Following on from my previous blog post where I mentioned that we’ve discovered a bug in the Hyperic 5.8.4 client (on both Windows and Linux), I think it’s only fair that I share our findings. It’s a bug that we discovered whilst deploying a very large vRealize Suite (two maximum sized global clusters of vROPS, vRLI, Hyperic and vRA/vRO).

Whilst carrying out some testing in my lab surrounding the impact of replacing SSL certificates in Hyperic, I noticed that if for whatever reason authentication between the Hyperic agent and Hyperic server fails, the Hyperic agent increases CPU utilisation of the client machine it’s running on to between 85% and 100%. At first I thought that it’s an anomaly, but I was then able to reproduce the symptoms a further 3 times in proving to VMware GSS that the issue really does exist. A long story short

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