In this category, you will find CloudLinux OS-related guides, FAQs, setup instructions, and troubleshooting articles written by our Support Engineers. Those will help you to tackle the most frequent problems, answer the most frequent questions, and explain non-trivial setups. Visit our Documentation page for administration guides and manuals where all our features are described in detail: https://docs.cloudlinux.com/
Getting Started
- Hosting accounts have exceeded the allowed limit
- ERROR: SSL handshake to <RetryServer for xmlrpc.cln.cloudlinux.com/XMLRPC/> failed
- Failed to download metadata for repo 'cloudlinux-x86_64-server-8': Cannot download repomd.xml
- Does webuzo control panel support Cloudlinux OS?
- modprobe: ERROR: could not insert 'kmodlve': Invalid argument / cloudlinux-default profile does not switch to -cgv1 after tuned-profiles-cloudlinux update
- Vulnerabilities CVE-2025-6018 and CVE-2025-6019
Known Issues
- CVE-2026-31431 Impact on CloudLinux Systems & KernelCare patching
- yum: Problem: package alt-python27-cllib conflicts with rhn-client-tools < 1:2.8.16-14
- Common `cldiag --all` Errors & Fixes
- FAILED: Details: hidepid protection disabled
- CloudLinux OS 8: EA4 ea-apache24 update for CVE-2026-49975 is not yet available in CloudLinux repositories
- CIFSwitch vulnerability exposure check and mitigation on CloudLinux
FAQ
- How to Install CloudLinux 8/9/10 and migrate users along with CloudLinux settings?
- How to prepare your server(s) before ticket creation and provide replication steps for the Support Team
- How to authenticate your server for Support Team and use the Secure Access Form?
- How do I uninstall CloudLinux or its features?
- CloudLinux Mirror System: What Is Changing and How to Migrate
- How to create Zendesk account for support requests
PHP Selector
- Per Domain Settings tab is missing or does nothing when MultiPHP Manager is disabled
- INTL extension is broken for ea-php
- [Errno 2] No such file or directory: '/etc/cl.selector.conf.d/phpextdesc.txt'
- Your PHP installation appears to be missing the MySQL extension which is required by WordPress.
- PHP Selector Integration with cPanel
- PHP Selector Integration with Plesk Panel
Limits & LVE Stats
- LVE limits default values and recommended values
- Display CloudLinux Inodes Count in cPanel
- Incorrect number of users shown in LVE Manager
- Server is not running, Use 'service lvestats start' command to start it
- What are web-interface-resource-limiting-modes?
- CageFS not supported by kernel
CageFS
- The CageFS plugin is no longer available
- CageFS can't start - Error: current running kernel is NOT supported
- Is CageFS Compatible with Imunify360?
- FAILED: There are missing mount points: /usr/local/cpanel/htdocs (cPanel v134)
- Does mount /dev/fd inside CageFS has security implications?
- CageFS plugin error: Deprecated: strstr Passing null to parameter #1 ($haystack)
Apache mod_lsapi PRO
- 503 after server reboot
- High Load/Hanging Cleanup Processes After liblsapi/mod_lsapi 1.1.85 Upgrade
- Additional .ini files parsed: (none) on the php --ini
- Error with mod-lsapi version 1.1-81 on DirectAdmin servers.
- mod-lsapi 1.1-81 on DirectAdmin server: undefined symbol: lscapi_set_criu_socket_path
- Cannot load modules/mod_lsapi.so into server: /etc/httpd/modules/mod_lsapi.so: undefined symbol: lscapi_create
MySQL Governor
- MySQL warning: get_log_ex_properties
- dbtop shows wrong values. Governor library version mismatch
- Add MySQL 8.4 for Governor
- Does MySQL Governor support MariaDB 11.4?
