Web server requirements

YetiForce CRM requires a proper web server configuration. It is a key element for the process of installation as well as for the system to be stable. Most professional web servers meet the requirements presented below. However, in case your server does not meet all the requirements, ask your administrator to adjust the configuration and send him a link to this article. If your administator cannot change the configuration, it might be time to consider upgrading your server.  

01 server www2

During the installation process, the system verifies the actual server configuration and shows the elements that are incorrect and require a change in parameters. Please note that the requirements presented below are not general and not for each installation, for more complex systems they should be verified and optimized individually.

The most recent and complete configuration can be found on GitHub and in the module "Server Configuration" in the developer version:

Core software for the server (LAMP/LEMP)

  • Operating system - Debian, Ubuntu, RedHat, Mint - works on most Linux distributions. We do not recommend MS Windows operating system as well as MS Windows Server. Although our system works all adequately on Windows servers, it is not an optimal environment in terms of web applications.
  • Webserver 
    • Nginx 1.19 - works also properly on earlier versions, however, the latest stable versions are recommended. You can also use alternative software as long as it is compatible
    • Apache 2.4 - works also properly on earlier versions, i.e. 2.1, 2.2, 2.3 (the latest stable versions are recommended). You can also use alternative software as long as it is compatible.
      The system does not work with the ModSecurity web server extension
  • Database
    • MariaDb 10.5 (recommended) - the latest stable versions are recommended. Versions below 10 are not recommended. 
    • MySQL 5.7, 8.0 -works also properly on earlier versions, i.e. 5.6 (the latest stable versions are recommended). You can also use alternative software as long as it is compatible.
  • PHP 7.4 (recommended); 7.3.x , 8.0.x (during testing). The latest stable 7 versions are recommended (eg.  7.4.x.)

Requirements for data base engine [MySQL/MariaDb]

  • ENGINE = InnoDB should be available and enabled by default (disable --skip-innodb)
  • innodb_default_row_format = 'dynamic'
  • character-set-server = utf8
  • default-character-set = utf8
  • collation-server = utf8_general_ci
  • character_set_system = utf8
  • table_open_cache = 1000
  • table_definition_cache = 1400
  • innodb_lock_wait_timeout = 600
  • wait_timeout = 600
  • interactive_timeout = 600
  • max_allowed_packet = 10M (minimum value, preferably 128M)
  • innodb_file_per_table = ON
  • innodb_stats_on_metadata = OFF
  • ft_min_word_len = 2

The requirements depend on the system version, recommended configuration:

Requirements for PHP

The requirements depend on the system version, recommended configuration for php.ini:

Third party libraries configuration

  • IMAP Mandatory
  • PDO Mandatory
  • PDO_MYSQLMandatory
  • MySQL Native Driver (mysqlnd) Mandatory
  • OpenSSL Mandatory
  • Curl Mandatory
  • GD Mandatory
  • PCRE Mandatory
  • XML Mandatory
  • JSON Mandatory
  • SESSION Mandatory
  • DOM Mandatory
  • ZIP Archive Mandatory
  • MBSTRING Mandatory
  • SOAP Mandatory
  • FILEINFO Mandatory
  • ICONV Mandatory
  • INTL Mandatory
  • SPL Mandatory
  • Reflection Mandatory
  • SimpleXML Mandatory
  • bcmath Mandatory
  • filter Mandatory
  • ctype Mandatory
  • hash Mandatory
  • EXIF Optional (recommended for safety reasons)
  • LDAP Optional
  • OPCACHE Optional (recommended for better performance)
  • APCU Optional
  • IMAGICK Optional (recommended for safety reasons)
  • uopz Forbidden (the extension causes the system to crash and lock up)

Correct path configuration to third party libraries

  • PEAR
  • Net_SMTP
  • Net_IDNA2
  • Mail_mime


The requirements depend on the system version, recommended configuration: https://github.com/YetiForceCompany/YetiForceCRM/blob/stable/tests/setup/fpm/www.conf 

Web server

Apache: https://github.com/YetiForceCompany/YetiForceCRM/blob/stable/tests/setup/apache/.htaccess

Nginx: https://github.com/YetiForceCompany/YetiForceCRM/blob/stable/tests/setup/nginx

Permissions to folders and files 

Privileges to folders and files are often the most common source of problems for people who install an application on VPS and dedicated servers. There should be the same owner for all CRM files and folders. We prefer such a configuration of files [644] and folders [755] that allow full access from a browser to read and write uploaded files without changing privileges on these folders and files (so the browser has such privileges). It is necessary to remember that when the application is running, it also performs various operations such as read and write as well as creating and deleting files. If you do not know how to configure the privileges, ask your administrator to do it and send him a link to this article.

