Monday, November 30, 2020

Configure Local DNS Server using Dnsmasq on Ubuntu 20.04

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Welcome to our tutorial on how to install and configure local DNS Server using Dnsmasq on Ubuntu 20.04. "Dnsmasq is a lightweight, easy to configure, DNS forwarder and DHCP server. It is designed to provide DNS and optionally, DHCP and TFTP, to a small network. It can serve the names of local machines which are not in the global DNS". If...

Setup Caching-Only DNS Server using BIND9 on Ubuntu 20.04

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In this tutorial, we will discuss how to install and setup caching-only DNS server using BIND9 on Ubuntu 20.04. The Berkeley Internet Name Domain (BIND 9) is a versatile, classic and complete name server software that implements an Internet domain name server. It is the most widely-used name server software on the Internet. DNS on the hand refers to...

Create User Account using useradd/adduser commands in Linux

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In this tutorial, you will learn how to create user account using useradd/adduser commands in Linux. User management is one of the most common task in Linux system administration. Creating users, setting up their environments, setting passwords, managing their groups, deleting users etc are all tasks surrounding user management in Linux. Having the ability to manage users in LInux...

Microsoft 70-740: Nail this Exam Easily Using Exam Dumps

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It’s 2020 folks! Welcome to a new decade and the best time to land your dream job.The number of vacancies in the information technology field is growing rapidly, which means that it is an excellent moment to apply for the top positions you’ve been aiming for. In fact, the current employment industry is desperately in need of fresh talent. However,...

How to Pass Cisco 200-150 Exam Using Valid and Updated Exam Dumps?

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Technology has dramatically changed enterprise networks. International companies need larger and complex network structures to help them manage their data and operations. The data center is the nucleus of all these operations. So, if you want a job that is indispensable in a copy, then building your knowledge and experience in a modern data center is the path you...

Is It Possible to Explore Cisco CCNA Routing and Switching Certification via Practice Tests from Examsnap?

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Business and job environments are changing, and now IT is a new reality. You need to excel in IT skills if you want to start a successful career. The advanced change of business is driving the selection of programmable system designs with the relating requirement for extended abilities and information from the organizing engineers. To meet these modern IT jobs,...

How to Monitor Disk Input/Output on Linux

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In most cases whenever your Linux Server experience a performance slow down, the first thing you would want to check is the CPU or Memory usage using top, htop or any othet command. However all my seem well except the I/O Wait (wa, %iowait), a form of CPU idle time when nothing could be scheduled since the CPU has...

How to Measure Memory Usage in Linux

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Linux provides a handful tools for measuring and checking memory usage. In this tutorial, we are going to learn a quite a number of these tools so that we can be able to troubleshoot any memory related issues. free free command is one of the most popular commands for checking free and used physical memory as well as swap space on...

How to Measure CPU Usage in Linux

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CPU is critical to every other system operations. If a process consumes too much of CPU such that it becomes unavailable to other process, it causes performance bottleneck. Therefore, in order to troubleshoot any CPU related problems, you can use any of the following tools. iostat The iostat command is used to report the CPU statistics as well as input/output statistics...

Topic 200: Capacity Planning

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Capacity Planning is the first topic of the LPIC-2 exam 201-405 It covers the following objectives as described in LPIC-2 Exam 201-405 Objectives. Measure and Troubleshoot Resource Usage Predict Future Resource Needs In order to meet the first objectives, the following utilities are covered. iostat The iostat command is used to report the CPU as well as input/output statistics for devices and...