For those of you who haven’t met it yet, Harvester is a modern Hyperconverged infrastructure (HCI) solution. It’s built for bare metal servers using enterprise-grade open source technologies including Kubernetes; Kubevirt, a virtualization Application Programming Interface (API) for Kubernetes; and Longhorn, distributed block storage for Kubernetes. Besides letting you deploy VMs and containers with one set of programs, Harvester enables you to put VM workloads on the edge, close to your Internet of Things (IoT) devices while being integrated into your cloud infrastructure. Also: What is Kubernetes? How orchestration redefines the data center Harvester does this by leveraging SUSE Rancher’s GitOps-powered continuous delivery (CD) capabilities to scale potentially thousands of HCI clusters running a mix of virtual machines and containerized workloads from core to edge. SUSE isn’t the first company to explore the possibilities of working with VMs and containers using Kubernetes. For example, Red Hat’s Migration Toolkit for Virtualization (MTV) for OpenShift 4.7 lets you migrate VMs at scale if you’re using Red Hat OpenShift Virtualization. But, as SUSE points out, most of these approaches require you to use a vendor-specific version of Kubernetes and VM management, while Harvester is more flexible. At the same time, Harvester has its limitations. For example, it’s designed to use local, direct-attached storage instead of complex external storage area networks (SAN)s. Longhorn, however, opens the door for it to use other kinds of storage. Among Harvester, other noteworthy features are:
VM lifecycle management including SSH-Key injection, Cloud-init and, graphic and serial port consoleVM live migration supportSupporting VM backup and restoreDistributed block storageMultiple NICs in the VM connecting to the management network or VLANsVirtual Machine and cloud-init templatesRancher integration with multi-cluster management and the Harvester node driverPXE/iPXE boot supportVirtual IP and bond NIC supportIntegration monitoring
Put it all together and what I see with this pairing is a way to bridge the gap between your legacy VM infrastructure and your cloud-native Kubernetes infrastructure. As Sheng Liang, SUSE’s president of Engineering and Innovation, said, “By investing in these projects, we’re providing customers with the technology they need to bridge the gap between legacy and cloud-native IT.” Related Stories:
SUSE releases its first version of Rancher: Rancher 2.6.Should Red Hat be afraid of SUSE’s Rancher acquisition?Red Hat opens the door for both VMs and containers in its latest OpenShift release.
