Debian9更新軟件提示NO_PUBKEY

1.debian9更換debian10鏡像源更新提示gpg證書錯誤

W: GPG error: //mirrors.tuna.tsinghua.edu.cn/debian buster-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0E98404D386FA1D9 NO_PUBKEY 6ED0E7B82643E131

2.安裝需要的依賴和軟件

apt-get install software-properties-common dirmngr -y

彈窗回車即可

3.添加gpg證書驗證

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0E98404D386FA1D9 6ED0E7B82643E131