Error starting Guest Machine in Virtual Machine Manager because Failed to connect socket to ‘virtlogd-socket’

This article is created to discuss on handling error arises whenever Virtual Machine Manager has already successfully installed. It is actually happened when further editing process of a configuration file has already done to define nested virtualization.

The configuration file is edited in order to aim nested virtualization where in the Guest Machine runs inside Virtual Machine Manager, it will  create another Guest Machine. That is where the ‘nested virtualization’ comes. See the article titled ‘Configure KVM for Nested Virtualization‘.

After configuring Host Machine which is responsible for running Guest Machine using Virtual Machine Manager, there is an error starting instance or Guest Machine in Virtual Machine Manager shown as follows :

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Create New Guest Machine in Virtual Machine Manager

In this article, creating a new Guest Machine in Virtual Machine Manager will be described in several steps. Guest Machine is a term which is used to point out to the virtual servers runs.

Those virtual servers or virtual machines which is generally manage by a specific purpose software. It is a software aim to manage virtual servers or virtual machines and for an example one of them is the Virtual Machine Manager.

After successfully installed Virtual Machine Manager which is also known as virt-manager, the management of guest machine or virtual server in detail such as the tasks of creating, deleting, editing, running and stopping the guest machine or virtual server can be easily done in it.

To create a new Guest Machine, below is the step execute :

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Samba Linux Test Configuration File Command

This is another article discuss on testing samba configuration file. To be able to change the original samba file configuration, it is a wise decision if the step executed for the first time is backup the original file by duplicating it into another file.

After duplicating the file into another file name, the original file of samba configuration can be edited. Below is the process of executing it :

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Mounting Linux or Windows Folder and File Share into Local Mount Point with Unique Password Character

This is an article which is used to describe about how to mount file and folder sharing which is defined in Windows operating system. A host which is installed Linux operating system variant can use ‘mount’ command to be able to mount it.

Imagine if the file and folder sharing defined in Windows system operating system need  to be mounted in Linux using mount command from the command line.

Usually, a default username which can be used is ‘Administrator’ for gaining full access. But how can it by executed in the command line if the password of the ‘Administrator’ account has a unique or a symbol character in it ?. Well, by preceeding the character with the ‘\’ backslash sign, the unique or the symbol character will be considered as just a mere normal character.

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Create Controller in Laravel using command

How to create a new Controller in Laravel Framework  web-based application ?. It is actually quite easy and it can be done in a several ways. In my opinion there is two ways to done it :

1. The first one is manually create the Controller file.

This step requires everything to be done in manual. Several tasks need to be done in order to accomplish this step. Below are the sequence of the steps :

Create a new File in controller folder of Laravel web-based application. It exists in app/Http/Controller and the execution can be done from the command line by typing the following command :

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Install KVM and Libvirt on CentOS 7

In this article, scenario which is used is a ‘nested virtualization’. Read this article titled ‘Configure KVM for Nested Virtualization‘ for more information about it. This is a virtualization type which is an installation of a virtual machine or guest machine inside another virtual machine or guest machine.

For a guest machine which is already run inside a virtual server management such as Virtual Machine Manager, VMWare Workstation, etc, it can also serve as a new Host Machine so that it can achieve its purpose to run another Guest Machine inside.

For that purpose, in the Guest Machine which is trying to be configured to run as Host Machine, the Guest Machine itself is needed to be installed some important packages such as KVM and Libvirt.

In this article, below are descriptions and explanations for the steps which can be taken to be implemented  CentOS 7, below are:

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Configure KVM for Nested Virtualization

This article discuss on configuring a Host Machine installed with KVM as its Virtualization Technology used can can perform ‘Nested Virtualization’.

KVM (Kernel-based Virtualization Machine) is a hypervisor which is responsible for orchestrating the Guest Machines available and runs in a Host Machine.

An amazing things to do when using KVM as the virtualization technology used in a physical server as a Host Machine is the Guest Machine created can be nested.

A Guest Machine can be created and runs inside another Guest Machine and the feature for implementing it is known as the term of ‘Nested Virtualization’. This is the image of the scenario which is going to be achieved :

configure-kvm-for-nested-virtualization
Configure KVM for Nested Virtualization

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