Tag: cloudlinux

Set unlimited resources for a user in cloudlinux
To set unlimited resources for a user in cloudlinux, run the following command:
```
lvectl set-user user --unlimited
```
Back to cloudlinux
January 28, 2024

Connect to backend failed: connect to lsphp failed: 110

On a CloudLinux Server, websites stopped working with the error message “Service Unavailable”. On checking error_log in /usr/local/apache/logs, found following error message

[Fri Jul 09 15:32:37.884950 2021] [lsapi:error] [pid 1639593:tid 47853204383488] [client 207.46.13.54:46915] mod_lsapi: [host ronnie.serverok.in] [req GET / HTTP/1.1] Connect to backend failed: connect to lsphp failed: 110

The problem was due to the server got booted using the default CentOS kernel instead of CloudLinux Kernel.

[root@server ~]# uname -a
Linux server.serverok.in 3.10.0-1062.9.1.el7.x86_64 #1 SMP Thu May 27 10:10:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
[root@server ~]#

If you were using Cloudlinux kernel, “uname -a” command will show kernel with “lve” in the name. Example 3.10.0-962.3.2.lve1.5.56.el7.x86_64

To see the list of kernels available, run

awk -F\' '$1=="menuentry " {print i++ " =  "$2}' /etc/grub2.cfg

Example

[root@server ~]#  awk -F\' '$1=="menuentry " {print i++ " =  "$2}' /etc/grub2.cfg
0 =  CloudLinux (3.10.0-962.3.2.lve1.5.56.el7.x86_64) 7.9 (Boris Yegorov)
1 =  CloudLinux (3.10.0-1062.9.1.el7.x86_64) 7.9 (Boris Yegorov)
2 =  CloudLinux (3.10.0-962.3.2.lve1.5.27.el7.x86_64) 7.9 (Boris Yegorov)
3 =  CloudLinux (0-rescue-21361cf887984f57a840ce7ea6a3f75c) 7.9 (Boris Yegorov)
[root@server ~]#

To set default kernel, run

grub2-set-default 0

This will set kernel entry to the first entry.

Verify default kernel with

grub2-editenv list

Example

[root@server ~]# grub2-editenv list
saved_entry=0
[root@server ~]#

Reboot the server with

reboot

Once rebooted, verify the server is booted with CloudLinux kernel.

July 10, 2021

Red Hat Killing CentOS Linux, Fight for CentOS clone

RedHat, parent company of CentOS Linux announce it will stop supporting CentOS 8, the latest version of CentOS. CentOS is build from the source code RHEL, making a free version of stable and well-tested enterprise ready RHEL Linux. CentOS 7 will keep getting security updates until it reaches End Of Life June 30th, 2024. For Red Hat, maintaining CentOS wont help with their business. Now they don’t need to maintain CentOS, this will force many users to pay for Red Hat Enterprise Linux (RHEL).

The new version of CentOS known as CentOS Stream is a rolling release. It will be used as a staging version of RHEL. Red Hat expect CentOS Stream to be stable and allow community participation as users will be able to contribute to CentOS Steam. With CentOS, community contribution was limited because it was a copy of RHEL.

CentOS is populary used in web hosting servers as cpanel only supposed RHEL based Linux. With death of CentOS 8, cpanel have announced they will accelerate investment in development efforts to support additional operating systems. cPanel will suport Ubuntu LTS and expect to deliver a production-ready version in late 2021. After Ubuntu LTS, they will look into supporting Debian. Ubuntu is very popular with Cloud Servers as it come with latest software compared to CentOS. With many developers already using Ubuntu on their Desktop, supporting Ubuntu is wise decision by cpanel.

With CentOS 8 unexpected demise, many users will be looking for alternative OS. This opens up market for next CentOS clone.

Rocky Linux

CentOS co-founder, Gregory Kurtzer announced he will be releasing his own Red Hat Enterprise Linux (RHEL) replacement Rocky Linux. No ETA on release date yet.

https://rockylinux.org

You can join discussion on their reddit.com/r/RockyLinux/

Project Lenix

Igor Seletskiy, CloudLinux CEO and founder said they will make their own RHEL patch to patch compatible Open Source Linux – Project Lenix.

