Requirements & Installation

The minimum screen size for using iTop is 1024*768 pixels, but the higher resolution the better.

We recommend to use virtual machines running Debian 9 or Ubuntu 20.04 LTS

iTop is based on MySQL and PHP.

• Plus of-course a web server: Apache and IIS have built in configuration, other web server require extra work (eg. with NGINX).
• Graphviz is needed to display the impact analysis graph.
• required PHP extensions : ctype, dom, iconv, json, mbstring, mysqli, soap
• php-gd is optionnal but required to be able to add images with CKEditor and resize automatically images within HTML fields.
• fileinfo is usually present, but if missing you must add it, for attachment type identification, so preview can be proposed when pertinent.
• Check Encrypted data for what to install to managed EncryptedString attribute
• To select a database version, check MariaDB release notes by version and MySQL release notes

Recommended configuration

• MySQL / MariaDB parameters
• PHP parameters
• Secure your iTop instance
• Finetune performance

Optional requirements:

• For LDAP authentication iTop requires the PHP LDAP module. If this PHP module is not present iTop will not support LDAP or Active Directory identification.

Latest version of Chrome is recommended (Firefox is safe to).

• Since 2.7.0, IE9 is no more supported
• Following versions of iTop will no longer supports any Internet Explorer versions

In iTop, lots of pages are sending OQL queries as parameters. This is risk-free as queries are interpreted and customized by iTop before being transformed in a single Select only SQL query and sent to the DB server, so iTop :

• check syntax and classes validity
• adds appropriate filters according to user rights
• protects against injections

As OQL syntax is close to SQL, this may be blocked by a security system like mod_security. You must allow those in order to use iTop. For example with mod_security :

SecRule REQUEST_URI "@beginsWith /pages/UI.php" \
"id:'000013', \
phase:1, \
t:none, \
nolog, \
pass, \
ctl:ruleRemoveById=942190, \
ctl:ruleRemoveById=942360"

We strongly recommend to enable APCu. For more details, read Tuning iTop Performance

However, if you are using APCu on mutiple instances, after a Move To Production, the cache must be cleared on all instances. As we have no tools for doing this, practically speaking this means:

• either restart all web servers
• or do not use APCu

You can download iTop from SourceForge: https://sourceforge.net/projects/itop/files/itop

To install the required software on Ubuntu, run the following commands (as root):

PHP 7.2+ MariaDB

apt-get install apache2
  apt-get install mariadb-server
  apt-get install php7.2 php7.2-mysql php7.2-ldap php7.2-cli php7.2-soap php7.2-json graphviz
  apt-get install php7.2-xml php7.2-gd php7.2-zip libapache2-mod-php php7.2-mbstring

PHP 7.1 and MySQL

  apt-get install apache2
  apt-get install mysql-server
  apt-get install php php-mysql php-ldap php-cli php-soap php-json graphviz
  apt-get install php-xml php-gd php-zip libapache2-mod-php php-mbstring

  sudo mysql

  GRANT ALL PRIVILEGES ON *.* TO 'iTop'@'%' IDENTIFIED BY 'some_password';
  FLUSH PRIVILEGES;

To install the required software on Redhat / CentOS / Fedora, run the following commands (as root):

yum install httpd
yum install mysql mysql-server
yum install php php-mysql php-xml php-cli php-soap php-ldap php-gd php-zip php-json php-mbstring graphviz

Check this page : iTop and IIS

If you do not already have a MySQL database server, you can install it on the same system as the rest of the application.

1. Go to MySQL's download site: http://www.mysql.com/downloads/mysql/
2. Download the installer suitable for your system: select package named “MSI Installer” either the 32 or 64-bit version.
3. Launch the installation, by opening the downloaded .msi file.
4. Follow the instructions of the installation wizard

iTop relies on Graphviz to produce graphical representations of the object's life-cycle as well as the impact analysis graph.

On Linux, graphviz is already part of the prerequisites defined above, so there is nothing additionnal to do.

On Windows: download Graphviz from the web site and install it.