Using screen command to share session on Linux system

Lets take a look at how to share existing ssh session using command called screen. It is very useful in case where you have to show your users something remotely. First install screen program – We assume CentOS7 yum install screen System1 You can create multiple screen sessions or share existing on Create multiple screen…

Using Vagrant, VirtualBox and Ansible with CentOS 7

This would be the case when you need to test playbooks locally before using Ansible to deploy them. We assume you already have installed Vagrant, Ansible and VirtualBox. Ansible is one of many provisioners integrated with Vagrant. Lets see how it works Create Vagrant box with CentOS 7 mkdir centtest cd centtest sudo vagrant init…

Installing and using docker CentOS7

We will not cover what docker does and how it works. We assume you already familiar with basic concepts. We will look into basics of installing and operating docker on CentOS 7. We will be looking into CE )(Community Edition) Installation We will go over install using repositories yum install -y yum-utils device-mapper-persistent-data lvm2 yum-config-manager…

Installing and using LXC Containers on CentOS 7

LXC allows us to share Linux kernel to run application in something similar to chroot environment. Lets take a look at how to install and manage LXC on CentOS 7. Containers reside in /var/lib/lxc/ directory Installation yum install epel-release yum install debootstrap perl libvirt yum install lxc lxc-templates systemctl start lxc.service systemctl start libvirtd systemctl…

Install latest version of apache, mariadb and php on CentOS7

In one of out previous tutorials Install LAMP on CentOS we looked at installing LAMP on CentOS 7. Although this type if installation is fine for most of the deployments, in some cases you want to get the latest version of LAMP components. In most cases we will want to do this due to security…

Mining litecoin with cpuminer

Lets look at how we can mind litecoin with cpuminer and litecoinpool. 1. Go to www.litecoinpool.org website and create an account. 2. Install cpuminer # apt-get update # apt-get install libcurl4-openssl-dev git # apt-get install build-essential # apt-get install autotools-dev autoconf # apt-get install libcurl3 libcurl4-gnutls-dev # apt-get install automake # mkdir /downloads # cd…

Deploy AWStats on CentOS 7 to report SMTP traffic

Let’s look at deploying AWStats on CentOS 7 Mail gateway running postfix and MailScanner 1. First lets install httpd if not yet installed yum install httpd 2. In order to install AWStats we will need to install and add EPEL repository yum install epel-release 3. Now we can install AWStats yum install awstats AWStats Configuration…

Manage Time service on RH and CentOS 7

When Linux system first boots the hardware clock is read first. The time on the hardware clock read from local hardware clock in UTC – Universal Time. Local time is the actual time in the current time zone. System time, unlike Hardware clock maintained by operating system. System clock is completely independent of the hardware…

Setup SFTP on UBUNTU 16.x with Active Directory authentication

In this tutorial we will look into setting up sftp server for users on Ubuntu 16 which will be authenticating through Active Directory. This will be a two step process consisting of first connecting Ubuntu server to Active Directory and then setting up SFTP for AD users.