cPanel MultiPHP Manager with PHP-FPM

We all know, cPanel is one of best server admin panel. It's best thing is Easy Apache. It is user friendly GUI platform for managing Apache and PHP in WHM panel. cPanel is going to withdraw support for EasyApache 3 (EA3) and asking every user to upgrade EA4.

Recently I've upgraded it, It's too simple process, you can do this with their official tutorial.

But, after upgraded and if you are enabled and using PHP-FPM (FastCGI Process Manager), you may face some slowdown on websites or you may face frequent "This site can't be reached" error message on browser.

This is happens due to max_children size may exceed. That means, the default value of max_children is set to 5 on PHP-FPM. You can trace this issue with below command,

root@server [~]#egrep 'example.*max_children' /opt/cpanel/ea-php56/root/usr/var/log/php-fpm/error.log

the above commend will help to find specific website, where example is domain name without extension and ea-php56 is php version, where it may ea-php70 or ea-php72 or any other based on your php version.

This will give result as mentioned bellow,
[18-Sep-2018 05:34:58] WARNING: [pool example_com] server reached max_children setting (5), consider raising it
[18-Sep-2018 08:28:00] WARNING: [pool example_com] server reached max_children setting (5), consider raising it
[18-Sep-2018 08:44:26] WARNING: [pool example_com] server reached max_children setting (5), consider raising it
[18-Sep-2018 08:44:55] WARNING: [pool example_com] server reached max_children setting (5), consider raising it
[18-Sep-2018 09:31:40] WARNING: [pool example_com] server reached max_children setting (5), consider raising it
[18-Sep-2018 09:57:16] WARNING: [pool example_com] server reached max_children setting (5), consider raising it

If you get result as mentioned above, you may need to adjust max_children value on bellow steps.

WHM Home > Software > MultiPHP Manager

If you are not sure about website name, you can use below command to get all results,

root@server [~]#egrep 'consider raising it' /opt/cpanel/ea-php56/root/usr/var/log/php-fpm/error.log

Finding multiple folders in Linux with single command

Finding multiple folders with single commend on Linux is not a big deal.

I wanna know all temp / tmp and cache folders in websites, that are configured with WHM to exclude from the backup. Here is the command for that,


find /home/*/public_html \( -type d -iname "cache" -or -iname "tmp" -or -iname "temp" \)

To know size of these folders,

find /home/*/public_html \( -type d -iname "cache" -or -iname "tmp" -or -iname "temp" \) -exec du -sh {} \;

Finding files with in date range

Here is the command for find files that was modifed between 1st July 2018 to 20th July 2018 with it's details,

find . -type f -name "*.php" -newermt 2018-07-01 ! -newermt 2018-07-21 -exec ls -l {} \;

Please note, you have to mention next date of till date.

Shell script for read line from text file

My need:


Read line from the text file by shell script and append few text before and after the line.

Script:

#!/bin/bash
file="/root/scource.txt"
while IFS= read -r line
do
                echo -e "        <User>"
                echo -e "            <Path>$line</Path>"
                echo -e "        </User>"
done <"$file"

cat source.txt

/home/kumar
/home/moulee
/home/admin

Output:
<User>
  <Path>/home/kumar</Path>
</User>
<User>
  <Path>/home/moulee</Path>
</User>
<User>
  <Path>/home/admin </Path>
</User>

Copy all Incoming Outgoing Emails - Employee monitor

How can we monitor employee's email conversations ?

If we are running company, It's too impotent to monitoring employee's email conversations which is traveled by company domain name. If you are using WHM with Exim mail server, it's too easy.

Let's consider "domain.com" is your company domain, you have 50's of mail IDs. You are having a mail ID "monitor@domain.com" and you need to archive / monitor all your mails incoming and outgoing mails to "monitor@domain.com".

To do this, you must have access to server with ssh (root access) and WHM (root access).

1. "/usr/local/cpanel/etc/exim/sysfilter/options" is path where you can store all custom filters.

#cd /usr/local/cpanel/etc/exim/sysfilter/options

2. Create a empty file for store your filter rules. You can create as much of filter as you want, so create a file with understandable name with domain name, replace domain_com to your company domain name.

#vim incoming_outgoing_domain_com

3. Copy paste bellow code to this file and replace "domain.com" to your company domain name and "monitor@domain.com" to your mail that you created for archive all mails,

For incoming mails only,

if ("$h_to:, $h_cc:, $h_bcc" contains "domain.com")
then
     unseen deliver "monitor@domain.com"
endif

For outgoing mails only,

if $sender_address: contains "domain.com"
then
     unseen deliver "monitor@domain.com"
endif

For incoming and outgoing mails,

if ("$h_to:, $h_cc:, $h_bcc" contains "domain.com")
   or ("$sender_address:" contains "domain.com")
then
   unseen deliver "monitor@domain.com"
endif

Note: Forwarding to other domains, outside server won't work.

Device eth0 does not seem to be present, delaying initialization - Virtual Box Error - CentOS 6.6

Hello everyone,

Today I've faced an error on Virtual Box with CentOS 6.6 today, If you are frequently use virtual machines, you'll see these kind of errors. Let's explain my situation.

I've installed and used CentOS 6.6 for python before 2 months, later I've deleted it's account (not files) from Virtual Box because of no frequent use. Today I need to test something on that server. So I've created account and pointed this virtual machine to newly created account.

Once server up, logged to server and tried to ping for check the network. Network not succeeded, when I check IP with ifconfig, I can see only loopback network. "service network restart" says "Device eth0 does not seem to be present, delaying initialization".

Okay, What is solution now ?

Reason for this issue: When we install guest OS with virtual box, It'll assign mac address to it's guest OS's device. But in our case, we have installed guest OS already and it already assigned some mac address. When we create account again and merge guest OS with it, we will get conflict with 2 different mac address. One was created during original installation of guest OS, another one is created during recreate of virtualbox guest OS account.

To fix this,

Login to OS, remove the file as mentioned bellow, which have old mac address.

# rm /etc/udev/rules.d/70-persistent-net.rules

Reboot server, so that new fill will be generated again,

# reboot

Now open the file,
# cat /etc/udev/rules.d/70-persistent-net.rules

It'll look as mentioned bellow,

# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.

# PCI device 0x8086:0x100e (e1000)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="08:00:17:ef:c5:08", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

Note down the ATTR{address}

open following file

# vim /etc/sysconfig/network-scripts/ifcfg-eth0

Replace mac address which you copied to HWADDR
Remove line with UUID

Now restart the network service,

# service network restart

That's It. Now you can able access network on guest OS.

Increase WordPress URL Length

Hello Guys,

I'm back here after a long period. Today I would like to share the simple trick for WordPress Blogging. If you need to increase URL length in wordpress sites, do following things.

1. On page "wp-includes/formatting.php" find the following line and change the value that mention as Bold

function sanitize_title_with_dashes

$title = utf8_uri_encode($title, 300);

2. In database, find the table and change the value of table field.
wp_post => post_name => varchar 300

============================

Drawback of this setup

Whenever WordPress release update and you update your website, the default setting will be over write.

But, It won't affect the custom URL that you have assigned to the post. So that old URLs may not work until you do the same URL length increasing process.