The creation of Rhev data center and the creation of cluster are not too much to write, because the steps are simpler, but here's a few of the graphs to take a few points down.
There is a data center by default, but in the case of multiple data centers, we will create new data center for easy differentiation. As follows:
Storage can be divided into local and shared storage, typically shared storage, with NFS, ISCSI, SAN, GFS, and other types of support;
Compatible version of the default selection of the current version can be, general new version will be backward-compatible;
The quota mode is generally turned off unless there is a configuration requirement.
The cluster can be created through the wizard interface after the data center is initiated, or you can choose to configure it later in the cluster page add new.
The CPU type entry that needs to be noted in the cluster general entry is that the CPU types that are set must be aligned with the physical CPU type. If different, the host will be followed by an error, the specific CPU type can cat/proc/cpuinfo view the Rhev CPU type.
The part of the optimization that needs to be adjusted is primarily memory:
Memory optimizer, because the virtual machine running is the server item, here Select Server, the host within the cluster can be used in quota memory 150%. such as 10G memory, you can configure all of the virtual machine configuration memory of the sum of 15G. In fact, the sample configuration is also to maximize the use of physical host resources-the host of all virtual machines can not always be full memory use;
The KSM feature is the kernel samepage merging (the kernel is the same page merge) simply by merging the same memory, which allows your physical machine to run more virtual machines, but it will certainly have a performance impact. KSM is a memory-saving de-duplication feature, this merges anonymous (private) pages (not pagecache ones). Refer to http://www . linux-kvm.org/page/ksm page;
Resilience Policy The default virtual machine migration, the cluster policy will mention that this is also the default, and the console item uses the spice default value. Fencing devices This does not default when using the RHCs cluster, such as HP ILO, Dell IDRAC, and IBM RSA II need fencing devices. This function is mainly the physical host can not respond through the management port hardware reset.
The data center is still red when the default creation is complete, because the host is not added to the cluster, and the storage storage is not added. Add the host part to view the previous article RH318 summary (iii) RHEV-H installation and tube.
