How to Install MySQL v5.7 using apt-get on Debian 8 Jessie
This tutorial will explain how to install MySQL v5.7 on Debian 8 Jessie server. The default repositories in Debian 8 will...
Linux
M2Crypto SSL Check Error: Peer certificate subjectAltName does not match [Solved]
Question: I’m stuck with M2crypto SSL check error while installing Webmin package on RHEL 5.5. Here’s the complete error message: #...Using Sed,ex & perl commands to find and replace a text in Linux
Question: I would like to replace a text with a link in anchor tag of a html file. The challenge is...How to install PHP 7.1 on GNU/Linux Debian 8.7 (jessie) server?
This tutorial will explain how to install PHP and its dependent packages on GNU Linux. If the Linux is installed...OpenStack Fake Driver for Cloud Simulations [Tutorial]
OpenStack is a popular cloud operating system that allows you to control large amount of compute, storage and networking resources....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...OpenStack VM Launch Error – Last exception: Binding failed for port [Solved]
Error: “Exceeded maximum number of retries. Exceeded max scheduling attempts 3 for instance <instance_id>. Last exception: Binding failed for port....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...How to Fix Error – qemu: could not load PC BIOS ‘bios.bin’?
Question: I have configured qemu-kvm on Ubuntu machine and got a qemu error – ‘could not load PC BIOS bios.bin‘...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 OpenStack Error – Failed to delete network? [Solved]
OpenStack Horizon allows you to configure network, subnets, routers etc…It also allows users to delete network with a click of...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 yum to install a specific version of a Package?
If you ever want to instruct YUM to install only a particular version of a package, then here’s how you...How to Create Kali Linux Image in QCOW2 format for OpenStack?
If you ever wanted to try Kali Linux in OpenStack, then you have landed on the right page. In this...How to Extract 7z package in CentOS/RHEL/Fedora?
Are you stuck in extracting .7z file in Linux? Then here’s how you can install 7z extractor in CentOS, RHEL...Failed to start PostgreSQL database server – Unregistered Authentication Agent for unix-process [Solved]
Question: I got an error ‘Failed to start PostgreSQL database server – Unregistered Authentication Agent for unix-process‘ while starting PostgreSQL...