W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repo3.cumulusnetworks.com CumulusLinux-3 InRelease: The following signatures were invalid: KEYEXPIRED 1522652605 KEYEXPIRED 1522652605 KEYEXPIRED 1522652605
I tried to find the key, which is expired:
apt-key list | grep expired
pub 2048R/A88BBC95 2016-04-02 [expired: 2018-04-02]
And tried to update it manually: apt-key adv --keyserver keys.gnupg.net --recv-keys A88BBC95
But the answer was, that key has't changed:
gpg: key A88BBC95: "Cumulus Linux 3.0 Package Repository Automatic Signing Key
Could anyone, please, assist - how to troubleshoot his situation?