{"id":2302,"date":"2026-01-02T16:06:03","date_gmt":"2026-01-02T19:06:03","guid":{"rendered":"https:\/\/helpsysadmin.com.br\/blog\/?p=2302"},"modified":"2026-04-26T20:44:09","modified_gmt":"2026-04-26T23:44:09","slug":"complete-guide-directadmin-for-administrators","status":"publish","type":"post","link":"https:\/\/helpsysadmin.com.br\/blog\/en\/complete-guide-directadmin-for-administrators\/","title":{"rendered":"Complete Guide to DirectAdmin for Administrators: Installation, Security, and Performance"},"content":{"rendered":"<div id=\"helps-3675303596\" class=\"helps-before-content-2 helps-entity-placement\"><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3661896953164277\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- 2anuncios display quadrado -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3661896953164277\"\r\n     data-ad-slot=\"5051229894\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n<p class=\"wp-block-paragraph\">This is a Complete Guide to DirectAdmin for Administrators, covering Installation, Security, and Performance. DirectAdmin is one of the most widely used control panels on <a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-instalar-crowdsec\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Como instalar Crowdsec\" target=\"_blank\" rel=\"noopener\">Linux<\/a> servers due to its lightweight nature, simplicity, and excellent cost-benefit ratio. It is widely adopted in VPS and dedicated servers, especially in shared hosting, reseller, and production server environments focused on performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide was created for server administrators who want to master DirectAdmin, from proper installation to advanced security, optimization, and performance practices.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-system-requirements\">System Requirements<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before installing DirectAdmin, check the minimum requirements:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Supported Operating Systems:\n<ul class=\"wp-block-list\">\n<li>AlmaLinux 8 \/ 9 \/ 10<\/li>\n\n\n\n<li>Rocky Linux 8 \/ 9 \/ 10<\/li>\n\n\n\n<li>CloudLinux 8 \/ 9 \/ 10<\/li>\n\n\n\n<li>Debian 10 \/ 11 \/ 12<\/li>\n\n\n\n<li>Ubuntu 20.04 \/ 22.04 \/ 24.04<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>CPU: Minimum 1 core (2+ recommended)<\/li>\n\n\n\n<li>RAM: Minimum 1 GB (4 GB or more recommended)<\/li>\n\n\n\n<li>Disk Space: 20 GB free<\/li>\n\n\n\n<li>Dedicated IP Address<\/li>\n\n\n\n<li>Properly configured Hostname (FQDN)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-server-preparation\">Server Preparation<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-configure-hostname\">Configure Hostname<br><\/h3>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>hostnamectl set-hostname server.seudominio.com<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Edit the file with: nano <code>\/etc\/hosts<\/code>:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>IP_DO_SERVIDOR server.seudominio.com server<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-update-the-system\">Update the System<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">dnf update -y # RHEL-based<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">apt update &amp;&amp; apt upgrade -y # Debian\/Ubuntu<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-directadmin-installation\">DirectAdmin Installation<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-download-and-installation\">Download and Installation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">cd \/root<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>sh &lt;(curl -fsSL https:\/\/download.directadmin.com\/setup.sh)<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">During the installation process, you will be prompted for your License Key.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After completion, temporary access will be via:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/IP_DO_SERVIDOR:2222\">https:\/\/IP_DO_SERVIDOR:2222<\/a><br>If your hostname is already pointing to the server&#8217;s IP address, use https:\/\/hostname:2222.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-user-structure-in-directadmin\">User Structure in DirectAdmin<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DirectAdmin works with three main levels:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Admin \u2013 full server control<\/li>\n\n\n\n<li>Reseller \u2013 user account management<\/li>\n\n\n\n<li>User \u2013 website hosting and services<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This separation ensures better organization and security.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-essential-initial-setup\">Essential Initial Setup<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-update-the-custombuild\">Update the CustomBuild<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">cd \/usr\/local\/directadmin\/custombuild<br>.\/build update<br>.