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Ubuntu 22.04 jammy 的镜像使用apt update失败
1. 问题现象
# 下载镜像 ~]# docker pull ubuntu:22.04 22.04: Pulling from library/ubuntu 79d0ea7dc1a8: Pull complete Digest: sha256:dfd64a3b4296d8c9b62aa3309984f8620b98d87e47492599ee20739e8eb54fbf Status: Downloaded newer image for ubuntu:22.04 docker.io/library/ubuntu:22.04 # 进入容器 docker run -it ubuntu:22.04 bash # 更新包 root@e0ab4ec26d51:/# apt update Get:1 http://ports.ubuntu.com/ubuntu-ports jammy InRelease [270 kB] Get:2 http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease [119 kB] Err:1 http://ports.ubuntu.com/ubuntu-ports jammy InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Get:3 http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease [108 kB] Err:2 http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Get:4 http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease [110 kB] Err:3 http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Err:4 http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Reading package lists... Done W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://ports.ubuntu.com/ubuntu-ports jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://ports.ubuntu.com/ubuntu-ports jammy InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy-backports/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy-backports/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://ports.ubuntu.com/ubuntu-ports/dists/jammy-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. 2. 尝试方法
# 1.添加key文件 root@e0ab4ec26d51:/# apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 871920D1991BC93C E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation # 失败，缺少命令 # 2.尝试使用gpg添加key文件 # gpg --keyserver keyserver.ubuntu.com --recv 3B4FE6ACC0B21F32 # gpg --export --armor 3B4FE6ACC0B21F32 |apt-key add - root@e0ab4ec26d51:/# gpg --keyserver keyserver.ubuntu.com --recv-keys 871920D1991BC93C bash: gpg: command not found root@e0ab4ec26d51:/# gpg --keyserver keyserver.ubuntu.com --recv 467B942D3A79BD29^C root@e0ab4ec26d51:/# apt install gpg Reading package lists... Done Building dependency tree... Done Reading state information... Done E: Unable to locate package gpg # 失败，缺少命令 # 尝试更换apt镜像源 root@e0ab4ec26d51:/# echo "deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse " > /etc/apt/sources.list root@e0ab4ec26d51:/# apt update Get:1 http://mirrors.aliyun.com/ubuntu jammy InRelease [270 kB] Get:2 http://mirrors.aliyun.com/ubuntu jammy-security InRelease [110 kB] Get:3 http://mirrors.aliyun.com/ubuntu jammy-updates InRelease [119 kB] Err:1 http://mirrors.aliyun.com/ubuntu jammy InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Get:4 http://mirrors.aliyun.com/ubuntu jammy-backports InRelease [108 kB] Err:2 http://mirrors.aliyun.com/ubuntu jammy-security InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Err:3 http://mirrors.aliyun.com/ubuntu jammy-updates InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Err:4 http://mirrors.aliyun.com/ubuntu jammy-backports InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C Reading package lists... Done W: http://mirrors.aliyun.com/ubuntu/dists/jammy/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://mirrors.aliyun.com/ubuntu/dists/jammy/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://mirrors.aliyun.com/ubuntu jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://mirrors.aliyun.com/ubuntu jammy InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: http://mirrors.aliyun.com/ubuntu/dists/jammy-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://mirrors.aliyun.com/ubuntu/dists/jammy-security/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://mirrors.aliyun.com/ubuntu jammy-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://mirrors.aliyun.com/ubuntu jammy-security InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: http://mirrors.aliyun.com/ubuntu/dists/jammy-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://mirrors.aliyun.com/ubuntu/dists/jammy-updates/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://mirrors.aliyun.com/ubuntu jammy-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://mirrors.aliyun.com/ubuntu jammy-updates InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: http://mirrors.aliyun.com/ubuntu/dists/jammy-backports/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: http://mirrors.aliyun.com/ubuntu/dists/jammy-backports/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg are ignored as the file is not readable by user '_apt' executing apt-key. W: GPG error: http://mirrors.aliyun.com/ubuntu jammy-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C E: The repository 'http://mirrors.aliyun.com/ubuntu jammy-backports InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. # 失败，还是不行 3. 解决办法
# 解决方法： # 从报错来看是镜像仓库没有认证，不是安全的，可以通过 --allow-insecure-repositories 参数解决 # 以下为一般镜像仓库出问题的解决办法 1. 检查源是否正确，检查源的地址是否正确，检查源的类型是否正确； 2. 尝试更换源，更换源的方法可以参考Ubuntu官方文档； 3. 尝试更换源的类型，比如从http更换为https； 4. 尝试更换源的地址，比如从国内源更换为国外源； 5. 尝试更换源的更新方式，比如从apt-get更换为aptitude； 6. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 7. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 8. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 9. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 10. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 11. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 12. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 13. 尝试更换源的更新模式，比如从自动更新模式更换为手动更新模式； 14. 尝试使用apt-get clean命令清理缓存； 15. 尝试使用apt-get update --allow-insecure-repositories命令允许更新不安全的源； 16. 尝试使用apt-get update --allow-unauthenticated命令允许更新不受信任的源； 17. 尝试使用apt-get update --allow-unauthenticated --allow-insecure-repositories命令允许更新不受信任和不安全的源； 18. 尝试使用apt-get update --allow-unauthenticated --allow-insecure-repositories --allow-releaseinfo-change命令允许更新不受信任、不安全和发行信息变更的源； 19. 尝试使用apt-get update --allow-unauthenticated --allow-insecure-repositories --allow-releaseinfo-change --allow-downgrades命令允许更新不受信任、不安全、发行信息变更和降级的源； 20. 尝试使用apt-get update --allow-unauthenticated --allow-insecure-repositories --allow-releaseinfo-change --allow-downgrades --allow-change-held-packages命令允许更新不受信任、不安全、发行信息变更、降级和更改已安装软件包的源。 