# OpenNebula Reviews **Vendor:** OpenNebula **Category:** [Infrastructure as a Service (IaaS) Providers](https://www.g2.com/categories/infrastructure-as-a-service-iaas) **Average Rating:** 4.4/5.0 **Total Reviews:** 10 ## About OpenNebula OpenNebula Systems develops the OpenNebula open source cloud and edge computing platform, offering a cost-effective alternative to VMware. Trusted by over 5,000 organizations, it supports deployments from small setups to large-scale infrastructures with thousands of hosts across distributed data centers. Backed by a global community, OpenNebula Systems provides enterprise support and services to optimize cloud and edge environments. With offices in the U.S., Spain, Belgium, and the Czech Republic, it specializes in turning open source into enterprise-grade solutions. ## OpenNebula Reviews ### 1. With OneKE utility, we can configure & deploy highly available K8 clusters in OpenNebula platform **Rating:** 4.0/5.0 stars **Reviewed by:** Ravi C. | Cloud Engineer, Information Technology and Services, Enterprise (> 1000 emp.) **Reviewed Date:** October 21, 2022 **What do you like best about OpenNebula?** OpenNebula platform helps us build & manage VM instances & Kubernetes clusters. It provisions a shared environment for both VMs and K8 clusters so that we can overview both workloads in a single pane of glass. It also manages the orchestration of front-end master nodes of the cluster & its infrastructure requirements. **What do you dislike about OpenNebula?** Its knowledge base requires focus since there are many complications while working with K8 clusters. It would be great to offer more details on its features & best practices so that we can pick up its platform quickly. Apart from this, we are good with services provided by the OpenNebula platform for VM deployments & cluster management. **What problems is OpenNebula solving and how is that benefiting you?** Our cloud infrastructure comprises several workload clusters which are located in multiple regions. It's pretty challenging to manage them without having a centralized platform such as OpenNebula. In less than 5 minutes, we can build a Kubernetes cluster, integrate sophisticated storage and deploy them easily. Its OneKE is a powerful & robust utility dedicated to automating multi-cluster operations. It also effectively isolates our resource pools to provide an additional layer for enhancing cluster security. ### 2. On Prem Cloud Infra **Rating:** 5.0/5.0 stars **Reviewed by:** Sudeep Narayan B. | System Analyst | Scientist B, Mid-Market (51-1000 emp.) **Reviewed Date:** January 17, 2023 **What do you like best about OpenNebula?** Its simplicity in understanding the nomenclature with regard to the integration of master and worker nodes, running of services, and mostly the marketplace. **What do you dislike about OpenNebula?** To the best of my knowledge, there is nothing to dislike; however, deployment documentation (as of 2017) could have been better for elastic or on-demand clouds. **What problems is OpenNebula solving and how is that benefiting you?** OpenNebula service helped to have the below: a) provisioning of different flavour OS templates along with individual software like CentOS, Ubuntu, Windows b) Use the templates to deploy VMs c) Sync with LDAP ### 3. OpenNebula User Review **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Enterprise (> 1000 emp.) **Reviewed Date:** July 29, 2022 **What do you like best about OpenNebula?** Very helpful platform to use for VM creation and works very smoothly New users can get started very quickly No formal training is required for new users Saves lot of cost in terms of Hardware **What do you dislike about OpenNebula?** New features support and catch up to new technologies Sometimes slowness is experienced by users while accessing some GUI forms etc But overall a great platform to work on **What problems is OpenNebula solving and how is that benefiting you?** We can spawn multiple VM's at once , hence we need not to buy multiple hardware servers Saves a lot of cost and Easy to delete/modify/upgrade the existing VM's ### 4. cloud computing **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Networking | Mid-Market (51-1000 emp.) **Reviewed Date:** October 05, 2019 **What do you like best about OpenNebula?** its simplicty , Documentation for OpenNebula Support Subscription Private Components,Tools to build OpenNebula packages **What do you dislike about OpenNebula?** its security mechanisms leaves a lot to be desired: requirement for a passwordless sudo account, CLI configuration stored as a plaintext **Recommendations to others considering OpenNebula:** work **What problems is OpenNebula solving and how is that benefiting you?** standing edge to edge in documentation for automation of retail outlets of indian oil and hpcl across india ### 5. Easy to launch VM from template **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** March 15, 2019 **What do you like best about OpenNebula?** Able to boot up VM from a template that IT has created in about 5 minutes. I am able to quickly monitor the status of systems and boot up or shut down them as needed. **What do you dislike about OpenNebula?** Cannot save my favorite templates to a home screen. **What problems is OpenNebula solving and how is that benefiting you?** Open Nebula allows our support and development teams to quickly boot up VM’s to replicate customer environments without having to work with dev ops or IT. ### 6. OpenNebula **Rating:** 5.0/5.0 stars **Reviewed by:** Mirian M. | OpenNebula, Mid-Market (51-1000 emp.) **Reviewed Date:** February 27, 2019 **What do you like best about OpenNebula?** It allows you to manage infrastructures in a fast and scalable way, you can also control, create virtual machines and you can monitor the services in the cloud. **What do you dislike about OpenNebula?** It is not widely used at present, lack of documentation. **Recommendations to others considering OpenNebula:** use it. **What problems is OpenNebula solving and how is that benefiting you?** server management, virtual machines, cloud monitoring ### 7. OpenNebula -- serious power from open source cloud **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Religious Institutions | Mid-Market (51-1000 emp.) **Reviewed Date:** July 26, 2018 **What do you like best about OpenNebula?