains->get_prop($virtualHost, 'php54') || 'disabled')
eq 'enabled')
{
$OUT = " #Enable php54 through Cgi-Bin wrapper. Needs a wrapper script in /cgi-bin/php54-wrapper\n";
$OUT .= " AddHandler php-cgi .php\n";
$OUT .= " Action php-cgi /cgi-bin/php54-wrapper\n";
$OUT .= " <Location />\n";
$OUT .= " Options +ExecCGI\n";
$OUT .= " </Location>\n";
}
}
and Save with <CTRL>-X - yes.
Create the cgi-wrapper script:
nano ~<Ibayname of MyVirtualDomain>/../cgi-bin/php54-wrapper
Insert this code fragment:
#!/bin/bash source /opt/rh/php54/enable exec php-cgi
and Save with <CTRL>-X - yes.
Then execute these commands:
cd ~<Ibayname of MyVirtualDomain>/../cgi-bin/ restorecon -RF php54-wrapper chown www:www php54-wrapper chmod ugo-rwx php54-wrapper chmod ug+rx php54-wrapper
The template fragment for httpd.conf needs a database setting to be enabled for the (virtual) domain.
Check with
db domains show <myVirtualDomain.com>
Edit with
db domains setprop <myVirtualDomain.com> php54 enabled
To enable this run:
expand-template /etc/httpd/conf/httpd.conf /etc/init.d/httpd-e-smith restart
Notes:
- This version of php uses the /opt/rh/php54/root/etc/php.ini file which uses default settings as configured by RedHat, use at your own risk. Adjust the settings according to your (security) needs.
- Using Cgi-Bin wrapper scripts makes your system vulnerable to Shellshock server bash vulnerability, make sure your server runs the latest version of bash.
- This example and code still have to be tested (I will soon).
- Source: This HowTo for CENTOS6
Building your own software collections
Please consider building your collection on non production systems only. For a full reference please refer to the developers manual here.
To be able to build your own software collection, an extra scl package has to be installed:
yum install scl-utils-build --enablerepo=scl
References
Other articles in this category
Mysql57, PHP Software Collections, Software Collections, Software Collections Repositories, Software Collections:MariaDB, Software Collections:MongoDB, Software Collections:MySQL, Software Collections:MySQL55, Software Collections:Nodejs, Software Collections:PHP, Software Collections:PostgreSQL, Software Collections:Python, Software Collections:Ruby on Rails
