248 lines
11 KiB
Markdown
248 lines
11 KiB
Markdown
---
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sidebar_position: 5
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---
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# Server Settings
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## Server Time
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The 'Change TimeZone' page allows you to view the current TimeZone and change it.
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To change a timezone for your server simply select the new timezone in the select and click on 'Change Timezone' button to save.
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:::info
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The TimeZone setting is handy for running scheduled [cronjobs](/docs/panel/advanced/cronjobs) in your local timezone.
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:::
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## Service Status
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The Services page provides information about the status and version of all your currently installed services.
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It includes details about:
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- Apache or Nginx
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- PHP
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- MySQL
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- phpMyAdmin
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- NodeJS
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- Python
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- REDIS
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- Memcached
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- Elasticsearch
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From this page, you have the ability to view service versions, monitor their status, and restart MySQL or Nginx/Apache services.
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Each service's status is indicated by the "on" or "off" label displayed next to it.
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To restart MySQL or Nginx/Apache service click on the 'Restart' link next to it.
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This will force stop of the service process and immediatelly start it.
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## Nginx / Apache Settings
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The Nginx / Apache Configuration Editor page allows you to view and edit the main Apache/Nginx configuration file inside your docker container.
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- For Apache the main configuration file is: `/etc/apache2/httpd.conf`
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- For Nginx the main configuration file is: `/etc/nginx/nginx.conf`
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:::danger
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Editing this file is for advanced users. Make sure to create a backup before making any changes, as even a small syntax error can cause server restart failure and downtime for all your websites.
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:::
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## MySQL Settings
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Edit MySQL configuration
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These settings are used to configure various aspects of MySQL's service:
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- **max_allowed_packet**: Maximum size of the communication buffer between the client and server.
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- **max_connect_errors**: Maximum number of interrupted connections before the server blocks the host.
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- **max_connections**: Maximum number of simultaneous client connections.
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- **open_files_limit**: Limit on the number of file descriptors that mysqld should be allowed to use.
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- **performance_schema**: Whether to enable the Performance Schema.
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- **sql_mode**: SQL mode to set. Here it's set to ERROR_FOR_DIVISION_BY_ZERO.
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- **thread_cache_size**: Number of threads the server should cache for reuse.
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- **interactive_timeout**: The number of seconds the server waits for activity on an interactive connection before closing it.
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- **wait_timeout**: The number of seconds the server waits for activity on a connection before closing it.
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- **log_output**: Where to write the general query log. It's set to FILE.
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- **log_error**: Location of the error log.
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- **log_error_verbosity**: Verbosity level of the error log.
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- **general_log**: Whether to enable the general query log.
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- **general_log_file**: Location of the general query log file.
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- **long_query_time**: Time in seconds that a query must take to be considered slow.
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- **slow_query_log**: Whether to enable the slow query log.
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- **slow_query_log_file**: Location of the slow query log file.
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- **join_buffer_size**: Size of the buffer used for index scans.
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- **key_buffer_size**: Size of the buffer used for index blocks.
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- **read_buffer_size**: Size of the buffer used for sequential scans.
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- **read_rnd_buffer_size**: Size of the buffer used for random reads.
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- **sort_buffer_size**: Size of the buffer used for sorting.
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- **innodb_log_buffer_size**: Size of the buffer for InnoDB log writes.
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- **innodb_log_file_size**: Size of each InnoDB log file.
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- **innodb_sort_buffer_size**: Size of the buffer used for sorting in InnoDB.
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- **innodb_buffer_pool_chunk_size**: Size of each chunk in the InnoDB buffer pool.
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- **innodb_buffer_pool_instances**: Number of instances that the InnoDB buffer pool is divided into.
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- **innodb_buffer_pool_size**: Total size of the InnoDB buffer pool.
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- **max_heap_table_size**: Maximum size of in-memory temporary tables.
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- **tmp_table_size**: Size of in-memory temporary tables used for ALTER TABLE.
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Make sure to adjust these values based on your specific server requirements and workload. Additionally, regularly review the MySQL error log for any issues or warnings.
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:::warning
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Modifying these values without proper understanding may impact MySQL performance and stability. Make backups and consult the [official MySQL documentation](https://dev.mysql.com/doc/refman/8.0/en/server-configuration.html) before making changes.
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:::
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## PHP Settings
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### Change PHP version for domain
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PHP versions tab allows you to view current PHP version for each domain and change the version per domain.
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To change a PHP version for a domain simply select new version and click on the 'Change PHP Version' button to save.
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:::warning
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Changing the PHP version will stop all the processes on your site. It takes 1-2 seconds to complete. Be sure to check your script and plugin requirements to know which PHP version works best for your website.
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:::
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### Set default PHP version
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This option allows you to set the default PHP version that will be used for newly added domains.
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You can also view current default version setting.
