设置
我有 3 个虚拟机，每个都运行 12.04：
VM0：托管由 debmirror 构建的部分 ubuntu 存储库。VM1 和 VM2 想要使用它来安装软件包。
我已经重命名，/etc/apt/sources.list -> /etc/apt/sources.list.dis所以它不会被拾取（并且我没有看到虚拟机在 apt-get 更新期间击中标准 ubuntu 档案），并且两个虚拟机具有相同的 sources.list 配置（1 个文件sources.list.d/foo.list）
问题
在一台虚拟机上，我可以apache2从我的 ubuntu 镜像顺利安装，但另一台虚拟机上却不行。是否有任何过时的 apt-get 状态需要我摆脱？
foo.list：
deb http://my-mirror.com/repository/ubuntu/ precise main universe multiverse restricted
deb http://my-mirror.com/repository/ubuntu/ precise-security main universe multiverse restricted
deb http://my-mirror.com/repository/ubuntu/ precise-updates main universe multiverse restricted
在尝试在两个虚拟机上安装 apache2 之前，我运行了sudo rm -rf /var/cache/apt：sudo apt-get update
VM1运行正常：
me@vm1-172-16-2-18:~$ sudo apt-get install apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
apache2-mpm-worker apache2-utils apache2.2-bin apache2.2-common libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap
ssl-cert
Suggested packages:
apache2-doc apache2-suexec apache2-suexec-custom openssl-blacklist
The following NEW packages will be installed:
apache2 apache2-mpm-worker apache2-utils apache2.2-bin apache2.2-common libapr1 libaprutil1 libaprutil1-dbd-sqlite3
libaprutil1-ldap ssl-cert
0 upgraded, 10 newly installed, 0 to remove and 48 not upgraded.
Need to get 102 kB/1,857 kB of archives.
After this operation, 5,686 kB of additional disk space will be used.
Do you want to continue [Y/n]?
...
VM2 没有：
me@vm2-172-16-2-17:~$ sudo apt-get install apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package apache2 is a virtual package provided by:
apache2-mpm-itk 2.2.22-1ubuntu1.7 [Not candidate version]
apache2-mpm-worker 2.2.22-1ubuntu1.7 [Not candidate version]
apache2-mpm-prefork 2.2.22-1ubuntu1.7 [Not candidate version]
apache2-mpm-event 2.2.22-1ubuntu1.7 [Not candidate version]
apache2-mpm-itk 2.2.22-1ubuntu1 [Not candidate version]
apache2-mpm-worker 2.2.22-1ubuntu1 [Not candidate version]
apache2-mpm-prefork 2.2.22-1ubuntu1 [Not candidate version]
apache2-mpm-event 2.2.22-1ubuntu1 [Not candidate version]
E: Package 'apache2' has no installation candidate
me@vm2-172-16-2-17:~$
apt-get update没有报告任何错误。
我该如何解决此问题？
我目前已确定的事情：
- 显然，存储库正在运行，因为 1 台 VM 可以从中安装，所以我认为这一定与第二台 VM 上的 apt-get 有关，但我真的说不出是什么。
- 两个虚拟机的网络也相同。
- 我可以很好地卷曲存储库 URL，因此我认为这不是防火墙问题。
apt-get update这也是损坏的虚拟机的输出：
me@vm2-172-16-2-17:~$ sudo apt-get update
Hit http://my-mirror.com stable Release.gpg
Hit http://my-mirror.com stable Release.gpg
Hit http://my-mirror.com precise Release.gpg
Hit http://my-mirror.com precise-security Release.gpg
Hit http://my-mirror.com precise-updates Release.gpg
Hit http://my-mirror.com stable Release
Hit http://my-mirror.com stable Release
Hit http://my-mirror.com precise Release
Hit http://my-mirror.com precise-security Release
Hit http://my-mirror.com precise-updates Release
Hit http://my-mirror.com stable/main amd64 Packages
Hit http://my-mirror.com stable/main i386 Packages
Ign http://my-mirror.com stable/main TranslationIndex
Hit http://my-mirror.com stable/main amd64 Packages
Hit http://my-mirror.com stable/main i386 Packages
Ign http://my-mirror.com stable/main TranslationIndex
Hit http://my-mirror.com precise/main amd64 Packages
Hit http://my-mirror.com precise/universe amd64 Packages
Hit http://my-mirror.com precise/multiverse amd64 Packages
Hit http://my-mirror.com precise/restricted amd64 Packages
Hit http://my-mirror.com precise/main i386 Packages
Hit http://my-mirror.com precise/universe i386 Packages
Hit http://my-mirror.com precise/multiverse i386 Packages
Hit http://my-mirror.com precise/restricted i386 Packages
Ign http://my-mirror.com precise/main TranslationIndex
Ign http://my-mirror.com precise/multiverse TranslationIndex
