Conventionally, patching the QEMU/KVM hypervisors that support OpenStack, ProxMox, or OpenNebula would involve a reboot or migration of your virtual machine to another running hypervisor.
But delaying patches to coordinate a migration or reboot is leaving your systems vulnerable, and your end-users may be noticing the service disruption involved.
TuxCare’s QEMUCare rebootless live patching solution enables cloud providers, virtual private server (VPS) hosts, or any other organization with QEMU-based virtualization systems to automate their infrastructure patching without needing to orchestrate an inconvenient reboot or disrupt virtual tenants’ systems.