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The increasing complexity of cloud computing has prompted a greater emphasis on protecting the privacy, integrity, and security of data stored and processed in the cloud. Data privacy is safeguarded through access control, but existing models such ...

The major cloud computing software companies offer a new concept, on which resources are virtualised to provide these as a service on the internet. Currently, there are multiple service providers, and additional options to virtualise services on-...

Modern software systems are designed to be deployed in different configured environments (e.g., permissions, virtual resources, network connections) and adapted at runtime to different situations (e.g., memory limits, enabling/disabling features, database ...

OpenStack is versatile and popular, allowing full customization for creating private or public IaaS clouds. This work addresses a network traffic analysis and characterization for the management domain inside OpenStack clouds. We conduct an ...

With the development of cloud-edge collaborative computing, cloud computing has become crucial in data analysis and data processing. OpenStack and Docker are important components of cloud computing, and the integration of the two has always ...

Cloud computing systems fail in complex and unforeseen ways due to unexpected combinations of events and interactions among hardware and software components. These failures are especially problematic when they are silent, i.e., not accompanied by ...

• The approach performs run-time verification without using session IDs.
• The approach improves the failure detection of the OpenStack cloud computing system.
• The approach can be used in combination with the system failure logging ...

Nowadays, Network Function Virtualization (NFV) is a growing and powerful technology in the research community and IT world. Traditional computer networks consist of hardware appliances such as firewalls and load balancers, called ...

• Analyzed and highlighted existing Virtualized Infrastructure Managers (VIMs) with NFV Orchestration (NFVO) and VNF Management (VNFM) operations.

Background: Technical Debt (TD) refers to the situation where developers make trade-offs to achieve short-term goals at the expense of long-term code quality, which can have a negative impact on the quality of software systems. In the context of code ...

The paper presents the cost and performance analysis of parallel MPI-based software as a service (SaaS) deployed on the OpenStack cloud infrastructure. The parallel SaaS was developed by using C++ programming language and MPI library for the ...

Technical collaboration between multiple contributors is a natural phenomenon in distributed open source software development projects. Macro-collaboration, where each code commit is attributed to a single collaborator, has been extensively ...$$$$$$

Smart meters are increasingly a part of everyday households. These smart meters allow remote reading of the energy but also remote disconnection of the point of consumption from the energy supply. As these devices are part of the critical infrastructure ...

Code review is a mature practice for software quality assurance in software development with which reviewers check the code that has been committed by developers, and verify the quality of code. During the code review discussions, reviewers and ...

In this work, we present a novel fault injection solution (ThorFI) for virtual networks in cloud computing infrastructures. ThorFI is designed to provide non-intrusive fault injection capabilities for a cloud tenant, and to isolate ...

The availability of cloud services is an important performance index of cloud platform. It is the premise and basis for a cloud platform to provide services. Aiming at the problem of insufficient reliability of cloud services in university data centers, ...

Cloud auto-scaling mechanisms are typically based on reactive automation rules that scale a cluster whenever some metric, e.g., the average CPU usage among instances, exceeds a predefined threshold. Tuning these rules becomes particularly cumbersome ...

OpenStack is an open source cloud computing management project, which allows flexible resources applying. The traditional OpenStack dashboard is inflexible, thus a simple dashboard is designed. The simple dashboard integrates keystone, horizon, grace, ...

Identifying the failure modes of cloud computing systems is a difficult and time-consuming task, due to the growing complexity of such systems, and the large volume and noisiness of failure data. This paper presents a novel approach ...

• The approach aids to develop the fault-tolerance mechanisms in the cloud systems.

The cloud computing has inherent challenges to detect the Hyper Text Transfer Protocol (HTTP) flooding Distributed Denial of Service (DDoS) attack due to its natural characteristics like virtualization, elasticity and multi-tenancy. The usage of ...

In Cloud computing deployments, specifically in the Infrastructure-as-a-Service (IaaS) model, networking is one of the core enabling facilities provided for the users. The IaaS approach ensures significant flexibility and manageability, since the ...

This paper deals with the use of cyber range in education to teach cybersecurity. Particular attention is paid exclusively to open-source solutions, as such solutions are available to the general public, which is essential in raising awareness of cyber ...