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kipmi0 IPMI Kernel Helper 99% / 100% High CPU Usage (But Low Load Average)

In CentOS 7 or Red Hat Enterprise Linux (RHEL) 7, a process called "kipmi0" may show that it's utilizing unusually high percentage of CPU processing power, e.g. 99.7%, 99.8%, 99.9% or even 100%, even though kipmi0 process [...]

How to Set & Change Hostname & FQDN (Fully Qualified Domain Name) in RHEL & CentOS 7

In a networking environment, all computer systems, be it Windows PC, Linux server or Unix mainframe, has a hostname. A hostname is a label (also known as computer name) that is assigned to a device connected to [...]

By | 2017-03-25T04:00:52+00:00 March 25th, 2017|Categories: Linux|Tags: , , , , |0 Comments

How to Find All Files with File Size Zero (0) Bytes in a Directory Recursively

In Linux operating system, to find and print the name of all files that has the file size 0 (zero) bytes, in a directory and all its sub-directories recursively, use one of the following commands: find /path/to/directory/ [...]

By | 2017-01-20T16:45:40+00:00 January 20th, 2017|Categories: Linux|Tags: , |0 Comments

Grant User Sudo Access (Add to Sudoers File or Wheel Group)

In Linux operating system, most of the users log in as standard user or normal user. But occasionally, one has to have administrator or root privileges in order to perform certain administrative tasks. Normally administrative privileges are [...]

By | 2017-01-16T22:25:35+00:00 January 16th, 2017|Categories: Linux|Tags: , |0 Comments

Check and Print Who Is Logging In in Linux / Unix

In Linux and UNIX operating system such as Ubuntu, Red Hat Enterprise Linux, Solaris, FreeBSD, CentOS and other distributions, many users can login to the system concurrently, by using Telnet and/or SSh (Secure Shell) to logon remotely, [...]

By | 2016-12-10T21:38:50+00:00 December 10th, 2016|Categories: Linux|Tags: , , |0 Comments

How to Install Let’s Encrypt in CentOS / RHEL / Fedora / FreeBSD / OpenBSD / Ubuntu / Linux

Let's Encrypt is a free, automated, and open certificate authority (CA) that provides Domain Validated (DV) certificates essential for SSL, which enables the HTTPS secure connection that encrypts data transfer. . The DV certificate verifies that you [...]

Create & Migrate Existing Working RedHat / CentOS System to RAID 1 / RAID 10

Linux system has built-in support for software RAID, through MD devices aka Linux Software RAID. Most Linux distributions such as Red Hat Enterprise Linux (RHEL) and CentOS allows you to easily set up RAID arrays while installing [...]

By | 2016-12-09T08:39:11+00:00 December 9th, 2016|Categories: Linux|Tags: , , , , , |7 Comments

MariaDB: Webmin MySQL Startup Script /etc/rc.d/init.d/mysqld Was Not Found

MariaDB, the enhanced in-place upgrade of MySQL database management system, is getting more popular each passing day. We decide to upgrade from MySQL, which comes preinstalled in CentOS, to MariaDB 5.5, and subsequently to MariaDB 10, the [...]

By | 2016-12-09T08:39:14+00:00 December 9th, 2016|Categories: Databases|Tags: , , , , , , , |0 Comments

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