WHM cPanel cheatsheet (configs, commands, fixes)

My handy reference page for common cPanel server commands and configurations.

License:

• Verify license /usr/local/cpanel/cpkeyclt --force – if this doesn’t work, check your license at https://verify.cpanel.net/app/verify

PHP:

• Change PHP version – go to WHM > MultiPHP Manager
• Change PHP settings – go to WHM > MultiPHP INI Editor

Modules:

• Manage them use EasyApache or module install – check and uncheck the ones you want.
• Need to install imagick? ea-php74-pecl install imagick to install imagick for php 7.4.
• WP-CLI – yum install wp-cli -y to install, then yes | wp cli update to update
• /opt/cpanel/ea-php74/root/usr/bin/php -v checks if ioncube installed for php 7.4. yum install ea-php74-php-ioncube10.x86_64 -y installs it for php 7.4.

Disk management:

• Recheck disk quotas /scripts/fixquotas – fixes the issue where user’s disk quota/usage aren’t updated immediately.

Backups:

• /usr/local/cpanel/bin/backup --force – manually force WHM backups
• /scripts/pkgacct username – manually backup single account
• use /etc/cpbackup-exclude.conf (globally) or /home/user/cpbackup-exclude.conf (local) file to exclude items from backup

Security & Firewall:

• WP-cron triggering “suspicious process” warnings – can go to WHM > Plugins > ConfigServer & Security Firewall > edit Isf ignore file > put in the rules as per the template is section 8 of this official CSF suite. Reference links: 1, 2
• blocking countries from certain ports (list of country codes)
• Change FTP port
• Disabling ConfigServer & Firewall alert emails. (Run service lfd restart if changes don’t take.)

SSH:

• Is pass auth or SSH key auth not working? – go edit vi /etc/ssh/sshd_config to allow permitrootlogin and pub key authorization.

DNS:

• Flush DNS – rndc flush

Database:

• Copy database from one to another (in phpmyadmin).
• To get mysql root password cat /root/.my.cnf
• /etc/redis.conf redis configuration file

FTP:

• Is it not working? Not listing the files or showing some weird errors. Try see if it need to allow the Passive Port Range in your firewall. I had to do this after enabling ConfigServer Security & Firewall (CSF).

Random Issues or Website down:

• Check your processes to see if your CPU is completely overloaded. (WHM > Process Manager).
• Check your available disk space (WHM > Show Current Disk Usage).
• Check your email to see if any services are down. Restart them if needed.

Logs:

• Comprehensive list of common logs.

Features & Packages:

• /var/cpanel/features directory has config files of all your Feature Lists.
• /var/cpanel/packages directory has config files of all your packages. Can quickly copy and rename to create new account packages. (Or use the WHM transfer tool to copy packages across servers.)

Un-common issues (and fixes)

• Can’t create/transfer new user account because of existing user data, check for cruft left behind by old users/domains /usr/local/cpanel/3rdparty/bin/perl <(curl -s https://raw.githubusercontent.com/CpanelInc/tech-acctinfo/master/acctinfo) domain.com --cruft (replace “domain.com” with your domain)…many places will be listed, check all carefully…you many have many entries under many hostnames, etc.