Khi mình run apt update thì bị lỗi
Err:6 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 B53DC80D13EDEF05 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.cloud.google.com/apt kubernetes-xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B53DC80D13EDEF05 W: Failed to fetch https://apt.kubernetes.io/dists/kubernetes-xenial/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B53DC80D13EDEF05 W: Some index files failed to download. They have been ignored, or old ones used instead
Cách fix:
https://github.com/kubernetes/release/issues/1982
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | gpg --dearmor | sudo dd status=none of=/usr/share/keyrings/kubernetes-archive-keyring.gpg echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list sudo apt update