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:::info
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phpMyAdmin runs by default on the version that you set here, but due to phpMyAdmin's minimum requirements, if the PHP version is less than 8.0, then the [default PHP version defined by the administrator](/docs/admin/settings/openpanel) will be used instead.
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:::
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### Install PHP version
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To install a new PHP version simply select the version from the 'Select PHP Version to Install:' select and click on the 'Install' button to start the process.
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The process takes from 2-10 minutes to finish and you can view a real-time output of the installation process:
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Once the process is complete the new PHP version will be available for use.
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:::info
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For best performance we recommend to only install PHP versions that you will be activelly using.
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:::
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### View PHP extensions
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The PHP extensions tab lists all installed extensions for PHP versions in a same manner as a [phpinfo function](https://www.php.net/manual/en/function.phpinfo.php).
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### View PHP options
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The PHP options tab lists general information for each PHP verison from the php.ini file.
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Listed values:
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- max_execution_time
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- max_input_time
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- memory_limit
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- post_max_size
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- upload_max_filesize
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To modify any of these values simply click on the 'Edit PHP.INI' link for that version.
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Default values for these settings on all PHP versions installed via OpenPanel interface are:
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- max_execution_time = 600
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- max_input_time = 600
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- memory_limit = -1 (unlimited)
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- post_max_size = 1024M
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- upload_max_filesize = 1024M
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### PHP.INI Editor
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The primary configuration file for PHP is php.ini. A distinct php.ini file exists for each PHP version installed on the server.
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With the php.ini editor, you can modify the PHP configuration for each version and configure settings such as:
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- Error Reporting: Control error reporting and handling, including displaying errors, error logging, and verbosity.
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- File Uploads: Configure settings related to file uploads, such as maximum file size, file type restrictions, and temporary directory.
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- Memory Management: Adjust memory limits for PHP scripts using settings like `memory_limit`.
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- Execution Time: Set the maximum script execution time with `max_execution_time`.
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- Display Errors: Choose whether to display errors in the browser using the `display_errors` setting.
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- Date and Time: Set the default time zone with `date.timezone`.
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- Session Handling: Configure session-related settings, including session save path and session cookie parameters.
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- Error Handling: Define custom error handling functions using `set_error_handler` and `set_exception_handler`.
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- Database Connections: Adjust settings related to database connections, like PDO or MySQL.
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- OPcache: Fine-tune PHP's opcode cache with settings like `opcache.enable` and `opcache.memory_consumption`.
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- Security: Enhance security with settings like `disable_functions`, which disables specific PHP functions, and `open_basedir` to restrict file system access.
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- Resource Limits: Control resource usage with settings like `max_input_vars`, which limits the number of input variables.
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- PHP Modules: Enable or disable PHP extensions and modules using settings like `extension`.
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and many more.
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[List of php.ini directives](https://www.php.net/manual/en/ini.list.php)
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#### Disabling dangerous functions
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To enhance the security of your PHP scripts and server, it's important to be cautious about allowing certain PHP functions that can be potentially dangerous.
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You can disable these functions for the PHP versions you're using by editing the php.ini files and setting:
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```bash
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disable_functions = system, system_exec, shell, shell_exec, exec, passthru, proc_close, proc_open, ini_alter, dl, popen, show_source, inject_code, mysql_pconnect, openlog, php_uname, phpAds_remoteInfo, phpAds_XmlRpc, phpAds_xmlrpcDecode, phpAds_xmlrpcEncode, popen, posix_getpwuid, posix_kill, posix_mkfifo, posix_setpgid, posix_setsid, posix_setuid, posix_setuid, posix_uname, proc_get_status, proc_nice, proc_terminate, syslog, xmlrpc_entity_decode, apache_setenv, eval, pfsockopen, leak, apache_child_terminate
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```
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same can be achieved from the terminal by running the following command:
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```bash
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echo "disable_functions = system, system_exec, shell, shell_exec, exec, passthru, proc_close, proc_open, ini_alter, dl, popen, show_source, inject_code, mysql_pconnect, openlog, php_uname, phpAds_remoteInfo, phpAds_XmlRpc, phpAds_xmlrpcDecode, phpAds_xmlrpcEncode, popen, posix_getpwuid, posix_kill, posix_mkfifo, posix_setpgid, posix_setsid, posix_setuid, posix_setuid, posix_uname, proc_get_status, proc_nice, proc_terminate, syslog, xmlrpc_entity_decode, apache_setenv, eval, pfsockopen, leak, apache_child_terminate" > /opt/alt/php-fpm73/usr/php/php.d/disabled_function.ini && service php-fpm73 restart
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```
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## ModSecurity Settings
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The ModSecurity settings page allows you to view current status for each domain and enable/disable ModSecurity WAF per domain.
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## Server Information
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The page offers a section where you can access Server Information.
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This includes:
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- Hostname
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- Average load
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- Uptime
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- IP Address
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- OpenPanel version
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- Operating System
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- Release and Version numbers
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- Processor architecture
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