CloudLinux is a CentOS based commerical Linux, that is popular amoung web hosting providers as it allow resource limit per user and user isolation with CageFS. They also have support for kernel update with out reboot.

CloudLinux will be investing more than a million dollar into Project Lenix. CentOS 8 users will be able to convert into Project Lenix or CloudLinux easily with out reboot. In the announcement Igor Seletskiy said “Red Hat’s announcement has left users looking for an alternative with all that CentOS provides and without the disruption of having to move to alternative distributions. We promise to dedicate the resources required to Project Lenix that will ensure impartiality and a not-for-profit community initiative. CloudLinux already has the assets, infrastructure, and experience to carry out the mission, and we promise to be open about the process of developing Project Lenix”.

See CentOS

December 17, 2020
Cpanel CloudLinux set all users to use alt-php
If your cpanel server have cloudlinux + PHP Selector installed, you need to set all site to use inherit PHP before you can use PHP Selector.

This can be done in MultiPHP Manager or using command line
```
for i in $(cut -d: -f1 /etc/userdatadomains );do whmapi1 php_set_vhost_versions version=inherit vhost-0=$i;done
```
Tis command will set all web sites to use inherit PHP.

To set all site to use alt-PHP 7.4, run
```
selectorctl --change-to-version=7.4 --version=native
```
This will change PHP version for all sites that use native PHP to alt-PHP 7.4

Or you can use
```
cd /var/cpanel/users
ls -1 | awk '{ print "selectorctl --set-user-current=7.4 --user="$1 }' | sh
```
See cloudlinux
July 20, 2020

CageFS command not working for user

I have flvtool2 installed on the server. Path to binary file location was added in file /etc/cagefs/conf.d/vshare.cfg

[root@server22 ~]# cat /etc/cagefs/conf.d/vshare.cfg 
[vshare]
comment=vShare Youtube Clone Requirements
paths=/usr/bin/ffmpeg, /usr/bin/mencoder, /usr/bin/mplayer, /usr/bin/flvtool2, /usr/bin/lame, /usr/bin/yamdi, /usr/bin/qt-faststart, /usr/bin/MP4Box, /usr/bin/mediainfo, /usr/bin/neroAacEnc
[root@server22 ~]#

The binary program works properly when running as root, but it fail when switching to a user that use CageFS.

[root@server22 ~]# /usr/bin/flvtool2 -V
FLVTool2 1.0.6
[root@server22 ~]# su - socialwe
Last login: Thu May 28 06:33:33 UTC 2020 on pts/0
[socialwe@server22 ~]$ /usr/bin/flvtool2 -V
:1:in `require': cannot load such file -- rubygems.rb (LoadError)
from :1:in `'
[socialwe@server22 ~]$

The problem is fixed by editing file /etc/cagefs/cagefs.mp

vi /etc/cagefs/cagefs.mp

Add following lines

!/usr/lib64/ruby/
!/usr/share/rubygems/
!/usr/share/ruby/
!/usr/local/share/ruby/

Now remount cagefs with

cagefsctl --remount-all

See cagefs

May 31, 2020

CloudLinux PHP versions missing in PHP Selector
On a Cpanel server running CloudLinux, PHP Selector did not show all PHP versions.

I reinstalled EasyApache profile “CloudLinux + All PHP Options + OpCache + mod_lsapi”.

Even after installing EasyApache profile with all PHP versions, PHP 7.2 and PHP 7.4 was missing on this server.

To fix, the problem, i run
```
yum clean all
yum install -y alt-php72* 
yum install -y alt-php74*
yum install -y alt-php73*
```
March 16, 2020

CloudLinux PHP Selector on Cpanel Server

CloudLinux come with PHP Selector, this allow you to select differnt PHP versions. When you enable PHP selector, you should do the following.

1) EasyApache 4 and bild profile "CloudLinux + All PHP Options + OpCache + mod_lsapi".
2) MultiPHP Manager > System PHP Version set to any ea-php Version
3) MultiPHP Manager > System PHP-FPM click "Turn Off" button.
4) MultiPHP Manager > set INHERIT php version for domain.
5) Users PHP selector > choose needed alt-php version and modules.
6) WHM > Feature Manager > default => disable MultiPHP Manager and MultiPHP INI Editor.

