[Bug 1761771] Re: package unattended-upgrades (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1

[Balint Reczey]

Unattended-upgrades' postinst only triggered the problem which is in
monit/redis:

...
Purging configuration files for unattended-upgrades (0.90ubuntu0.9) ...
insserv: warning: script 'redis_6379' missing LSB tags and overrides
insserv: There is a loop between service monit and redis_6379 if stopped
insserv: loop involving service redis_6379 at depth 2
insserv: loop involving service monit at depth 1
insserv: Stopping redis_6379 depends on monit and therefore on system facility `$all' which can not be true!
insserv: exiting now without changing boot order!
update-rc.d: error: insserv rejected the script header
dpkg: error processing package unattended-upgrades (--purge):
...

Please check the mentioned init.d scripts/services.


** Package changed: unattended-upgrades (Ubuntu) => redis (Ubuntu)

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https://bugs.launchpad.net/bugs/1761771

Title:
  package unattended-upgrades (not installed) failed to install/upgrade:
  subprocess installed post-removal script returned error exit status 1

Status in redis package in Ubuntu:
  New

Bug description:
  shabeebk at shabeeb:~$ sudo apt --purge remove unattended-upgrades
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  The following packages will be REMOVED:
    unattended-upgrades*
  0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
  11 not fully installed or removed.
  After this operation, 315 kB disk space will be freed.
  Do you want to continue? [Y/n] Y
  (Reading database ... 255908 files and directories currently installed.)
  Removing unattended-upgrades (0.90ubuntu0.9) ...
  Purging configuration files for unattended-upgrades (0.90ubuntu0.9) ...
  insserv: warning: script 'redis_6379' missing LSB tags and overrides
  insserv: There is a loop between service monit and redis_6379 if stopped
  insserv:  loop involving service redis_6379 at depth 2
  insserv:  loop involving service monit at depth 1
  insserv: Stopping redis_6379 depends on monit and therefore on system facility `$all' which can not be true!
  insserv: exiting now without changing boot order!
  update-rc.d: error: insserv rejected the script header
  dpkg: error processing package unattended-upgrades (--purge):
   subprocess installed post-removal script returned error exit status 1
  Processing triggers for man-db (2.7.5-1) ...
  Errors were encountered while processing:
   unattended-upgrades
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: unattended-upgrades (not installed)
  ProcVersionSignature: Ubuntu 4.4.0-119.143-generic 4.4.114
  Uname: Linux 4.4.0-119-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.15
  Architecture: amd64
  Date: Fri Apr  6 20:14:11 2018
  ErrorMessage: subprocess installed post-removal script returned error exit status 1
  InstallationDate: Installed on 2017-08-22 (227 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.4
   apt  1.2.26
  SourcePackage: unattended-upgrades
  Title: package unattended-upgrades (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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