\/build versions<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-choose-stack-web\">Choose Stack Web<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Recommended for production:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nginx as a reverse proxy<\/li>\n\n\n\n<li>Apache with MPM Event<\/li>\n\n\n\n<li>PHP-FPM<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">.\/build set webserver nginx_apache<br>.\/build set php1_release 8.2<br>.\/build set php1_mode php-fpm<br><br>Edit the file: options.conf<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>cd \/usr\/local\/directadmin\/custombuild\/\nnano options.conf<\/pre><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Change the following values:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>php2_release=8.3\nphp_timezone=America\/Sao_Paulo\nmysql_backup=yes\nmysql_backup_gzip=yes\nunit=yes\nnodejs_provider=distro\nwebserver=nginx_apache\nmodsecurity=yes\nmodsecurity_ruleset=owasp\nphpmyadmin_public=no\nblockcracking=yes\neasy_spam_fighter=yes\nspamd=spamassassin\nphp_gmp=yes\nphp_igbinary=yes\nphp_imagick=yes\nphp_imap=yes\nphp_ioncube=yes\nphp_mcrypt=yes\nphp_opcache=yes\nphp_redis=yes\nphp_xmlrpc=yes\nphp_yaml=yes\nphp_zend=yes\nphp_zstd=yes\ncsf=no<\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-security-in-directadmin\">Security in DirectAdmin<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-firewall\">Firewall<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Install and configure CSF:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>cd \/usr\/src\ngit clone https:\/\/github.com\/Aetherinox\/csf-firewall.git\ncd csf-firewall\/src\/\n.\/install.sh<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Access DirectAdmin and configure:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extras Features \u2192 ConfigServer Security &amp; Firewall&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-modsecurity-rules\">ModSecurity Rules:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Some rules provided by OWASP generate false positives, blocking access to website resources. Below we will disable these rules.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Access DirectAdmin with the admin user.<\/li>\n\n\n\n<li>Access Server Manager &gt;&gt; ModSecurity.<\/li>\n\n\n\n<li>Click the Default Configuration button.<\/li>\n\n\n\n<li>Under Excluded rules, locate the rule ID. This is where you will enter the ID of the rule you want to disable. Enter the ID and then click the Add exclusion button. When finished, click the save configuration button. Finally, after saving the settings in the Linux shell, restart your web server (example: systemctl restart nginx and systemctl restart httpd).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The IDs of the rules we want to disable are:<br>921130<br>941100<br>941160<br>920420<br>941130<br>941140<br>941180<br>941190<br>941250<br>941260<br>932370<br>942290<br>930130<br>933150<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ssh-protection\">SSH protection<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Change default port<\/li>\n\n\n\n<li>Disable root login by password<\/li>\n\n\n\n<li>Use key authentication<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">PermitRootLogin prohibit-password<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tip:<\/strong> Try logging in again while keeping a window open.<br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-crowdsec\">Crowdsec<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Recommended for protecting services such as HTTP, SSH, FTP, SMTP, WordPress, etc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-install-crowdsec\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Click here:<\/strong> <strong>How to install Crowdsec<\/strong><\/a><strong><br><\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-system-hardening\">System Hardening<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Disable unnecessary services<\/li>\n\n\n\n<li>Keep your system always updated<\/li>\n\n\n\n<li>Use correct file permissions<\/li>\n\n\n\n<li>Enable automatic backups<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-performance-and-optimization\">Performance and Optimization<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-php-fpm\">PHP-FPM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Configura\u00e7\u00e3o recomendada:<\/strong><br>pm = ondemand<br>pm.max_children = <a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/php-fpm-how-to-calculate-pm-max_children-correctly\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Click here : PHP-FPM: How to Calculate pm.max_children Correctly<\/strong><\/a><br>pm.process_idle_timeout = 10s<br>pm.max_requests = 500<br><br><strong>To configure php-fpm, use: <\/strong>(change php-fpm.conf.83 to the PHP version you want to change)<br><\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre> mkdir -p \/usr\/local\/directadmin\/custombuild\/custom\/configure\/fpm\/conf\/\n cp \/usr\/local\/directadmin\/custombuild\/configure\/fpm\/conf\/php-fpm.conf.83 \/usr\/local\/directadmin\/custombuild\/custom\/configure\/fpm\/conf\/\n cd \/usr\/local\/directadmin\/custombuild\/custom\/configure\/fpm\/conf\/\n nano