Get:1 https://download.docker.com/linux/ubuntu focal InRelease [36.2 kB]
Err:1 https://download.docker.com/linux/ubuntu focal InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7EA0A9C3F273FCD8
Ign:2 http://old-releases.ubuntu.com/ubuntu focal-security InRelease
Err:3 http://old-releases.ubuntu.com/ubuntu focal-security Release
404 Not Found [IP: 91.189.91.124 80]
Err:4 http://in.old-releases.ubuntu.com/ubuntu focal-backports InRelease
Could not resolve 'in.old-releases.ubuntu.com'
Reading package lists...
W: GPG error: https://download.docker.com/linux/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7EA0A9C3F273FCD8
E: The repository 'https://download.docker.com/linux/ubuntu focal InRelease' is not signed.
E: The repository 'http://old-releases.ubuntu.com/ubuntu focal-security Release' does not have a Release file.
W: Target Packages (stable/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:60
W: Target Translations (stable/i18n/Translation-en_IN) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:60
W: Target Translations (stable/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:60
W: Target DEP-11 (stable/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:60
W: Target DEP-11 (stable/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:60
W: Target CNF (stable/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:60
W: Target CNF (stable/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:60
W: Target Packages (stable/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:62
W: Target Translations (stable/i18n/Translation-en_IN) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:62
W: Target Translations (stable/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:62
W: Target DEP-11 (stable/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:62
W: Target DEP-11 (stable/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:62
W: Target CNF (stable/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:62
W: Target CNF (stable/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:62
W: Target Packages (stable/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:64
W: Target Translations (stable/i18n/Translation-en_IN) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:64
W: Target Translations (stable/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:64
W: Target DEP-11 (stable/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:64
W: Target DEP-11 (stable/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:64
W: Target CNF (stable/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:64
W: Target CNF (stable/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:64
W: Target Packages (stable/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:66
W: Target Translations (stable/i18n/Translation-en_IN) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:66
W: Target Translations (stable/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:66
W: Target DEP-11 (stable/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:66
W: Target DEP-11 (stable/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:66
W: Target CNF (stable/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:66
W: Target CNF (stable/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list:66
답변1
이상한 저장소가 활성화되어 있습니다. 우분투 20.04를 사용하는 이유는 무엇입니까 old-releases.ubuntu.com? 이 저장소는 지원되지 않는 이전 버전의 Ubuntu에서만 작동합니다. 또한 in.old-releases.ubuntu.com존재하지 않는다는 문구도 있습니다 .
/etc/apt/sources.list20.04를 "default"로 바꾸는 것이 좋습니다 .
deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner
docker 저장소를 다시 추가해야 하지만 이렇게 하면 old-releases.ubuntu.com에 대한 업데이트 문제가 해결됩니다.
답변2
방금 이 명령을 사용했는데 문제가 해결되었습니다.
# rm -rf /var/lib/apt/lists/*
그 다음에
# apt-get update