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
While enabling SSH root login on Ubuntu 16.04 is not recommended due to security risks, there might be situations where you need temporary root access via SSH. In this guide,…
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 Shut Down or Reboot Solaris Server
Solaris, a server operating system, is designed to run continuously, ensuring the services it offers are always accessible. However, there are instances where a system administrator may need to shut…
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 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…
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…