How to Reset the Directory Manager Password on RHEL 7 / CentOS 7
It is best practice to remember passwords, but because too many passwords, sometimes we forget. We are not encouraged to write the password on any paper or share the password…
How to Find Big Files Size on Linux RHEL/CentOS
As the linux administrator, sometimes we have to identify which files are most take much space in the linux server resulting in low free space. Low disk space can also…
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 Update CentOS or Upgrade CentOS to the Latest Version
Recently, the latest version of CentOS 7.3 was released. All users of CentOS 7.0, 7.1 and 7.2 can upgrade their system to the most recent. This quick guide will explain…
How to Change your WordPress Username, Nickname and Display Name in MySQL
After you create an account log in WordPress, you may want to change your WordPress username, as appropriate or due to security reason. However, you can not do this from…
How to Enable SSH Root Login on Ubuntu 16.04
As what we wrote in the previous article on how to allow SSH root on Ubuntu 14.04, after installing a fresh new copy of Ubuntu 16.04 LTS, we find that…
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 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 Migrate LVM or Volume Group to New Linux Server
This article will describe on how to move or migrate LVM and volume group from one server to another. If you are working in a production environment then you have…
How to Change default runlevel in CentOS 7 / RHEL 7
In CentOS 7 and RHEL 7, the systemd process replaces the init process for starting services at boot time and also for changing the runlevels. It uses “targets” instead of…
How to Disable IPv6 on Redhat / CentOS 6 / CentOS 7
This howto will show you how to disable IPv6 on RHEL 6/7, CentOS 6, and CentOS7. IPv6 is enabled by default. In this article, I summarize 3 configuration which needs…