In this post I will present a little story of what happened to me today. As I was working to upgrade the kernel on one server (remote of course), something very funny (at least if I look at it now) happened. When upgrading a kernel on a remote server there is always a chance (even if you are very experienced and done this several times, still there is a small chance) that something will not work as expected and when rebooting the system to no have it back online. Even though I have a good experience on doing this and I can’t remember since I have ‘lost’ a system when upgrading its kernel, I am always very careful when doing this.

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