Has one of your Azure Stack HCI Node Arc Resource in  Azure Disappeared, and perhaps the cluster is no longer syncing to Azure?

jantorep

This post is recreated and was orginally posted February 9, 2024

Last year i had an issue where nodes would suddenly drop out of the Azure pane and no longer show under the cluster or as a Azure Resource. And perhaps it also says not connected recently?

So let’s go trough the scenarios and how to fix them

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Bare Metal Deployed Hyper-V Host won’t start after reboot, repair boot loop

jantorep

So a few days ago i was firmware and driver patching a S2D cluster for a client that is Bare Metal Deployed from VMM. For those not familiar with Bare Metal Deployment, it deployes a VHDX file to the c:\ drive and changes the bcdboot order so that it points to the VHDX file to boot from.

Firmware upgrades is something i have done a million times and never had any issues with booting before. And it happend on the 2nd node i was upgrading. No matter what i tried with recovery options from the repair boot, there was no fixing it.

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Issue Cloud Service IP CIDR is required when setting up resource bridge for Azure Stack HCI

jantorep

So i was setting up a Azure Stack HCI Lab today and came across a error msg when running the set-mocconfig command.

My cluster has static IP addresses on everything and for some reason it then requires the Cloud Service IP CIDR to be set static. And you can’t use a parameter like $cloudservicecidr = “IP Address” You need to specify it in the line.

Error msg i got was

Cloud Service IP CIDR is required when using static IP assignment.

It works if adding -cloudServiceCidr 10.0.0.49 at the end after stable.

#On Mode
Set-MocConfig -workingDir "\\$using:ClusterName\ClusterStorage$\$using:VolumeName\workingDir" -vnet $vnet -imageDir $using:VolumePath\imageStore -skipHostLimitChecks -cloudConfigLocation $using:VolumePath\cloudStore -catalog aks-hci-stable-catalogs-ext -ring stable -cloudServiceCidr 10.0.0.49

Adding a new Address Space to a Azure vNet and peering not updated

jantorep

So last week i had to add a new address space to a vNet as i needed a seperate subnet for Private Endpoints. I added a address space, configured the subnet and setup the private endpoints.

When i started testing i could not reach the private endpoints. I could see the traffic flow in the NSG logs and from other vNets trough the Azure Firewall. And i could not figure it out. I asked a few MVP friends and the answer was that this is a limitation in Azure.

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Azure Firewall Routing to a Public IP Range in your On-Premises environment

jantorep

This week we have been deploying a new environment in Azure for a client. With a secured vWAN Hub with Azure Firewall. The vWAN Hub is connected to a Cisco SD-WAN appliance that connects all of the clients physical location. We configured 2 new Domain Controllers, opened up the traffic between the Azure DC and on-premises DC. We could reach the Azure DC’s but not the other way arround.

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Cluster Node failed to join the cluster

jantorep

Hey everyone, another Failover Cluster issue i came across lately. And i wanted to share this one as i could not find any good resources online for this issue. So here we go.

A client contacted me a few weeks back about a node that would not come online again in the cluster after a reboot. It would not join back to the cluster at all. When looking at the cluster it just did not want to join back to the cluster. The only good error msg’s under failover clustering i could find where these.

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