[jailed shell]mmap() failed: [12] Cannot allocate memory

Operating System & Version
CentOS release 6.10
cPanel & WHM Version
11.86.0.21

Luana Premoli

Well-Known Member
Oct 3, 2016
68
7
8
São Paulo/Brazil
cPanel Access Level
Root Administrator
Hi,

I am trying to install Laravel on a shared server using JailedShell access.

But the error below is shown:

mmap() failed: [12] Cannot allocate memory
mmap() failed: [12] Cannot allocate memory
Fatal error: Out of memory (allocated 809508864) (tried to allocate 4096 bytes) in phar:///home1/appbac20/hg/composer.phar/src/Composer/DependencyResolver/RuleSetGenerator.php on line 129



The commands executed are:

Bash:
[email protected] [~/hg]# php -v
PHP 7.2.31 (cli) (built: May 19 2020 20:03:28) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
    with the ionCube PHP Loader + ionCube24 v10.3.9, Copyright (c) 2002-2019, by ionCube Ltd.
[email protected] [~/hg]#
[email protected] [~/hg]#
[email protected] [~/hg]# curl -sS https://getcomposer.org/installer | php
All settings correct for using Composer
Downloading...

Composer (version 1.10.7) successfully installed to: /home1/appbac20/hg/composer.phar
Use it: php composer.phar

[email protected] [~/hg]#
[email protected] [~/hg]#
[email protected] [~/hg]#
[email protected] [~/hg]# php composer.phar | more
   ______
  / ____/___  ____ ___  ____  ____  ________  _____
 / /   / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/
/ /___/ /_/ / / / / / / /_/ / /_/ (__  )  __/ /
\____/\____/_/ /_/ /_/ .___/\____/____/\___/_/
                    /_/
Composer version 1.10.7 2020-06-03 10:03:56

Usage:
  command [options] [arguments]

Options:
  -h, --help                     Display this help message
  -q, --quiet                    Do not output any message
  -V, --version                  Display this application version
      --ansi                     Force ANSI output
      --no-ansi                  Disable ANSI output
  -n, --no-interaction           Do not ask any interactive question
      --profile                  Display timing and memory usage information
      --no-plugins               Whether to disable plugins.
  -d, --working-dir=WORKING-DIR  If specified, use the given directory as working directory.
      --no-cache                 Prevent use of the cache
  -v|vv|vvv, --verbose           Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands:
  about                Shows the short information about Composer.
  archive              Creates an archive of this composer package.
  browse               Opens the package's repository URL or homepage in your browser.
  cc                   Clears composer's internal package cache.
  check-platform-reqs  Check that platform requirements are satisfied.
  clear-cache          Clears composer's internal package cache.
  clearcache           Clears composer's internal package cache.
  config               Sets config options.
  create-project       Creates new project from a package into given directory.
  depends              Shows which packages cause the given package to be installed.
  diagnose             Diagnoses the system to identify common errors.
  dump-autoload        Dumps the autoloader.
  dumpautoload         Dumps the autoloader.
  exec                 Executes a vendored binary/script.
  fund                 Discover how to help fund the maintenance of your dependencies.
[email protected] [~/hg]# ^C
[email protected] [~/hg]# ^C
[email protected]4209.com.brr [~/hg]#
[email protected] [~/hg]#
[email protected] [~/hg]#
[email protected] [~/hg]#
[email protected] [~/hg]# pwd
/home1/appbac20/hg
[email protected] [~/hg]#
[email protected] [~/hg]# composer="/home1/appbac20/hg/composer.phar"
[email protected] [~/hg]#
[email protected] [~/hg]# php $composer create-project laravel/laravel
Creating a "laravel/laravel" project at "./laravel"
Installing laravel/laravel (v7.12.0)
  - Installing laravel/laravel (v7.12.0): Loading from cache
Created project in /home1/appbac20/hg/laravel
> @php -r "file_exists('.env') || copy('.env.example', '.env');"
Loading composer repositories with package information
Updating dependencies (including require-dev)

mmap() failed: [12] Cannot allocate memory

mmap() failed: [12] Cannot allocate memory

Fatal error: Out of memory (allocated 809508864) (tried to allocate 4096 bytes) in phar:///home1/appbac20/hg/composer.phar/src/Composer/DependencyResolver/RuleSetGenerator.php on line 129
[email protected] [~/hg]#

