我正在升级 Ubuntu 18.04 系统。命令sudo do-release-upgrade
失败并显示以下错误。这个系统是k8s master,但是我做了sudo apt purge kubeadm kubectl kubelet
。为什么它还在寻求升级k8s?
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B53DC80D13EDEF05
Fetched 0 B in 0s (0 B/s)
Hit http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit http://security.ubuntu.com/ubuntu focal-security InRelease
Get:1 https://packages.cloud.google.com/apt kubernetes-xenial InRelease [8,993 B]
Hit https://apt.syncthing.net syncthing InRelease
Err 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
Fetched 0 B in 0s (0 B/s)
Error during update
A problem occurred during the update. This is usually some sort of
network problem, please check your network connection and retry.
Restoring original system state
Aborting