我正在尝试在ubuntu 14.04上为非交互式mysql 5.7社区服务器安装创建一个shell调用.根据使用debconf-set-selections的各种来源应该允许这样的安装但我无法启动非交互式dpkg安装程序.

Bellow是我试图用于非交互式安装的env变量

vagrant@default-ubuntu-1404:/sql$echo $DEBIAN_FRONTEND 
noninteractive
vagrant@default-ubuntu-1404:/sql$echo mysql-apt-config mysql-apt-config/enable-repo select mysql-5.7 | sudo debconf-set-selections

以下是系统的所有mysql-apt-config设置

vagrant@default-ubuntu-1404:/sql$sudo debconf-get-selections | grep mysql
    mysql-apt-config    mysql-apt-config/select-tools   select  workbench-6.2 workbench-6.3 connector-python-2.0 connector-python-2.1 router-2.0 mysql-utilities-1.5 mysql-tools
    mysql-apt-config    mysql-apt-config/select-preview select  
    mysql-apt-config    mysql-apt-config/repo-distro    select  ubuntu
    mysql-apt-config    mysql-apt-config/enable-repo    select  mysql-5.7
    mysql-apt-config    mysql-apt-config/repo-url   string  http://repo.mysql.com/apt/
    # Choices: MySQL Server (Currently selected: mysql-5.7), MySQL Tools & Connectors (Currently selected: Enabled), MySQL Preview Packages (Currently selected: Disabled), Ok
    mysql-apt-config    mysql-apt-config/select-product select  
    mysql-apt-config    mysql-apt-config/repo-codename  select  trusty
    mysql-apt-config    mysql-apt-config/unsupported-platform   select  abort
    # Choices: mysql-5.6, mysql-5.7, None
    mysql-apt-config    mysql-apt-config/select-server  select  

而安装本身：

wget http://dev.mysql.com/get/mysql-apt-config_0.7.2-1_all.deb
sudo dpkg -i mysql-apt-config_0.7.2-1_all.deb

以交互模式启动.

有任何想法吗？

export DEBIAN_FRONTEND=noninteractive

debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/repo-codename select trusty'
debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/repo-distro select ubuntu'
debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/repo-url string http://repo.mysql.com/apt/'
debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/select-preview select '
debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/select-product select Ok'
debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/select-server select mysql-5.7'
debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/select-tools select '
debconf-set-selections <<< 'mysql-apt-config mysql-apt-config/unsupported-platform select abort'

wget http://dev.mysql.com/get/mysql-apt-config_0.7.2-1_all.deb
dpkg -i mysql-apt-config_0.7.2-1_all.deb
apt-get update
apt-get install -y mysql-server-5.7