Hardware and Software Requirements

OTRS can be installed on Linux and on other Unix derivates (e.g. OpenBSD or FreeBSD). To run OTRS on Microsoft Windows is not possible.

To run OTRS, you’ll also need to use a web server as reverse proxy and a database server. Apart from that, you should install Perl and/or install some additional Perl modules on the OTRS machine.

Perl must be installed on the same machine as OTRS. The database back end and the web server may be installed locally or on another host.

For Perl, you will need some additional modules which can be installed either with the Perl shell and CPAN, or via the package manager of your operating system (rpm, yast, apt-get).

OTRS has a console command to check the environment and the missing modules.

otrs> /opt/otrs/bin/otrs.CheckEnvironment.pl

If some packages are missing, you can get an install command for your operating system, if you run the script with --list option.

otrs> /opt/otrs/bin/otrs.CheckEnvironment.pl --list

If all needed packages are installed, the output of the environment check script shows the installed packages and the version numbers.

Checking for Perl Modules:
  o Archive::Tar.....................ok (v2.24)
  o Archive::Zip.....................ok (v1.63)
  o Crypt::Eksblowfish::Bcrypt.......ok (v0.009)
  o Crypt::SSLeay....................ok (v0.73_06)
  o CryptX...........................ok (v0.061)
  o Date::Format.....................ok (v2.24)
  o DateTime.........................ok (v1.50)
  o DBI..............................ok (v1.641)
  o DBD::mysql.......................ok (v4.046)
  o DBD::ODBC........................Not installed!  Use: 'apt-get install -y libdbd-odbc-perl' (optional - Required to connect to a MS-SQL database.)
  o DBD::Oracle......................Not installed!  Use: 'cpan DBD::Oracle' (optional - Required to connect to a Oracle database.)
  o DBD::Pg..........................Not installed!  Use: 'apt-get install -y libdbd-pg-perl' (optional - Required to connect to a PostgreSQL database.)
  o Digest::SHA......................ok (v5.96)
  o Encode::HanExtra.................ok (v0.23)
  o EV...............................ok (v4.22)
  o IO::Socket::SSL..................ok (v2.060)
  o JSON::XS.........................ok (v3.04)
  o List::Util::XS...................ok (v1.46_02)
  o LWP::UserAgent...................ok (v6.35)
  o Mail::IMAPClient.................ok (v3.39)
    o Authen::SASL...................ok (v2.16)
    o Authen::NTLM...................ok (v1.09)
  o Moose............................ok (v2.2011)
  o Net::DNS.........................ok (v1.17)
  o Net::LDAP........................ok (v0.65)
  o Search::Elasticsearch............ok (v6.00)
  o Specio...........................ok (v0.42)
  o Specio::Subs.....................ok (v0.42)
  o Template.........................ok (v2.27)
  o Template::Stash::XS..............ok (undef)
  o Text::CSV_XS.....................ok (v1.36)
  o Time::HiRes......................ok (v1.9741)
  o XML::LibXML......................ok (v2.0132)
  o XML::LibXSLT.....................ok (v1.96)
  o XML::Parser......................ok (v2.44)
  o YAML::XS.........................ok (v0.74)

Checking for External Programs:
  o GnuPG............................ok (v2.2.8)
  o npm..............................ok (v5.8.0)
    o Node.js........................ok (v8.11.4)
  o OpenSSL..........................ok (v1.1.1/OpenSSL)

Hardware Requirements

Hardware requirements highly depend on the usage of OTRS. OTRS can be used to process a few tickets per month or to process hundreds of tickets per day. The storage requirement also depends on the number of tickets and size of attachments.

We recommend using a machine with at least:

  • 3 GHz Xeon or comparable CPU
  • 8 GB RAM
  • 256 GB storage

Note

Hardware requirements depend on the usage of OTRS. Please contact your OTRS consultant before deploying a hardware.

Software requirements

Perl
  • Perl 5.16.0 or higher
  • Perl packages listed by /opt/otrs/bin/otrs.CheckEnvironment.pl console command
Web Servers
  • Apache2
  • nginx
  • Any other web server that can be used as a reverse proxy
Databases
  • MySQL 5.0 or higher
  • MariaDB
  • PostgreSQL 9.2 or higher
  • Oracle 10g or higher
Other dependencies
  • Elasticsearch 6.x (higher versions are not supported)
  • Node.js 8.9 or higher
Web browsers
  • Apple Safari version 7 or higher
  • Google Chrome
  • Microsoft Internet Explorer 11
  • Microsoft Edge
  • Mozilla Firefox version 32 or higher
  • Any other modern web browser with JavaScript support