** Reliable Powerful Open Source Easy to setup Nice UI **What do you dislike about OpenNebula?** Some what finicky operation Works best with higher end equipment, especially networking I need bigger servers! **Recommendations to others considering OpenNebula:** Get it now, its amazing! **What problems is OpenNebula solving and how is that benefiting you?** Private virtualization cloud to automated and manage a highly virtualized environment. Makes controlling dozens of VMs much easier. ### 8. Enhancing OpenNebula with OpenVZ containers support **Rating:** 3.0/5.0 stars **Reviewed by:** Dariusz C. | Senior Java Developer, Computer Software, Small-Business (50 or fewer emp.) **Reviewed Date:** January 09, 2016 **What do you like best about OpenNebula?** The great thing about OpenNebula is its simplicity. Comparing to other private IaaS solution that are open-sources (for instance OpenStack, CloudStack) it is much simpler to install and maintain. Similarly, due to its simply, plugin-based architecture developing a custom hypervisor driver was a breeze. The same applies to web console - it is clear, elegant and undoubtedly matches the latset UX trends. **What do you dislike about OpenNebula?** Sadly, the above-mentioned simplicity of OpenNebula doesn't mean that it is an elegant product. It surely has a lot of rough edges. For instance, its security mechanisms leaves a lot to be desired: requirement for a passwordless sudo account, CLI configuration stored as a plaintext. Besides, we found out that there are some 'hacks' in platform's core engine just to support some specific technology stack that should be rather provided as a well-though plugin mechanism. **Recommendations to others considering OpenNebula:** If you need a simple to use IaaS platform and have a small amount of compute nodes (i.e. hypervisors) to maintain pick OpenNebula. In more complex deployment you should probably consider more advanced but at the same time complex soltuions. **What problems is OpenNebula solving and how is that benefiting you?** We tried to leverage OpenVZ containers as a hypervisor in a IaaS platform. We choose the lightweight virtualization as it is more promising in terms of resource usage and efficiency. It is more suited to needs of creating a Platform-as-a-Service solution on top of IaaS what was focus of our work. We picked OpenNebula as a IaaS platform of our choice because we found that its learning curve is much more tempting than in other IaaS platforms available (OpenStack, CloudStack). ### 9. Versatile, Straightforward and Stable **Rating:** 4.0/5.0 stars **Reviewed by:** Jordan A. | Head of Product Development, Internet, Mid-Market (51-1000 emp.) **Reviewed Date:** January 08, 2016 **What do you like best about OpenNebula?** For me it's been the ease of use and reliability of the system. Installation and setup of our initial hosts were straight forward and then from there the ability to scale up across the infrastructure we created with such speed was definitely miles ahead of OpenStack (our first attempt at a private cloud) at the time of setup. Our aim has been to have our own AWS type infrastructure alongside it. **What do you dislike about OpenNebula?** I think there's some work to do with managing configuration of underlying hosts. It would be nice to have a faster route to scaling up and provisioning interfaces. **Recommendations to others considering OpenNebula:** If you want a straight forward access to a private cloud based IaaS then we have had very few issues scaling the VM and provision side of this product. **What problems is OpenNebula solving and how is that benefiting you?** Quick fire ability to scale our infrastructure as our application demands through automation. We had a lot of spare hardware that has been put to good use, instead of gathering dust it's helping us use every ounce of spare CPU cycles where needed. Less management through automation. ### 10. Sensible mid-scale IaaS cloud infrastructure management framework **Rating:** 4.0/5.0 stars **Reviewed by:** Boris P. | Cloud Specialist, Information Technology and Services, Mid-Market (51-1000 emp.) **Reviewed Date:** January 12, 2016 **What do you like best about OpenNebula?** Flexibility, extensibility, simplicity and clean-cut design fit for purpose. Easy to deploy and manage. Excellent community. Scales nicely for small to mid-range deployments (hundreds of hosts, thousands of virtual machines). Provides interfaces for beginners and advanced users. Can be used for data center management as well as private cloud deployments. **What do you dislike about OpenNebula?** Won't scale as well for very large deployments (thousands of hosts, tens of thousands of virtual machines). Rudimentary user management, ACLs and simplistic approach to authentication (not necessarily a problem, depending on the deployment environment). Misuses MySQL for document-centric data (XML) which impacts performance, data integrity and DB scalability. **What problems is OpenNebula solving and how is that benefiting you?** Providing primarily HPC (High-performance computing) cloud services and prototyping environments for developers and testers. Framework also doubles as a tool for internal data center management. Excellent for environments requiring a lot of integration and customization as well as out-of-the-box deployments. - [View OpenNebula pricing details and edition comparison](https://www.g2.com/products/opennebula/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-14+21%3A43%3A24+-0500&secure%5Bsession_id%5D=7558e3d6-5157-4d71-a0d4-adde86977728&secure%5Btoken%5D=3f954022a57db700e9253cc238ded751cea1ea1385feb9bde82f7e8ae7d92b12&format=llm_user) ## OpenNebula Features **Infrastructure Provision** - Public Cloud - Private Cloud - Hybrid Cloud - Bare Metal - High-Performance Computing (HPC) - Virtual Machines (VMs) - Edge Computing - Virtual Networks **Management** - Pay by Usage - Usage Tracking - Performance Tracking **Functionality** - Resource Auto-Scaling ## Top OpenNebula Alternatives - [OpenStack](https://www.g2.com/products/openstack/reviews) - 4.2/5.0 (52 reviews) - [Apache CloudStack](https://www.g2.com/products/apache-cloudstack/reviews) - 4.4/5.0 (25 reviews) - [DigitalOcean](https://www.g2.com/products/digitalocean/reviews) - 4.6/5.0 (735 reviews)