Trying to set unlimited memory_limit is shown error:

Bash:
[email protected] [~/hg]# php -d "memory_limit=-1" $composer create-project laravel/laravel
Creating a "laravel/laravel" project at "./laravel"
Installing laravel/laravel (v7.12.0)
  - Installing laravel/laravel (v7.12.0): Loading from cache
Created project in /home1/appbac20/hg/laravel
> @php -r "file_exists('.env') || copy('.env.example', '.env');"
Loading composer repositories with package information
Updating dependencies (including require-dev)

mmap() failed: [12] Cannot allocate memory

mmap() failed: [12] Cannot allocate memory

Fatal error: Out of memory (allocated 809508864) (tried to allocate 4096 bytes) in phar:///home1/appbac20/hg/composer.phar/src/Composer/DependencyResolver/RuleSetGenerator.php on line 129
[email protected] [~/hg]#
Data server Info:

Bash:
[[email protected] ~]# grep '' /etc/redhat-release /usr/local/cpanel/version /var/cpanel/envtype; uname -r
/etc/redhat-release:CentOS release 6.10 (Final)
/usr/local/cpanel/version:11.86.0.21
/var/cpanel/envtype:kvm
4.14.146-225.ELK.el6.x86_64
[[email protected] ~]#
 

cPanelLauren

Product Owner
Staff member
Nov 14, 2017
13,296
1,252
313
Houston
What is the global memory limit for the version of PHP you're running? You can find this at WHM>>Software>>MultiPHP INI Manger or via the CLI with the following (while logged in as the user):

Code:
php -i |grep memory_limit
You can change it with the whmapi1 function php_ini_set_directives function (ensure you're logged in as the root user)

Code:
whmapi1 php_ini_set_directives directive-1=memory_limit%3A128m version=ea-php74
replace the value for memory_limit to whatever you want to set it and ea-php74 with the ea-phpXX version you're using
 

Luana Premoli

Well-Known Member
Oct 3, 2016
68
7
8
São Paulo/Brazil
cPanel Access Level
Root Administrator
Hi,

Code:
[email protected][~]# php -i |grep memory_limit
memory_limit => 256M => 256M
appbac2[email protected] [~]#
I have another client on the same server where the result for "php -i | grep memory_limit" is the same and I can install it normally.

