At home Lab I came across this error while adding a previously used Windows disk to ESXi. It appears half way while adding the disk via “Add Storage Wizard”. The error can be resolved by formatting the disk in DOS format using Parted utility inbuilt into…
Its best to secure /etc/fstab as it contains all the mount locations and can lead to boot issues if any novice person tinkers/plays around with it. The secure mode can only be enabled /disabled by root user only and completely secure. There is a simple one line…
Its possible add a LVM volume on the fly. The steps would involve formatting the newly added disk with LVM and creating a mount point and adding the new volume to it. The whole process would involve creating Physical Volume followed by Volume group and then assigning…
Its possible to add a disk dynamically (without reboot) in a Linux host in Virtual Environment by following some simple steps in this article. In a Virtualized world there is a frequent requirement for adding extra disks/space on the fly, as and when required with…
In Linux when you try to SSH it may at times give you this warning that REMOTE HOST IDENTIFICATION HAS CHANGED. It usually happens when the hostname or IP has changed of a host or the host was rebooted and generated a new fingerprint Key ID. No need to worry, it can…
This article shows you the steps to install Spacewalk 2.2 (aka Satellite) version on CentOS. To start with the install we need make sure that firewall and hostname and IP are configured correctly. Make sure that these ports are opened in the firewall. Ports…
There might be a need to Change SUDO LDAP password whilst managing the SUDO rights centrally through IDM. In this scenario it would be the 1st time you are configuring the SUDO rights. Follow the steps outlined to change the password for master server. NOTE:…
This article shows you How To register Spacewalk Clients to the Spacewalk Server. All you need is to make sure before the registration you are logged in as ROOT and the SSL Cert is downloaded from the server to the client host. There is a Once Click BASH SCRIPT as…
Setup and Configuration guide for Nagios Core on any Fedora/Linux based OS (incl. CentOS & Red Hat). This guide would allow you to setup Nagios Monitoring Server up and running in roughly 15 mins. The process would involve installing yum packages and then…
Its now possible to install latest Nagios CORE version on Raspbian by following the steps in this article. Before writing this article I Googled for the same but couldn’t find a single article covering install of latest version of Nagios on RasberryPi hence this…