3.2. System Prerequisites

3.2. System Prerequisites
	Chapter 3. Installation

3.2.1. Client Prerequisites
3.2.2. Server Prerequisites

Klaros-Testmanagement is a web-based application. Client and server side therefore have different system requirements, which are described in detail in the next sections.

3.2.1. Client Prerequisites

3.2.1.1. Supported Browsers

To access Klaros-Testmanagement, a modern web browser supporting JavaScript is required.

3.2.1.1. Supported Browsers

Apple Safari
Google Chrome
Microsoft Edge
Mozilla Firefox

	Microsoft Internet Explorer - Limited Support Notice
	Support for Microsoft Internet Explorer will be gradually discontinued in upcoming releases. As of now, basic functionality is still available, but display problems may occur.

Klaros-Testmanagement is designed for a minimum screen resolution of 1280x960 pixels. Full-HD (1920x1080) is the recommended resolution.

3.2.2. Server Prerequisites

3.2.2.1. Microsoft Windows
3.2.2.2. Linux
3.2.2.3. Available Disc Space

To run Klaros-Testmanagement, a Microsoft Windows or Linux 64-Bit operating system running on Intel/AMD x64 is required.

Name	Version
Microsoft Windows	Windows 7 SP1, Windows 8, Windows 8.1, Windows 10, Windows Server 2012 Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
CentOS, Red Hat Enterprise Linux (RHEL)	7.4+, 8.0+
SuSE	SUSE Linux Enterprise Server (SLES) 12
Ubuntu	16.04 LTS, 18.04 LTS, 20.04 LTS
Debian	stretch, buster
Other Linux Distributions	Other Linux distributions are expected to function without problems, as long as they are able to run the supplied 64-bit Java 11 Runtime environment. Yet, we do not make any compliance statement regarding these distributions.

Table 3.1. Supported Operating Systems

For optimal performance, using a separate database installation is highly recommended. This database is not required to run on the same physical machine as the Klaros-Testmanagement server.

Name	Version
Apache Derby	10.15.1.3 (embedded and preconfigured as default)
Microsoft SQLServer	SQLServer 2008, 2008 R2, 2012, 2014, 2016, 2017, 2019
MySQL	Version 5.5, 5.6, 5.7, 8.0
MariaDB	Version 10.3 or later
PostgreSQL	Version 9.4 or later

Table 3.2. Supported Database Systems

3.2.2.1. Microsoft Windows

To run Klaros-Testmanagement on Microsoft Windows operating systems the following requirements should be met:

Minimum requirements

2 GB RAM, 3 GHz Dual Core CPU
Recommended requirements (Remote Database)

4 GB RAM, 3 GHz Quad Core CPU
Recommended requirements (Local Database)

8 GB RAM, 3 GHz Quad-Core CPU
Operating system

Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows 7, Microsoft Windows 8, Microsoft Windows 8.1, Microsoft Windows 10.

3.2.2.2. Linux

To run Klaros-Testmanagement on Linux operating systems the following requirements should be met:

Minimum requirements

2GB RAM, 2GHz Dual-Core CPU
Recommended requirements (Remote Database)

4GB RAM, 3GHz Quad-Core CPU
Recommended requirements (Local Database)

8GB RAM, 3GHz Quad-Core CPU

Operating System

Linux Intel64/x86-64 (Intel 64 bit architecture) distribution containing glibc version 2.17 or better and version 2.2.1 or better of the GTK+ widget toolkit and associated libraries.

	GTK+ libraries only required in Windowed Mode
	The GTK+ libraries are only needed to run the Klaros-Testmanagement installer in windowed mode. Running the installer in console mode is possible without this requirement.

Restricting the Number of Open Files

Caution

	Caution
Klaros-Testmanagement stores database search indices in the `.klaros/indices` folder in home directory of the user account that is running the Klaros-Testmanagement application server. During the indexing process the amount of open files may exceed the predefined limit in the Linux operating system. The command ulimit -n shows the configured number of open files allowed, which should be set to a value of at least 4096. Please consult your system documentation on how to set this value (Usually by editing `/etc/security/limits.conf`).

Klaros-Testmanagement stores database search indices in the .klaros/indices folder in home directory of the user account that is running the Klaros-Testmanagement application server. During the indexing process the amount of open files may exceed the predefined limit in the Linux operating system.

The command ulimit -n shows the configured number of open files allowed, which should be set to a value of at least 4096. Please consult your system documentation on how to set this value (Usually by editing /etc/security/limits.conf).

3.2.2.3. Available Disc Space

Klaros-Testmanagement stores binary attachments in a file based repository inside the .klaros folder in home directory of the user account that is running the Klaros-Testmanagement application server.

Depending on the usage pattern a sufficient amount of disk space should be reserved for this account. If the file based Derby database is active, the database files will also be located in this directory.

	Recommended Available Disc Space
	Reserving 10 GB of disc space should be enough for typical usage patterns.