We use yum as the patching mechanism for our CentOS servers. It has worked smoothly for several years without incidents. I ran into a problem related to yum yesterday. Whenever I tried to update my system using the yum update command, I got a lot of error messages on the screen and it crashed. The last message shown is
TypeError: unsubscriptable object
Using Google, I was able to find this post about how to fix it. The proposed fix is to use this command:
yum clean metadata
. If this does not fix your yum problem, use this command:
yum clean all
.
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