Code:
[email protected] [~/public_html/laravel]# composer="/home2/hgtransf/public_html/laravel/composer.phar"
[email protected] [~/public_html/laravel]# php $composer create-project laravel/laravel
Creating a "laravel/laravel" project at "./laravel"
Installing laravel/laravel (v7.12.0)
  - Installing laravel/laravel (v7.12.0): Downloading (100%)
Created project in /home2/hgtransf/public_html/laravel/laravel
> @php -r "file_exists('.env') || copy('.env.example', '.env');"
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 97 installs, 0 updates, 0 removals
  - Installing voku/portable-ascii (1.5.1): Downloading (100%)
  - Installing symfony/polyfill-ctype (v1.17.0): Downloading (100%)
  - Installing phpoption/phpoption (1.7.3): Downloading (100%)
  - Installing vlucas/phpdotenv (v4.1.6): Downloading (100%)
  - Installing symfony/css-selector (v5.1.0): Downloading (100%)
  - Installing tijsverkoyen/css-to-inline-styles (2.2.2): Downloading (100%)
  - Installing symfony/polyfill-php80 (v1.17.0): Downloading (100%)
  - Installing symfony/polyfill-mbstring (v1.17.0): Downloading (100%)
  - Installing symfony/var-dumper (v5.1.0): Downloading (100%)
  - Installing symfony/deprecation-contracts (v2.1.2): Downloading (100%)
  - Installing symfony/routing (v5.1.0): Downloading (100%)
  - Installing symfony/process (v5.1.0): Downloading (100%)
  - Installing symfony/polyfill-php72 (v1.17.0): Downloading (100%)
  - Installing symfony/polyfill-intl-idn (v1.17.0): Downloading (100%)
  - Installing symfony/mime (v5.1.0): Downloading (100%)
  - Installing psr/log (1.1.3): Downloading (100%)
  - Installing symfony/polyfill-php73 (v1.17.0): Downloading (100%)
  - Installing symfony/http-foundation (v5.1.0): Downloading (100%)
  - Installing psr/event-dispatcher (1.0.0): Downloading (100%)
  - Installing symfony/event-dispatcher-contracts (v2.1.2): Downloading (100%)
  - Installing symfony/event-dispatcher (v5.1.0): Downloading (100%)
  - Installing symfony/error-handler (v5.1.0): Downloading (100%)
  - Installing symfony/http-kernel (v5.1.0): Downloading (100%)
  - Installing symfony/finder (v5.1.0): Downloading (100%)
  - Installing symfony/polyfill-intl-normalizer (v1.17.0): Downloading (100%)
  - Installing symfony/polyfill-intl-grapheme (v1.17.0): Downloading (100%)
  - Installing symfony/string (v5.1.0): Downloading (100%)
  - Installing psr/container (1.0.0): Downloading (100%)
  - Installing symfony/service-contracts (v2.1.2): Downloading (100%)
  - Installing symfony/console (v5.1.0): Downloading (100%)
  - Installing symfony/polyfill-iconv (v1.17.0): Downloading (100%)
  - Installing doctrine/lexer (1.2.1): Downloading (100%)
  - Installing egulias/email-validator (2.1.17): Downloading (100%)
  - Installing swiftmailer/swiftmailer (v6.2.3): Downloading (100%)
  - Installing ramsey/collection (1.0.1): Downloading (100%)
  - Installing brick/math (0.8.15): Downloading (100%)
  - Installing ramsey/uuid (4.0.1): Downloading (100%)
  - Installing psr/simple-cache (1.0.1): Downloading (100%)
  - Installing opis/closure (3.5.3): Downloading (100%)
  - Installing symfony/translation-contracts (v2.1.2): Downloading (100%)
  - Installing symfony/translation (v5.1.0): Downloading (100%)
  - Installing nesbot/carbon (2.35.0): Downloading (100%)
  - Installing monolog/monolog (2.1.0): Downloading (100%)
  - Installing league/flysystem (1.0.69): Downloading (100%)
  - Installing league/commonmark (1.4.3): Downloading (100%)
  - Installing dragonmantank/cron-expression (v2.3.0): Downloading (100%)
  - Installing doctrine/inflector (2.0.3): Downloading (100%)
  - Installing laravel/framework (v7.14.1): Downloading (100%)
  - Installing fideloper/proxy (4.3.0): Downloading (100%)
  - Installing asm89/stack-cors (1.3.0): Downloading (100%)
  - Installing fruitcake/laravel-cors (v1.0.6): Downloading (100%)
  - Installing ralouphie/getallheaders (3.0.3): Downloading (100%)
  - Installing psr/http-message (1.0.1): Downloading (100%)
  - Installing guzzlehttp/psr7 (1.6.1): Downloading (100%)
  - Installing guzzlehttp/promises (v1.3.1): Downloading (100%)
  - Installing guzzlehttp/guzzle (6.5.4): Downloading (100%)
  - Installing dnoegel/php-xdg-base-dir (v0.1.1): Downloading (100%)
  - Installing nikic/php-parser (v4.5.0): Downloading (100%)
  - Installing psy/psysh (v0.10.4): Downloading (100%)
  - Installing laravel/tinker (v2.4.0): Downloading (100%)
  - Installing scrivo/highlight.php (v9.18.1.1): Downloading (100%)
  - Installing filp/whoops (2.7.2): Downloading (100%)
