During Twitter storm (thanks to VMware vExpert advocacy program), my attention was caught by the fling’s announcement called “vSphere Compatibility Predictor”. In a nutshell: a check tool to upgrade vsphere to version 6.5 considering SDDC extensions like NSX, vRO,… Simply download, accepting the agreement and execute the installation. Just to note that in some security […]
With 3 years from my last DCV certification exam, I tried with success VCP6 Delta certification exam. Could I be the last from re-certification people? I don’t know but, sure, from version 4 to 6 the exam difficulty is increased. Let’s see in depth. A new certification track The introduction of associate certification is what […]
During my research across VMware ecosystem, something catch my attention in Nakivo. The announcement today, is the upcoming release of version 7, that, in addiction of the protection for VMware and Amazon EC2 workloads, it includes backup and replication in Hyper-V environments. Here the official announcement: https://www.nakivo.com/resources/whats-new-in-v7.html EC2 Protection (available since v.6) If you’re thinking […]
vCenter is primary management tool for vSphere admins. It provides: point of control for all components in vDC management functionalities and services rights, permission and roles management storage and resource requirements management unification view of all resources provided by every ESXi host Components in vCenter Server PSC (Platform Services Controller) Components and feartures: SSO Licensing […]
This is not only a study, this could be a rapid guide to identify logs locations and their purposes. Sources: KB 1021806 https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1021806 ESXi Source: https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.security.doc/GUID-F35D7005-58EB-48AC-99D5-B9942EB2A8EF.html VMkernel Location: /var/log/vmkernel.log Purpose: ESXi and VM activities VMKernel warnings Location: /var/log/vmkwarning.log Purpose: VM activities VMkernel summary Location:/var/log/vmksummary.log Purpose: uptime and statistics about ESXi Host Agent Location: […]
vSphere components use SSL to communicate securely with each other and with ESXi and is also used by vCenter services such as the vSphere Web Client for initial authentication to vCenter Single Sign-On. In vSphere >= 6.0, the VMware Certificate Authority (VMCA) provisions each ESXi host and each vCenter Server service with a certificate that […]
Sources: wikipedia (numa available in many languages) https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-7E0C6311-5B27-408E-8F51-E4F1FC997283.html ESXi supports memory access optimization for Intel and AMD Opteron processors in server architectures that support NUMA (non-uniform memory access). NUMA architecture developed in multiprocessor system where time to access to a single data by a processor depending on the processor position from memory. In NUMA a […]
Workload balancing is another vSphere feature that using vMotion and sVmotion increase the system efficiency and in some cases could be a cost savings solution. Sources: https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-98BD5A8A-260A-494F-BAAE-74781F5C4B87.html https://blogs.vmware.com/vsphere/2016/05/load-balancing-vsphere-clusters-with-drs.html (thx to Matthew Meyer) https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1007485 Resource management Resource type are: CPU Memory Power Storage Network Resource providers are: Host Clusters Datastore cluster Resource consumers are VMs. Goals […]
The added value for a server to be virtualized in a vSphere environment is the agility to move itself across physical environment with near zero downtime. vSphere started talking about vMotion and storage vMotion to give back to customer the agility to minimize planned downtime for maintenance. Sources: Official doc: https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.vcenterhost.doc/GUID-FE2B516E-7366-4978-B75C-64BF0AC676EB.html It is possible to […]
All of us know the direct installation via media, which is the most used by many folks during “poor” cluster installation (up to 6 nodes installation). But in this post I would highlight other installation methods, extracting pieces of infos from official docs: https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.install.doc/GUID-D0A72192-ED00-4A5D-970F-E44B1ED586C7.html Scripted installation It’s possible to perform scripted way to install and […]
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