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'tech_domains' array in /etc/cpanel/ea4/ea4-metainfo.json contained only invalid or empty entries Symptoms The following warning appears in the DNS Zone Manager and/or the cPanel File... /dev/mem,kmem,port is restricted Question Why do I receive the errors in my log? Apr  4 16:38:42 185 kernel: Lockdown: cpkeyclt:... /etc/resolv.conf reverts upon reboot: NetworkManager Symptoms After reboot, the contents of /etc/resolv.conf have changed or reverted to an old... A Netlink error occurred: Operation not supported. cpsrvd service unable to start Symptoms cPanel will not start, and running the restartsrv_cpsrvd script returns an error... After changing the Dedicated IP address on an account, the previous IP address cannot be removed from the server. Symptoms After changing the IP address of a cPanel account that has a Temporary domain, you find... Check for "yum-config-manager" error reported on systems using DNF always fails when locale is not "en_US" Symptoms When changes are needed to be made to the repositories on the server, cPanel uses the... CloudLinux Manager page returns 404 error Symptoms Accessing the CloudLinux Manager from within WHM returns a 404 error.   Cause  This... ConfigServer has been Shutdown Warning: Way to the Web Ltd. (the company behind ConfigServer) announced it has closed... Cpanel/Template/Plugin/Components.pm did not return a true value Symptoms WHM and/or cPanel are inaccessible with this error, or something similar: plugin error... Database server restart failed: timeout (196 seconds) reached! Question The database server is down and cannot be restarted and the following is displayed when... Does cPanel support zfs? Question Does cPanel support ZFS?   Answer cPanel does not support ZFS. Please consider... EA-Podman fails to create a container with the error "Must have X ports" ymptoms When creating a container using ea-podman, the container fails to be created with an... EL7 Packages causing WHM error: Attempt to call undefined import method with arguments Symptoms WHM reports the following error on all pages: [2026-01-17 18:41:48 +0700] warn... Error after Python upgrade: ModuleNotFoundError: No module named 'dnf' Ticket Subject(s) Symptoms When accessing the "EasyApache 4" interface, you will encounter the... Error from Cron regarding failed CSF update after August 31, 2025 Please note that Way to the Web Ltd. (the company behind ConfigServer) has announced it will... Error: The WebSocket handshake failed: cPanel Server operation timed out (polkit.service) Symptoms When accessing the Terminal emulator from within a cPanel account or WHM, you receive... Firewall rules that are converted via iptables-nft cause an error when loading the nftables service Please note that Way to the Web Ltd. (the company behind ConfigServer) has announced it will... Hostname resets on OVH server Symptoms The hostname on an OVH server resets at reboot.   Description The hostname reset is... Hostname resets on restart on Google Cloud Platform (AlmaLinux) How can I clear login sessions used by cPanel? Question How can I clear login sessions used by cPanel?   Answer Session files for cPanel,... How do I change the root user's password via the command line? Question How do I change the root user's password via the command line?   Answer Log... How do I fix missing or corrupted cPanel packages? Question How do I fix missing or corrupted cPanel packages?   Answer You can use the... How do I use IP Migration Wizard to transfer sites to a different IP on the server? Question How do I use IP Migration Wizard to transfer sites to a different IP on the server?... How do I use the traceroute command? Question How do I use the traceroute command?   Answer Traceroute is a utility that shows the... How to SSH using PuTTY with a public key Introduction PuTTY is a free application that allows Windows users to access Linux servers via... How to block a port in csf Note: Way to the Web Ltd. (the company behind ConfigServer) has closed permanently on August 31,... How to configure disk usage alerts Question How do you configure disk usage alerts?   Answer Log in to WHM as the root user... How to customize your favorite's list in WHM via the command line. Introduction The Favorites section of the WHM Home interface provides immediate access to the... How to edit a server's resolver configuration from the command line Question How do you edit the server's resolver configuration from the command line?   