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
- You have third-party kernel module(s) rpm installed
- CloudLinux Manager is not available after CloudLinux installation is completed.
- Recommended CloudLinux & control panel conversion order
- How do I install CloudLinux from scratch or convert existing server
- Integrating CloudLinux Components into a Custom Control Panel
- How do I convert my Linode CentOS server to CloudLinux?
Known Issues
- Bug in cagefs_enter utility leads to autoreponder issues on cPanel servers.
- Check service `cl_plus_sender` is present, enabled and active: FAILED
- SSA-agent high CPU usage
- WHM account terminating fail: No module named 'wpos_modify_user_hook'
- Yum update failed with 'rpmfusion-free-updates' repository enabled
- Kernel isn't booting once CloudLinux is installed on Dell Servers (AlmaLinux/RockyLinux)
FAQ
- From Which IP Will CloudLinux Staff Connect to my Server
- How to submit a CloudLinux feature request?
- How to upgrade CloudLinux 7 to CloudLinux 8?
- How to install the ionCube loader for alt-php?
- Is it safe to remove cldiag user?
- Can OOM killer be disabled in RHEL8-based kernels?
PHP Selector
- PHP Selector Integration with cPanel
- PHP Selector Integration with Plesk Panel
- PHP Selector Integration with DirectAdmin
- Missing MySQL extension or "MySQL_ND vs MySQL"
- perl: warning: Please check that your locale settings
- This extension requires the Microsoft ODBC Driver for SQL Server
Limits & LVE Stats
- Can not connect to database; MySQL-client libraries package not installed
- What is this message: WARNING: YOU ARE INSIDE LVE ?
- LVE enabled users have RAM usage on 100% and invalid values in meminfo
- A server does not collect data for CloudLinux plus: There is an error with signal SIGKILL. Error: [Errno 22] Invalid argument
- How to set unlimited resources for LVE limits?
- IO limits are not working on XFS filesystem.
CageFS
- PHP Unable to load dynamic library for all CageFS enabled users
- How to add third-party software into CageFS?
- Unable to save data to /var/cagefs/.../alt-phpXX/alt_php.ini (No such file or directory:...)
- How to hide subdirectories in CageFS
- How to install CageFS manually?
- ls /var/.cagefs'' returned non-zero exit status 1
Apache mod_lsapi PRO
- ReceiveAckHdr: timeout 300 is exceeded
- Unable to install mod_lsapi. CRIU dependency
- Conflicts with CRIU on lsapi install/update
- How to Setup PHP Selector on Plesk with mod_lsapi
- Apache mod_lsapi PRO FAQ
- Different PHP versions per directories using mod_lsapi
MySQL Governor
- MySQL Governor installation failed: Can't create test file XXXX.lower-test
- How to upgrade MySQL/MariaDB with Governor over multiple versions
- WordPress site health check: utf8mb4 requires a newer client library
- The dbtop shows "Can't connect to socket. Maybe governor is not started" error
- MySQL Governor installation fails with "ValueError: too many values to unpack (expected 2)"
- 'Kill slow SELECT queries' under MySQL Governor doesn't help
CloudLinux Kernels
- How to choose the correct kernel to boot on CloudLinux OS 7
- The "package kmod-lve requires kernel(bpf_trace_run12)" error during the yum update
- CloudLinux Manager shown: Reboot your system to update the kernel
- How to resolve a kernel crash on an HP server?
- Kernel: Event buffer is too long. Any new events are NOT being logged!
- How to enable/disable the Ptrace block?
Python/Ruby/NodeJS Selectors
- Installed CloudLinux component is indicated as not installed
- How to add an ALT-NodeJS version?
- PHP Selector: "No selector dir for user XXX"
- Node.js Selector is not available. Please, contact your hoster.
- How to fix "cagefs_enter: Unable to fork"
- Python Web Application on LiteSpeed server shows an error '503 Service Unavailable'
Yum & RPM Problems
- Can't update packages on CloudLinux OS 8
- Yum install of alt-python37-libs conflicts with file from package alt-python37-docopt
- [Errno 14] HTTPS Error 404 - Not Found Trying other mirror.
- When installing ea-apache24-mod_lsapi the "Cannot install the best candidate for the job" error occurs
- "Requires: rhn-client-tools" error while yum operations
- Failed to retrieve repodata/repomd.xml from cloudlinux-x86_64-server-* error was [Errno 14] HTTPS Error 404 - Not Found
Fighting High Load
- Understanding the High Load Average root cause
- Delay when loading website for the first time and high TTFB values when lsapi handler is used.
- How big your swap partition to be
- Load Averages is high on VMware VPS
- How do I install VMware-Tools/Improving server performance when on VMware
- High iowait and/or load average when APC enabled in PHP Selector
General Administration & non-CloudLinux Guides
- Unsupported returned from shimx64-cloudlinux.efi
- The SSL certificate failed verification
- http://mirror.de.leaseweb.net/epel [Errno 14] HTTP Error 404 - Not Found ]
- Failure to set MTU on CloudLinux installation
- No valid CloudLinux License Found: rhnreg_ks cannot import name 'idn_puny_to_unicode'
- Tuned profile "cloudlinux-default" pushed up power consumption and CPU temperature