Marking invalid as it seems this is unrelated to cloud-init. Please re-
open if this surfaces again.
** Changed in: cloud-init
Status: Triaged => Invalid
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https://bugs.launchpad.net/bugs/2007400
Title:
eatmydata enabled by default results in apt packages not correctly
installed
Status in cloud-init:
Invalid
Bug description:
I'm using LXD 5.0 (LTS) on Ubuntu 22.04 to launch containers and virtual
machines. I am using cloud-init in LXD's user.user-data field to install some
apt packages when the container or VM is launched. For example, I have the
following cloud-config section:
package_update: true
packages:
- openssh-server
The server is launched as follows:
lxc launch images:ubuntu/jammy/desktop myhostname --vm
However, when the server is launched, the apt package is listed as
successfully installed, but there are no files associated with it:
util.py[DEBUG]: apt-install [eatmydata apt-get
--option=Dpkg::Options::=--force-confold
--option=Dpkg::options::=--force-unsafe-io --assume-yes --quiet install
openssh-server ... took 25.031 seconds
handlers.py[DEBUG]: finish:
modules-final/config-package-update-upgrade-install: SUCCESS:
config-package-update-upgrade-install ran successfully
Yet "dpkg -L openssh-server" shows:
Package 'openssh-server' does not contain any files (!)
This results in an unusable system. I don't know what "eatmydata" is
or why it is enabled by default, but does indeed appear to be eating
this data and resulting in an unusable server.
It looks like there's a sparsely documented option called apt_get_wrapper
which seems to let you disable "eatmydata":
https://cloudinit.readthedocs.io/en/18.5/topics/examples.html?highlight=eatmydata#additional-apt-configuration
I configured this to disable "eatmydata" and sure enough, I am now
able to successfully create a virtual machine. Is it possible to
better document the use of eatmydata in cloud-init, and moreover maybe
consider disabling it by default so you have to opt-in to get the
performance benefits it provide (while accepting the risk of possible
data corruption)?
Thanks!
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