Related Posts

Enable CloudLinux PHP lsapi
CloudLinux

December 13, 2019

KernelCare Unknown Kernel
On Cpanel server with KernelCare installed, i keep getting email

This is because the kernel is not yet supported by kernalcare. Since this kernal is provided by CloudLinux, you don’t have to worry. CloudLinux support said they do add support for KernelCare after 3 to 4 days of releasing new kernel.

To disable this warning, edit file
```
vi /etc/sysconfig/kcare/kcare.conf
```
Add
```
IGNORE_UNKNOWN_KERNEL=True
```
You can find more KernelCare options at

https://docs.kernelcare.com/config-options/

You can always check if KernelCare supports your current kernel here:

http://patches.kernelcare.com/

KernelCare update kernel using cronjob in /etc/cron.d/kcare-cron
```
[root@ok cron.d]# cat kcare-cron 
31 */4  * * * root /usr/bin/kcarectl -q --auto-update
[root@ok cron.d]# 
```
Related Posts

Install KernelCare
cloudlinux
October 6, 2019
imunify360
Imunify360 is paid version of Imunify. It provides additional protection like Web Application Firewall, Real-time protection, and automated malware cleaning.
Update license
```
REG_KEY=XXXXX imunify360-agent register
```
If you have IP based license, use
```
imunify360-agent register
```
July 20, 2019
Convert CentOS to CloudLinux
CloudLinux is a popular Linux distribution used by shared hosting providers. Some of the advantages of cloudlinux is users are running inside its own light weight virtual environment (CageFS). This will protect other sites on the server if one of the sites gets hacked. Also, CloudLinux allows you to set resource limits for each site, this way no one site can take down the entire web server.

You can find more details on cloudlinux at the official website

https://cloudlinux.com

If you are using CentOS on your server, you can easily convert it to CloudLInux.

To convert CentOS to CloudLinux, run
```
wget https://repo.cloudlinux.com/cloudlinux/sources/cln/cldeploy
sh cldeploy -k LICENSE_KEY_HERE
```
You can get an activation key by getting 30 day trail or purchasing a CloudLinux license.

If you have IP based license, run
```
wget https://repo.cloudlinux.com/cloudlinux/sources/cln/cldeploy
sh cldeploy -i
```
Once install completed, reboot the server to get the server booted with CloudLinux kernel.
```
reboot
```
See cloudlinux
February 27, 2019
cagefs mount points exists
On WHM > CloudLinux LVE Manager, i get following warning

Check cagefs mount points exists

There are missing mount points: [‘/usr/local/cpanel/whostmgr/docroot/cgi/softaculous’]

This error is due to softaculous was removed from server, but was not removed from cagefs mount points file.

To fix this error, edit file
```
vi /etc/cafefs/cagefs.mp
```
Remove the line
```
/usr/local/cpanel/whostmgr/docroot/cgi/softaculous
```
February 24, 2019
Enable CloudLinux PHP lsapi
CloudLinux provides high performance PHP module lsapi. It is a replacement for suphp available on cpanel servers. lsapi module is a based on LiteSpeed Technologies API for PHP.

To enable lsapi in CloudLinux Cpanel Server, go to
```
WHM > EasyApache 4
```
Provision profile
```
CloudLinux + All PHP Options + OpCache + mod_lsapi
```
Click “Provision” and wait until the software is updated.

Now you need to set lsapi as default PHP handler. To do this, go to
```
WHM > MultiPHP Manager
```
Click on “PHP Handlers”.

On Next page, you can set handler for each PHP versions.

You can set PHP handler to lsapi gloabally using following command
```
/usr/bin/switch_mod_lsapi --enable-global
```
Once you run it, all PHP version handlers will get chanegd to lsapi.

If you check PHP info, you will see Server API listed as LiteSpeed.

Back to lsapi
December 26, 2018

Tag: cloudlinux

Rocky Linux

Project Lenix