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.cloud.google.com/apt kubernetes-xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6A030B21BA07F4FB
W: Failed to fetch http://apt.kubernetes.io/dists/kubernetes-xenial/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6A030B21BA07F4FB
W: Some index files failed to download. They have been ignored, or old ones used instead.
Pesan error diatas ditemui ketika saya akan melakukan update system, error system yang saya temui kali diatas ialah di OS Ubuntu 16.04.4 LTS. Solusi dari kasus diatas ialah sangat sederhana sekali.
Nha apakah solusi dari permasalahan di atas, berikut ialah solusi nya :
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6A030B21BA07F4FBBilamana sukses dan key yang dimasukan valid maka hasilnya seperti dibawah ini :
Kemudian lakukan update system, dan hasilnya ialah :
Demikian solusi mengenai error the signature verification , Semoga Bermanfaat.
