Zabbix is a monitoring solution for IT infrastructure. We can monitor most of the devices in the network and most of the services on the servers. To monitor applications, we must have a Zabbix server installed in the network. Zabbix Agent is required on the systems, we need to monitor… Continue Reading How To Install Zabbix Agent on Ubuntu 

In this article we are going to resolve the Nagios alert “(No output on stdout) stderr: connect to address IP port 5666: Connection refused” on ubuntu 18.04 Prerequisites A system running Ubuntu 18.04 should have the following A user account with sudo privileges The System with ufw  The system with… Continue Reading Nagios Alert: (No output on stdout) stderr: connect to address IP port 5666: Connection refused on Ubuntu 18.04

How to solve the Website internal server error from the following apache error log”Invalid command ‘Header’ perhaps misspelled or defined by a module not included in the server configuration” Date: 16-12-2020 Step 1: You are getting above error due to header module is not enabled in Apache on Ubuntu. You… Continue Reading How to solve the Website internal server error from the following apache error log”Invalid command ‘Header’ perhaps misspelled or defined by a module not included in the server configuration”

How To Install Postman on Ubuntu 18.04 LTS Date : 24/07/2019 Introduction Postman is one of the powerful tool built for API development. Most importantly, Postman used to develop API faster. Initially, it started as a Chrome browser extension and quickly become one of the most used API tools by… Continue Reading How To Install Postman on Ubuntu 18.04 LTS

dpkg: error processing package javascript-common Date posted : 05/04/2019 When we installed VestaCP on a Ubuntu 18.04 system, we ran into this below error. In order to resolve this error, we need to clean up this package. We need to use purge option to delete the files completely. That solves… Continue Reading dpkg: error processing package javascript-common

Create apache Virtual Hosts In Ubuntu DATE POSTED: 06/03/2019 In this post we will explain how to create the virtual hosts in ubuntu. What is: Apache? Apache is the most important used web server software in the world because it is an open source software. This web server developed and… Continue Reading Create apache Virtual Hosts In Ubuntu

SSH setup in a newly installed Ubuntu 16.04.2 server Secure Shell(SSH) is a protocol used to login securely from a remote host to other over a unsecured network. The password will be Encrypted when trying to login to a remote host. Prerequisites: We have a newly installed Ubuntu Server 16.04.2… Continue Reading SSH setup in a newly installed Ubuntu 16.04.2 server

Enable Root login in newly installed Ubuntu Server 16.04.2: This post is to guide you on how to enable root user or root login in a newly installed Ubuntu Server 16.04.2 . Prerequisites: Installed a new Ubuntu Server 16.04.2 Already a local user name created without admin rights. Implementation: Consider… Continue Reading Enable Root login in newly installed Ubuntu Server 16.04.2

How to disable PING or ICMP replies from a Ubuntu Server 16.04.2: A server admin or an user can disable ping or icmp replies from a server for the following reasons, Security reason. Avoid network congestion. Avoid network flood using ping hostname -f Prerequisites: Ubuntu Server 16.04.2 Implementation: Follow the… Continue Reading How to disable PING or ICMP replies from a Ubuntu Server 16.04.2

How to disable PING or ICMP replies from a Ubuntu Server 16.04.2 Temporarily: A server admin or an user can disable ping or icmp replies from a server for the following reasons, Security. Avoid network congestion. Avoid network flood using ping hostname -f Prerequisites: Ubuntu Server 16.04.2 Implementation: Follow the… Continue Reading How to disable PING or ICMP replies from a Ubuntu Server 16.04.2 Temporarily