Upgrading to HPE OneView 4.1 – Failed!

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 manageable.

The upgrade from 4.0 to 4.1 should not be affected by the same so I had great hopes about a smooth upgrade. ...  continue reading

Limiting disk i/o in vSphere

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 ensure that our VMs will have access to the resources they need.

For storage this can be more difficult. Where we usually have 50-60 VMs on a host we will probably have hundreds on a Storage Array (SAN). Of course the SAN should be spec’ed to handle the IOPS and Throughput you need, but you also need to balance the amount of disk space available and maybe most importantly, the cost. Add to this that storage utilization often will be intermittent and bursty hence even more difficult to plan and control. ...  continue reading

Slides and scripts from VMUG sessions

I had the privilege of delivering 3 sessions at VMUG Norway this week in Oslo, Trondheim and Bergen.

With the extremely nice weather in Norway this week in mind the attendance were great and as always the discussions were valuable.

My session on vSphere Performance monitoring were the short version of the blog series I did about how we built our solution for doing performance monitoring of vSphere with InfluxDB and Grafana, and how we easily can customize with adding metrics and datasources. ...  continue reading

Grafana dashboard

Monitoring FreeNAS with InfluxDB and Grafana

At work I have done some monitoring projects which I’ve done many blog¬†posts¬†about. At home I have a small vSphere environment serving partially as a Lab but it also runs some services we use at home. Of course I do monitoring of this environment as well, and I use both InfluxDB and Grafana as we do at work.

One of my VMs runs Plex Media Server and recently I moved my media library to a separate box running FreeNAS. I’ve used FreeNAS as a part of my lab earlier as an ISCSI target and serving storage for VMs, but it’s now only serving my media files to the Plex VM.

FreeNAS monitoring

FreeNAS builtin monitor
FreeNAS builtin monitor

The FreeNAS has it’s own performance monitoring available through the Web GUI, but of course I have wanted to incorporate it in my own monitoring solution. I’m not very familiar with the FreeBSD OS which FreeNAS runs on, and I wasn’t very keen on installing any agents on it. ...  continue reading