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My VCAP5-DCA (VDCA550) exam experience.

My VCAP5-DCA (VDCA550) exam experience.

As I boasted off in one of my previous posts already, I recently (well – two months ago, on September 1st, 2014) passed the VDCA550 exam. In this post I would like to share my experience of this exam and write a few words about the learning path I took. No warranty expressed or implied is given, that following my steps will yield you a positive result on this dreaded test The earliest date you can point to as a start of my VCAP...

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Nutanix Prism Central – Installation

Nutanix Prism Central – Installation

What’s Nutanix Prism Central. It is point of monitoring, management and alerting for Nutanix clusters. From single console you can manage, monitor all Nutanix clusters. Nutanix Prism Central is virtual appliance based on Nutanix custom distribution of CentOS. The same CentOS build, like other Nutanix products, CVM – controller VM, Nutanix KVM – the only KVM version supported on Nutanix platform. NOTE: do not confuse...

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Yet another PowerCLI script for VM snapshot reporting.

Yet another PowerCLI script for VM snapshot reporting.

OK, after reading the title of this post you might have thought something like: “Well, this guy must have been born yesterday” or “What now? Are we really reinventing the wheel here?”. And yeah, you’re probably right in the way that reporting on VMware snapshots in your infrastructure is one of the best documented topics out there and probably subject of the biggest number of PowerCLI scripts on the Web. I...

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Nutanix fixes for ShellShock vulnerability

Nutanix fixes for ShellShock vulnerability

Most of you already heard about ShellShock vulnerabilities, CVE-2014-6271 and CVE-2014-7169. Nutanix fixes for ShellShock vulnerability, both CVE-2014-6271 and CVE-2014-7169 will be addressed in the  NOS releases stated in the table below. current NOS versionUpgrade torelease date 2.x3.5.4.610/3/2014 5PM PDT3.x3.5.4.610/3/2014 5PM PDT4.x4.0.1.210/5/2014 5PM PDT Recommendation: Customers should upgrade to the following releases to address...

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Rolling restart of ESXi management agents using PowerCLI

Rolling restart of ESXi management agents using PowerCLI

Right after my (waaay too short) holidays finished I was faced with the issue described in this KB. Nothing really serious, but an annoyance, that everybody wants to get rid of as soon as possible. It didn’t take very long before I realized that (in my case) the only effective workaround was to perform “a rolling restart of management agents on affected hosts” (it was a whole 16 host cluster in my case). Of course I...

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Connect vCO to Nutanix API – Part 1

Connect vCO to Nutanix API – Part 1

Connect vCO to Nutanix API – Foundation Here you can find more about Nutanix Foundation. However in this post I will explain how to connect vCenter Orchestrator to Nutanix API. Nutanix foundation API accept and return information in JSON format. JSON is very easy to learn, even such a coding lame as myself can easily operate and build JSON code. Requirements: vCenter Orchestrator deployed and configured Nutanix Foundation deployed...

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How to make PowerCLI script act (almost) like a Windows service.

How to make PowerCLI script act (almost) like a Windows service.

In the final stage of my preparation to VCAP5-DCA exam (that I passed on September 1st – yeah I couldn’t help to brag a little about it ) I started to experience issues with SSO in my home lab. Intermittently and for no obvious reasons SSO was refusing to cooperate and I wasn’t able to authenticate against vCenter. All I was left with was the following error message. The fast and dirty workaround was to restart SSO...

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Nested XEN on VMware ESXi

Nested XEN on VMware ESXi

Quick guide how to deploy nested XEN on VMware ESXi You may want to run XEN s(not a XEN server) for several reasons as virtual machine which run on ESXi. Gotchas: Only one vCPU :-/ – otherwise you will get error as show below when boot you CentOS with XEN kernel. There is a bug in VMXNET3 driver module on Linux which has something to do with number of vCPU assigned to VM, which is different then power of 2. I tested several...

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Nutanix network port diagram

Nutanix network port diagram

Nutanix network port diagram I spent some time to produce small Visio with Nutanix ports diagram to visualize interaction between Nutanix software components (CVM, Prism Central), hardware (SuperMicro IPMI – it is remote management console like HP iLO, Dell DRAC) and hypervisor (in this case VMware ESXi). Some of you might ask, where is vCenter ? Well, Nutanix don’t need to “talk” to vCenter in order to run :-), we...

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Deploy nested KVM on VMware vSphere or Workstation

Deploy nested KVM on VMware vSphere or Workstation

How to deploy nested KVM on VMware vSphere or Workstation. You may have several different reasons to deploy nested environment but one of the most common is – for test new technology, test migration process from or out of the platform or simply lack of hardware resources (homelab deployments). My setup is CentOS 7 with KVM run on VMware vSphere 5.5 (one instance) on Nutanix and VMware workstation 10 on Windows workstation (second...

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