GPG key expired

[johje349]

Trying to install pdagent on Ubuntu 22.04:
W: GPG error: https://packages.pagerduty.com/pdagent deb/ Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AE0396CFF8253540

Running apt-get update on old installations:
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.pagerduty.com/pdagent deb/ Release: The following signatures were invalid: EXPKEYSIG AE0396CFF8253540 Package Maintainer (PagerDuty, Inc.) packages@pagerduty.com

[nilsringersma]

I'm getting the same error whilst updating our existing system, running on ubuntu 22.04.

Err:8 https://packages.pagerduty.com/pdagent deb/ Release.gpg
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 89108A4BF5778EE0
Fetched 1763 B in 1s (2244 B/s)
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.pagerduty.com/pdagent deb/ Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 89108A4BF5778EE0
W: Failed to fetch https://packages.pagerduty.com/pdagent/deb/Release.gpg  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 89108A4BF5778EE0
W: Some index files failed to download. They have been ignored, or old ones used instead.

Importing the new key fixed this for me, run:
wget -O - https://packages.pagerduty.com/GPG-KEY-pagerduty | sudo apt-key add -

[lchopfpt]

We are seeing the same issue with AlmaLinux 9