  - Installing facade/ignition-contracts (1.0.0): Downloading (100%)
  - Installing facade/flare-client-php (1.3.2): Downloading (100%)
  - Installing facade/ignition (2.0.6): Downloading (100%)
  - Installing fzaninotto/faker (v1.9.1): Downloading (100%)
  - Installing hamcrest/hamcrest-php (v2.0.0): Downloading (100%)
  - Installing mockery/mockery (1.3.1): Downloading (100%)
  - Installing nunomaduro/collision (v4.2.0): Downloading (100%)
  - Installing sebastian/version (2.0.1): Downloading (100%)
  - Installing sebastian/type (1.1.3): Downloading (100%)
  - Installing sebastian/resource-operations (2.0.1): Downloading (100%)
  - Installing sebastian/recursion-context (3.0.0): Downloading (100%)
  - Installing sebastian/object-reflector (1.1.1): Downloading (100%)
  - Installing sebastian/object-enumerator (3.0.3): Downloading (100%)
  - Installing sebastian/global-state (3.0.0): Downloading (100%)
  - Installing sebastian/exporter (3.1.2): Downloading (100%)
  - Installing sebastian/environment (4.2.3): Downloading (100%)
  - Installing sebastian/diff (3.0.2): Downloading (100%)
  - Installing sebastian/comparator (3.0.2): Downloading (100%)
  - Installing phpunit/php-timer (2.1.2): Downloading (100%)
  - Installing phpunit/php-text-template (1.2.1): Downloading (100%)
  - Installing phpunit/php-file-iterator (2.0.2): Downloading (100%)
  - Installing theseer/tokenizer (1.1.3): Downloading (100%)
  - Installing sebastian/code-unit-reverse-lookup (1.0.1): Downloading (100%)
  - Installing phpunit/php-token-stream (3.1.1): Downloading (100%)
  - Installing phpunit/php-code-coverage (7.0.10): Downloading (100%)
  - Installing doctrine/instantiator (1.3.1): Downloading (100%)
  - Installing phpdocumentor/reflection-common (2.1.0): Downloading (100%)
  - Installing phpdocumentor/type-resolver (1.1.0): Downloading (100%)
  - Installing webmozart/assert (1.8.0): Downloading (100%)
  - Installing phpdocumentor/reflection-docblock (5.1.0): Downloading (100%)
  - Installing phpspec/prophecy (v1.10.3): Downloading (100%)
  - Installing phar-io/version (2.0.1): Downloading (100%)
  - Installing phar-io/manifest (1.0.3): Downloading (100%)
  - Installing myclabs/deep-copy (1.9.5): Downloading (100%)
  - Installing phpunit/phpunit (8.5.5): Downloading (100%)
symfony/routing suggests installing symfony/config (For using the all-in-one router or any loader)
symfony/routing suggests installing symfony/yaml (For using the YAML loader)
symfony/routing suggests installing symfony/expression-language (For using expression matching)
symfony/routing suggests installing doctrine/annotations (For using the annotation loader)
symfony/event-dispatcher suggests installing symfony/dependency-injection
symfony/http-kernel suggests installing symfony/browser-kit
symfony/http-kernel suggests installing symfony/config
symfony/http-kernel suggests installing symfony/dependency-injection
symfony/service-contracts suggests installing symfony/service-implementation
symfony/console suggests installing symfony/lock
swiftmailer/swiftmailer suggests installing true/punycode (Needed to support internationalized email addresses, if ext-intl is not installed)
ramsey/uuid suggests installing ext-uuid (Enables the use of PeclUuidTimeGenerator and PeclUuidRandomGenerator.)
ramsey/uuid suggests installing ramsey/uuid-doctrine (Allows the use of Ramsey\Uuid\Uuid as Doctrine field type.)
ramsey/uuid suggests installing paragonie/random-lib (Provides RandomLib for use with the RandomLibAdapter)
symfony/translation suggests installing symfony/config
symfony/translation suggests installing symfony/yaml
monolog/monolog suggests installing graylog2/gelf-php (Allow sending log messages to a GrayLog2 server)
monolog/monolog suggests installing doctrine/couchdb (Allow sending log messages to a CouchDB server)
monolog/monolog suggests installing ruflin/elastica (Allow sending log messages to an Elastic Search server)
monolog/monolog suggests installing elasticsearch/elasticsearch (Allow sending log messages to an Elasticsearch server via official client)
monolog/monolog suggests installing php-amqplib/php-amqplib (Allow sending log messages to an AMQP server using php-amqplib)
monolog/monolog suggests installing ext-amqp (Allow sending log messages to an AMQP server (1.0+ required))
monolog/monolog suggests installing ext-mongodb (Allow sending log messages to a MongoDB server (via driver))
monolog/monolog suggests installing mongodb/mongodb (Allow sending log messages to a MongoDB server (via library))
