久しぶりにWSL / Ubuntuでパッケージをアップデートしようとしたら
$ sudo apt update (略) W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://packages.cloud.google.com/apt cloud-sdk InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FEEA9169307EA071 NO_PUBKEY 8B57C5C2836F4BEB W: Failed to fetch http://packages.cloud.google.com/apt/dists/cloud-sdk/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FEEA9169307EA071 NO_PUBKEY 8B57C5C2836F4BEB W: Some index files failed to download. They have been ignored, or old ones used instead.
公開鍵が古いと怒られたので公式ページの公開鍵保存のコマンドを読み直した。
$ curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -
これで再度アップデート実行:
$ sudo apt update Get:1 http://packages.cloud.google.com/apt cloud-sdk InRelease [6739 B] Get:2 http://packages.cloud.google.com/apt cloud-sdk/main amd64 Packages [171 kB] Hit:3 http://security.ubuntu.com/ubuntu focal-security InRelease Hit:4 http://archive.ubuntu.com/ubuntu focal InRelease Hit:5 http://archive.ubuntu.com/ubuntu focal-updates InRelease Hit:6 http://archive.ubuntu.com/ubuntu focal-backports InRelease Fetched 178 kB in 2s (112 kB/s) Reading package lists... Done Building dependency tree Reading state information... Done 1 package can be upgraded. Run 'apt list --upgradable' to see it.
できた。これで心置きなく sudo apt upgrade が実行できる。
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