Red Hat Enterprise Virtualization Manager delivers a centralized management system to administer and control all aspects of a virtualized infrastructure from host and guest management through to storage management and high availability. Red Hat Enterprise Virtualization (RHEV) manager provides a rich user interface that allows an administrator to manage their virtual infrastructure from a web browser allowing even the most advanced configurations such as network bonding and VLANs to be centrally managed from a graphical console. RHEV manager manages both Red Hat Enterprise Virtualization Hypervisors (RHEV-H) and Red Hat Enterprise Linux 5 hosts with the KVM hypervisor, delivering leading performance and scalability for virtual machines.
Using the RHEV manager, administrators can effortlessly relocate virtual machines to another host within a cluster and thus dynamically balance resources in a cluster. Moreover, with the help of the Image Manager on the RHEV manager, administrators can provision new virtual machines based on templates in no time.
However, this dependence on the RHEV manager may have its disadvantages. For instance, if the RHEV manager is unexpectedly rendered unavailable over the network, or when the event log captures a serious error on the manager but you have no knowledge of it, then your ability to manage the virtualized infrastructure may be crippled for brief or even prolonged time periods! The only way by which such adversities can be avoided is by continuously monitoring the availability and overall health of the RHEV manager and proactively detecting such deviations before end-users are affected.