monolog/monolog suggests installing aws/aws-sdk-php (Allow sending log messages to AWS services like DynamoDB)
monolog/monolog suggests installing rollbar/rollbar (Allow sending log messages to Rollbar)
monolog/monolog suggests installing php-console/php-console (Allow sending log messages to Google Chrome)
league/flysystem suggests installing league/flysystem-eventable-filesystem (Allows you to use EventableFilesystem)
league/flysystem suggests installing league/flysystem-rackspace (Allows you to use Rackspace Cloud Files)
league/flysystem suggests installing league/flysystem-azure (Allows you to use Windows Azure Blob storage)
league/flysystem suggests installing league/flysystem-webdav (Allows you to use WebDAV storage)
league/flysystem suggests installing league/flysystem-aws-s3-v2 (Allows you to use S3 storage with AWS SDK v2)
league/flysystem suggests installing league/flysystem-aws-s3-v3 (Allows you to use S3 storage with AWS SDK v3)
league/flysystem suggests installing spatie/flysystem-dropbox (Allows you to use Dropbox storage)
league/flysystem suggests installing srmklive/flysystem-dropbox-v2 (Allows you to use Dropbox storage for PHP 5 applications)
league/flysystem suggests installing league/flysystem-cached-adapter (Flysystem adapter decorator for metadata caching)
league/flysystem suggests installing league/flysystem-sftp (Allows you to use SFTP server storage via phpseclib)
league/flysystem suggests installing league/flysystem-ziparchive (Allows you to use ZipArchive adapter)
laravel/framework suggests installing ext-memcached (Required to use the memcache cache driver.)
laravel/framework suggests installing ext-redis (Required to use the Redis cache and queue drivers (^4.0|^5.0).)
laravel/framework suggests installing aws/aws-sdk-php (Required to use the SQS queue driver, DynamoDb failed job storage and SES mail driver (^3.0).)
laravel/framework suggests installing doctrine/dbal (Required to rename columns and drop SQLite columns (^2.6).)
laravel/framework suggests installing league/flysystem-aws-s3-v3 (Required to use the Flysystem S3 driver (^1.0).)
laravel/framework suggests installing league/flysystem-cached-adapter (Required to use the Flysystem cache (^1.0).)
laravel/framework suggests installing league/flysystem-sftp (Required to use the Flysystem SFTP driver (^1.0).)
laravel/framework suggests installing moontoast/math (Required to use ordered UUIDs (^1.1).)
laravel/framework suggests installing nyholm/psr7 (Required to use PSR-7 bridging features (^1.2).)
laravel/framework suggests installing pda/pheanstalk (Required to use the beanstalk queue driver (^4.0).)
laravel/framework suggests installing pusher/pusher-php-server (Required to use the Pusher broadcast driver (^4.0).)
laravel/framework suggests installing symfony/cache (Required to PSR-6 cache bridge (^5.0).)
laravel/framework suggests installing symfony/filesystem (Required to create relative storage directory symbolic links (^5.0).)
laravel/framework suggests installing symfony/psr-http-message-bridge (Required to use PSR-7 bridging features (^2.0).)
laravel/framework suggests installing wildbit/swiftmailer-postmark (Required to use Postmark mail driver (^3.0).)
guzzlehttp/psr7 suggests installing zendframework/zend-httphandlerrunner (Emit PSR-7 responses)
psy/psysh suggests installing ext-pdo-sqlite (The doc command requires SQLite to work.)
psy/psysh suggests installing hoa/console (A pure PHP readline implementation. You'll want this if your PHP install doesn't already support readline or libedit.)
filp/whoops suggests installing whoops/soap (Formats errors as SOAP responses)
facade/ignition suggests installing laravel/telescope (^3.1)
sebastian/global-state suggests installing ext-uopz (*)
phpunit/php-code-coverage suggests installing ext-xdebug (^2.7.2)
phpunit/phpunit suggests installing phpunit/php-invoker (^2.0.0)
phpunit/phpunit suggests installing ext-xdebug (*)
Writing lock file
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: facade/ignition
Discovered Package: fideloper/proxy
Discovered Package: fruitcake/laravel-cors
Discovered Package: laravel/tinker
Discovered Package: nesbot/carbon
Discovered Package: nunomaduro/collision
Package manifest generated successfully.
42 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
> @php artisan key:generate --ansi
Application key set successfully.
[email protected] [~/public_html/laravel]# php -i |grep memory_limit
memory_limit => 256M => 256M
[email protected] [~/public_html/laravel]#
Thanks
 

