How to Install and Update OpenSSL on CentOS 6 / CentOS 7

I have CentOS 6 server and still running with OpenSSL 1.0.1e (openssl-1.0.1e-30) that vulnerable to a remote attacker to access parts of memory on systems using vulnerable versions of OpenSSL. OpenSSL is a library that provides cryptographic functionality, specifically SSL/TLS for popular applications such as secure web servers (nginx web server, Apache web server) and […]

How to Install EPEL Yum Repository on Linux CentOS 7 / RHEL 7

Epel yum repository is an open source centos yum repository or rpm repository for developers and system administrators to perform the installation of RPM packages via yum on their virtual private server (VPS) or dedicated server. EPEL yum repository is redhat yum repository for CentOS and additional yum repository for the existing CentOS repository. It […]

How to Remove / Uninstall Nginx on CentOS 7 / RHEL 7 / Oracle Linux 7

Nginx web server is alternative web server to Apache and Lighttpd. Nginx popularity now growing because it focuses on high concurrency, high performance while maintaining low memory usage. However, due to certain reasons webmaster or system administrator can not use Nginx on their server and decide to uninstall Nginx. Most of the webmaster, administrator and […]

How to Grant a New User to Root Privileges on CentOS 6 / CentOS 7

One recommended way to manage virtual private server (VPS) or a dedicated linux server is not using the root account as the main access for SSH login. This is because usually the hackers will try to brute force your root password and potentially get access to your server. Instead of using the default root account, […]

How to Create LVM in Linux CentOS 7 / RHEL 7 / Oracle Linux 7

Storage technology plays a important role in improving the availability, performance, and ability to manage Linux servers. One of the most useful and helpful technology to linux system administrator is Linux Logical Volume Manager(LVM), version 2 (or LVM 2). LVM is a widely-used technique and extremely flexible disk management scheme for deploying logical rather than […]