{"id":2305,"date":"2026-05-04T08:26:32","date_gmt":"2026-05-04T08:26:32","guid":{"rendered":"https:\/\/sreschool.com\/blog\/?p=2305"},"modified":"2026-05-04T08:26:33","modified_gmt":"2026-05-04T08:26:33","slug":"master-terminal-guide-to-optimize-and-secure-100-wordpress-sites-on-whm-cpanel-fix-high-cpu-php-fpm-load","status":"publish","type":"post","link":"https:\/\/sreschool.com\/blog\/master-terminal-guide-to-optimize-and-secure-100-wordpress-sites-on-whm-cpanel-fix-high-cpu-php-fpm-load\/","title":{"rendered":"Master Terminal Guide to Optimize and Secure 100+ WordPress Sites on WHM\/cPanel (Fix High CPU &amp; PHP-FPM Load)"},"content":{"rendered":"\n<p>Below is a <strong>Master Terminal Guide<\/strong> to reduce CPU load across ~100 WordPress sites under <code>\/home<\/code> on WHM\/cPanel.<\/p>\n\n\n\n<p>Based on your process output, the main issue is many PHP-FPM WordPress pools consuming CPU at once, especially pools like <code>gurukulgalaxy_com<\/code>, <code>theaiops_com<\/code>, <code>meraapnabihar_com<\/code>, <code>surgeryplanet_com<\/code>, and others.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Master Guide: Fix 100 WordPress Sites Under <code>\/home<\/code><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">0. Become root<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo -i\ncd \/home\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">1. Create working folder<\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>mkdir -p \/root\/wp-bulk-fix\ncd \/root\/wp-bulk-fix\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">2. Find all WordPress installs<\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>find \/home -type f -name wp-config.php &gt; wp-config-list.txt\nfind \/home -type f -name wp-cron.php &gt; wp-cron-list.txt\n\nwc -l wp-config-list.txt\nwc -l wp-cron-list.txt\n<\/code><\/pre>\n\n\n\n<p>View list:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat wp-config-list.txt\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">3. Backup all <code>wp-config.php<\/code><\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>while read -r file; do\n  cp -p \"$file\" \"$file.bak.$(date +%F-%H%M%S)\"\n  echo \"Backed up: $file\"\ndone &lt; wp-config-list.txt\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">4. Disable WP-Cron safely<\/h1>\n\n\n\n<p>This adds:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>define('DISABLE_WP_CRON', true);\n<\/code><\/pre>\n\n\n\n<p>before <code>wp-settings.php<\/code>.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>while read -r file; do\n  if grep -q \"DISABLE_WP_CRON\" \"$file\"; then\n    echo \"Already exists: $file\"\n  elif grep -q \"wp-settings.php\" \"$file\"; then\n    sed -i \"\/wp-settings.php\/i define('DISABLE_WP_CRON', true);\" \"$file\"\n    echo \"Updated: $file\"\n  else\n    echo \"Skipped, no wp-settings.php found: $file\"\n  fi\ndone &lt; wp-config-list.txt\n<\/code><\/pre>\n\n\n\n<p>Verify:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>grep -R \"DISABLE_WP_CRON\" \/home\/* 2&gt;\/dev\/null | wc -l\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">5. Create real server cron for all WordPress sites<\/h1>\n\n\n\n<p>Generate cron file:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat &gt; \/root\/wp-bulk-fix\/wp-cron-jobs.txt &lt;&lt;'EOF'\n# WordPress real cron jobs\nEOF\n\nwhile read -r file; do\n  echo \"*\/10 * * * * \/usr\/local\/bin\/php $file &gt;\/dev\/null 2&gt;&amp;1\" &gt;&gt; \/root\/wp-bulk-fix\/wp-cron-jobs.txt\ndone &lt; wp-cron-list.txt\n<\/code><\/pre>\n\n\n\n<p>Review:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat \/root\/wp-bulk-fix\/wp-cron-jobs.txt\n<\/code><\/pre>\n\n\n\n<p>Install into root crontab:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>crontab -l &gt; \/root\/wp-bulk-fix\/root-cron-backup.txt 2&gt;\/dev\/null\n\ncat \/root\/wp-bulk-fix\/root-cron-backup.txt \/root\/wp-bulk-fix\/wp-cron-jobs.txt | crontab -\n<\/code><\/pre>\n\n\n\n<p>Verify:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>crontab -l | grep wp-cron.php | wc -l\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">6. Block <code>xmlrpc.php<\/code> globally using Apache include<\/h1>\n\n\n\n<p>This is safer than editing 100 <code>.htaccess<\/code> files.<\/p>\n\n\n\n<p>Create Apache security include:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat &gt; \/etc\/apache2\/conf.d\/wp-xmlrpc-block.conf &lt;&lt;'EOF'\n&lt;Files \"xmlrpc.php\"&gt;\n    Require all denied\n&lt;\/Files&gt;\nEOF\n<\/code><\/pre>\n\n\n\n<p>Test Apache config:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>apachectl configtest\n<\/code><\/pre>\n\n\n\n<p>Restart Apache:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/scripts\/restartsrv_httpd\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">7. Protect WordPress login from brute force<\/h1>\n\n\n\n<p>Create global Apache rule:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat &gt; \/etc\/apache2\/conf.d\/wp-login-rate-limit-note.conf &lt;&lt;'EOF'\n# WordPress login protection should be handled with CSF\/LFD, Imunify360, or Cloudflare.\n# Avoid blocking wp-login.php globally unless you whitelist your own IP,\n# because it can lock out real site admins.