Tag: centos

Installing docker with Ubuntu 16.04 LTS, Mint 17 and CentOS 7

Installing docker with Ubuntu 16.04 LTS, Mint 17 and CentOS 7 A brief introduction to virtualization Today we will learn installing docker with Ubuntu, mint and CentOS 7 Linux,  Before the evolution of the concept of virtualization, to run one application one dedicated server was required,  if you wanted to 

Understanding Containers, user space, userland and kernel space

Perhaps you’ve been charged with developing a container-based application infrastructure?  If so, you most likely understand the value that containers can provide to your developers, architects, and operations team. In fact, you’ve likely been reading up on containers and are excited about exploring the technology in more detail. However, before

Setting up PPTP VPN server on CentOS Server

Setting up PPTP VPN server on CentOS Server There are 3 basic types of VPN servers: Point-to-Point Tunneling Protocol (PPTP), Layer 2 Tunneling Protocol(L2TP) and OpenVPN. (Yeah there are more but let’s deal with the basics here). In this post I will use PPTP as it’s supported by almost all devices and OSes

Centos Recover broken rpmdb or missing packages

Centos Recover broken rpmdb or missing packages Did you ever encountered broken rpmdb ? Missing packages, filesystem corruption at /var/lib/rpm and ran out of backups or a restore isn’t possible ? You can fix it in Centos Recover broken rpmdb or missing packages  and on other RHEL based systems too.

Configure FirewallD in RHEL/CentOS 7 and Fedora 21/22

In a previous post I’ve showed how to disable firewalld and roll back to our favorite post-systemd iptables firewall. In this post we gonna see how to Configure FirewallD in RHEL/CentOS 7 and Fedora 21/22. Firewalld is a dynamic daemon to configure and manage firewalls (iptables rules typically) with support

Enable Apache UserDir In CentOS 7 / RHEL 7 with SELinux

Lets show you how to install userdir for Centos 7 with Selinux Enabled. In this method all users should have their own public_html directory. 1. Go to root user su – root 2. Create /etc/httpd/conf.d/userdir.conf file Install apache:  yum install httpd -y Enable Apache Userdirs vi  /etc/httpd/conf.d/userdir.conf add: <IfModule mod_userdir.c> #

Disable a Firewall In Red Hat Enterprise Linux / CentOS

Disable a Firewall In Red Hat Enterprise Linux / CentOS RHEL 6.x and beyond: A Linux firewall is an integrated collection of security measures designed to prevent unauthorized electronic access to a networked computer system. Red hat Linux kernel has firewall called iptables. It can be disabled by typing following