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[Cicatrice <1823313@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Hello,

The latest release of Apache 2 package for Xenial has stopped Apache service but did not restart it after update.
This affected several of our servers during unattended update.

$ apt-cache policy apache2
apache2:
  Installed: 2.4.18-2ubuntu3.10
  Candidate: 2.4.18-2ubuntu3.10
  Version table:
 *** 2.4.18-2ubuntu3.10 500
        500 http://eu-west-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        100 /var/lib/dpkg/status
     2.4.18-2ubuntu3 500
        500 http://eu-west-1.ec2.archive.ubuntu.com/ubuntu xenial/main amd64 Packages


$ lsb_release -rd
Description:    Ubuntu 16.04.5 LTS
Release:        16.04


== /var/log/apache2/error.log ==
[Fri Apr 05 06:25:04.417533 2019] [mpm_event:notice] [pid 3154:tid 140296233985920] AH00489: Apache/2.4.18 (Ubuntu) configured -- resuming normal operations
[Fri Apr 05 06:25:04.417543 2019] [core:notice] [pid 3154:tid 140296233985920] AH00094: Command line: '/usr/sbin/apache2'
[Fri Apr 05 06:33:34.765284 2019] [mpm_event:notice] [pid 3154:tid 140296233985920] AH00491: caught SIGTERM, shutting down
[Fri Apr 05 10:09:54.670424 2019] [mpm_event:notice] [pid 22945:tid 140627168151424] AH00489: Apache/2.4.18 (Ubuntu) configured -- resuming normal operations
[Fri Apr 05 10:09:54.670498 2019] [core:notice] [pid 22945:tid 140627168151424] AH00094: Command line: '/usr/sbin/apache2'


== /var/log/apache2/dpkg.log ==
2019-04-05 06:33:34 upgrade apache2:amd64 2.4.18-2ubuntu3.9 2.4.18-2ubuntu3.10
2019-04-05 06:33:34 status half-configured apache2:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:35 status unpacked apache2:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:35 status half-installed apache2:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:35 status triggers-pending man-db:amd64 2.7.5-1
2019-04-05 06:33:35 status triggers-pending ufw:all 0.35-0ubuntu2
2019-04-05 06:33:35 status triggers-pending systemd:amd64 229-4ubuntu21.16
2019-04-05 06:33:35 status triggers-pending ureadahead:amd64 0.100.0-19
2019-04-05 06:33:35 status half-installed apache2:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:35 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:35 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:35 upgrade apache2-bin:amd64 2.4.18-2ubuntu3.9 2.4.18-2ubuntu3.10
2019-04-05 06:33:35 status half-configured apache2-bin:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:35 status unpacked apache2-bin:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:35 status half-installed apache2-bin:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status half-installed apache2-bin:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status unpacked apache2-bin:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status unpacked apache2-bin:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 upgrade apache2-utils:amd64 2.4.18-2ubuntu3.9 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status half-configured apache2-utils:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status unpacked apache2-utils:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status half-installed apache2-utils:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status half-installed apache2-utils:amd64 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status unpacked apache2-utils:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status unpacked apache2-utils:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 upgrade apache2-data:all 2.4.18-2ubuntu3.9 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status half-configured apache2-data:all 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status unpacked apache2-data:all 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status half-installed apache2-data:all 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status half-installed apache2-data:all 2.4.18-2ubuntu3.9
2019-04-05 06:33:36 status unpacked apache2-data:all 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status unpacked apache2-data:all 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 trigproc man-db:amd64 2.7.5-1 <none>
2019-04-05 06:33:36 status half-configured man-db:amd64 2.7.5-1
2019-04-05 06:33:36 status installed man-db:amd64 2.7.5-1
2019-04-05 06:33:36 trigproc ufw:all 0.35-0ubuntu2 <none>
2019-04-05 06:33:36 status half-configured ufw:all 0.35-0ubuntu2
2019-04-05 06:33:36 status installed ufw:all 0.35-0ubuntu2
2019-04-05 06:33:36 trigproc systemd:amd64 229-4ubuntu21.16 <none>
2019-04-05 06:33:36 status half-configured systemd:amd64 229-4ubuntu21.16
2019-04-05 06:33:36 status installed systemd:amd64 229-4ubuntu21.16
2019-04-05 06:33:36 trigproc ureadahead:amd64 0.100.0-19 <none>
2019-04-05 06:33:36 status half-configured ureadahead:amd64 0.100.0-19
2019-04-05 06:33:36 status installed ureadahead:amd64 0.100.0-19
2019-04-05 06:33:36 startup packages configure
2019-04-05 06:33:36 configure apache2-bin:amd64 2.4.18-2ubuntu3.10 <none>
2019-04-05 06:33:36 status unpacked apache2-bin:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status half-configured apache2-bin:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status installed apache2-bin:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 configure apache2-utils:amd64 2.4.18-2ubuntu3.10 <none>
2019-04-05 06:33:36 status unpacked apache2-utils:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status half-configured apache2-utils:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status installed apache2-utils:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 configure apache2-data:all 2.4.18-2ubuntu3.10 <none>
2019-04-05 06:33:36 status unpacked apache2-data:all 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status half-configured apache2-data:all 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status installed apache2-data:all 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 configure apache2:amd64 2.4.18-2ubuntu3.10 <none>
2019-04-05 06:33:36 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:36 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
[... more than 100 times the same lines ...]
2019-04-05 06:33:37 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:37 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:37 status unpacked apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:37 status half-configured apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:37 status installed apache2:amd64 2.4.18-2ubuntu3.10
2019-04-05 06:33:37 startup packages configure

** Affects: apache2 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1823313

Title:
  Apache update to 2.4.18-2ubuntu3.10 stopped service but did not start
  it back

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