Why is this happening? I've updated my machine last week.
W: GPG error: http://repo.mysql.com trusty InRelease: The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823
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Kaveh Shahbazian
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3I located the post: "How to solve an expired key (KEYEXPIRED) with apt" https://linux-audit.com/how-to-solve-an-expired-key-keyexpired-with-apt/ – Steve R. Feb 18 '17 at 23:03
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Thanks! But I've already purged MySQL and after some googling & struggling, purged all it's repos & GPG from apt. – Kaveh Shahbazian Feb 18 '17 at 23:54
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MySQL was on machine for more than one year. And suddenly at that time it got broken (not just me). But since I no longer use, I just purged it. – Kaveh Shahbazian Mar 16 '17 at 16:55
1 Answers
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This solved my problem
sudo apt-key adv --keyserver pgp.mit.edu --recv-keys A4A9406876FCBD3C456770C88C718D3B5072E1F5
Source : click here
Saketh Katari
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7I had to use a different keyserver. sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 5072E1F5 – rep Mar 06 '19 at 21:57
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4Another automatic way is to refresh keys that are already present:
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --refresh-keys– Franc Drobnič Oct 10 '19 at 11:00