- MySQL Governor malfunction in CloudLinux Dashboard
- MySQL 8.0.38 won't start
CloudLinux Kernels
- How to configure kdump to save vmcore on remote server via ssh
- There are no kernels in the Grub2 menu during the reboot
- How to choose the correct kernel to boot on CloudLinux OS
- CloudLinux Manager shows a kernel error after reboot on CloudLinux 9.7 (5.14.0-611.49.2.el9_7)
- Expected High Load Average on Cloudlinux OS with kmod-lve v. 2.1-56+
- Server panic installation of kmodlve or LVE packages on CloudLinux 10 | Cloudlinux conversion
Python/Ruby/NodeJS Selectors
- How to Install Python Selector cPanel
- NodeJS Selector not Working with an Error "Can't acquire lock for app"
- Error: Transaction test error: file /opt/alt/alt-nodejs2X/root/usr/lib/node_modules/npm/node_modules/node-gyp from install of alt-nodejs2X-npm-10
- Setup Ruby Applications keeps loading and produces Error 500
- NodeJS / Python Selector error | BlockingIOError: [Errno 11] Resource temporarily unavailable
- Error in Python application - IndexError: string index out of range
AccelerateWP
- AccelerateWP reseller support
- Image optimization is temporarily paused. Your site has reached the monthly usage limit.
- How to enable image optimization in Dashboard?
- Redis extension is not loaded for selected php version
- AccelerateWP warning: Please, disable or remove "snuffleupagus" PHP extension.
- Cannot load module 'redis' because required module 'msgpack' is not loaded
ELevate project
- You have MySQL 5.7 installed. This version is not available for CloudLinux 8.
- Elevate error: cache-only enabled but no cache for 'cloudlinux-x86_64-server-8'
- Elevate failed during stage 4: Unable to find a match: ea-php56-php-suhosin
- Failed to create directory /var/lib/leapp/el8userspace//sys/fs/selinux: Read-only file system
- Elevate CL7 with hybrid kernel error
- Upgrade from CloudLinux 8 to CloudLinux 9 using Elevate
X-Ray
- Full SQL query is not visible during X-Ray tracking.
- CL Shared/Legacy edition is not supported by X-Ray
- How to uninstall X-ray
- How to cleanup X-Ray tasks that cannot be removed from UI
- Cannot enable X-Ray for End-Users - Infinite loop
- Getting a Duplicate URL while adding a new task in the X-Ray panel
Centralized Monitoring
- Centralized Monitoring Error: Server linking is forbidden
- How does Centralized Monitoring works?
- Centralized Monitoring for Reseller's Users
- FAILED: Service is not active. The server can't collect and send statistics to Centralized Monitoring if service cl_node_exporter isn't present, enabled and active.
- Centralized Monitoring is not displaying the statistics
Yum & RPM Problems
- Error: Failed to download metadata for repo 'cloudlinux-x86_64-server-8': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
- File /usr/lib64/mysql/libmysqlclient.so.18.0.0 from install of cl-MariaDB103-libs-10.3.39-3.el7.cloudlinux.x86_64 conflicts with file from package mysqlclient18-compat-10.1.28-1.el7.cloudlinux.x86_64
- Yum/dnf update fails with “nothing provides criu-lve” and “nothing provides liblsapi” for ea-apache24-mod_lsapi
- Yum/dnf update fails with "Cannot find a valid baseurl for repo: cloudlinux-x86_64-server-9" on CloudLinux 9
- Yum/dnf update fails with HTTP 404 from AlmaLinux 9.7 repositories on CloudLinux 9
- Issues with downloading metadata for Cloudlinux repository in EU region
General Administration & non-CloudLinux Guides
- nothing provides libraw_r.so.23()(64bit) needed by ImageMagick-libs-6.9.12.93-2.el9.x86_64 from epel
- How to enable or disable yum/dnf repo
- How to decode/get the actual Cloudlinux OS license key from Plesk license
- CloudLinux Manager Blank Page in DirectAdmin
- Unable to install CloudLinux due to the "You have users in the group 'clsudoers', 'clsupergid' or both." error
- How to install redis on CloudLinux 10
Fighting High Load
Registration Cases
- CloudLinux Solo to Admin - The license you are trying to register with allows a maximum of X hosting accounts
- Server license check failed: _cffi_backend.cpython-36m-x86_64-linux-gnu.so: invalid ELF header
- Error: License not found for key/IP!
- rhn-plugin: Network error: ECONNRESET
- The "License not found for key/IP" error during the CloudLinux license activation.
- Registration Error: "Too many systems registered using this registration token"