cPanel8 min read
How to Install JetBackup 5 on a cPanel Server
Install JetBackup 5 on cPanel & WHM, send backups to an SSH backup account, and set up the first backup job, with the mistakes to avoid on a real server.
MEET THE AUTHOR
Tharanga
Author of the SupportClients technical guide archive. Topics include Linux administration, cPanel, hosting, storage, and troubleshooting.
cPanel5 min read
How to Uninstall and Remove Acronis Backup from a cPanel Server
Fully remove the Acronis Backup plugin and agent from cPanel & WHM, then clean up the leftover service, mount, firewall ports and yum repo.
Linux1 min read
How to Check Disk Space in Linux
See how much disk space is free on a Linux server and find the folders using the most space, with two beginner-friendly commands: df and du.
cPanel10 min read
How to Deploy a Website to cPanel with Git and GitHub Actions (Beginner's Guide)
Step by step: put your site in Git, push it to a private GitHub repo, and deploy it to cPanel over SFTP with a GitHub Actions workflow and an SSH deploy key.
Linux6 min read
How to Check SSD Health in Linux
Check SATA and NVMe SSD health on a Linux server with smartctl, nvme-cli and mdadm: wear, temperature, media errors, kernel messages and RAID status.
cPanel4 min read
How to Install CSF Firewall on cPanel and Linux Servers
Install CSF firewall in 2026: cPanel CSF on cPanel servers, the Aetherinox fork on other Linux servers, and how to replace the old ConfigServer version.
Linux6 min read
How to Replace a Failed Disk in Linux Software RAID1 (mdadm)
Step-by-step: find the failed disk in an mdadm RAID1 mirror, copy the partition table to the new disk, rebuild the array and reinstall GRUB.
Shoutcast3 min read
How to Get Your Radio Station Listed in the Shoutcast Directory
Get your internet radio station listed in the Shoutcast directory: get an authhash from Shoutcast and add it to your DNAS server. Updated for 2026.
cPanel4 min read
How to Fix the “mysql has failed” Error on a cPanel Server
cPanel says mysql has failed and will not recover? Find the cause in the MySQL error log and fix the common ones: full disk, memory, crashes and bad updates.
AlmaLinux3 min read
How to Fix “GPG check FAILED” on AlmaLinux
dnf or yum says GPG check FAILED on AlmaLinux 8? The signing key changed in 2024. Import the new AlmaLinux key with one command and updates work again.
Windows4 min read
How to Run an MTR Test on Windows (WinMTR)
Run an MTR test on Windows with the free WinMTR tool, read the results correctly, and save a report to send to your hosting provider or ISP.
cPanel4 min read
How to Install and Update the Acronis Backup Plugin on cPanel
Install the Acronis Backup plugin on cPanel & WHM, update it to fix the actively exploited CVE-2026-87886, and fix a plugin that is missing in cPanel.
CentovaCast3 min read
How to Install Icecast-KH on a Centova Cast Server
Build the latest Icecast-KH (kh22) from source on Debian or Ubuntu and switch Centova Cast v3 to it with one command. Includes how to check and roll back.
Linux3 min read
How to Install Webmin on Debian, Ubuntu and AlmaLinux
Install Webmin with its official repository script on Debian, Ubuntu, AlmaLinux or Rocky Linux, open port 10000, log in, and fix the NO_PUBKEY update error.
CentovaCast3 min read
How to Fix Centova Cast Liquidsoap AutoDJ Errors
Centova Cast says Liquidsoap exited immediately after startup, or AutoDJ mount point settings will not save? Check the AutoDJ log and re-register Liquidsoap.
cPanel3 min read
How to Fix “Server sent charset (255) unknown to the client” in MySQL
Websites show “Server sent charset (255) unknown to the client” after moving to MySQL 8? Upgrade PHP, or set a utf8mb4 default in my.cnf for old PHP sites.
cPanel3 min read
How to Undo a cPanel Live Transfer on the Source Server
Reverse a cPanel Transfer Tool Live Transfer: unsuspend the account, remove service proxies, .htaccess blocks and MX redirects, and point DNS back.
iPhone3 min read
How to Share Wi-Fi from an iPhone (to iPhone, Mac or Android)
Share your Wi-Fi from an iPhone without typing the password: tap Share Password for nearby Apple devices, or show a QR code that Android phones can scan.
Network4 min read
How to Change Your Router’s Wi-Fi Password
Change your Wi-Fi password in a few minutes: find your router's address, log in, set a strong password with WPA3 or WPA2, and reconnect your devices.
cPanel3 min read
How to Fix “message has lines too long for transport” on cPanel
Emails bounce with “message has lines too long for transport”? Raise Exim's line length limit in WHM, and add it to smarthost transports such as MailChannels.