\nEOF\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">8. Find most CPU-heavy PHP-FPM pools<\/h1>\n\n\n\n<p>Run anytime:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ps -eo pid,user,%cpu,%mem,args --sort=-%cpu | grep php-fpm | head -50\n<\/code><\/pre>\n\n\n\n<p>Also summarize pool names:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ps -eo args --sort=-%cpu | grep \"php-fpm: pool\" | awk -F'pool ' '{print $2}' | sort | uniq -c | sort -nr | head -30\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">9. Tune PHP-FPM from WHM, not directly<\/h1>\n\n\n\n<p>Do <strong>not<\/strong> edit generated PHP-FPM files manually.<\/p>\n\n\n\n<p>Use:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>WHM \u2192 MultiPHP Manager \u2192 User Domain Settings \u2192 PHP-FPM Settings\n<\/code><\/pre>\n\n\n\n<p>For heavy sites set:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pm = ondemand\npm.max_children = 2\npm.max_requests = 50\npm.process_idle_timeout = 10\n<\/code><\/pre>\n\n\n\n<p>For normal sites:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pm = ondemand\npm.max_children = 5\npm.max_requests = 100\npm.process_idle_timeout = 10\n<\/code><\/pre>\n\n\n\n<p>Restart:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/scripts\/restartsrv_apache_php_fpm\n\/scripts\/restartsrv_httpd\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">10. Find suspicious WordPress files<\/h1>\n\n\n\n<p>Recent PHP changes:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>find \/home -type f -name \"*.php\" -mtime -7 -ls | head -200\n<\/code><\/pre>\n\n\n\n<p>Known bad names:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>find \/home -type f \\( \\\n-name \"wp-vcd.php\" -o \\\n-name \"wso.php\" -o \\\n-name \"r57.php\" -o \\\n-name \"c99.php\" -o \\\n-name \"alfanew.php\" -o \\\n-name \".xtmp_*.php\" \\\n\\) -ls\n<\/code><\/pre>\n\n\n\n<p>Do <strong>not delete blindly<\/strong>. First move to quarantine:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mkdir -p \/root\/wp-bulk-fix\/quarantine\n<\/code><\/pre>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mv \/path\/to\/suspicious.php \/root\/wp-bulk-fix\/quarantine\/\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">11. Remove exposed PHPUnit from public sites<\/h1>\n\n\n\n<p>First list:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>find \/home -type d -path \"*\/vendor\/phpunit\" -ls\n<\/code><\/pre>\n\n\n\n<p>Backup list:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>find \/home -type d -path \"*\/vendor\/phpunit\" &gt; \/root\/wp-bulk-fix\/phpunit-dirs.txt\n<\/code><\/pre>\n\n\n\n<p>Remove only after review:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>while read -r dir; do\n  rm -rf \"$dir\"\n  echo \"Removed: $dir\"\ndone &lt; \/root\/wp-bulk-fix\/phpunit-dirs.txt\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">12. Restart services<\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>\/scripts\/restartsrv_apache_php_fpm\n\/scripts\/restartsrv_httpd\nsystemctl restart mariadb\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">13. Monitor after changes<\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>watch -n 5 'ps -eo user,pid,%cpu,%mem,args --sort=-%cpu | head -30'\n<\/code><\/pre>\n\n\n\n<p>Check load:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>uptime\nfree -h\n<\/code><\/pre>\n\n\n\n<p>Check Apache\/PHP errors:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>tail -f \/usr\/local\/apache\/logs\/error_log\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">14. Rollback WP-Cron change if needed<\/h1>\n\n\n\n<p>To remove the line:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>find \/home -type f -name wp-config.php | while read -r file; do\n  sed -i \"\/DISABLE_WP_CRON\/d\" \"$file\"\n  echo \"Rolled back: $file\"\ndone\n<\/code><\/pre>\n\n\n\n<p>Restore old root crontab:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>crontab \/root\/wp-bulk-fix\/root-cron-backup.txt\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">Best execution order<\/h1>\n\n\n\n<p>Do this order:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1. Find all wp-config.php\n2. Backup wp-config.php\n3. Disable WP-Cron\n4. Add real cron jobs\n5. Block xmlrpc.php globally\n6. Tune PHP-FPM for top CPU pools\n7. Scan suspicious PHP files\n8. Remove exposed PHPUnit\n9. Restart services\n10. Monitor CPU\n<\/code><\/pre>\n\n\n\n<p>Biggest impact will come from:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>WP-Cron disable + real cron\nxmlrpc.php block\nPHP-FPM max_children reduction\nWordPress caching\nbot protection\n<\/code><\/pre>\n\n\n\n<p>For your server, start with the top CPU pools first: <code>gurukulgalaxy_com<\/code>, <code>theaiops_com<\/code>, <code>meraapnabihar_com<\/code>, <code>surgeryplanet_com<\/code>, and <code>bhaso_com<\/code>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Below is a Master Terminal Guide to reduce CPU load across ~100 WordPress sites under \/home on WHM\/cPanel. Based on [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2305","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Master Terminal Guide to Optimize and Secure 100+ WordPress Sites on WHM\/cPanel (Fix High CPU &amp; PHP-FPM Load) - SRE School<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sreschool.com\/blog\/master-terminal-guide-to-optimize-and-secure-100-wordpress-sites-on-whm-cpanel-fix-high-cpu-php-fpm-load\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Master Terminal Guide to Optimize and Secure 100+ WordPress Sites on WHM\/cPanel (Fix High CPU &amp; PHP-FPM Load) - SRE School\" \/>\n<meta property=\"og:description\" content=\"Below is a Master Terminal Guide to reduce CPU load across ~100 WordPress sites under \/home on WHM\/cPanel. 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