The last months we have had several issues with ESXi hosts going in a "Not responding" status. The VMs are still active and online in this scenario, but the ESXi cannot be managed. This also affets backup as it won't be able to reach the VMs through the APIs. Previously we have normally just restarted the …

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For a long time, actually since we migrated to the VCSA in 6.5 last year, I've wanted to utilize the REST API in the appliance to have some monitoring of them. For several reasons I've had to put that on hold, one of them being that there seems to be something wrong with the back-end authentication calls. I get …

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This month I was accepted as a vExpert for the first time! In total VMware announced 233 new vExperts this summer for their second half announcement in the program. The vExpert program is not a technical certification. VMware states: The judges selected people who were particularly** engaged with their community and …

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When trying to upgrade our lab vcenter from 6.5 to 6.7 this week we encountered a strange error. Our lab environement is running vSphere 6.5 on VCSA and we are running with an external PSC. So when starting the upgrade of the PSC I got an error early in the process, while connecting to the source VCSA. Error when …

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After the release of the new and shiny version 4.1 of HPE OneView we have tried to upgrade one of our (smaller) OneView instances. The update process is usually quite straight forward and it gets better in every release. The upgrade to 4.0 from 3.x had some issues with certificate handling post-upgrade, but it was …

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Following up on my last post on Limiting disk i/o in vSphere we will now see how to automate this. First off we need some way to identify what limit a specific disk should have. You can do this in multiple ways, you could use an external source, you can use Tags or as we've done, Storage Policies. All our VMs and VMDKs …

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Recently HPE released version 4.1 of their management platform, OneView. We use OneView extensively in our environment and are always looking out for new functionality and features in the product. Version 4.1 comes with some new promising features. Secure remote troubleshooting with Remote Technician Reduced downtime …

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This will be a post following on the previous one on how to control disk i/o in vSphere That post showed how you set IOPS limits either through the UI or with PowerCLI. Even though you set the limit on individual disks you need to work through the VM. And when you retrieve the disk limits for a VM you'll get back …

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As a Service provider we need to have some way of limiting individual VMs from utilizing too much of our shared resources. When it comes to CPU and Memory this is rarely an issue as we try to not over-committing these resources, at least not the Memory. For CPU we closely monitor counters like CPU Ready and Latency to …

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This blog post will be building on a previous post where I built a small PXE server environment for ESXi installation. In this post we will enhance the PXE install with customized kickstart files specific for the hardware we want to install. There's two new components to discuss here. The kickstart file (ks.cfg) it …

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