apt, gitlab error, The following signatures couldn't be verified because the public key is not available

Question

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.gitlab.com/gitlab/gitlab-ee/debian buster InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3F01618A51312F3F 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.gitlab.com/runner/gitlab-runner/debian stretch InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3F01618A51312F3F W: Failed to fetch https://packages.gitlab.com/gitlab/gitlab-ce/debian/dists/buster/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3F01618A51312F3F W: Failed to fetch https://packages.gitlab.com/gitlab/gitlab-ee/debian/dists/buster/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3F01618A51312F3F W: Failed to fetch https://packages.gitlab.com/runner/gitlab-runner/debian/dists/stretch/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3F01618A51312F3F W: Some index files failed to download. They have been ignored, or old ones used instead.

mrmucha · Answer

1. curl https://gitlab-org.gitlab.io/omnibus-gitlab/gitlab_new_gpg.key -o /tmp/new_gitlab_gpg.key 2. apt-key add /tmp/new_gitlab_gpg.key 3. apt update