Difference between revisions of "CentOS7Install"

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* If you are continuing to next step immediately, you do not need to reboot.
* If you are continuing to next step immediately, you do not need to reboot.
## Disable selinux, by editing /etc/sysconfig/selinux:
## Disable selinux, by editing /etc/sysconfig/selinux:
<code>'''SELINUX=disabled'''</code>
<code>SELINUX=disabled</code>
* reboot the OS
* reboot the OS
## Adjust local services:
## Adjust local services:

Revision as of 09:58, 12 October 2016

RT 4.4.1 installation on CentOS 7.2.1511

This document provides a quick methodology for installing RT 4.4.1 on CentOS/RHEL 7.2 for an internet-connected server. It should be suitable with minor modifications for installation on CentOS 6.8 also. Where necessary notes about the different install steps for CentOS/RHEL 6.8 are indicated below.

  1. Assumptions
  • Access to the internet and CentOS OS and update repositories is available.
  • Installation testing was completed using CentOS 7.2.1511 minimal boot ISO.
  • httpd (Apache) 2.4 and mod_fcgid Apache modules were used as the host environment.
  • Testing was conducted in both KVM and vSphere environments.

Installation Steps

  1. OS Installation and Initial Configuration
  • (!) It is possible to automate the majority of this section using kickstart files.
    1. Install OS.
  • Install the OS from ISO or PXE boot using your normal methodology.
    1. Install prerequisites for RT from OS repository.
yum install expat gd graphviz mariadb-server openssl expat-devel gd-devel graphviz-devel mariadb-devel openssl-devel perl perl-CPAN wget screen mod_fcgid
yum groupinstall "Development Tools" "Web Server"
  • NOTE: On previous versions of CentOS/RHEL, replace the mariadb-server and mariadb-devel RPMs above with mysql-server and mysql-devel.
    1. Patch OS
yum update
  • Reboot the OS.
  • If you are continuing to next step immediately, you do not need to reboot.
    1. Disable selinux, by editing /etc/sysconfig/selinux:

SELINUX=disabled

  • reboot the OS
    1. Adjust local services:
systemctl enable mariadb.service
systemctl enable httpd.service
systemctl start mariadb.service
systemctl stop httpd.service
  • NOTE: httpd service needs to be stopped to allow RT web based configuration later.
  1. Configure Supporting Software
    1. Configure root password for mariadb:
mysqladmin -u root password
  • NOTE: configure the internal DB password for the local instance of mysqld or mariadb
    1. Install CPAN minus.
curl -L http://cpanmin.us | perl - --sudo App::cpanminus
    1. Configure RT to use cpanm for fixdeps:
export RT_FIX_DEPS_CMD=/usr/local/bin/cpanm
  1. RT Dependencies and Installation
    1. Get RT and extract to /tmp.
wget https://download.bestpractical.com/pub/rt/release/rt-4.4.1.tar.gz
tar xvzf rt-4.4.1.tar.gz -C /tmp
cd /tmp/rt-4.4.1
    1. Configure RT:
./configure --enable-graphviz --enable-gd --with-web-user=apache --with-web-group=apache
    1. Test the dependencies:
make testdeps
    1. Install the dependencies:
make fixdeps
  • NOTE: You may need to run the command more than once. On RHEL/CentOS 6.8, you may need to manually force the addition of the GD perl module via cpanm GD --force, as there is a known issue with one of the built in tests for GD.
    1. Confirm dependencies:
make testdeps
    1. Install RT (default install is to the /opt/rt4 directory):
 make install
  1. RT Configuration using Web Interface
  • (!) It is possible to complete this step by editing the RT files directly, and creating the database. Refer to the RT documentation for manual steps.
    1. Run the first run installation instance:
/opt/rt4/sbin/rt-server
    1. Configure using the web interface.
  • Access the server using a web browser to access the http port.
  • Configure the RT instance using the web interface. Refer to the RT documentation.
    1. Shutdown the rt-server instance.
  • When completed Ctrl-C the rt-server instance started above.
  1. Configure RT:
  • Modify RT to allow web access using a trailing /rt
  • (!) This is a personal preference. The web server example in the next section assumes /rt is used.
    1. Modify /opt/rt4/etc/RT_SiteConfig.pm. Add the following line:

Set( $WebPath, '/rt' );

  1. Configure web server
    1. Modify /etc/httpd/conf.d/fcgid.conf. Add:

FcgidMaxRequestLen 1073741824

    1. Create /etc/httpd/conf.d/rt.conf:
# RT4 configuration for Apache
### Optional apache logs for RT
# Ensure that your log rotation scripts know about these files
# ErrorLog /opt/rt4/var/log/apache2.error
# TransferLog /opt/rt4/var/log/apache2.access
# LogLevel debug

AddDefaultCharset UTF-8

Alias /rt/NoAuth/images /opt/rt4/share/html/NoAuth/images/

ScriptAlias /rt /opt/rt4/sbin/rt-server.fcgi/

DocumentRoot "/opt/rt4/share/html"

<Location /rt>
  # For Centos7/Apache 2.4 this line:
  Require all granted
  # For Centos6/Apache 2.2 these two lines:
  # Order allow,deny
  # Allow from all
  Options +ExecCGI
  AddHandler fcgid-script fcgi
</Location>
    1. Start apache:
systemctl start httpd.service
    1. Modify firewalld
  • Complete your firewalld configuration to suite your local requirements.
  • (!) NOTE: Depending on install method, firewalld may not be installed. You can also stop it for testing with the systemctl stop firewalld command.
  1. Installation Complete
    1. Access RT
  • Connect to RT using your web browser and start your site customization.