Windows4 min read
How to Upgrade from Windows 10 to Windows 11 for Free
Windows 10 support has ended. Check if your PC can run Windows 11, then upgrade for free through Windows Update or the Installation Assistant, keeping your files.
Linux4 min read
How to Change the SSH Port on Linux Without Locking Yourself Out
Change the SSH port on AlmaLinux, Rocky Linux, Debian or Ubuntu in a safe order: open the firewall and SELinux first, restart SSH, and test before logging out.
cPanel5 min read
How to Protect Your Website from Clickjacking (X-Frame-Options and CSP)
Stop other sites from loading your pages in a hidden iframe. Add the CSP frame-ancestors directive and X-Frame-Options with .htaccess, Nginx, WordPress or Cloudflare.
cPanel5 min read
How to Set Up MailChannels Outbound Filtering on a cPanel Server
Send a cPanel server's outgoing email through MailChannels: install the WHM plugin, add your API key and SMTP password, set SPF and Domain Lockdown, and test.
cPanel4 min read
How to Fix Email Accounts Missing from cPanel
Email accounts vanished from cPanel but the mail is still on the server? Restore the domain's shadow and passwd files, rebuild the cache, and reset passwords.
cPanel3 min read
How to Install Softaculous on a cPanel Server
Install the Softaculous auto-installer on cPanel & WHM: enable ionCube, run the installer, open it in WHM, and fix common problems such as firewall blocks.
cPanel3 min read
How to Install Imunify360 on a cPanel Server
Install Imunify360 on cPanel with a license key or an IP-based license, check it in WHM, and know what it changes: cPHulk, fail2ban and CSF.
Linux3 min read
How to Fix “ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66”
Kernel log flooded with ACPI AE_AML_BUFFER_LIMIT errors from _PMM on HP servers? It's the acpi_power_meter driver. Unload it and blacklist it to stop the noise.
cPanel4 min read
How to Fix “None of the authentication methods supported by this client are supported by your server”
Outlook error 0x800CCC80 when sending email? Turn on SMTP authentication and set encryption to SSL/TLS on port 465 or STARTTLS on 587. Settings for cPanel mail.
cPanel4 min read
How to Add a Backup Drive to a cPanel Server
Add a second disk to a cPanel server on AlmaLinux, CloudLinux or Ubuntu: partition it, format it, mount it at /backup through fstab, and point WHM backups at it.
Linux4 min read
How to Change the Hostname on Linux and cPanel Servers
Change a server's hostname with hostnamectl on AlmaLinux, Debian or Ubuntu, or with WHM's Change Hostname or set_hostname on cPanel, and make it stick on cloud VPSs.
cPanel5 min read
How to Convert an AlmaLinux, Rocky Linux or Ubuntu Server to CloudLinux OS
Convert a server to CloudLinux OS in place: cldeploy for AlmaLinux 8–10 and Rocky Linux 8–9, the Ubuntu script, and what to check after.
cPanel4 min read
How to Install cPanel & WHM on AlmaLinux or Ubuntu
Install cPanel & WHM on a fresh AlmaLinux 8–10, CloudLinux or Ubuntu 24.04 server: requirements, hostname, firewall, the install command, and first login.
cPanel3 min read
How to Disable MySQL Strict Mode on a cPanel Server
An old app fails with “Incorrect integer value” or “Data too long”? Remove STRICT_TRANS_TABLES from sql_mode in /etc/my.cnf on MySQL or MariaDB, safely.
Linux3 min read
How to Clean Up a Full /boot Partition on Linux
/boot at 100% and updates failing? Remove old kernels safely with dnf on AlmaLinux and CloudLinux, or apt on Ubuntu, and stop it from filling up again.
cPanel5 min read
How to Install LiteSpeed Web Server on cPanel
Replace Apache with LiteSpeed on a cPanel server: prepare, run the get.litespeed.sh installer, test alongside Apache, switch over, enable LSCache, and keep it updated.
cPanel4 min read
How to Enable ModSecurity with the OWASP Core Rule Set in WHM
Protect cPanel websites with ModSecurity and the OWASP Core Rule Set in WHM, handle false positives, and remove the unmaintained Comodo rules.
cPanel5 min read
How to Stop xmlrpc.php and wp-login.php Attacks on WordPress
Brute-force bots hammering xmlrpc.php and wp-login.php? Block them at Cloudflare with free WAF and rate limiting rules, or on a cPanel server with CSF.