Managing Microsoft Windows Server infrastructure using Honolulu

Honolulu is a browser based management tool set that helps in the administration of Windows servers, failover clusters and hyper-converged clusters in your environment. Microsoft has released the evalution version few days back. You can download the .msi package from https://aka.ms/HonoluluDownload . The application manages Windows Server 2012, Windows Server 2012 R2 and Windows Server 2016 through the Honolulu gateway that you can install on a Windows Server 2016 or Windows 10. The gateway uses Remote PowerShell and WMI over WinRM to manage the servers. If you are having Windows Server 2012/ 2012 R2 in your environment and planning to manage them using Honolulu then you will need to install Windows Management Framework (WMF) version 5.0 or higher on those servers.

The installation is very much straight forward. For the purpose of testing I installed it on a Windows Server 2016. Below screenshot shows the home screen which displays all the available connections. You can use the Add button to add stand alone servers, failover clusters and hyper-converged clusters. Here I have a Failover Cluster with four nodes.

You can set the credentials required to manage your servers and clusters using the Manage As option. Once you select that option, it will ask you to provide the username and password.

You also have a drop down option on the home page to select installed solutions.

Now lets have a quick look at the failover cluster overview.

You can view various details as shown below.

Disks

Networks

Roles

You can also set the preferred owners and start up priority for your virtual machine by selecting the VM and clicking Settings button.

Preferred Onwers and Startup Priority

Failover and Failback policy

Virtual machines

This shows the total number of virtual machines and its state. The resource usage shows the total cluster resource utilization. I think it would make more sense if Microsoft adds the resource usage information in the cluster overview page. You can click on VIEW ALL EVENTS to view the events page.

Events

To manage any of the cluster member nodes, you can select the respective server and click Manage as shown below.

Nodes

It will redirect to server manager page where you have multiple options to manage your server.

Server manager

You can use the server manager page to add/ remove roles and features, manage services, create/ enable/ disable firewall rules, create vswitches, install windows updates, restart the server etc.

Reference: Microsoft 

Some of the coolest features/ enhancements in Hyper-V 2016

VM compute resiliency: This will help providing resiliency to transient issues like a temporary disconnection of a cluster node due to some network issues or if the cluster service itself on the node crashes etc. The VMs will still continue working "Unmonitored" even if the node falls out of cluster membership into an isolated state. Here the unmonitored state of the VM implies that it is no longer monitored by cluster service. The default resiliency period is 4 minutes. This means the Unmonitored VMs will be allowed to run on that isolated node for 4 minutes and after that VMs will be failed over to a suitable node/ nodes in the cluster. And that particular node which is isolated is moved to a down state. The cluster service itself is now not a necessary dependency for a VM to run. As long as connectivity exists the VM will continue working.

Node quarantine: If a cluster node is isolated certain number of times (default is 3) within an hour it will be moved to quarantine state and the VMs running on it (if any) will be failed over to another suitable node/ nodes in the cluster. 

Event 1 - cluster service stopped on node A - node A isolated (down) - cluster service restarted - node A online
Event 2 - cluster service stopped on node A - node A isolated (down) - cluster service restarted - node A online
Event 3 - cluster service stopped on node A - node A down - node A quarantined

The node will be quarantined for a period of 2 hours by default. But the administrator can manually start the cluster service on that node to join it back to the cluster.

VM storage resiliency: If there is a storage interruption, the VM identifies it and it will pause all the IO's for a certain duration and once the storage is available all IO operations will be resumed. This is very helpful in case of transient storage issues, saving the VM from blue screening or crashing. If the storage path is not back online after a certain period of time, it will pause the VM. Once storage comes back it auto resumes.

VM memory run time resize: You can now increase/ decrease RAM of a running VM.

Hot add/ remove VM network adapters: VM network adapters can also be added or removed on the fly.

Cluster OS rolling upgrades: With this feature you can upgrade your Hyper-V 2012 R2 cluster to Hyper-V 2016 cluster without shutting down the cluster. You can upgrade your existing cluster in 2 ways. Either you can add new 2016 nodes to the 2012 R2 cluster, migrate workload to new 2016 nodes and evict old nodes. Or you can evict one of the existing 2012 R2 node, do a clean installation of 2016, add it back to the cluster and do the same for rest of the nodes. Once all the nodes are 2016, you can update cluster functional level to 2016.