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I’ve officially bowed out of adding multiple API keys to Cachet. It feels bad, but it feels better than just continuing to leave an open PR unworked on.

In other green square news, I have yet another CloudStack issue opened. This one wasn’t just my work, three of us at iWeb spend a full working day trying to figure the problem out. It looks like another commenter on that issue had the same problem and worked around it - but for at least a release CloudStack hasn’t been able to migrate virtual machines which use VXLANs.

This is actually only the bottom problem in a stack; we found this while trying to replicate a different bug which may actually lie in the Linux kernel (or our specific Linux networking configuration) - expect updates if we solve that one.

It requires so much intense concentration to chase bugs like this and when you come out the other side the sense of relief and achievement is amazing, but every obscure bug like this leads to some soul searching: after seeing packets arrive on a NIC and then disappear before hitting the right Linux bridge device, we were questioning whether we just misunderstood some basic tcpdump BPF syntax. You know, just a tool I’ve been using for 15 years.