# setting up OTRS 4

I was asked to evaluate some ticket tracking tools and OTRS came back into my mind. The following steps outline the procedure to have OTRS correctly installed on CentOS 7:

2. Install and configure Postfix and Dovecot.
3. Make sure the following configuration for MySQL has been taken care of, especially for the 3rd line:
        max_allowed_packet=50M
query_cache_size=32M
innodb_log_file_size=1073741824
4. Install some additional perl modules from EPEL repository.
5. Install OTRS from command line:
yum install --nogpgcheck http://ftp.otrs.org/pub/otrs//RPMS/rhel/7/otrs-4.0.11-01.noarch.rpm
6. Once the installation is done, continue with the web installer from:
http://<your host ip>/otrs/installer.pl
7. Simply following the wizard and then you should have a working OTRS installation.