php-fpm.conf.83\n#altere para as configura\u00e7\u00f5es acima e execute\nda build php<\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-opcache\">OPcache<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">opcache.enable=1<br>opcache.memory_consumption=256<br>opcache.max_accelerated_files=100000<br>opcache.validate_timestamps=0<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>cd \/usr\/local\/directadmin\/custombuild\nmkdir -p custom\/opcache\ncp -p configure\/opcache\/opcache.ini custom\/opcache\/opcache.ini\nnano custom\/opcache\/opcache.ini\n# insira as configura\u00e7\u00f5es acima e a seguir execute\nda build opcache<\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-mariadb\">MariaDB<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Best practices: <a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/optimizing-mariadb-performance\/\" target=\"_blank\" rel=\"noreferrer noopener\">Complete guide to optimizing MariaDB performance. <\/a><\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-backups-no-directadmin\">Backups no DirectAdmin<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Backups local ou remote (FTP)<\/li>\n\n\n\n<li>Automatic scheduling<\/li>\n\n\n\n<li>Periodic restoration tests<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Access via DirectAdmin:<\/strong> Admin Tools &gt;&gt; Admin Backup\/Transfer<br>Next, click on Schedule and fill in the requested fields.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-monitoring\">Monitoring<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Recommended tools:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Netdata<\/li>\n\n\n\n<li>Zabbix(requires a separate server for installation)<\/li>\n\n\n\n<li>htop<\/li>\n\n\n\n<li>iotop<\/li>\n\n\n\n<li>journalctl<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-important-logs\">Important Logs<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apache\/Nginx: <code>\/var\/log\/httpd\/<\/code> ou <code>\/var\/log\/nginx\/<\/code><\/li>\n\n\n\n<li>DirectAdmin: <code>\/var\/log\/directadmin\/<\/code><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-common-problems-and-solutions\">Common Problems and Solutions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-port-2222-does-not-open\">Port 2222 does not open.<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check firewall<\/li>\n\n\n\n<li>Verify that DirectAdmin is active<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">systemctl status directadmin<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-slow-websites\">Slow websites<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check PHP-FPM<\/li>\n\n\n\n<li>Adjust cache<\/li>\n\n\n\n<li>Use Redis or Memcached<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-good-practices-for-production\">Good Practices for Production<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Using CloudLinux on shared hosting<\/li>\n\n\n\n<li>Enable CageFS isolation<\/li>\n\n\n\n<li>Limit resources per user<\/li>\n\n\n\n<li>Monitor usage constantly<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DirectAdmin<\/strong> is an excellent choice for administrators seeking performance, stability, and simplicity. With a proper installation, strong security practices, and correct performance adjustments, it&#8217;s possible to maintain highly reliable and scalable servers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide serves as a complete foundation for professional environments, from small VPS to high-demand servers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br>See also: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/benchmark-script-on-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Benchmark Script on Linux<\/a><\/strong><br>See also: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-do-i-add-security-headers-using-cloudflare\/\">How do I add security headers using Cloudflare?<\/a><\/strong><br>See also: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/create-an-os-template-in-virtualizor\/\">How to Create an OS Template in Virtualizor: Complete Guide 2025<\/a><\/strong><br>Veja tamb\u00e9m: <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/escolher-entre-cpanel-e-directadmin\/\" target=\"_blank\" rel=\"noreferrer noopener\">Como Escolher Entre cPanel e DirectAdmin<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is a Complete Guide to DirectAdmin for Administrators, covering Installation, Security, and Performance. DirectAdmin is one of the most widely used [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2177,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1206,1209,1204],"tags":[],"class_list":["post-2302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","category-security","category-server-management"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Complete Guide to DirectAdmin for Administrators<\/title>\n<meta name=\"description\" content=\"This is a Complete Guide to DirectAdmin for Administrators, covering Installation, Security, and Performance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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