Ubuntu unable to locate package

Question

I have installed devstack for openstack on ubuntu system. I am trying to install quantum-lbaas-agent. I get the error Unable to locate package. I tried

Answer 1

The package cannot be found, because it is not in any of the archives listed in your sources.list file.

This page explains what you need to do:

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

I modified the steps a bit for your case to be perfectly clear and as easy as possible:

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

This will work for virtualenv pip wheel errorcode1 problems and also E unable to locate package problems

    sudo apt-get update

    sudo apt-get install python-software-properties

    sudo apt-get install apt-file

    sudo apt-file update

    sudo apt-get install software-properties-common

    sudo apt-get install <your filename>  

Answer 3

My problem

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

Answer 4

You can do :

sudo apt-get purge 

This will clean up the configs which may be stopping you form installing the package