1.Ubuntu在更新时出现如下错误:
W: GPG error: http://mirrors.ustc.edu.cn/kubernetes/apt kubernetes-xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6A030B21BA07F4FB
2.出现此错误是缺少公钥,添加即可
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 缺少的公钥(上述截图中红框的公钥)
例:
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6A030B21BA07F4FB