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Articles by karthikeya Boyini
Page 100 of 143
How to Find the List of Daemon Processes and Zombie Processes in Linux
This article will guide you to understand the Zombie process and Daemons, and also help us to find the process which is running in the background.What is Zombie Process?When a process ends the execution, then it will have an exit status to report to its master process. Because of that little bit of information, the process will remain in the OS process table as a zombie process, which indicates that it is not to be scheduled for future, but this process cannot be completely removed or the process ID will not be used until the exit has been determined and ...
Read MoreHow to Enable Or Add Swap Space on Ubuntu 16.04
In this article, we will learn how to enable or add the swap partition on Ubuntu 16.04, actually, the swap will increase the chance of responsiveness of the servers by guarding the out of memory errors for the applications, by default Ubuntu will not enable the swap space. We will learn how to add or enable the swap file for Ubuntu 16.04 servers.Swap is the location or the file which can handle the temporary data which is not required immediately by RAM but will be used to increase the amount of information that the server can handle for its working ...
Read MoreHow to Deal with Threats and Opportunities
Isn’t it difficult to tackle certain situations when one wrong step can change the entire consequences? Yes, some situations make us dumbfound, and paralyze our decision-making capabilities whether that has a positive or negative impact on our project’s life. So, don’t you think that it is better to have some tools and techniques to deal with such threats and opportunities?Irrespective of the project’s duration and intricacy, risks are always there and in the case of long-term complex projects, the level of risks increases manifolds. So, to minimize the negative impact on our projects, we should have a concrete plan with ...
Read MoreHow to Create/Add a New Virtual Disk for an Existing Linux Virtual Machine
This article helps you to create and add a new virtual disk to an existing Linux virtual machine on VMware. Here are some steps for adding a new SCSI based virtual disk on a CentOS Linux virtual machine. We are assuming that you are already familiar with Linux system administration skills and having knowledge of vCenter Server or vSphere Client. For a full description of the utilities mentioned in this article, please refer to the manuals.SolutionTo add a new virtual disk for an existing Linux virtual machine, Log in as root on your Linux virtual machine. Run this below command ...
Read MoreHow to Create a RAID 0 Storage Array with ‘mdadm’ on Ubuntu 16.04
In this article, we will learn how to create a RAID 0 Array configuration using the ‘mdadm’ utility.The ‘mdadm’ is a utility which is used to create and manage storage arrays on Linux with RAID capability where the administrators are having a great flexibility in managing the individual storage devices and creating the logical storage with a high performance and redundancy.RAID 0 array will work by dividing the data into small chunks and strips that data across the available storage disks, which means that each and every storage disk will contain a portion of data and when retrieving the data ...
Read MoreHow to Configure Nagios Server for Monitoring Apache Server
In this article, we will be covering about the installation of Nagios 4, a very popular and open source monitoring tool on Centos 6.7. We shall cover some basic configuration steps which might be useful to monitor a host of resources via the web interface. Here, we shall also utilize the Nagios Remote Plugin Executor (NRPE) that is installed as an agent on remote hosts to monitor the local resources of Servers/clients.Nagios is useful for keeping an inventory of your servers, and making sure your critical services are up and running. Using a monitoring system, Nagios is an essential tool ...
Read MoreHow to Configure IT Automation Management Using Ansible
This article provides a basic understanding of Ansible technology along with steps to install it. Ansible is an open source IT automation software for configuring, managing and installing software’s on the clients or nodes without any downtime and agent installed on the nodes. It uses SSH to communicate with the clients.Currently, most of the IT Automation tools runs as an agent in remote host, but Ansible needs only an SSH connection, a user and a Python (2.4 or later).Environment Setup DetailsServer Operating System: Centos 6.7 IP Address: 192.168.87.140 Host-name: ansible.hanuman.com User: root Remote Nodes Node 1: 192.168.87.156 Node 2: 192.168.87.157Installing ...
Read MoreHow To Change PostgreSQL Data Folder Location on Ubuntu 16.04
In this article, we will learn how to change or relocate the PostgreSQL Database data directory to the new location on Ubuntu 16.04. This database grows more frequently and depends upon the size of the company, as we needed more space and for security reasons we will change the data directory to the other volume or other location.PrerequisitesAn Ubuntu machine with a non-root user with Sudo permission.A PostgreSQL server installed and working.A new volume or location where we want to move the database data location, the new location will be /mnt/data_vol/PostgreSQL as the data_vol is the new volume attached to ...
Read MoreHow to be a Champion Scrum Master!
Do you like to be at the center stage when the management showers the praises and appreciates with thundering applause? Of course, those are the golden moments that everyone is dreaming about. But, is it easy to be a champion without adequate knowledge and skills? No, not at all. You should have all the required skills to excel.And when we talk about a role like Scrum Master, which is widely misunderstood and misinterpreted in many organizations, how come, a person effectively play the role and it’s responsibilities and becomes a champion scrum master, isn’t it challenging?Let’s discuss how you can ...
Read MoreHow to Add Cron Jobs to A Specific User in a Linux System
This article we will teach you to schedule a cron job to be executed at a specific time in a day.General Syntax of a Cron JobMIN HOUR Day of month Month Day of Week Command 0-59 0-23 1-31 1-12 0-6 linux command or scriptTo see the list of cron jobs which exists on the machine, run the below command# crontab -u test1 -l no crontab for test1To Add the New Cron Job to Test1 User, run the below Command #crontab -u test1 ...
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