[error] The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B53DC80D13EDEF05Reading package lists... Done

쿠버를 세팅 하면서 생긴 이슈이다.

 

sudo apt-get update

후에 생긴 에러다

 

해결법

sudo mkdir -p /etc/apt/keyrings

 

echo "deb [signed-by=/etc/apt/keyrings/kubernetes.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

 

curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes.gpg

 

 

참고

https://github.com/kubernetes/release/issues/2862#issuecomment-1533888814