How to Reset the Directory Manager Password on RHEL 7 / CentOS 7
In the digital world, it’s a common practice to remember passwords. However, due to the sheer number of passwords we need to remember, it’s not uncommon to forget one or…
How to Reset Forgotten Root Password on Linux RHEL 7 / CentOS 7
This short howto will explain the steps to reset a lost root password or to reset a forgotten root password on Linux RHEL 7 or CentOS 7. Basically, we will…
How to Change UUID of Linux Partition on CentOS 7
UUID (Universally Unique IDentifier) should be unique and it is used to identify storage devices on a linux system. If you cloned a virtual machine from vCenter, the metadata containing…
How to Setup WordPress Nginx with FastCGI Caching in CentOS 7
If you plan to run high traffic wordpress blog(wordpress nginx), i would suggest to run it in virtual private server (VPS) or dedicated server together with NGINX FastCGI Caching. Besides…
How to Install and Setup Apache Web Server in Linux
1. Introduction of Web Server (Apache Web Server) A web server generally hosts the web content, and responds to requests for this content from web browsers such as Internet explorer,…
How to Install MySQL on CentOS 7 / RHEL 7 / Oracle Linux 7 instead of MariaDB
By default, CentOS 7, RHEL 7, and Oracle Linux 7 come with MariaDB, a drop-in replacement for MySQL. However, in some cases, you might prefer to use the original MySQL…
How to Install and Setup 389 Directory Server on CentOS 7
389 Directory Server (previously Fedora Directory Server) is an open source enterprise class LDAP server for Linux. It is developed by Red Hat community-supported Fedora Project. The name 389 is…
How to Install and Setup Munin on CentOS 7
Munin is open source and free software for monitoring computer system, network monitoring and application infrastructure monitoring software. Munin offers monitoring and alerting for servers, switches, applications, and services. Munin…
How to Install Zimbra Patch on CentOS 7
Many have asked me, did Zimbra Collaboration (ZCS) 8.6.0 Patch4 will include Patch1 to Patch3? Actually, if you read the release notes document, the answer is there. ZCS patches are…
How to Setup a Login Banner on a Linux system
A login banner is a message displayed to users before they log into a Linux system via SSH or the console. It can be used for legal purposes, security warnings,…
How to Fix GNOME License Not Accepted Issue on CentOS 7
This post assume that you have just finished the Gnome GUI installation on CentOS 7 by using “yum groupinstall “GNOME Desktop” “Graphical Administration Tools” -y” command. Previously you are running…
How to Remove / Uninstall Nginx on CentOS 7 / RHEL 7 / Oracle Linux 7
Nginx is a popular web server and reverse proxy server, known for its high performance and low resource consumption. However, if you have decided to switch to another web server…