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 via email. This can lead to more serious security issues.
This article will explain the steps to reset a lost root password or to reset forgotten root password on Linux RHEL 7 or CentOS 7. Basically, the steps will adding a “rd.break” to the end of the line with kernel parameters in Grub to stops the start up process before the regular root filesystem is […]
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 information of UUID for the filesystem will be identical for the original and cloned copy, therefore the UUID is no longer unique in /etc/fstab. The […]
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 the low memory consumption when using Nginx as a web server, it has a fast performance. When you combine Nginx and FastCGI Caching module, you […]
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, Google chrome and Firefox. The example of web server are apache web server, IIS web server, Nginx webserver and litespeed web server.
In this quick guide, i will show you how to install MYSQL on CentOS 7 / RHEL 7 / Oracle Linux 7 instead of MariaDB. MariaDB is the default implementation of MySQL in Red Hat Enterprise Linux 7 (RHEL 7) or CentOS 7. MariaDB is a community-developed fork of the MySQL database project, and provides […]
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 derived from the port number for LDAP. In this article we will guide you through the steps on how to install and setup 389 directory […]
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 can help system administrators to analyze the trend of the computer system whether it is experiencing problems or not. It can be an easier alternative […]
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 cumulative, meaning ZCS 8.6.0 Patch4 includes ZCS 8.6.0 Patch3, ZCS 8.6.0 Patch2 and ZCS 8.6.0 Patch1. These patch release notes provide information about the Zimbra […]
Most system administrators have applied linux login banner on their servers. The purpose of this linux login banner is to show some messages or warnings when ssh session connected and before entry. The message displayed in the linux login banner is dedicated either to the system administrator who wants to perform routine system maintenance or […]
This article will explain and share how to add and remove user account with useradd(add) and userdel (remove) from the command-line on linux RHEL 6/7, CentOS 6/7, Oracle Linux 6/7 server. 1. Adding a New User to an Linux System. a) Get the useradd manual : # man useradd useradd – create a new user or […]
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 a minimum CentOS 7, only with command line via terminal. But after you reboot the server you get the following screen. Initial setup of CentOS […]
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