  • Configuration directory config
  • Application data directory app_data
  • User privileges directory user_privileges
  • Tabdata File user_privileges/tabdata.php
  • Menu file user_privileges/menu_0.php
  • User privileges file user_privileges/user_privileges_1.php
  • Cache Directory cache/
  • Address book directory cache/addressBook/
  • Image Cache Directory cache/images/
  • Import Cache Directory cache/import/
  • Logs directory cache/logs/
  • Session directory cache/session/
  • Cache templates directory cache/templates_c/
  • Cache upload directory cache/upload/
  • Vtlib test directory cache/vtlib/
  • Vtlib Test HTML Directory cache/vtlib/HTML
  • Cron modules directory cron/modules/
  • Modules Directory modules/
  • Storage Directory storage/
  • Product Image Directory storage/products/
  • User Image Directory storage/users/
  • Contact Image Directory storage/contacts/
  • MailView attachments directory storage/OSSMailView/
  • Logo Directory public_html/layouts/resources/Logo/
  • E-mail client public_html/modules/OSSMail/
  • Third party libraries public_html/libraries/


Supported browsers

A user should always have the most up-to-date version of a browser because only the most recent versions support the newest web technologies. Below is a list of browsers from the one that is the most recommended for YetiForce (Google Chrome) to the least recommended.  

  1. Google Chrome
  2. Firefox
  3. Opera
  4. Internet Explorer 
  5. Safari
  6. Other

Additional configuration using .htaccess

Some servers allow changing the configuration via the .htaccess file. We present some of the examples below.

Apache module (as set in httpd.conf "AllowOverride Options" or "AllowOverride All")

<IfModule mod_php5.c>
	php_flag	log_errors		On
	php_flag	display_errors		Off
	php_value	error_log		cache/logs/phpError.log
	php_value	memory_limit		512M
	php_flag	output_buffering	On
	php_flag	zlib.output_compression	Off
	php_flag	file_uploads		On
	php_value	upload_max_filesize	100M
	php_value	post_max_size		50M

FastCGI module

<IfModule fcgid_module.c>
	FcgidIOTimeout		600
	FcgidConnectTimeout	600
	FcgidBusyTimeout	600
	FcgidIdleTimeout	600
<IfModule mod_fcgid.c> IdleTimeout 600 ProcessLifeTime 600 IPCConnectTimeout 600 IPCCommTimeout 600 BusyTimeout 600 </IfModule>

Additional configuration using user.ini

You can also quickly change the PHP configuration by creating a user.ini file in the main directory ($_SERVER['DOCUMENT_ROOT']), right now it supports CGI/FastCGI. However, be careful because not all parameters can be configured in this way (https://www.php.net/manual/en/configuration.changes.modes.php).

More information available: here.
Example: https://github.com/YetiForceCompany/YetiForceCRM/blob/stable/.user.ini

HTTPS and HTTP2 encryption

We strongly recommend to always encrypt the connection to the server where YetiForce is installed. If the connection is not established through the HTTPS protocol the communication may be intercepted or altered by third parties.



connect_timeout = 3600
connect_timeout = 3600
net_read_timeout = 3600
net_write_timeout = 3600
wait_timeout = 3600
wait_timeout = 3600
innodb_lock_wait_timeout = 3600


max_execution_time = 3600
max_input_time = 3600
default_socket_timeout = 3600


pm.process_idle_timeout = 3600s
request_terminate_timeout = 3600


server {
client_body_timeout 3600;
send_timeout 3600;

location ~ \.php$ {
fastcgi_send_timeout 3600;
fastcgi_read_timeout 3600;
keepalive_timeout 3600;
proxy_connect_timeout 3600;
proxy_send_timeout 3600;
proxy_read_timeout 3600;
location ~ ^(.+\.php)(.*)$ {
fastcgi_send_timeout 3600;
fastcgi_read_timeout 3600;
keepalive_timeout 3600;
proxy_connect_timeout 3600;
proxy_send_timeout 3600;
proxy_read_timeout 3600;