Ubuntu无法找到包

Question

我在ubuntu系统上为openstack安装了devstack。我正在尝试安装quantum-lbaas-agent。我收到错误Unable to locate package。我尝试更改/etc/apt/sources.list文件中的来源列表。我无法对其进行编辑，因此我将777的权限更改为sources.list。我在更改权限后运行了sudo apt-get update。我仍然无法找到包错误。我也尝试过运行sudo apt-get upgrade。仍然没有进展。

以下是sudo apt-get install quantum-lbaas-agent的输出：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package quantum-lbaas-agent

这是sources.list文件夹中的/etc/apt：

# deb cdrom:[Ubuntu 12.04.2 LTS _Precise Pangolin_ - Release i386 (20130213)]/ precise main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://in.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://in.archive.ubuntu.com/ubuntu/ precise main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://in.archive.ubuntu.com/ubuntu/ precise-updates main restricted
deb-src http://in.archive.ubuntu.com/ubuntu/ precise-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://in.archive.ubuntu.com/ubuntu/ precise universe
deb-src http://in.archive.ubuntu.com/ubuntu/ precise universe
deb http://in.archive.ubuntu.com/ubuntu/ precise-updates universe
deb-src http://in.archive.ubuntu.com/ubuntu/ precise-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://in.archive.ubuntu.com/ubuntu/ precise multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ precise multiverse
deb http://in.archive.ubuntu.com/ubuntu/ precise-updates multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ precise-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://in.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
deb http://security.ubuntu.com/ubuntu precise-security universe
deb-src http://security.ubuntu.com/ubuntu precise-security universe
deb http://security.ubuntu.com/ubuntu precise-security multiverse
deb-src http://security.ubuntu.com/ubuntu precise-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu precise partner
# deb-src http://archive.canonical.com/ubuntu precise partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http:extras.ubuntu.com/ubuntu precise main
deb-src http://extras.ubuntu.com/ubuntu precise main

有人可以帮忙吗。我真的被困在这一点上。我在ubuntu论坛等上查了各种帖子。

提前致谢。

Answer 1

无法找到该软件包，因为它不在sources.list文件中列出的任何存档中。

此页面说明了您需要执行的操作：

http://docs.openstack.org/trunk/openstack-network/admin/content/install_ubuntu.html

我为您的案例修改了一些步骤，使其尽可能简单明了：

sudo su -
echo deb http://ubuntu-cloud.archive.canonical.com/ubuntu precise-updates/grizzly main >>/etc/apt/sources.list
apt-get install ubuntu-cloud-keyring 
apt-get update
apt-get install quantum-lbaas-agent

Answer 2

这适用于virtualenv pip wheel errorcode1问题，而且E无法找到包问题

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Answer 3

你可以这样做：

sudo apt-get purge 

这将清理可能阻止您安装包

的配置

Answer 4

我的问题

kuma-soft@kumasoft-Inspiron-15-3567:~$ sudo apt install virtualenv
[sudo] password for kuma-soft: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package virtualenv
kuma-soft@kumasoft-Inspiron-15-3567:~$ sudo apt install simplescreenrecorder
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package simplescreenrecorder

sudo apt-get update

Y