Installation ignores --assume-yes flag

[Kasper Grubbe]

When I run apt-get -y install graphite-carbon this prompt still appears:

Configuring graphite-carbon
The /var/lib/graphite/whisper directory contains the whisper database files
You may want to keep these database files even if you completely remove graphite-carbon, in case you plan to reinstall it later.
Remove database files when purging graphite-carbon?

Even though the apt-get specifies this behavior:

-y, --yes, --assume-yes
           Automatic yes to prompts; assume "yes" as answer to all prompts and run non-interactively. If an undesirable situation, such as changing a held
           package, trying to install a unauthenticated package or removing an essential package occurs then apt-get will abort. Configuration Item:
           APT::Get::Assume-Yes.

[Kasper Grubbe (kawsper)]

A temporary fix is to run it like this:

DEBIAN_FRONTEND=noninteractive apt-get -y install graphite-carbon python-whisper

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Changbin Liu (changbl)]

To avoid popping up the dialog to select yes/no, you can do the following before running "sudo apt-get install graphite-carbon"

# echo "graphite-carbon graphite-carbon/postrm_remove_databases boolean false" | sudo debconf-set-selections