Foreseeing problems (linux related)
Sunday Jan 24 12:17:58 2021
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One of the things I am most proud of after using linux for 15 years is
that I can foresee problems before they show up. This week I had to
update our HP proliant server with debian linux oldstable release
squeeze and before running the magic words apt update && apt upgrade I
thought: Well there are two things to keep in mind here. One, one of
the disks in the raid might be broken (which is often the case after
months of 24/7 service) and two, the new kernel might fail to boot.
It turned out I was right. One of the disks broke and the new kernel
failed to boot. Since I could not fix it remotely I had to go to the
data center to manually boot the system and then remotely fix the
broken kernel.
The system was up and running in a few minutes thanks to my expertise
in dealing with broken systems. This post has nothing to do with egos
or self-praise. It is just a reminder that experience is always a
plus. No matter how clever or geek you are. Experience is always
an extra point.
I am really happy that I was able to solve the problem on a Friday
and the server was up and running during the weekend ;-)