Dev {Tricks}

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How to fix Internal Server Error

500 Internal Server Error

  • Check Owner and Group of files and folders.
  • Check permissions files and folders. Set folders permission 755 and files 644.
On CentOS Web Panel, fix permissions through Users Accounts => Fix Permissions => select myDomain and check on Fix Permissions, the chown group and chmod.
find /home/user_name -type d -exec chmod 755 {} \;
find /home/user_name -type f -name "*" | xargs chmod 644

This will change all files and folders permission under the username.

 

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How to install and configure CentOS Web Panel in CentOS 7?

System Requirements

Complete the following tasks before starting the installation process:

1. Setup Hostname

  • Check status of current hostname
hostname

or

hostnamectl
  • Command for changing hostname
hostname server.domain.com
  • Edit /etc/hostname
vi /etc/hostname

Change old hostname to new server.domain.com

  • Edit the /etc/hosts File
sudo vi /etc/hosts

Change the old hostname the new one.

  • Reboot the server

Login SSH and check the hostname

hostnamectl status

2. Server Updates

  • Preparing Server

Let’s install required packages for CWP installation

yum -y install wget
  • Server Update

Now we need to update your server to the latest version

yum -y update
  • Reboot Server

Reboot your server so that all updates can take effect.

reboot

CentOS 7: Installer for CentOS 7 (recommended)

cd /usr/local/src
wget http://centos-webpanel.com/cwp-el7-latest
sh cwp-el7-latest

CentOS 8: Installer for CentOS 8 

cd /usr/local/src
wget http://centos-webpanel.com/cwp-el8-latest
sh cwp-el8-latest

Reboot your server so that all updates can take effect and CWP gets started.

shutdown -r now

CentOS Web Panel Configuration

Log in to your CWP server

CentOS WebPanel Admin GUI at http://SERVER-IP:2030/

Username: root
Password: your root password

  • WARNING! Your root Email address for notifications isn’t set.
    Setup root email
  • Change Hostname: Server settings -> Change hostname from the left sidebar.
  • – Setup nameservers: DNS Funtions>Edit Nameservers IPs
  • – Setup shared ip (must be your public IP address)
  • – Install “Limit server resources (cgroups)” under Security: Cgroups allow you to limit resources per user — such as CPU %, system memory, network bandwidth, or combinations of these resources.
  • – Setup at least one hosting package (or edit default package)

& now you are ready to host domains…

For additional configuration instruction, please check our wiki/documentation site.
http://wiki.centos-webpanel.com/

  • Firewall – SECURITY ISSUE
    CSF/LFD Firewall is NOT enabled on your server, click here to enable it.
  • ModSecurity – SECURITY ISSUE
    Mod Security is NOT enabled on your server, click here to enable it.
  • Hidden Processes – SECURITY ISSUE
    Hide all processes if not owned by the user is NOT activated on your server, click here to enable it.

Install and Enable firewall

ConfigServer Security & Firewall (CSF) + Login Failure Daemon (LFD)

Security>Firewall manager

Install and Enable mod_security

Add a user account

User Accounts -> New Account

Install Softaculous (optional)

Script Installers->Scripts Manager->Softaculous

Install a Let’s Encrypt certificate for SSL-enabled CWP

Weberver Settings->ssl_certificate

How to change the default SSH Port 22 to your choice

WARNING: Security vulnerability!
Your server is using default SSH Port 22, to make your server more secure change SSH port in config file /etc/ssh/sshd_config and in CSF firewall !

After changes are done don’t forget to restart SSH and CSF Firewall.

  1. After login to CWP go to Services Config->SSH Configuration. This will open /etc/ssh/sshd_config
  2. Then go to Security->CSF Firewall, click the Firewall Configuration button. This will open /etc/csf/csf.conf
  3. Look for the #Allow incoming TCP ports section and add your port number to the list.
  4. Save changes
  5. On cwp dashboard, restart SSH server.
  6. Then go to Security->CSF Firewall, click the Firewall Restart button

 

Additional multiple php versions

Go to PHP Version Switcher and then click on PHP Selector
Install Dependencies

 

Increase file upload limit | CWP

 

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Restart an Apache Web Server

Using Init.d

/etc/init.d/apache2 restart
sudo /etc/init.d/apache2 restart
sudo service apache2 restart

For a graceful restart, replace restart with reload.

For CentOS and RHEL servers

service httpd restart

Using Systemctl

systemctl restart apache2.service

Using Apachectl

sudo apachectl -k restart
sudo apachectl -k graceful

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How to change the email sending limit in DirectAdmin?

SSH method

Login to SSH as root and Run below line.

echo 500 > /etc/virtual/bdhostit.com/limit/helpdesk1

The above command will increase daily email sending limit to 500 of helpdesk1@bdhostit.com.
Change the bold text replacing your details.