How to change Port of Squid Proxy Server

Squid proxy server runs on port 3128 by default. Changing squid proxy server port to a non-standard port is a

configure: error: “mysql headers missing.”

When compiling a software from source I get error On Debian 10, fixed it by installing package default-libmysqlclient-dev See Errors

Vagrant private_network can’t ping

When I create Vagrant virtual machine with private networking, I can’t ping to IP address of the VM. The only


How to add a PPA repository using Ansible?

To add a PPA repository using Ansible, use Example

How to find all IP address of a Linux server

To list all configured IP addresses on a server, you can use the command To find the main IP, use

How to check old login history with last command

To see login history on a Linux system, you can use the “last” command. -n 10 limit result to last


One of the configured repositories failed (MariaDB100)

On a Cpanel server, when running “yum update”, I got the error message “One of the configured repositories failed (MariaDB100)”.

Out Of Memory (OOM) Error

OOM (Out Of Memory) error happens when a server run out of Memory. When a server runs out of memory,

Odoo ERP

odoo Unable to find Wkhtmltopdf on this system

On an odoo installation, I got the error “Unable to find Wkhtmltopdf on this system”, when generating reports. This error


apt error doesn’t support architecture ‘i386’

On an Ubuntu server, when running “apt update” command, I got the following error message This error is because the

Failed to mount /sysroot XFS Boot failure

On an Amazon EC2 server, the server won’t boot. On checking the serial console, the server was stuck with an

Rocky Linux

How to install PPTP VPN on Rocky Linux 8

PPTP on Rocky Linux is provided by the EPEL repository, so enable EPEL repo by running Install the pptpd package