Answer... How to enable IPv6 on your server Introduction Before you can add IPv6 addresses to your server using the WHM interface, the... How to enable systat logging on an Ubuntu server Introduction Sometimes sysstat will be installed, but not collecting data. Running the sar... How to install rsyslog on Almalinux and CloudLinux 8+ Introduction The rsyslog package is not installed by default on some systems. This prevents the... How would I block connections on a per-domain basis from specific locations. Introduction Sometimes, website owners need to restrict website access based on geographical... ImageMagick pecl package missing HEIC support when installed for ea-php versions. Symptoms The version of the ImageMagick Pecl package that can be installed via the WHM's module... Main shared IPv6 is not being used for the default outbound routes Symptoms When making an outbound connection, your server uses an additional IPv6 address... Manually revoking authorized public SSH keys via the command line Introduction To revoke access for a public SSH key,  you only need to open the... Multiple cpdavd instances with high load usage. Symptoms Some customers have noticed multiple cpdavd children consuming 98% of the CPU and... Munin service unable to start after v132 update on servers with IPv6 disabled. Symptoms After updating from v130 to v132 the Munin service no longer starts on my server with... Non-English Locales are missing translatable strings Symptoms cPanel UI translations are incomplete when using non-English locales.   Description... Opting out of cPanel Analytics does not disable the Analytics cron job Symptoms After opting out of cPanel Analytics, the cron job defined in the following file... Unable to install the "DBD::mysql" Perl module Symptoms Attempting to install the "DBD::mysql" Perl module in WHM fails with the following.... Uprading to Apache 2.4.63 break the htaccess redirects that contains unencoded "?" (%3F) Symptoms After upgrading to Apache 2.4.63 the htaccess redirects that contain unencoded "?" will... Viewing and Removing Authorized Public Keys via WHM Introduction The following article explains how you can deauthorize a key via WHM's "Manage... Viewing certain restores via the "Review Transfers and Restores" tool in WHM fails to load the page Symptoms When reviewing certain account restores using the "Review Transfers and Restores" tool... WHM Server information doesn't return physical disk on Ubuntu Symptoms Server information doesn't contain the Physical Disk information on Ubuntu... WHM login stuck on Initial Setup Wizard Symptoms When logging in WHM with root, the initial setup wizard will hang and not allow you to... WHM won't load, logs: Can't locate object method "get_driver_name" via package "Cpanel::Config::ConfigObj::Driver::ConfigServercsf::META" at /usr/local/cpanel/Cpanel/Config/ConfigObj.pm line 185. Symptoms WHM won't load with the following error: undef error - Can't locate object method... What is the cPanel main IP? Question What is a cPanel server's main IP?   Answer The network configuration of the... Why can't I see the "Server Monitoring (Powered by 360 Monitoring)" plugin on my server? Symptoms The "Server Monitoring (Powered by 360 Monitoring)" plugin does not appear in WHM even... Why do my automatically configured nameservers, such as ns.1-2-3-4.cprapid.com, not resolve? Question When the server was setup, it automatically added nameservers such as... Why is the "Submit a Support Request" interface missing in cPanel 118 and later? Question Why is the "Submit a Support Request" interface missing in cPanel 118 and later?... Yum issue with centos7-els and 401 Unauthorized Symptoms Accessing the MultiPHP Manager, or using yum to perform a package operation, returns a... autorepair Failed to create gpg object Symptoms When attempting to run the autorepair script to provide cPanel Support access, you may... cPanel Server Information displays chkservd error after reboot Symptoms For a short time after rebooting the server, the Server Information page in cPanel will... cPstrict is being loaded from an unsupported perl error on cPanel & WHM version 126. Symptoms The following error is seen on cPanel & WHM version 126 via the cPanel error_log:... gather_update_log_stats installs ea-nginx when cpanel-analytics version 1.4.57-8.8.1 is installed Symptoms When cpanel-analytics is upgraded to version 1.4.57-8.8.1, ea-nginx will be installed... libc segfault when restarting Dovecot after update to cPanel 132 Symptoms After updating to cPanel 132, the following error is logged in /var/log/messages when... sar: Current sysstat version cannot read the format of this file Symptoms When attempting to run sar to check the sysstat logs, you encounter a message similar... undef error - “/var/cpanel/plugins/components/homebanner.json” is empty Symptoms I get an error like the following when trying to access WHM. undef error -... cron is not accessible to users in Ubuntu on the command line Symptoms When logged into the command line (SSH) as a cPanel user, attempts to edit the user's...
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