In OpenStack terminology, Availability Zones (AZ) is defined as a logical partition of compute(nova), block storage (cinder) and network Service (neutron). Availability zones are required to segregate the work load of environments like production and non-production, let me elaborate this statement. let’s suppose we have … Read more
Managing Disk quota on file systems is one of the most common day to day operation tasks for Linux admins, in this article we will demonstrate how to setup disk quota on XFS file system / partition on Linux Servers like CentOS, RHEL, Ubuntu and … Read more
Let me start by explaining what a container is, it is normal process on the host machine (any Linux based m/c) with following characteristics, It feels like a VM, but it is not. Uses the host Kernel. Cannot boot a different Operating System. Can’t have … Read more
Hello All!!!, Good to See you! So we saw how to install Debian 10(Buster) in the previous article. Today, we are going to learn how to upgrade from Debian 9 to Debian 10. Since we have already seen about Debian 10 and its features, let’s … Read more
Generally, all Linux administrators use history command to track which commands were executed in previous sessions, but there is one limitation of history command is that it doesn’t store the command’s output. There can be some scenarios where we want to check commands output of … Read more
KVM is an open source virtualization technology which converts your Linux machine into a type-1 bare-metal hypervisor that allows you to run multiple virtual machines (VMs) or guest VMs KVM stands for Kernel based Virtual machine, as the name suggests KVM is a kernel module, … Read more
There are some scenarios where we want to assign multiple IPs from different VLAN on the same Ethernet card (nic) on Linux servers (CentOS / RHEL). This can be done by enabling VLAN tagged interface. But for this to happen first we must make sure … Read more
In this post, we will explain how to set ulimit and file descriptors limit in Linux. Challenges like number of open files in any of the production environment has become common now a day. Since many applications which are Java based and Apache based, are … Read more
In this article, we’ll be looking at how to install LEMP stack on Fedora 30 Server. LEMP Stands for: L -> Linux E -> Nginx M -> Maria DB P -> PHP I am assuming Fedora 30 is already installed on your system. LEMP is … Read more
Ansible is tool of choice these days if you must manage multiple devices, be it Linux, Windows, Mac, Network Devices, VMware and lot more. What makes Ansible popular is its agent less feature and granular control. If you have worked with python or have experience … Read more
As a continuation of Part-1, this part-2 has remaining features of Portainer covered and as explained below. Monitoring docker container images shashi@linuxtechi ~}$ docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 9ab9aa72f015 ubuntu “/bin/bash” 14 seconds ago Exited (0) 12 seconds ago … Read more
Recently Red Hat has released its most awaited operating system “RHEL 8“, in case you have installed RHEL 8 Server on your system and wondering how to setup local yum or dnf repository using installation DVD or ISO file then refer below steps and procedure. … Read more
