[Bug 1982540] [NEW] /usr/share/unattended-upgrades/unattended-upgrade-shutdown always running, uses too much memory

[Steve Langasek]

Public bug reported:

On a default idle Ubuntu kinetic container, the second largest process
by resident memory is '/usr/share/unattended-upgrades/unattended-
upgrade-shutdown --wait-for-signal'.

We want unattended-upgrades to be installed by default in all container
images, but this process is heavyweight and needs to go.

I see two possible solutions:
- construct a systemd unit that DTRT at shutdown without having to leave a process resident (but er the u-u maintainer knows a bit about systemd so this may not be feasible with the desired semantics?)
- instead of running the python script, implement a small shell wrapper that waits for the signal and execs u-u-shutdown, so that we only pay the memory cost of this script during shutdown.

** Affects: unattended-upgrades (Ubuntu)
     Importance: High
         Status: New


** Tags: fr-2570

** Tags added: fr-2570

** Changed in: unattended-upgrades (Ubuntu)
   Importance: Undecided => High

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to unattended-upgrades in Ubuntu.
https://bugs.launchpad.net/bugs/1982540

Title:
  /usr/share/unattended-upgrades/unattended-upgrade-shutdown always
  running, uses too much memory

Status in unattended-upgrades package in Ubuntu:
  New

Bug description:
  On a default idle Ubuntu kinetic container, the second largest process
  by resident memory is '/usr/share/unattended-upgrades/unattended-
  upgrade-shutdown --wait-for-signal'.

  We want unattended-upgrades to be installed by default in all
  container images, but this process is heavyweight and needs to go.

  I see two possible solutions:
  - construct a systemd unit that DTRT at shutdown without having to leave a process resident (but er the u-u maintainer knows a bit about systemd so this may not be feasible with the desired semantics?)
  - instead of running the python script, implement a small shell wrapper that waits for the signal and execs u-u-shutdown, so that we only pay the memory cost of this script during shutdown.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1982540/+subscriptions