[Bug 1685399] Re: [2.2] MAAS should delete cached apt lists before running apt update

[Julian Andres Klode]

Nothing to see here from the apt side, so I'm getting rid of the tasks.

** Changed in: apt
       Status: New => Invalid

** No longer affects: apt

** No longer affects: apt (Ubuntu)

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Title:
  [2.2] MAAS should delete cached apt lists before running apt update

Status in cloud-images:
  New
Status in MAAS:
  Won't Fix

Bug description:
  I have a local Ubuntu mirror that sometimes lags slightly behind the
  official mirror.

  Thus, if I commission a MAAS node while the local mirror is lagging
  behind the images synced to MAAS (which are expecting the current
  packages), "apt-get update" does not overwrite the local apt lists,
  prints errors about hash mismatches, and later may fail to download
  packages which are more up to date in the main archive than the local
  mirror.

  There is a way to prevent this issue: the first thing we should always
  do, before performing any actions with 'apt', is:

      rm -rf /var/cache/apt/lists/*
      apt-get update

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