cPanelLauren

Product Owner
Staff member
Nov 14, 2017
13,296
1,252
313
Houston
That doesn't necessarily mean that it will always work though. The other client may be using php memory limit in a different way you really can't compare accounts like that unless they have the exact same configuration, on the exact same server, with the exact same amount of traffic at the same time - which is nearly impossible.
 

Luana Premoli

Well-Known Member
Oct 3, 2016
68
7
8
São Paulo/Brazil
cPanel Access Level
Root Administrator
Hi,


I created this topic just to try to find out what's wrong with the first customer.
What I meant by the previous answer is that it is not by changing a global server directive that the problem will be solved, because if this were the case, I believe that all customers of the same server would have the problem reported, which is not the case. case. The error occurs with a specific user.



Code:
[[email protected] ~]# su hgtransf
[email protected] [~]# php -i |grep memory_limit
memory_limit => 256M => 256M
[email protected] [~]#
[email protected] [~]#
[email protected] [~]# exit
[[email protected] ~]# su appbac20
[email protected][~]#  php -i |grep memory_limit
memory_limit => 256M => 256M
[email protected] [~]#
[/ CÓDIGO]

Does not work: http://br224.teste.website/~appbac20/phpinfo.php
It works: http://br224.teste.website/~hgtransf/phpinfo.php
 
Last edited:

cPSamuelM

Technical Analyst Team Lead
Staff member
Nov 20, 2019
196
37
103
USA
cPanel Access Level
Root Administrator
Hello @Luana Premoli

Can you please clarify whether you are running the commands from a standalone SSH client like Putty on Windows, or iTerm on a Mac? Or are you using the terminal emulator feature inside cPanel itself?

Additionally, can you please let us know which version of cPanel is in use on the server where you receive the error message?

If you are using the terminal emulator feature inside cPanel itself, it is likely that the "Fatal error: Out of memory (allocated 809508864) (tried to allocate 4096 bytes)" error occurs because the cPanel service itself imposes a maximum memory limit of 4096 bytes:

Code:
-bash-4.2# grep maxmem /var/cpanel/cpanel.config
maxmem=4096

If this seems like a reasonable explanation for the error you're observing, I would suggest you try logging in with a standalone SSH client to resolve the problem. However, I am only speculating at this point based on the information available thus far. If my hypothesis doesn't apply in this case, please let us know and we will review further.
 

Luana Premoli

Well-Known Member
Oct 3, 2016
68
7
8
São Paulo/Brazil
cPanel Access Level
Root Administrator
Hi,

With "Shell Fork Bomb Protection" disabled, it works normally, but this is a shared server and we don't want to leave this option turned off.

I am logging in through Putty with Jailed Shell user and password for a computer with Windows 10 Pro 64 bit OS.


Code:
[email protected] [~]# grep maxmem /var/cpanel/cpanel.config
maxmem=4096
[email protected] [~]#
Server information:

Code:
[[email protected] ~]# grep '' /etc/redhat-release /usr/local/cpanel/version /var/cpanel/envtype; uname -r
/etc/redhat-release:CentOS release 6.10 (Final)
/usr/local/cpanel/version:11.86.0.21
/var/cpanel/envtype:kvm
4.14.146-225.ELK.el6.x86_64
[[email protected] ~]#
Thanks
 

cPSamuelM

Technical Analyst Team Lead
Staff member
Nov 20, 2019
196
37
103
USA
cPanel Access Level
Root Administrator
Hello again @Luana Premoli

Thank you for confirming that information. The Shell Fork Bomb Protection implements specific limits which are the reason the Composer CLI commands are failing.

While researching this I found the following forum posts I would like to refer you to. Here is a basic overview and explanation about how user limits are implemented with the Jailshell system:

https://forums.cpanel.net/threads/m...pts-from-jailshell-account.126837/post-573157

And here is a forum topic where a user shared the changes they made to override the limits imposed by the Jailshell system:

https://forums.cpanel.net/threads/the-purpose-of-etc-profile-d-limit-sh.389332/

Note that modifying these limits is not supported, and any changes you make will likely be overwritten when toggling Jailshell off or on again. However, hopefully these posts and the information discussed within will point you in the right direction.

You may also want to consider enabling Normal Shell access for users that require unrestricted access.

Best regards