log location:
echo 'local6.* /var/log/commands.log' >> /etc/rsyslog.d/bash.conf
add the following rule in the end of /etc/bashrc file:
export PROMPT_COMMAND='RETRN_VAL=$?; logger -p local6.debug "$(whoami) [$$]: $(history 1 | sed "s/^[ ]*[0-9]\\+[ ]*//" ) [$RETRN_VAL]"'

restart the service:

service rsyslog restart

done 🙂

Here, this fucking way:

ls -alh /usr/local/directadmin/data/users/*/php/php-fpm*.conf

Also:
da config-set php_fpm_max_children_default 40
systemctl restart directadmin
da build rewrite_confs
systemctl restart php-fpm73

P.S. Target guide:
https://docs.directadmin.com/webservices/php/php-fpm.html

# ┌────────── minute (0 - 59)
# │ ┌──────── hour (0 - 23)
# │ │ ┌────── day of month (1 - 31)
# │ │ │ ┌──── month (1 - 12)
# │ │ │ │ ┌── day of week (0 - 6 => Sunday - Saturday, or
# │ │ │ │ │ 1 - 7 => Monday - Sunday)
# ↓ ↓ ↓ ↓ ↓
# * * * * * command to be executed
#
# 0 - Sun Sunday
# 1 - Mon Monday
# 2 - Tue Tuesday
# 3 - Wed Wednesday
# 4 - Thu Thursday
# 5 - Fri Friday
# 6 - Sat Saturday
# 7 - Sun Sunday
#

#!/bin/bash

if [[ "$1" = "all" ]];then
db_backup_function
files_backup_function
fi

A few thread file transfer:

rclone copy :sftp:/disk_folder/disk_hash_id /the_way/to_target_folder/ --sftp-host=target_host_name_or_ip --sftp-user=your_username --sftp-ask-password --sftp-key-use-agent=false --sftp-shell-type=unix --sftp-md5sum-command=md5sum --progress --transfers=1 --multi-thread-streams=6 --checksum --bwlimit=300M

The single thread file transfer with additional validation:
rsync --progress --checksum --checksum-choice=md5 /disk_folder/disk_hash_id your_username@target_host_name_or_ip:/the_way/to_target_folder/

Aggregated itop stat (very helpful for a debug in some cases):

iotop -aoP

Manual checksums for the file:

md5sum /path/to/file

Look deeper at TCP timeouts and waits:

netstat -napo|grep TIME_WAIT

Check disk info:
qemu-img info disk_name

Create disk from command line:
qemu-img create -f qcow2 new_disk_name 15G

Converting/cloning the disk (It should also fix the dependency on the backing file, which means building a standalone VM)
qemu-img convert -O qcow2 old_with_backing_dependency.qcow2 new_standalone.qcow2

Add the backuing file to already existing disk (or rewrite this file):
qemu-img rebase -u -b /way_to_the_backing/file -F qcow2 /way_to_disk/new.qcow2

Creating disk WITH backing file:
qemu-img create -f qcow2 -F qcow2 -b /way_to_the_backing/file new.qcow2 500G

Resize disk:
qemu-img resize disk.qcow2 +10G

Attach the disk to VM:
virsh attach-disk --domain short_VM_ID /way_to_disk/file --target vdx --driver "qemu" --subdriver "qcow2"

Detach the disk from VM:
virsh detach-disk --domain short_VM_ID --target vdx

Check VM details:
virsh dumpxml short_VM_ID

Show all VMs:
virsh list --all

Short reminder

Mount:

sshfs root@server2scan:/var/www/customer_id/ /mnt/customer_id -o IdentityFile=/root/.ssh/scan.key -o allow_other

Scan:

cxs --force --deep --timemax 1000 --filemax 100000 --report /root/scan_results/customer_id.scan_report /mnt/customer_id/

1. Use lsblk to locate partitions and their IDs:

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 8:0 0 40G 0 disk
├─vda1 8:1 0 1M 0 part
└─vda2 8:2 0 40G 0 part /

2. LVM case:

growpart /dev/vda 2
pvresize /dev/vda2
lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
xfs_growfs /dev/mapper/ubuntu--vg-ubuntu--lv

OR, if we use ext4:

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

3. non-LVM case:

growpart /dev/vda 2
xfs_growfs /

OR, if we use ext4:

resize2fs /

ps. growpart is provided by the following package in RHEL:

cloud-utils-growpart

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

Simple code to insert into the index.php file (at the top of it) and see in the log the list of domains requested by the website:

// 🔥 HTTP Debug Trap with backtrace
class MyHttpSniffer {
public $context;

function stream_open($path, $mode, $options, &$opened_path) {
$logFile = __DIR__ . '/http-trap.log';
$timestamp = date('c');

// Захоплюємо бектрейс
ob_start();
debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
$backtrace = ob_get_clean();

// Формуємо лог
$logEntry = "[$timestamp] HTTP REQUEST TO: $path\n";
$logEntry .= "Backtrace:\n$backtrace\n";
$logEntry .= str_repeat("-", 80) . "\n";

file_put_contents($logFile, $logEntry, FILE_APPEND);

// Не відкриваємо — блокуємо виклик
return false;
}

function stream_stat() {}
function stream_read($count) { return false; }
function stream_eof() { return true; }
function stream_seek($offset, $whence) { return false; }
function stream_tell() { return 0; }
}

@stream_wrapper_unregister("http");
@stream_wrapper_unregister("https");
@stream_wrapper_register("http", "MyHttpSniffer");
@stream_wrapper_register("https", "MyHttpSniffer");