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.
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 affect server performance and sometimes cause critical processes such as backup job to fail.
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 […]
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 the steps you need to update CentOS or upgrade CentOS to the latest version.
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 the WordPress administration console.
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 once again (for better security) ssh root access has been configured to “prohibit-password” by default. This prevents root login via SSH.
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.
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 […]
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 to know about the software disk management and all the methods to provide flexibility in storage management. LVM stand for logical volume management. It is […]
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 run-levels and relies on systemctl command to change runlevel or to change the target. The systemd provides much more control than the init process does […]
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 to be changed to completely disable ipv6. Check the configuration of the existing network with the “ifconfig” command. If inet6 appears in the configuration, means […]