Old method to change the runlevel via /etc/inittab in Redhat Enterprise Linux version and CentOS server has become obsolete on RHEL 7 and CentOS 7. This latest Linux operating system uses systemd system management daemon and relies on systemctl command in order to change the runlevel. RunLevel is set with linking to /etc/systemd/system/default.target. Please make […]
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 […]
This article describes how to install and configure multiple WordPress sites on Nginx and the steps have been prepared based on CentOS 7.0 and Nginx 1.6.3. NGINX (pronounced Engine ex) is an open source high performance web servers and able to handle large number of concurrent connections. It has the lowest memory footprint if compared to […]
Enable SSH server on a virtual private server (VPS) will expose the server to the internet and provide opportunities for hacking activities, especially when VPS still using root as a primary access. VPS should be configured with a email alert automatically to each successful login attempts via SSH server . VPS server owner shall be […]
Brute-force break-in attempts are quite frequent against the SSH server. However, there is an open source software that can help you deal with this problem automatically, namely fail2ban. Fail2ban provides a way to protect private virtual server( VPS ) from malicious behavior by intruders or hackers automatically. This program works by scanning through log files […]
Logical volume management (LVM) is a widely-used technique and extremely flexible disk management scheme. It basically contain three basic command : a. Creates the physical volumes using pvcreate b. Create the volume group and add partition into volume group using vgcreate c. Create a new logical volume using lvcreate The following examples focus on the […]
Question. Many of the system administrator asked whether they need to install Open-VM-Tools package or VMware Tools package that ships with ESX/ESXi VMware products. Answer. VMware Tools is a suite of utilities that enhances the performance of the virtual machine’s guest operating system and improves management of the virtual machine. –How to Install Vmware-tools for […]
This article will describe the procedure to configure static Ip address on RHEL 7/CentOS 7/Oracle Linux 7 minimal installation. Network interface configuration files control the software interfaces for individual network devices. As the system boots, it uses these files to determine what interfaces to bring up and how to configure them. These files are usually […]
Question : I have just setup on RHEL 7.0/CentOS 7.0/Oracle Linux 7 minimal server installation but i notice ifconfig and netstat command not found. How to make those command available ? Solution : By default, ifconfig and netstat utility is not installed on RHEL 7.0/CentOS 7.0/Oracle Linux 7 minimal server installation. You need to install […]
By default, the linux operating system manages 65536 ports. If you run Virtual private Server (VPS) on linux platform, it is better to turn off any services or ports that you don’t actually need. This is to ensure your VPS server will not become avenues of attack for any security threats. Simply run these commands […]
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