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
- Wizard broken: TypeError: 'NoneType' object is not iterable
- How to install Cloudlinux on Ubuntu
- How to upgrade CloudLinux from Shared to Shared Pro?
- Does CloudLinux Subsystem for Ubuntu support DirectAdmin?
- You have third-party kernel module(s) rpm installed
- CloudLinux Manager is not available after CloudLinux installation is completed.
Known Issues
- Fix duplicated packages problem
- CloudLinux 9 + cPanel support
- Full SQL query is not visible during X-Ray tracking.
- Unable to use ClamAV on DirectAdmin servers
- /opt/alt/curlssl11/usr/lib64/libcurl.so.4: undefined symbol: nghttp2_session_callbacks_set_error_callback
- Bug in cagefs_enter utility leads to autoreponder issues on cPanel servers.
FAQ
- 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 SSH access form?
- Can I downgrade from CloudLinux 9 to CloudLinux 8 or do I have to re-install the server?
- When will be ALT-PHP 8.3 available?
- What control panels support CloudLinux?
- What is CageFS?
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"
- Error when enabling ioncubeloader
- Cannot manage PHP versions when CageFS is disabled
Limits & LVE Stats
- FAILED: Some user(s) on server has low PMEM LVE limit
- LVE limits default values and recommended values
- lvestats failed to start: undefined symbol
- How to backup and rebuild LVE database
- LVE error: error: 'NoneType' object has no attribute 'initialize'
- Can not connect to database; MySQL-client libraries package not installed
CageFS
- Website contact form is not working
- Old php session files are not being cleared
- CageFS mount point does not exists
- The "CageFS jail error Failed to set permissions to... (Operation not permitted): Operation not permitted (1)" warning
- Error extracting /home/username/backups/backup/home.tar.zst : /bin/tar: ./.cagefs/tmp/mysql.sock: Cannot create symlink to ‘/var/lib/mysql/mysql.sock’: Permission denied
- Warning: session_start(): open(/var/cpanel/php/sessions/alt-php* failed: No such file or directory
Apache mod_lsapi PRO
- The handler for ea-PHP 8.2 in /etc/container/php.handler is missing
- Unable to install mode_lsapi due to mod_ruid2
- "mod_lsapi" broken after update: Connect to backend failed: connect to lsphp failed: 110
- Unable to install mod_lsapi - DirectAdmin
- How to improve lsapi performance
- Invalid php.ini is used for Plesk lsapi domains
MySQL Governor
- Yum update error: file /usr/lib64/mysql/libmysqlclient.so.18.0.0 conflicts
- MySQL Governor on remote MySQL server
- mysql-governor.xml read/parse error: Document is empty, line 1, column 1
- How to set MySQL Governor limits for a particular package via CLI
- FileExistsError: [Errno 17] File exists: '/etc/my.cnf.d.govprev'
- Cron /usr/bin/flock -n /var/run/cloudlinux_processpaneluser.cronlock /usr/sbin/processpaneluserspackages
CloudLinux Kernels
- How to choose the correct kernel to boot on CloudLinux OS 7
- CVE-2022-40982 Intel Downfall
- Unable to load lve module with debug kernel
- LVE load fail: could not insert 'kmodlve': Cannot allocate memory
- Is a hybrid kernel installed by default on a CloudLinux OS 7 server?
- The "Reboot your system to update the kernel" after update and restart the server for CloudLinux OS 8.7
Python/Ruby/NodeJS Selectors
- EXCEPTION: parent directory is world writable, FileUtils#remove_entry_secure does not work; abort: "/tmp/passenger.h8oxja" (parent directory mode 40767) (ArgumentError)
- [ERR_REQUIRE_ESM]: Must use import to load ES Module
- The received data is wrong... fork: retry: Resource temporarily unavailable
- Python selector: Unexpected issue(s) happened during importing python applications
- Unable To Deploy Node.js Application - Error: Cannot find module 'semver'.
- Installed CloudLinux component is indicated as not installed
AccelerateWP
- AccelerateWP keeps on loading
- How to enable AccelerateWP CDN via CLI?
- AccelerateWP "Redis Object Cache" plugin is not installed
- SmartAdvice is still present on the WordPress dashboard when AccelerateWP disabled
- How to activate AccelerateWP via CLI
- WHM account terminating fail: No module named 'wpos_modify_user_hook'
Yum & RPM Problems
- 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
- kernel(oops_in_progress) = 0x299b2b01 is needed by (installed) kmod-lve
- CloudLinux 8 repository is being used in spite CloudLinux 7
- How to remove outdated kernel on CloudLinux 8
- package kmod-lve requires kernel(bpf_trace_run12) = 0xa1d22df3, but none of the providers can be installed
- Error: Package requires: alt-php-internal-common
General Administration & non-CloudLinux Guides
- CloudLinux Manager Blank Page in DirectAdmin
- How to roll back installed package(s) update?
- alt-php-internal-firebird update error
- CloudLinux ELevate project
- yum shows "package alt-libgd requires libavif.so.14()(64bit)" errors
- AccelerateWP getpwuid(): uid 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