OpenNebula Reviews

OpenNebula is the core of our cloud offering. We propose virtual resources to our customers. We have several zones grouped into an OpenNebula Federation to serve more than 50 customers. Some customers use a global infrastructure with dedicated VMS running on shared hosts. Some customers with specific needs and more VMs are deployed on dedicated nodes. Only their VMs run on these nodes.
This very simple model is really appreciated by our valuable customers, it was very simple to set thanks to OpenNebula's cluster feature.

OpenNebula is really simple to manage and very reliable.

It makes maintenance very easy and stress-free for our teams. It helped us to propose strong Cloud features with a very simple and flexible solution.

In five years we didn't have an incident related to OpenNebula software. This is really appreciated by our customers.

For maintenance, we can easily balance load between nodes thanks to automation features offered by OpenNebula. We can manage our cloud with very few operators to focus on other business topics.

NodeWeaver's GUI is based on the OpenNebula platform, and I use OpenNebula to interface into the NodeWeaver product set.

The most valuable feature of OpenNebula is that it scales very well.

We use OpenNebula to set up a virtual private cloud across several physical servers. It has an XML-RPC API that we automate via Python. You can connect it to VMware and run it over KVM. The latest version supports containers, but I haven't tried that. I mostly do KVM-based virtualization. I think the whole company is using it, so we have around 260 users. 

The OpenNebula Marketplace provides you with several relatively large images. It's similar to the AWS console where you can download images from the Marketplace. You can choose an image and adapt it to your use case.

I also like the ability to build custom functions. I can define a function where I have two types of views and configure the dependencies. The virtual data centers concept allows me to define users. If a user wants to join certain kinds of machines, the host and the other user won't see them. It gives me the flexibility to define multiple views and data centers in one place.

Previously, we were using VMware, but recently, we've started using OpenNebula for cloud management. As a big cloud provider, it helps give customers increased control over their clusters. We use Linux with KVM as a provider and measure all the data centers with OpenNebula. We have installed OpenNebula on just one or two machines, but a larger cloud might require more.

OpenNebula is used to create and manage virtual machines. We prefer using OpenNebula as it offers more flexibility. For example, one project required using specific routers and tenants and OpenNebula was very helpful. As for integration capabilities, it's easy to integrate OpenNebula with our IT systems.

We run on a SaaS platform with millions of end users; our entire platform runs on OpenNebula VMs in colocation data centers. At peak usage we had roughly 3000 individual virtual machines running, all VMs were Linux. Our company has built multiple independent OpenNebula clusters.  

We leverage the OpenNebula "cluster" features as well to segment different workloads and security requirements.  

We do use the web interface for small tasks, however, we mostly leverage the API, SDK, and custom-built Ansible modules to interact with the OpenNebula server.

OpenNebula and virtualization, in general, have helped us increase compute density, better secure our workloads, and automate the deployment of our various applications.  

Our workloads must be segmented due to security requirements and business objectives. Virtualization, in general, has enabled us to satisfy those requirements.  

OpenNebula is mostly written in Ruby, which was one of the reasons we picked this product over the competitors. The live-migration features have helped maintain our uptime during maintenance work as well.

My company provides system integration services for different clients based on OpenNebula. I'm a systems architect. 

OpenNebula has very good integration with SAP Storage. This is its primary valuable feature. In addition, it's easy to use, has a good UI, and is very scalable. Compared to other open-source hypervisors like OpenStack, installation is very easy as is administering, managing, and configuring the solution. For someone who has never worked with hypervisor virtualization, OpenNebula is a good place to start.

Our company recently completed a project for a customer where we used the solution for cloud management. Our team included four developers, one QA, and a technical manager. 

The customer desired to move from a private to an open or hybrid cloud platform for their lease management system. The customer had dealership and manufacturer showrooms on different systems, controls, and software. We built their systems with different operating systems, CPUs, and memory and constructed a system to manage those resources. 

We use the solution as a super user to provide administration for all users, systems, and upgrades. We can remotely provide users with credentials or install needed items into certain umbrellas. 

The solution prepares and automates workflow because it allows for template and VM creation, assignment of users to certain VMs, and administrative privileges.

The solution provides templates for configurations that can easily be exchanged to VMs. For example, I can create four templates with different configurations or various input parameters and then exchange the proper template to a VM. In contrast, Azure and AWS require multiple steps to achieve the same thing. 

The interface is quite simple and easy to use.

I've deployed OpenNebula a few times, primarily for public cloud hosting providers who want to get into the cloud business.

An excellent example of how OpenNebula improves an organization is with one of my clients who had fifteen to twenty-five customers, and he had to manage all customer needs by himself. If a client called him and said, "I need more disk space on this server," my customer had to log in and increase the disk space for that client. Another client would say, "I want a new IP on my server." My customer would have to log in, go into the server, then adjust it for the client.

When my customer migrated to OpenNebula, he gave each client a login credential and a dashboard so each client could log in to a specific dashboard and manage that instead of asking my customer to manage that dashboard.

OpenNebula freed my customer from doing the maintenance operations of the servers because now that can be done by his clients. For example, his client could go in and create a new digital machine, assign more disk space, increase memory, etc.