[Ubuntu]: configure: Torque needs Boost, but it was not found on your system
I encountered the below error message saying Boost needs to be installed during Torque PBS installation on Ubuntu 18.04 server....
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Fix broken sudoers file – sudo: parse error in /etc/sudoers near line 21 [Ubuntu]
While providing sudo permission to a specific user did a mistake, saved and closed it before I realize. Later when...How to Allow SFTP and disallow SSH?
In this tutorial, I will explain how to configure SSH to allow SFTP and disallow SSH login access. Solution: Well, SFTP...Install PHP 7 on a fresh Ubuntu VPS: [Fix] Unable to locate package PHP
Recently one of my client provided a fresh VPS and asked me to install PHP 7, Apache and MySQL. While...OpenStack Compute Error – No compute node record for host [Solved]
OpenStack compute Error: Though the compute hosts had nova-compute service listening, those nodes were not displayed when ‘nova hypervisor-list‘ command...Error in Sudoers file? Here’s how you can fix it.
It’s quite common for an administrator to edit sudoers file and allow users to execute administrative commands. But what if...How to Configure virt-manager for Nested Virtualization Support?
Question: I have installed KVM hypervisor on my Debian Guest OS (basically a nested virtualization) which is hosted on a...msfconsole error after updating Metasploit Framework in Kali Linux [Solved]
Updating Metasploit is quite easy – you just need to run msfupdate command. Later, you might have to be prepared...How to Identify the Package version before Installing using a apt-get or aptitude in Ubuntu?
Few days ago, I wrote an article on yum commands that allows you to know the version of the package...Issue: IP address in Ubuntu gets cleared automatically after sometime [Solution]
Question: I have set an ip address for eth0 interface in Ubuntu and it worked for a while. But after...How to Fix libpci header check failed. Disable KVM Device Assignment capability?
Question: I got an error “libpci header check failed. Disable KVM Device Assignment capability” while compiling qemu-kvm package on Ubuntu...How to Fix apt-get Failed to Fetch error in unsupported Ubuntu releases
For one of my project, I need to install an older version of Ubuntu (11.10 oneiric release). But apt-get failed...Fix Error: libpci check failed. Disable KVM Device Assignment capability [Solved]
Question: I was stuck with an error “Error: libpci check failed. Disable KVM Device Assignment capability” while compiling qemu-kvm package...How to use Auditing System in Linux – Configure, Audit Logs and Generate Reports
Before we start discussing about the Auditing system, I would like to ask few questions. How do you monitor the commands...How to Fix – Sudo unable to resolve host in Ubuntu?
If you getting an error “Sudo unable to resolve host” while executing sudo command in Ubuntu, then here’s how you can...How to start a VM on a Specified Host/Compute Node in OpenStack Mitaka?
With the appropriate permissions, the user can launch VM on a specified host/compute node in OpenStack Mitaka. All you need to...Why does OpenStack report Hypervisor type as QEMU when libvirt_type is KVM?
I installed OpenStack Mitaka and was curious to check various features in horizon dashboard. For instance, the System > Hypervisors...OpenStack Dashboard Installation Error – error processing package openstack-dashboard-ubuntu-theme [Solved]
While installing OpenStack Mitaka horizon module, I was stuck with an error processing package openstack-dashboard-ubuntu-theme. Below is the snapshot of the...OpenStack Error – Index column size too large. The maximum column size is 767 bytes [Solved]
If you are getting an error while syncing or populating database of services such as Keystone, Glance, Nova and Neutron, then...How to Fix Package installation error – Unable to correct problems, you have held broken packages
Question: I was installing few OpenStack packages on Ubuntu 14.04.4 LTS and landed up with an error Unable to correct...