Ign http://my-mirror.com precise/restricted TranslationIndex
Ign http://my-mirror.com precise/universe TranslationIndex
Ign http://my-mirror.com stable/main Translation-en_US
Ign http://my-mirror.com stable/main Translation-en
Hit http://my-mirror.com precise-security/main amd64 Packages
Hit http://my-mirror.com precise-security/universe amd64 Packages
Hit http://my-mirror.com precise-security/multiverse amd64 Packages
Hit http://my-mirror.com precise-security/restricted amd64 Packages
Hit http://my-mirror.com precise-security/main i386 Packages
Hit http://my-mirror.com precise-security/universe i386 Packages
Hit http://my-mirror.com precise-security/multiverse i386 Packages
Hit http://my-mirror.com precise-security/restricted i386 Packages
Ign http://my-mirror.com precise-security/main TranslationIndex
Ign http://my-mirror.com precise-security/multiverse TranslationIndex
Ign http://my-mirror.com precise-security/restricted TranslationIndex
Ign http://my-mirror.com precise-security/universe TranslationIndex
Hit http://my-mirror.com precise-updates/main amd64 Packages
Hit http://my-mirror.com precise-updates/universe amd64 Packages
Hit http://my-mirror.com precise-updates/multiverse amd64 Packages
Hit http://my-mirror.com precise-updates/restricted amd64 Packages
Hit http://my-mirror.com precise-updates/main i386 Packages
Hit http://my-mirror.com precise-updates/universe i386 Packages
Hit http://my-mirror.com precise-updates/multiverse i386 Packages
Hit http://my-mirror.com precise-updates/restricted i386 Packages
Ign http://my-mirror.com precise-updates/main TranslationIndex
Ign http://my-mirror.com precise-updates/multiverse TranslationIndex
Ign http://my-mirror.com precise-updates/restricted TranslationIndex
Ign http://my-mirror.com precise-updates/universe TranslationIndex
Ign http://my-mirror.com stable/main Translation-en_US
Ign http://my-mirror.com stable/main Translation-en
Ign http://my-mirror.com precise/main Translation-en_US
Ign http://my-mirror.com precise/main Translation-en
Ign http://my-mirror.com precise/multiverse Translation-en_US
Ign http://my-mirror.com precise/multiverse Translation-en
Ign http://my-mirror.com precise/restricted Translation-en_US
Ign http://my-mirror.com precise/restricted Translation-en
Ign http://my-mirror.com precise/universe Translation-en_US
Ign http://my-mirror.com precise/universe Translation-en
Ign http://my-mirror.com precise-security/main Translation-en_US
Ign http://my-mirror.com precise-security/main Translation-en
Ign http://my-mirror.com precise-security/multiverse Translation-en_US
Ign http://my-mirror.com precise-security/multiverse Translation-en
Ign http://my-mirror.com precise-security/restricted Translation-en_US
Ign http://my-mirror.com precise-security/restricted Translation-en
Ign http://my-mirror.com precise-security/universe Translation-en_US
Ign http://my-mirror.com precise-security/universe Translation-en
Ign http://my-mirror.com precise-updates/main Translation-en_US
Ign http://my-mirror.com precise-updates/main Translation-en
Ign http://my-mirror.com precise-updates/multiverse Translation-en_US
Ign http://my-mirror.com precise-updates/multiverse Translation-en
Ign http://my-mirror.com precise-updates/restricted Translation-en_US
Ign http://my-mirror.com precise-updates/restricted Translation-en
Ign http://my-mirror.com precise-updates/universe Translation-en_US
Ign http://my-mirror.com precise-updates/universe Translation-en
Reading package lists... Done
答案1
事实证明，我通过sources.list.d/foo.list从 VM2 复制配置在 VM1 上手动设置了存储库，但我使用 VM2 上的一些 puppet 类进行了设置。我忘记我设置了apt-pinning使用 puppet，与Pin-Priority: -10
。
删除所有内容/etc/apt/preferences.d/并重新运行后apt-get update && apt-get install apache2，VM2 上运行正常。