Hacker News new | ask | show | jobs
by eightnoteight 941 days ago
exactly this, debugging is a pretty big part when it comes to operational aspects.

but I feel like similar to kubernetes container injection systems. I suspect in future we would see dynamic injection into the unikernel where you can enable debugging environment instantly.

like the library unikernel exposes a plugin system that you can inject in future, this way the unikernel is lightweight and only gets bloated when you eventually want to debug something.
2 comments
hannesm 941 days ago
What you already can do is attaching gdb -- either live or at a core dump. Please see https://github.com/Solo5/solo5/blob/master/docs/debugging.md for detailed instructions ;)

What you as well can do is record-replay -- well, at least there used to be this option, I'm now lost whether it has never been merged anywhere, or it is stuck in some PR somewhere. This was truly great - since the external interface is so thin, it is easily doable to dump all external events (API calls and returns) onto disk and replay one-by-one, inspecting the state.

link
eightnoteight 941 days ago
actually I think this might be the intention of mirage as well, especially since they put "modularity" in the title
link