Some Basic Interview Questions and Answers : Part 1 – VMware. Minds. VMWare Top Interview Questions with Answers.
Explain about your production environment? How many host failure allowed and why? ANS. What happens if 4 hosts have failed and a 5th one also fails. I have still enough free resources to start up the virtual machines on the remaining hosts. Will HA start these virtual machines from the 5th failed host on the remaining hosts? ANS) That depends.
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If you have admission control enabled, if there are any resource constraints some VM. If you have admission control disabled, the VM. Make sure you have enough port groups configured on your v. Switch for your Virtual Machine port group to accommodate. Host Firewalls. On ESX/ESXi hosts, VMware HA needs and automatically opens the following firewall ports. Incoming port: TCP/UDP 8. Outgoing port: TCP/UDP 2.
What are active host / primary host in HA? The first five hosts added to the cluster are designated as primary hosts, andall subsequent hosts are designated as secondary hosts. The primary hosts maintain and replicate all clusterstate and are used to initiate failover actions. If a primary host is removed from the cluster, VMware HApromotes another host to primary status. Any host that joins the cluster must communicate with an existing primary host to complete its configuration(except when you are adding the first host to the cluster).
At least one primary host must be functional for. VMware HA to operate correctly. If all primary hosts are unavailable (not responding), no hosts can besuccessfully configured for VMware HA. So, to have reliable failure detection for HA clusters, the console network should haveredundant network paths.
If the hosts are not in the VMotion network, however, DRS can still makeinitial placement recommendations. Which technology used? What are the priority counts to migrate the VM? How do you troubleshoot? Prerequisites VC, Update manager? Have you ever patched the ESX host?
What are the steps involved in that? Have you ever installed an ESX host? What are the pre and post conversion steps involved in that? What would be the portions listed? What would be the max size of it?
I turned on Maintenance mode in an ESX host, all the VM? What are the possible reasons? How will you turn start / stop a VM through command prompt?
I have upgraded a VM from 4 to 8 GB RAM; it? How do you troubleshoot? Storage team provided the new LUN ID to you? How will you configure the LUN in VC?
What would be the block size (say for 5. GB volume size)? 1. I want to add a new VLAN to the production network? What are the steps involved in that? And how do you enable it? Explain about VCB? What it the minimum priority (*) to consolidate a machine?
How VDR works? 2. What? What are the services involved in that? What are the port numbers? Port used? 2. 6) Can I VMotion between 2 different data centers? Why? 2. 7) Can I deploy a VM by template in different data centers ? I want to increase the system partition size (windows 2.
Guest OS) of a VM? How will you do it without any interruption to the end user? Which port number used while 2 ESX transfer the data in between? Unable to connect to a VC through Vsphere client?
What could be the reason? How do you troubleshoot? Have you ever upgraded the ESX 3. How did you do it? What are the Vsphere 4. VC 4. 0, ESX 4. 0, VM 7.
What is AAM? How do you start or stop through command prompt? ANS) VMware- aam = HA. VMware purchased the HA technology from Legato, who originally coined it as . Etc. 3. 5) Explain about Vsphere Licensing? For more information, see Configuring or restoring networking from the ESX service console using console- setup (1. If you make changes through a network connection such as SSH, network connectivity to the Service Console disconnects because the Service Console.
If the ESX host is managed by Virtual. Center or v. Center Server, you may have to remove and re- add the host to the inventory.
For more information, see ESX not working properly in Virtual. Center after IP address change (1. Note: Making changes to IP and DNS server settings can have a negative impact on the normal operation of ESX/ESXi, particularly in HA clustered environments. For more information, see Identifying issues with and setting up name resolution on ESX/ESXi Server (1.
For more information, see Recreating Service Console networking from the command line (1. Changing the hostname without rebooting. To dynamically change the hostname, run the command.
This change is lost when the system is rebooted. Under certain circumstances, it might be required to force the host to generate new certificates.
Typically new certificates only need to be generated if the hostname has been changed or the certificates have been deleted accidentally. If the files cannot be found, new certificate files are generated. If you are using v. Sphere 4. x you can just disable host monitoring in the HA settings. For more information, see Replacing or Regenerating an SSL Certificate for the Management Interface (1. For more information, see Editing files on an ESX host using vi or nano (1.
If you change the hostname of the ESX host, ensure to review your i. SCSI software initiator configuration. For more information on i. SCSI troubleshooting, see Configuring and troubleshooting basic software i. SCSI setup (1. 00. For Converter Boot CD, map a network drive using thenetwork configuration tool (see Chapter 5, .
Top 1. 5 VMWare Interview Questions . When the ESX host loses its ability to connect with other hosts in a cluster through heart- beat, then ESX host will be considered as a Host Isolation.
Top active directory interview questions and answers job interview tips. Admin interview Question and Answer # 1. 30 important-virtualization-vmware-interview-questions-with-answers 1. 30 Important Virtualization-VMware Interview Questions with.
Mention what is the difference between VMware HA and Vmware FT? VMware FT is enabled per VM basis while VMware is enabled per cluster. In the case of ESX host failure, virtual machines are the failed host and are re- started and powered- on the other active hosts in HA cluster. But FT enabled virtual machines; there is no down time. In the case of host failure, secondary VM will be activated, and it becomes primary and continue to run from the exact point where the primary VM is failed or left off.
Explain the new features available in v. Sphere 5? In the latest version of v. Sphere 5. 5 it includes. ESXi Hypervisor enhancement. Virtual Machine Enhancement. VMware v. Center Server Enhancementv.
Sphere storage Enhancementv. Sphere Networking Enhancements. What are the new features included in ESXi Hypervisor enhancement? In ESXi Hypervisor enhancement includes. Hot- pluggable PCIe SSD Devices: It supports SSDs (Solid State Disks) devices, and with a new enhancement, SSD device can be removed or added while a v. Sphere host is running.
Support for Reliable Memory Technology: v. Sphere ESXi hypervisor can take an advantage of new hardware; vendor enabled Reliable Memory Technology, through which a region of memory is reported from the hardware to v. Sphere ESXi hypervisor.
It is used to enhance the placement of VMKernel and other components like initial thread and hostd. It helps to protect against memory error. Enhancements to CPU C- states: A power process (C- state) is used to provide additional power savings. Mention what is the difference between template and clone in VMware?—————. It enables multiple virtual machines to use the same software installation——————————When virtual machine is powered on, it cannot convert virtual machine to template, but can convert clone to template.