我无法在ubuntu16.04上安装mesos和marathon。我添加了由mesophere提供的官方存储库。xenial上的mesos可用存储库吗？
跟着我的细节。

root@sandipd-ThinkPad-E450:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.1 LTS
Release:    16.04
Codename:   xenial
root@sandipd-ThinkPad-E450:~#

正在尝试安装，但出现以下错误。

root@sandipd-ThinkPad-E450:~# apt-get install mesosphere
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package mesosphere

我已经从中间层网站添加了以下存储库。

echo "deb http://repos.mesosphere.com/${DISTRO} ${CODENAME} main" | 
sudo tee /etc/apt/sources.list.d/mesosphere.list