HA Cluster

HA(High Availability) Cluster It allows to virtual center automatically migrate and restart the VM’s to another ESXi hosts when an host fails. Configuration steps: Host Failures  – 1 [Default]                                  – 4 [Max.] VM Restart Priority – Medium [Default] Isolation Response – Power off [Default] Admission Control: Doesn’t allow to poweron the VM’s if they…

vSphere Distributed Switch

vSphere Distributed Switch A vSphere Distributed Switch acts as a single virtual switch across all associated hosts. This allows virtual machines to maintain consistent network configuration as they migrate across hosts. Like a virtual switch, a distributed virtual switch is a network hub for virtual machines. A vSphere Distributed Switch can route traffic internally between…

DRS Cluster

DRS (Distributed Resource Scheduler) It is a load balance technique and it will balance the load across the ESXi hosts. Configuration Steps: i. Automation level Manual Partial Automatic Fully Automatic (Recommended) ii. Migration Threshold *======*=====*=====*=====* Conservative                         Aggressive (Slow Migration)                    (Fast Migration) Recommended is three or more stars. iii. VM Swap File location[vmname.vswp] Same as VM…

vMotion

vMotion VMware VMotion enables the live migration of running virtual machines from one physical server to another with zero downtime, continuous service availability, and complete transaction integrity. It is transparent to users. Port : TCP port 8000. It is also known as Hot Migration/Live migration. Host Maintainence e.g.: While upgrading ESX hardware /ESX updates 2.…

Alarms

Alarms — To Monitor the ESXi hosts and VM’s. Types of Alarms: Basic Alerts Advanced Alerts Configuring Alarms: Server up/Down Services up/down Performance issues – CPU over 75%, 90%. – Memory over 75%, 90%. – Disk over 75%, 90%. – Network latency issues Minimum requirements to create an Alarm: Systems should be online Need to…

ESXi Logfiles Information

Log File Name Details /var/log/vmkernel Vmkernel Records activities related to the virtual machines and ESX host /var/log/vmkwarning Vmkernel Warnings A copy of everything marked as a warning or higher severity from vmkernel log. Easier to look through than vmkernel log /var/log/vmksummary Vmkernel Summary Used for avaialability and uptime statistics. Human-readable summary in vmksummary.txt /var/log/vmware/hostd.log Host…

Disk Management

Disk Management  Managing a Hard disk is known as Disk Management. In a new HDD, we can’t store the data Directly. Raw HDD is divided into some portions to store the data. The hard disk is of two types. Basic Disk Dynamic Disk Basic Disk : If the HDD in Basic disks, the divided portion…